Toyota 2003 Prius Manual Download Page 18

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The titles given inside the components are the names of the terminals (terminal codes) and are not treated as being
abbreviations.

2003 PRIUS (EWD493U)

ABBREVIATIONS D

ABBREVIATIONS

The following abbreviations are used in this manual.

ABS

Anti–Lock Brake System

A/C

Air Conditioning

COMB.

Combination

Direct Current

ECU

Electronic Control Unit

EMPS

Electric Motor Power Steering

ESA

Electronic Spark Advance

EVAP

Evaporative Emission

Hybrid Vehicle

J/B

Junction Block

Left–Hand

PTC

Positive Temperature Coefficient

R/B

Relay Block

Right–Hand

SFI

Sequential Multiport Fuel Injection

SRS

Supplemental Restraint System

Switch

TEMP.

Temperature

VSV

Vacuum Switching Valve

With

w/o

Without

Summary of Contents for 2003 Prius

Page 1: ...昆明阳光汽车维修资料工作室长期提供各种汽车维修资料网址 http www kmygqc com 本站所有资料匀由网上收集整理版权由原创单位所有只用于技术交流使用请勿用于任何商业用途昆明阳光汽车维修资料工作室 2006 9 ...

Page 2: ...explosion FOREWORD This wiring diagram manual has been prepared to provide information on the electrical system of the 2003 PRIUS Applicable models NHW11 Series For service specifications and repair procedures of the above models other than those listed in this manual refer to the following manuals Manual Name Pub No 2003 PRIUS Repair Manual Volume 1 Volume 2 2003 TOYOTA New Car Features RM957U1 R...

Page 3: ...s closely related to the system circuit INDEX Index of the system circuits H SYSTEM CIRCUITS Electrical circuits of each system are shown from the power supply through ground points Wiring connections and their positions are shown and classified by code according to the connection method Refer to the section How to use this manual The System Outline and Service Hints useful for troubleshooting are...

Page 4: ...it see Power Source section and the ground points see Ground Point section See the System Outline to understand the circuit operation When the circuit operation is understood begin troubleshooting of the problem circuit to isolate the cause Use Relay Location and Electrical Wiring Routing sections to find each part junction block and wiring harness connectors wiring harness and wiring harness conn...

Page 5: ...W G S D S D C 7 SHIELDED BV1 1 I 5 L L STOP LIGHT 15 7 TO ABS ECU BO 50 15A STOP IB IB REAR LIGHTS WARNING LIGHT COMB METER 3C 3C IE1 14 STOP LIGHT SW STOP LIGHT RH REAR COMB LIGHT RH STOP LIGHT RH REAR COMB LIGHT LH HIGH MOUNTED STOP LIGHT A B I D F H E J M N K L G C LIGHT FAILURE SENSOR 2003 PRIUS EWD493U 4 B HOW TO USE THIS MANUAL The system shown here is an EXAMPLE ONLY It is different to the ...

Page 6: ...r code is shown beside it Junction Blocks are shaded to clearly separate them from other parts 3C indicates that it is inside Junction Block No 3 Example H When 2 parts both use one connector in common the parts connector name used in the wire routing section is shown in square brackets I Indicates the wiring color Wire colors are indicated by an alphabetical code B Black W White BR Brown L Blue V...

Page 7: ...SW is turned off S6 STOP LIGHT SW 2 1 Closed with the brake pedal depressed L4 LIGHT FAILURE SENSOR 1 2 7 GROUND Approx 12 volts with the stop light SW on 4 8 GROUND Approx 12 volts with the ignition SW at ON position 11 GROUND Always continuity PARTS LOCATION Code See Page Code See Page Code See Page C7 34 L4 36 R7 37 H17 36 R6 37 S6 35 RELAY BLOCKS Code See Page Relay Blocks Relay Block Location...

Page 8: ...howing the position on the vehicle of J B and Wire Harness in the system circuit Example Connector 3C connects the Instrument Panel Wire and J B No 3 It is described on page 22 of this manual and is installed on the instrument panel left side T Indicates the reference page describing the wiring harness and wiring harness connector the female wiring harness is shown first followed by the male wirin...

Page 9: ...ATION METER COMBINATION METER FUEL SENDER CIGARETTE LIGHTER O D MAIN SW CLOCK 5 5 5 5 4 4 4 4 4 BA1 5 IB1 8 EA2 10 3E 5 3E 6 3G 13 3F 3 3D 1 3B 7 ID1 15 IC3 3 IA1 2 E 3 A A A W B W B W B W B W B W B W B W B W B W B W B W B W B W B W B W B W B W B W B W B W B W B W B W B W B W B W B W B W B BR W B BR BR W B W B W B W B W B W B W B W B W B W B W B W B W B W B W B W B BR W B BR BR BR W B W B W B W B ...

Page 10: ...LOCK CB 2 1 1 2 4 8 2 3 3 4 G W R P L B Y B Y W R AM2 IG2 ACC IG1 AM1 W W W R W W W B 2 1 1 1 1 1 2 2 2 2 3 4 3 4 1 2 1 2 2 1 1 1 1 IGNITION SW I 8 Battery 30A AM2 2 Starter S 2 20A RADIO NO 1 10A HORN 15A EFI 7 5A DOME Short Pin 10A HAZARD The chart below shows the route by which current flows from the battery to each electrical source Fusible Link Circuit Breaker Fuse etc and other parts Engine ...

Page 11: ...rminal Junction Connector Short Terminal Same Color Junction connector in this manual include a short terminal which is connected to a number of wire harnesses Always perform inspection with the short terminal installed When installing the wire harnesses the harnesses can be connected to any position within the short terminal grouping Accordingly in other vehicles the same position in the short te...

Page 12: ...Actuator 90980 11070 90980 11237 90980 10943 90980 11413 90980 11151 D 4 D 5 D 6 D 7 D 8 D 9 D10 D11 Diode Door Courtesy Light Diode Key Off Operation Diode Luggage Compartment Light Door Lock Control Relay Door Courtesy Light LH Door Courtesy Light RH Door Courtesy SW LH Door Courtesy SW RH 90980 11608 90980 10962 90980 11608 90980 10848 90980 11148 90980 11097 A 8 ABS Speed Sensor Front LH 90980...

Page 13: ... to the connector or component terminal This check can be done with a test light instead of a voltmeter CONTINUITY AND RESISTANCE CHECK a Disconnect the battery terminal or wire so there is no voltage between the check points b Contact the two leads of an ohmmeter to each of the check points If the circuit has diodes reverse the two leads and check again When contacting the negative lead to the di...

Page 14: ...ht The short lies between the connector where the test light stays lit and the connector where the light goes out e Find the exact location of the short by lightly shaking the problem wire along the body CAUTION a Do not open the cover or the case of the ECU unless absolutely necessary If the IC terminals are touched the IC may be destroyed by static electricity b When replacing the internal mecha...

Page 15: ...he left 2 DISCONNECT CONNECTOR 3 DISENGAGE THE SECONDARY LOCKING DEVICE OR TERMINAL RETAINER a Locking device must be disengaged before the terminal locking clip can be released and the terminal removed from the connector b Use a special tool or the terminal pick to unlock the secondary locking device or terminal retainer NOTICE Do not remove the terminal retainer from connector body A For Non Wat...

Page 16: ...Retainer Connector Body Black or White Gray Black or White Dark Gray Gray or White Black Case 1 Type where terminal retainer is pulled up to the temporary lock position Pull Type Insert the special tool into the terminal retainer access hole Mark and pull the terminal retainer up to the temporary lock position HINT The needle insertion position varies according to the connector s shape Number of t...

Page 17: ...he locking lug from terminal and pull the terminal out from rear 4 INSTALL TERMINAL TO CONNECTOR a Insert the terminal HINT 1 Make sure the terminal is positioned correctly 2 Insert the terminal until the locking lug locks firmly 3 Insert the terminal with terminal retainer in the temporary lock position b Push the secondary locking device or terminal retainer in to the full lock position 5 CONNEC...

Page 18: ...rake System A C Air Conditioning COMB Combination DC Direct Current ECU Electronic Control Unit EMPS Electric Motor Power Steering ESA Electronic Spark Advance EVAP Evaporative Emission HV Hybrid Vehicle J B Junction Block LH Left Hand PTC Positive Temperature Coefficient R B Relay Block RH Right Hand SFI Sequential Multiport Fuel Injection SRS Supplemental Restraint System SW Switch TEMP Temperat...

Page 19: ... blocks reverse flow only up to a specific voltage Above that potential it passes the excess voltage This acts as a simple voltage regulator LIGHT Current flow through a filament causes the filament to heat up and emit light PHOTODIODE The photodiode is a semiconductor which controls the current flow according to the amount of light LED LIGHT EMITTING DIODE Upon current flow these diodes emit ligh...

Page 20: ...positions which allows various circuits particularly the primary ignition circuit to become operational RESISTOR VARIABLE or RHEOSTAT A controllable resistor with a variable rate of resistance Also called a potentiometer or rheostat SENSOR Thermistor A resistor which varies its resistance with temperature SWITCH WIPER PARK Automatically returns wipers to the stop position when the wiper switch is ...

Page 21: ...2003 PRIUS EWD493U 20 F RELAY LOCATIONS Engine Compartment Instrument Panel ...

Page 22: ...2003 PRIUS EWD493U 21 F Body ...

Page 23: ...2003 PRIUS EWD493U 22 F RELAY LOCATIONS Fusible Link Block No 1 Engine Compartment Left See Page 20 ...

Page 24: ...2003 PRIUS EWD493U 23 F Fusible Link Block No 2 Luggage Room Left See Page 21 2 Engine Room R B No 2 Right Side of Reserve Tank See Page 20 ...

Page 25: ...2003 PRIUS EWD493U 24 F RELAY LOCATIONS 3 Engine Room R B No 3 EngineCompartment Right See Page 20 ...

Page 26: ...2003 PRIUS EWD493U 25 MEMO ...

Page 27: ...2003 PRIUS EWD493U 26 F RELAY LOCATIONS Engine Room J B EngineCompartment Left See Page 20 ...

Page 28: ...2003 PRIUS EWD493U 27 F ...

Page 29: ...2003 PRIUS EWD493U 28 F RELAY LOCATIONS Engine Room J B Inner Circuit ...

Page 30: ...2003 PRIUS EWD493U 29 F ...

Page 31: ...2003 PRIUS EWD493U 30 F RELAY LOCATIONS Instrument Panel J B CowlSide Panel LH See Page 20 ...

Page 32: ...2003 PRIUS EWD493U 31 F ...

Page 33: ...2003 PRIUS EWD493U 32 F RELAY LOCATIONS Instrument Panel J B Inner Circuit ...

Page 34: ...2003 PRIUS EWD493U 33 F ...

Page 35: ...ve C 3 Circuit Breaker Sensor C 4 Converter C 5 Converter C 6 Crankshaft Position Sensor D 1 DC Motor E 1 Engine Coolant Temp Sensor E 2 Engine Hood Courtesy SW F 1 Front Airbag Sensor LH F 2 Front Airbag Sensor RH F 3 Front Parking Light LH F 4 Front Parking Light RH F 5 Front Side Marker Light LH F 6 Front Side Marker Light RH F 7 Front Turn Signal Light LH F 8 Front Turn Signal Light RH F 9 Fro...

Page 36: ...verter I 13 Inverter I 14 Inverter K 1 Knock Sensor M 1 Mass Air Flow Meter M 2 Motor Generator No 1 M 3 Motor Generator No 2 M 4 Motor Generator No 2 N 1 Noise Filter Ignition O 1 Oil Pressure SW R 1 Radiator Fan Motor S 1 Steering Shaft Torque Sensor T 1 Theft Deterrent Horn T 2 Throttle Control Motor T 3 Throttle Position Sensor V 1 Vacuum Sensor HC Adsorber and Catalyst System V 2 VSV EVAP V 3...

Page 37: ...mbly A21 Airbag Squib Steering Wheel Pad A22 Ashtray Illumination B 5 Back Up Light Relay B 6 Blower Motor B 7 Blower Motor Linear Controller B 8 Body ECU B 9 Body ECU B10 Brake ECU B 11 Brake ECU B12 Brake ECU B13 Brake ECU B14 Brake Warning Buzzer C 7 Center Cluster SW C 8 Cigarette Lighter C10 Combination Meter C11 Combination Meter C12 Combination SW C13 Combination SW C14 Combination SW D 2 D...

Page 38: ...n Connector J 14 Junction Connector J 15 Junction Connector J 16 Junction Connector J 17 Junction Connector J 18 Junction Connector J 19 Junction Connector J 20 Junction Connector J 21 Junction Connector J 22 Junction Connector J 23 Junction Connector J 24 Junction Connector J 25 Junction Connector J 26 Junction Connector J 27 Junction Connector J 28 Junction Connector J 29 Junction Connector L 1 ...

Page 39: ...Detection SW Rear LH D12 Door Lock Motor and Door Unlock Detection SW Rear RH D13 Door Lock Motor Door Key Lock and Unlock SW and Door Unlock Detection SW Front LH D14 Door Lock Motor Door Key Lock and Unlock SW and Door Unlock Detection SW Front RH F 14 Front Door Speaker LH F 15 Front Door Speaker RH F 16 Fuel Pump and Fuel Sender F 17 Fusible Link Block No 2 F 18 Fusible Link Block No 2 H15 Hig...

Page 40: ... Rear LH P13 Power Window Motor Rear RH P14 Pretensioner LH P15 Pretensioner RH R 6 Rear Combination Light LH R 7 Rear Combination Light RH R 8 Rear Speaker LH R 9 Rear Speaker RH R10 Remote Control Mirror LH R11 Remote Control Mirror RH S 4 Side Airbag Sensor LH S 5 Side Airbag Sensor RH S 6 Side Airbag Squib LH S 7 Side Airbag Squib RH S 8 System Main Relay S 9 System Main Relay S10 System Main ...

Page 41: ...2003 PRIUS EWD493U 40 G ELECTRICAL WIRING ROUTING Location of Connector Joining Wire Harness and Wire Harness Location of Ground Points Location of Splice Points ...

Page 42: ... PRIUS EWD493U 41 G Connector Joining Wire Harness and Wire Harness 1 1 EA1 DARK GRAY Code Joining Wire Harness and Wire Harness Connector Location EA1 Engine Wire and Engine No 4 Wire Near the Radiator Fan ...

Page 43: ...2003 PRIUS EWD493U 42 G ELECTRICAL WIRING ROUTING Location of Connector Joining Wire Harness and Wire Harness Location of Ground Points ...

Page 44: ...wl Side Panel LH IC1 Front Door LH Wire and Cowl Wire Left Kick Panel ID1 Instrument Panel Wire and Cowl Wire Left Kick Panel ID2 Instrument Panel Wire and Cowl Wire Left Kick Panel IE1 Instrument Panel Wire and Engine Room Main Wire Left Kick Panel IF1 Instrument Panel Wire and Floor Wire Left Kick Panel IF2 Instrument Panel Wire and Floor Wire Left Kick Panel IG1 Front Door LH Wire and Instrumen...

Page 45: ...2003 PRIUS EWD493U 44 G ELECTRICAL WIRING ROUTING Location of Connector Joining Wire Harness and Wire Harness Location of Splice Points ...

Page 46: ...2 Floor No 3 Wire and Instrument Panel Wire Under the Instrument Panel Center IK1 Engine Wire and Engine Room Main Wire Right Kick Panel IL1 Instrument Panel Wire and Engine Room Main Wire Right Kick Panel IM1 Engine Room Main Wire and Cowl Wire Right Kick Panel IN1 Front Door RH Wire and Instrument Panel Wire Right Kick Panel IO1 Engine Wire and Cowl Wire Right Kick Panel IP1 Instrument Panel Wir...

Page 47: ...2003 PRIUS EWD493U 46 G ELECTRICAL WIRING ROUTING Location of Connector Joining Wire Harness and Wire Harness Location of Ground Points Location of Splice Points ...

Page 48: ...1 2 3 4 5 6 7 8 9 10 5 4 3 2 1 10 9 8 7 6 1 2 3 4 5 6 7 8 1 2 3 4 5 6 7 8 BA1 GRAY BB1 BC1 Code Joining Wire Harness and Wire Harness Connector Location BA1 Rear Door No 2 Wire and Floor Wire Center Pillar LH BB1 Rear Door No 1 Wire and Cowl Wire Center Pillar RH BC1 Cowl Wire and Fuel Tank Wire Near the Fuel Tank ...

Page 49: ...2003 PRIUS EWD493U 48 MEMO ...

Page 50: ...ISER SYSTEM 78 ILLUMINATION 92 INTERIOR LIGHT 108 KEY REMINDER 114 LIGHT AUTO TURN OFF 104 LIGHT REMINDER BUZZER 114 MULTIPLEX COMMUNICATION SYSTEM COMMUNICAION BUS 112 NAVIGATION SYSTEM 156 POWER SOURCE 50 POWER WINDOW 126 RADIATOR FAN AND CONDENSER FAN 186 RADIO AND PLAYER 152 REAR WINDOW DEFOGGER 180 REMOTE CONTROL MIRROR 130 SEAT BELT WARNING 118 SHIFT LOCK 132 SRS 167 STOP LIGHT 100 TAILLIGHT...

Page 51: ...10A TURN HAZ 15A DOME 10A BATT FAN 15A AM2 20A ABS NO 3 20A HV 10A HEAD LO RH 10A HEAD LO LH 10A HEAD HI LH 10A HEAD HI RH SHORT PIN SHORT PIN HEAD RELAY BATTERY 5A DC DC S B G B B B W R W 30A HTR2 30A HTR1 10A ABS NO 4 100A DC DC 120A MAIN 30A HEAD 1 2 DIM RELAY W R 1 2 1 2 30A RDI 50A HTR 2 W R B R G G W B R L 2C 2 2G 1 1 2 30A ABS NO 2 3 1 2 7 5A DRL 3 R L 1 2 1 2 1J 11 R TO CONVERTER A 2 B R T...

Page 52: ...10A SRS ACC 10A HTR 10A GAUGE 30A WIPER 5A PANEL 7 5A TAIL 30A POWER 30A DOOR 40A DEF 15A STOP 20A PWR1 7 5A ECU B 7 5A OBDI I 5A AM1 10A HEAD RH 10A HEAD LH W R P L B Y W G W W IGNITION SW I15 ACC RELAY IG1 RELAY TAIL RELAY B W 6 1 2 2 1 R W 8 5A ECU IG 1 W O DAYTIME RUNNING LIGHT 2 W DAYTIME RUNNING LIGHT 15A WASHER ...

Page 53: ...y at ST position PARTS LOCATION Code See Page Code See Page Code See Page F10 A 34 F13 D 34 I15 37 F11 B 34 F17 A 38 F12 C 34 F18 B 38 RELAY BLOCKS Code See Page Relay Blocks Relay Block Location 3 24 Engine Room R B No 3 Engine Compartment Right JUNCTION BLOCK AND WIRE HARNESS CONNECTOR Code See Page Junction Block and Wire Harness Connector Location 1B 27 Engine Room Main Wire and Engine Room J ...

Page 54: ...2003 PRIUS EWD493U 53 MEMO ...

Page 55: ... W STOP LIGHT SW S 3 B W 8 IG A A A B B C B C B A D 31 D 24 5 A 4 CRUISE CONTROL SW COMB SW C14 W B W B W B W B W B W B D 1 STP GND1 GND2 G W JUNCTION CONNECTOR J17 FROM STOP LIGHT SW W B JUNCTION CONNECTOR B J18 J19 A JUNCTION CONNECTOR B J24 A J25 H14 D H13 E H12 B C H11 H10 A HYBRID VEHICLE CONTROL ECU B W CCS CRUISE RES ACC SET COAST CANCEL 11 2G 5 2B 1J 3 3 2 5 1 1A 2 1K 3 IK1 14 M 1 2 B W B ...

Page 56: ... LG R R B W B R L R L W L B LG R R B W B R W B 1 W B W B W B W B W B W B E E JUNCTION CONNECTOR J11 JUNCTION CONNECTOR J21 W B JUNCTION CONNECTOR B J22 A J23 JUNCTION CONNECTOR B J24 J25 A ACCEL POSITION SENSOR A13 PARK NEUTRAL POSITION SW P 1 H14 D H13 E H12 B C H11 H10 A HYBRID VEHICLE CONTROL ECU EOM A W B W B VCP1 VPA1 EP1 VCP2 VPA2 EP2 L L 3 12 D EP1 W W 2 15 D VPA2 A E 1 W B W B 1 SHIELDED W...

Page 57: ... 1K 3 G R B W Y BR G W B R G R R G B R G W BR Y W B R G W B W B W B W B W B W B 1 1 1 1 W B W B HYBRID VEHICLE CONTROL ECU A H10 H11 C B H12 E H13 D H14 JUNCTION CONNECTOR B J 8 J 9 A W B W B W B W B MSN MSNG GMT GMTG GCSG GCS GRFG GRF GSN GSNG 1 W B GSNG GSN GRF GRFG GCS GCSG GMTG GMT MSNG MSN MOTOR GENERATOR NO 2 C M 3 M 4 B MOTOR GENERATOR NO 1 M 2 A W B W B ...

Page 58: ...ECTOR J17 L Y BR R Y O P O R Y BR Y L P 1 1 1 1 W B W B SPDO ESTP HTE HTE ETH ETH C 10 SPHV C 16 ESTP C 18 HTE C 19 HTE C 27 ETH C 28 ETH D 13 MPX2 D 14 MPX1 ENGINE CONTROL MODULE D E 9 E10 C GR GR L 16 15 GR B MPX MPX BODY ECU B 8 GR B GR W B W B W B W B MCS MCSG MRF MRFG MMTG MMT MOTOR GENERATOR NO 2 C M 3 M 4 B B 10 GO G G GO 21 C IA2 9 11 4 MPD2 MPD1 4 11 MP2 MPX GR B G 1 GATEWAY ECU A 7 A C A...

Page 59: ...UU MWU MIT MSDN MSIV IE G R G W B R Y G W B B W R G L Y G R G W B R Y G W B B W R G L Y 1 1 1 1 1 1 1 1 W B W B A A A A A A JUNCTION CONNECTOR J 7 JUNCTION CONNECTOR J 1 HYBRID VEHICLE CONTROL ECU A H10 H11 C B H12 E H13 D H14 INVERTER C I 9 I10 D A I11 A B 6 W B W B GR B GR GR B GR B I12 W B A W B A W B W B E I13 F I14 M SINV M SDOWN M INVT M WU M UU M VU M GINV M IVA M IVB M IWB VB M IWA G IVA G...

Page 60: ... 2 2 2 HIGH VOLTAGE 273 6V 3 4 D 5 D IA1 13 12 IA1 I 9 B 4 2 IH1 2 B R B R A L O W G W G W G W G L O W G B1 B2 NODD A 4 A 1 B 5 W G FUSIBLE LINK BLOCK NO 2 F17 5A DC DC S CONVERTER C 4 A A 2 14 IE1 10 Y Y IDH A C AMPLIFIER A 7 FROM POWER SOURCE SYSTEM SEE PAGE 50 W G E 4 C 6 IH1 4 IF1 10 O O V R V R ILK 2 1 INTERLOCK SW I17 W G E I13 F I14 B C 5 100A DC DC F10 FUSIBLE LINK BLOCK NO 1 W 1 B 1 CEI C...

Page 61: ...B H12 E H13 D H14 GB 1B O 2 O 2 IH O 2 GR B GR BR 10A GAUGE FROM POWER SOURCE SYSTEM SEE PAGE 50 2A 5 15A DOME 1J 7 L Y 2G 2 2A 4 L L A 21 A 22 CHARGE OUTPUT CONTROL CRUISE A 14 B 2 L COMBINATION METER B C10 C11 A L V W 2B 7 2A 6 A 13 A G B G IE1 19 B 8 SPDI JUNCTION CONNECTOR B J27 J28 A V W V W W R 2 A 1 IH1 I 9 W G W G B 3 6 2B 7 2A O 2 W R GR GR B L W B W G GND IGCT GB IB01 ...

Page 62: ...Y W B BATTERY ECU B B17 B18 A JUNCTION CONNECTOR B J32 A J33 HYBRID VEHICLE CONTROL ECU A H10 H11 C B H12 E H13 D H14 CON1 CON2 CON3 HTD HTD DTH DTH 1 SHIELDED B 1 A 1 W B O 2 IF2 5 IF2 1 IF2 2 IF2 4 IF2 3 2 HIGH VOLTAGE 273 6V W G W G 1 C 7 A 2 A 6 A 5 A 4 A 3 A 1 D 1 E O 2 O 2 W B O 2 O 2 1 1 O 2 W B W B SYSTEM MAIN RELAY E S11 D S12 C S10 S 9 A S 8 B A C W B W B HTB HTB BTH BTH IB V V ...

Page 63: ... HYBRID VEHICLE BATTERY BUSBER MODULE D 10 TC D 21 SIL D 9 WFSE ID1 2 ID1 1 ID1 10 C E E 13 15 C E P P B P B Y Y P B P P B W L W L E JUNCTION CONNECTOR J16 TC WFSE E 10 HAI Y R E 9 HAO Y R 12 OP2 8 OP3 JUNCTION CONNECTOR J26 W G W G W 1 2 3 4 L L B B W W 5 W 7 SIL O 2 O 2 A 1 B 1 SERVICE PLUG O 2 O 2 HYBRID VEHICLE BATTERY BUSBER MODULE SENSOR O O 2 2 HYBRID VEHICLE BATTERY B H16 H17 A BATTERY ECU...

Page 64: ...2 A J 3 HYBRID VEHICLE CONTROL ECU A H10 H11 C B H12 E H13 D H14 BATT W G 7 MREL O G Y JUNCTION CONNECTOR J 7 JUNCTION CONNECTOR J 1 2 HIGH VOLTAGE 273 6V BI W B W B W B FCVC 7 D B W 8 HEVC ABFS 3 E L 23 GSW2 TRANSPONDER KEY COMPUTER T 4 AIRBAG SENSOR ASSEMBLY A18 A W 8 A A A A B C W JUNCTION CONNECTOR B J22 A J23 IF1 3 BATTERY MOTOR BLOWER CONTROLLER B16 6 7 8 9 10 W R R G G W W W W HYBRID VEHICL...

Page 65: ... the memorized speed and controls the driving power of the motor and the engine by calculating the cruise control requirements so that both speed become equivalent 3 COAST CONTROL If the SET COAST switch is continued to be ON during the running with the cruise control the device recognizes the cruise control requirement is at 0 and decelerates the vehicle s speed Then the device memorizes the spee...

Page 66: ...ecomes slower than 40km h When the running speed becomes slower than the speed that 16 km h subtracted from the memorized speed 8 REGENERATIVE SYSTEM OPERATION This system operates the motor as a generator to change the kinetic energy of the vehicle into the electricity when accel pedal release or foot braking controls the vehicle and store the electricity in the battery C14 CRUISE CONTROL SW COMB...

Page 67: ...rness Connector Location IA1 42 Engine Room Main Wire and Cowl Wire Cowl Side Panel LH IA2 42 Engine Room Main Wire and Cowl Wire Cowl Side Panel LH IB1 42 Floor Wire and Cowl Wire Cowl Side Panel LH ID1 42 Instrument Panel Wire and Cowl Wire Left Kick Panel IE1 42 Instrument Panel Wire and Engine Room Main Wire Left Kick Panel IF1 42 Instrument Panel Wire and Floor Wire Left Kick Panel IF2 42 Ins...

Page 68: ...2003 PRIUS EWD493U 67 MEMO ...

Page 69: ... A FUSIBLE LINK BLOCK NO 2 F18 JUNCTION CONNECTOR B J 4 A J 5 FUSIBLE LINK BLOCK NO 1 D F12 C F13 W B W B W B W B B G B W R W R B W B W B W B B G R B R G R B R B B B B W B B B W B W R W G R G R B B B W B W A C FUEL PUMP F16 CIR OPN RELAY EFI RELAY FROM POWER SOURCE SYSTEM SEE PAGE 50 IGNITION SW I15 IG2 RELAY JUNCTION CONNECTOR J17 B BATTERY JUNCTION CONNECTOR J 7 JUNCTION CONNECTOR J 1 A A JUNCTI...

Page 70: ...IGNITION COIL AND IGNITER NO 4 I 4 INJECTOR NO 1 I 5 ENGINE COOLANT TEMP SENSOR E 1 VSV EVAP V 2 MASS AIR FLOW METER M 1 JUNCTION CONNECTOR B J24 A J25 B R W B R G B R Y B R Y Y G B W B W W B B W W B B W W B B W W B B W 1 R B G R 1 W R L B G R G R R W B W B W B B W B W B W B W B W B B W B B G R G R BR BR B B 1 B B B B B BR BR B R B R B R B R W B W B W B W B W B THW EVG VG THA EVP1 B MREL FC BATT I...

Page 71: ...B B BR B B BR BR BR B W B B B B W B W B W P L 1 THROTTLE CONTROL MOTOR T 2 VAPOR PRESSURE SENSOR V 4 VSV CANISTER CLOSED VALVE V 5 VSV PARGE FLOW SWITCHING VALVE V 6 NOISE FILTER IGNITION N 1 INJECTOR NO 4 I 8 INJECTOR NO 3 I 7 INJECTOR NO 2 I 6 VACUUM SENSOR HC ADSORBER AND CATALYST SYSTEM V 1 THROTTLE POSITION SENSOR T 3 JUNCTION CONNECTOR B J 8 A J 9 JUNCTION CONNECTOR B J12 A J13 VTA2 VTA PTNK...

Page 72: ...K 1 SENSOR 1 H 3 HEATED OXYGEN SENSOR BANK 1 SENSOR 2 H 9 B JUNCTION CONNECTOR B J22 A J23 HT1B OX1B E11 OX1A HT1A HCC E2 SPHV 1 3 HTE HTE ETH ETH OCV OCV FAN FROM FAN NO 1 AND FAN NO 2 RELAY 1 1 1 1 1 SHIELDED E10 D C E 9 A E 8 E 7 B ENGINE CONTROL MODULE I 6 1 BR D 5 V W SPD TO COMBINATION METER SPDO HTE HTE ETH ETH1 D 6 D 29 D 19 D 28 D 27 C 21 G GO GO B 10 C 16 R Y ESTP ESTP D 8 D 1 HYBRID VEH...

Page 73: ...G G R G G BR BR BR 1 1 BR W B W B BR BR W B W B G 1 1 1 1 1 1 GR L G R W L P B 1 1 MPX2 MPX1 W SIL TC E02 E01 E1 NE NE G2 ENGINE CONTROL MODULE B E 7 E 8 A E 9 C D E10 A 28 EA1 1 1 B B KNOCK SENSOR K 1 1 9 A 3 A EA W B W B W B W B E03 ME01 FROM POWER SOURCE SYSTEM SEE PAGE 50 15A THRO 1A 8 A 6 BM GR GR D 22 5 P G ACT NEO LG 4 3 D A C AMPLIFIER A 8 KNK1 I 7 I 7 I 7 1 1 1 NE ACT A A JUNCTION CONNECT...

Page 74: ... CONNECTOR 3 D 2 JUNCTION CONNECTOR J18 W L W P B W L W P B W L BR BR BR BR GR GR B GR GR B GR L 1 1 W B W B G R GR B GR GR L G R W L P B 1 1 JUNCTION CONNECTOR J17 MPX MPD1 MPX SG CG BAT TC SIL MPD2 MPX MP2 ID 2K 8 2D 8 W B W B A JUNCTION CONNECTOR J11 W B W B 4 ID1 1 ID1 2 1 SHIELDED COMBINATION METER B C10 C11 A 10A GAUGE 2A 5 L A 22 MALFUNCTION INDICATOR LAMP A 14 IH 2A 7 2B 6 L BR A A A A A A...

Page 75: ...plied to TERMINAL B of the engine control module via EFI relay 8 Engine knock signal circuit Engine knocking is detected by knock sensor and the signal is input into TERMINAL KNK1 of the engine control module as a control signal 2 CONTROL SYSTEM SFI system The SFI system monitors the engine condition through the signals which are input from each sensor to the engine control module The best fuel in...

Page 76: ...th the ignition SW on and the engine stopping TC E1 9 14 volts with the ignition SW on and the engine stopping KNK1 E2 Pulse generation with the engine idling NE G2 NE Pulse generation with the engine idling OCV OCV Pulse generation with the ignition SW on and the engine stopping IGT1 IGT2 IGT3 IGT4 E1 Pulse generation with the engine idling 10 20 30 40 E01 Pulse generation with the engine idling ...

Page 77: ...Location EA1 40 Engine Wire and Engine No 4 Wire Near the Radiator Fan IA1 42 Engine Room Main Wire and Cowl Wire Cowl Side Panel LH IA2 42 Engine Room Main Wire and Cowl Wire Cowl Side Panel LH ID1 42 Instrument Panel Wire and Cowl Wire Left Kick Panel ID2 42 Instrument Panel Wire and Cowl Wire Left Kick Panel IE1 42 Instrument Panel Wire and Engine Room Main Wire Left Kick Panel IK1 44 Engine Wi...

Page 78: ...2003 PRIUS EWD493U 77 MEMO ...

Page 79: ...NNECTOR B J12 A J13 B D A B JUNCTION CONNECTOR B J27 A J28 A A B A JUNCTION CONNECTOR B J24 A J25 ID A A 2D 8 1 2 ID1 9 IB1 3 1 ID2 8 JUNCTION CONNECTOR J10 4 6 7 11 7 2 3 8 6 DATA LINK CONNECTOR 3 D 2 HYBRID VEHICLE CONTROL ECU H14 CENTER CLUSTER SW C 7 DOOR COURTESY SW FRONT LH D 6 UNLOCK WARNING SW U 1 RADIO AND PLAYER C R 3 B R 4 FUSIBLE LINK BLOCK NO 1 D F12 C F13 BATTERY B G B W R W R B W B ...

Page 80: ...artment Left 1J 27 Engine Room Main Wire and Engine Room J B Engine Compartment Left 2C 30 Instrument Panel Wire and Instrument Panel J B Cowl Side Panel LH 2D 30 Instrument Panel Wire and Instrument Panel J B Cowl Side Panel LH 2G 31 Engine Room Main Wire and Instrument Panel J B Cowl Side Panel LH 2K 31 Cowl Wire and Instrument Panel J B Cowl Side Panel LH CONNECTOR JOINING WIRE HARNESS AND WIRE...

Page 81: ...A HEAD HI RH 10A HEAD HI LH 10A HEAD LO RH 10A HEAD LO LH 2 1 3 2 1 3 IA1 9 1E 5 1E 2 1F 7 1F 6 3 1 3 2 5 3 3 7 5A DRL 3 3 IE 1E 3 1F 8 IA2 17 IA2 6 JUNCTION CONNECTOR J 1 A G R R W R Y R R G R G R W R W B W B R G L R G L R W R B R L R G HEAD RELAY DIM RELAY DRL RELAY R B HEADLIGHT LH H 1 HEADLIGHT RH H 2 R Y G R 2 1 E 2 R B ...

Page 82: ...AKE SW P 2 COMBINATION SW C13 DIODE DAYTIME RUNNING LIGHT D 5 1 E E 4 6 3 12 A C 8 7 A 17 2 E 1 7 8 11 9 2 5 A C 14 R W R G R L R G R G R L R W R R G R G L O R Y Y B W B R G L Y B R Y BR W B L R B L R G R W R R G R G R W W B E DRL H DIM H LP B IG HI PKB CHG IND ID2 3 13 16 JUNCTION CONNECTOR B J12 A J13 B 2 B 17 A 9 BODY ECU B B 8 B 9 A Y B A F B H R G R G JUNCTION CONNECTOR B J27 A J28 E FLASH LI...

Page 83: ...7 B9 B 36 H2 34 J20 37 C10 36 J1 37 J27 A 37 C13 36 J11 37 J28 B 37 D3 36 J12 A 37 P2 37 D5 36 J13 B 37 RELAY BLOCKS Code See Page Relay Blocks Relay Block Location 3 24 Engine Room R B No 3 Engine Compartment Right JUNCTION BLOCK AND WIRE HARNESS CONNECTOR Code See Page Junction Block and Wire Harness Connector Location 1E 1F 27 Engine Room Main Wire and Engine Room J B Engine Compartment Left 1J...

Page 84: ...2003 PRIUS EWD493U 83 SPLICE POINTS Code See Page Wire Harness with Splice Points Code See Page Wire Harness with Splice Points E2 40 Engine Room Main Wire ...

Page 85: ... F A F 2A 10 2I 7 16 17 E E 2 A 17 7 8 13 C 1 D 1 R G R Y R Y R G R L R G R W R W B R W R W R R B G W B R G L R G R G R Y R Y R G E R W SHORT PIN SHORT PIN HEAD RELAY HEADLIGHT LH H 1 JUNCTION CONNECTOR J20 JUNCTION CONNECTOR B J 4 A J 5 BATTERY FUSIBLE LINK BLOCK NO 1 D F12 C F13 JUNCTION CONNECTOR B J12 A J13 COMBINATION SW C13 JUNCTION CONNECTOR J17 BODY ECU B 9 HRLY H R W R Y R G LIGHT CONTROL...

Page 86: ...2003 PRIUS EWD493U 85 IH BR 6 2B 7 2A L L FROM POWER SOURCE SYSTEM SEE PAGE 50 14 17 15A DOME 1J 7 HIGH BEAM HEAD 4 2A 2 2G L L Y 21 COMBINATION METER C10 L ...

Page 87: ...ness Connector Location 1B 1F 27 Engine Room Main Wire and Engine Room J B Engine Compartment Left 1J g g g 2A 30 Instrument Panel Wire and Instrument Panel J B Cowl Side Panel LH 2B 30 Instrument Panel Wire and Instrument Panel J B Cowl Side Panel LH 2G 31 Engine Room Main Wire and Instrument Panel J B Cowl Side Panel LH 2I 31 Cowl Wire and Instrument Panel J B Cowl Side Panel LH CONNECTOR JOININ...

Page 88: ...2003 PRIUS EWD493U 87 MEMO ...

Page 89: ...LG R LG R W B W B B G W TAIL RELAY BODY ECU B 9 JUNCTION CONNECTOR B J 4 J 5 A B 1 D 1 W B FUSIBLE LINK BLOCK NO 1 D F11 B F13 FUSIBLE LINK BLOCK NO 2 F18 LIGHT CONTROL SW COMB SW C13 FRONT SIDE MARKER LIGHT LH F 5 FRONT PARKING LIGHT RH F 4 FRONT PARKING LIGHT LH F 3 FRONT SIDE MARKER LIGHT RH F 6 JUNCTION CONNECTOR J 7 JUNCTION CONNECTOR J 1 JUNCTION CONNECTOR J17 BATTERY OFF TAIL HEAD 2L 5 G E ...

Page 90: ...A A A B B C B C BI BK W B G G G G G G G W B W B W B W B W B JUNCTION CONNECTOR B J32 J33 A LICENSE PLATE LIGHT LH L 2 TAILLIGHT LH REAR COMB LIGHT LH R 6 LICENSE PLATE LIGHT RH L 3 TAILLIGHT RH REAR COMB LIGHT RH R 7 JUNCTION CONNECTOR B J32 J33 A G G 2 2 1 1 ...

Page 91: ... Side Panel LH 2J 31 Cowl Wire and Instrument Panel J B Cowl Side Panel LH 2K 31 Cowl Wire and Instrument Panel J B Cowl Side Panel LH 2L 31 Floor Wire and Instrument Panel J B Cowl Side Panel LH CONNECTOR JOINING WIRE HARNESS AND WIRE HARNESS Code See Page Joining Wire Harness and Wire Harness Connector Location IA1 42 Engine Room Main Wire and Cowl Wire Cowl Side Panel LH ID2 42 Instrument Panel...

Page 92: ...2003 PRIUS EWD493U 91 MEMO ...

Page 93: ... BR 1 120A MAIN 100A DC DC 2H 1 16 2K 6 18 2 3 1 5 ID2 2 ID2 6 14 IG 11 A T LG LG LG R LG R W B B G W TRLY TAIL RELAY 1 D BODY ECU B 9 1 B FUSIBLE LINK BLOCK NO 1 D F11 B F13 F18 FUSIBLE LINK BLOCK NO 2 LIGHT CONTROL SW COMB SW C13 BATTERY OFF TAIL HEAD JUNCTION CONNECTOR J17 5A PANEL 2D 1 LG LG LG W L ...

Page 94: ... SEE PAGE 50 HAZARD WARNING SW H 7 CENTER CLUSTER SW C 7 LIGHT CONTROL RHEOSTAT L 1 JUNCTION CONNECTOR J21 JUNCTION CONNECTOR J24 JUNCTION CONNECTOR J11 JUNCTION CONNECTOR J21 JUNCTION CONNECTOR J21 RADIO AND PLAYER B R 2 A R 3 JUNCTION CONNECTOR B J22 A J23 JUNCTION CONNECTOR B J27 J28 A W L JUNCTION CONNECTOR J21 LG LG A H A 21 15A DOME 1J 7 2G 2 2A 4 L Y L LG W L LG LG C TC E ILL T COMBINATION ...

Page 95: ...nector Location 1J 27 Engine Room Main Wire and Engine Room J B Engine Compartment Left 2A 2B 30 Instrument Panel Wire and Instrument Panel J B Cowl Side Panel LH 2D 2G 31 Engine Room Main Wire and Instrument Panel J B Cowl Side Panel LH 2H 31 Engine Room Main Wire and Instrument Panel J B Cowl Side Panel LH 2K 31 Cowl Wire and Instrument Panel J B Cowl Side Panel LH CONNECTOR JOINING WIRE HARNESS...

Page 96: ...2003 PRIUS EWD493U 95 MEMO ...

Page 97: ... G Y LR E ER EL R L W W R L G R G R W B G B G B G B W B W B W B G Y G Y G Y G Y L B G W B W B W B B IG HAZ LL JUNCTION CONNECTOR J20 HAZARD SW HAZARD WARNING SW H 7 TURN SIGNAL FLASHER RELAY T 5 IA1 11 G Y TURN SIGNAL SW COMB SW C13 JUNCTION CONNECTOR J17 JUNCTION CONNECTOR J 1 JUNCTION CONNECTOR J 7 FRONT TURN SIGNAL LIGHT RH F 8 FRONT TURN SIGNAL LIGHT LH F 7 JUNCTION CONNECTOR J18 JUNCTION CONN...

Page 98: ...Y G B W B W B W B W B JUNCTION CONNECTOR B J22 J23 A JUNCTION CONNECTOR J24 TURN SIGNAL INDICATOR LIGHT COMB METER C10 REAR TURN SIGNAL LIGHT LH REAR COMB LIGHT LH R 6 REAR TURN SIGNAL LIGHT RH REAR COMB LIGHT RH R 7 JUNCTION CONNECTOR J11 JUNCTION CONNECTOR B J32 J33 A RH LH 3 3 5 5 IH 2A 7 2B 6 14 L BR BR ...

Page 99: ...NCTION BLOCK AND WIRE HARNESS CONNECTOR Code See Page Junction Block and Wire Harness Connector Location 1J 27 Engine Room Main Wire and Engine Room J B Engine Compartment Left 2A 2B 30 Instrument Panel Wire and Instrument Panel J B Cowl Side Panel LH 2D 2F 31 Engine Room Main Wire and Instrument Panel J B Cowl Side Panel LH 2J 31 Cowl Wire and Instrument Panel J B Cowl Side Panel LH 2K 31 Cowl Wi...

Page 100: ...2003 PRIUS EWD493U 99 MEMO ...

Page 101: ... A C B A B A 2 1 B C B C A B BI BK E E G W G W W B W B W B W B G W G W G W G W R B W B STOP LIGHT SW S 3 JUNCTION CONNECTOR J14 JUNCTION CONNECTOR B J30 J31 A JUNCTION CONNECTOR B J32 J33 A HIGH MOUNTED STOP LIGHT H15 STOP LIGHT RH REAR COMB LIGHT RH R 7 STOP LIGHT LH REAR COMB LIGHT LH R 6 2 2 5 5 ...

Page 102: ...HARNESS CONNECTOR Code See Page Junction Block and Wire Harness Connector Location 2K 31 Cowl Wire and Instrument Panel J B Cowl Side Panel LH CONNECTOR JOINING WIRE HARNESS AND WIRE HARNESS Code See Page Joining Wire Harness and Wire Harness Connector Location IB1 42 Floor Wire and Cowl Wire Cowl Side Panel LH GROUND POINTS Code See Page Ground Points Location BI 46 Left Side of Rear Pillar BK 46...

Page 103: ... JUNCTION CONNECTOR B J27 A J28 REV JUNCTION CONNECTOR B J30 A J31 JUNCTION CONNECTOR J22 MPX MPX MPD1 RL MPX2 MPX1 HTE HTE JUNCTION CONNECTOR J11 BODY ECU B 8 A C AMPLIFIER A 7 GATEWAY ECU G 1 JUNCTION CONNECTOR J24 BACK UP LIGHT LH REAR COMB LIGHT LH R 6 BACK UP LIGHT RH REAR COMB LIGHT RH R 7 JUNCTION CONNECTOR B J32 A J33 ENGINE CONTROL MODULE D E 9 E10 C 5 4 5 4 E 14 D 29 D 19 HYBRID VEHICLE ...

Page 104: ...e Harness Connector Location 2A 2B 30 Instrument Panel Wire and Instrument Panel J B Cowl Side Panel LH 2C 30 Instrument Panel Wire and Instrument Panel J B Cowl Side Panel LH 2D 2K 31 Cowl Wire and Instrument Panel J B Cowl Side Panel LH CONNECTOR JOINING WIRE HARNESS AND WIRE HARNESS Code See Page Joining Wire Harness and Wire Harness Connector Location IF1 42 Instrument Panel Wire and Floor Wir...

Page 105: ... B L B 2 1 1 1 R W 2 2 2 1 H H LP TAIL RELAY HEAD RELAY SHORT PIN JUNCTION CONNECTOR J20 DAYTIME RUNNING LIGHT RELAY D 3 JUNCTION CONNECTOR J27 UNLOCK WARNING SW U 1 OFF TAIL HEAD 100A DC DC FUSIBLE LINK BLOCK NO 2 F18 FUSIBLE LINK BLOCK NO 1 C F11 B F12 JUNCTION CONNECTOR B J12 A J13 JUNCTION CONNECTOR B J24 A J25 DOOR COURTESY SW FRONT LH D 6 JUNCTION CONNECTOR J17 LIGHT CONTROL SW COMB SW C13 J...

Page 106: ...INAL B 11 of the body ECU to TERMINAL B 18 in taillight circuit and from TERMINAL B 2 to TERMINAL B 17 in headlight circuit As a result all lights are turned off automatically HEAD RELAY 2 1 Closed with the light control SW at HEAD position or the dimmer SW at FLASH position Closed with the engine running and the parking brake pedal released Parking brake SW off w daytime running light TAIL RELAY ...

Page 107: ...e Harness and Wire Harness Connector Location IA2 42 Engine Room Main Wire and Cowl Wire Cowl Side Panel LH IB1 42 Floor Wire and Cowl Wire Cowl Side Panel LH ID2 42 Instrument Panel Wire and Cowl Wire Left Kick Panel GROUND POINTS Code See Page Ground Points Location ID 42 Cowl Side Panel LH IG 42 Cowl Side Panel RH ...

Page 108: ...2003 PRIUS EWD493U 107 MEMO ...

Page 109: ...U B 8 A JUNCTION CONNECTOR B J30 J31 A GATEWAY ECU G 1 ENGINE CONTROL MODULE E10 JUNCTION CONNECTOR J33 PERSONAL LIGHT P 5 INTERIOR LIGHT I16 LUGGAGE COMPARTMENT LIGHT L 5 DOOR COURTESY SW REAR LH D 8 DOOR COURTESY SW REAR RH D 9 DOOR COURTESY SW FRONT LH D 6 DOOR COURTESY SW FRONT RH D 7 JUNCTION CONNECTOR J16 LUGGAGE COMPARTMENT LIGHT SW L 6 JUNCTION CONNECTOR B J12 A J13 JUNCTION CONNECTOR B J3...

Page 110: ...2003 PRIUS EWD493U 109 B 3 B 2 A 21 A 14 2B 6 2A 7 11 4 GR B GR B L MPX GR GR B GR B L L BR MP2 A C AMPLIFIER A 7 COMBINATION METER B C10 C11 A DOOR IH ...

Page 111: ... 27 Engine Room Main Wire and Engine Room J B Engine Compartment Left 2A 2B 30 Instrument Panel Wire and Instrument Panel J B Cowl Side Panel LH 2C 30 Instrument Panel Wire and Instrument Panel J B Cowl Side Panel LH 2D 2G 31 Engine Room Main Wire and Instrument Panel J B Cowl Side Panel LH 2K 31 Cowl Wire and Instrument Panel J B Cowl Side Panel LH 2L 31 Floor Wire and Instrument Panel J B Cowl S...

Page 112: ...2003 PRIUS EWD493U 111 MEMO ...

Page 113: ...PLEX COMMUNICATION SYSTEM COMMUNICATION BUS MPX1 MPX2 ENGINE CONTROL MODULE E10 MPD1 MPD2 GATEWAY ECU G 1 MP2 MPX A C AMPLIFIER A 7 MPX MPX COMBINATION METER C11 MPX MPX BODY ECU B 8 GR GR B GR GR B 4 14 15 3 4 11 13 16 2 11 GR L ...

Page 114: ...2003 PRIUS EWD493U 113 MEMO ...

Page 115: ...W B G LG LG R G R G R G R G R W R LG R R LG R W B R W R W R W 2 1 1 1 R W 2 2 2 1 H HRLY TRLY H LP TAIL RELAY HEAD RELAY SHORT PIN JUNCTION CONNECTOR J20 DAYTIME RUNNING LIGHT RELAY D 3 OFF TAIL HEAD 100A DC DC FUSIBLE LINK BLOCK NO 2 F18 FUSIBLE LINK BLOCK NO 1 C F11 B F12 JUNCTION CONNECTOR B J12 A J13 DOOR COURTESY SW FRONT LH D 6 JUNCTION CONNECTOR J17 LIGHT CONTROL SW COMB SW C13 D F13 BATTER...

Page 116: ... J11 12 1 W DAYTIME RUNNING LIGHT 2 W O DAYTIME RUNNING LIGHT BODY ECU B B 8 B 9 A L A 16 MPX A 15 MPX GR MPX2 MPX1 14 13 GR L MPD2 MPD1 4 11 B 2 BUZZER B 3 A 22 A 21 GR L L GR B MPX MP2 4 11 15A DOME FROM POWER SOURCE SYSTEM SEE PAGE 50 1J 7 2G 2 2A 4 L Y GR B GR B GR B ENGINE CONTROL MODULE E10 GATEWAY ECU G 1 A C AMPLIFIER A 7 COMBINATION METER B C10 C11 A 2A 7 2B 6 A 14 IH L BR KSW ...

Page 117: ... See Page A7 36 E10 36 J13 B 37 B8 A 36 F11 B 34 J17 37 B9 B 36 F12 C 34 J20 37 C10 A 36 F13 D 34 J24 A 37 C11 B 36 F18 38 J25 B 37 C13 36 G1 37 J27 37 D3 36 J11 37 U1 37 D6 38 J12 A 37 JUNCTION BLOCK AND WIRE HARNESS CONNECTOR Code See Page Junction Block and Wire Harness Connector Location 1B 1F 27 Engine Room Main Wire and Engine Room J B Engine Compartment Left 1J g g g 2A 2B 30 Instrument Pan...

Page 118: ...2003 PRIUS EWD493U 117 GROUND POINTS Code See Page Ground Points Location ID 42 Cowl Side Panel LH IG 42 Cowl Side Panel RH IH 42 Right Kick Panel ...

Page 119: ...L L GR L GR L MPD1 MPX MPX2 PKBL MPX MPX DBKL MPX1 MPD2 MP2 A C AMPLIFIER A 7 GATEWAY ECU G 1 ENGINE CONTROL MODULE E10 BODY ECU B B 8 B 9 A COMBINATION METER B C10 C11 A JUNCTION CONNECTOR J29 15 A JUNCTION CONNECTOR B J24 A J25 JUNCTION CONNECTOR B J22 A J23 BUCKLE SW RH AND SEAT BELT WARNING OCCUPANT DETECTION SENSOR B21 IJ1 8 G O JUNCTION CONNECTOR J11 15A DOME 1J 7 L Y 2A 4 2G 2 A 21 L SEAT B...

Page 120: ...5 B 37 B21 38 J11 37 J29 37 JUNCTION BLOCK AND WIRE HARNESS CONNECTOR Code See Page Junction Block and Wire Harness Connector Location 1J 27 Engine Room Main Wire and Engine Room J B Engine Compartment Left 2A 2B 30 Instrument Panel Wire and Instrument Panel J B Cowl Side Panel LH 2D 2G 31 Engine Room Main Wire and Instrument Panel J B Cowl Side Panel LH 2K 31 Cowl Wire and Instrument Panel J B Co...

Page 121: ...1 S INT1 INT2 B1 OFF ON WF EW WIPER SW WASHER SW 4 3 5 2 1 FRONT WIPER AND WASHER SW COMB SW C12 2 1 B S WF E S 1 2 B E WASHER MOTOR W 1 W B M IH1 10 A W B A A IA1 15 IA1 17 IA1 16 2I 6 IA1 2 2N 2 1 2 L L L L L Y L Y 15A WASHER L W L L B L R L W L B L R L A JUNCTION CONNECTOR J 7 JUNCTION CONNECTOR J17 JUNCTION CONNECTOR J 1 A A JUNCTION CONNECTOR J18 W B W B ...

Page 122: ... the washer motor to emit a water spray At the same time the current flows from the WIP fuse to wiper and washer SW TERMINAL 17 to TERMINAL 7 to front wiper motor TERMINAL 5 to TERMINAL 4 to GROUND and operates the front wiper motor C12 FRONT WIPER AND WASHER SW 2 GROUND Always continuity 7 GROUND Approx 12 volts with the front wiper and washer SW at LO position Approx 2 to 12 seconds intermittent...

Page 123: ...2003 PRIUS EWD493U 122 CIGARETTE LIGHTER 15A CIG FROM POWER SOURCE SYSTEM SEE PAGE 50 2D 5 1 2 A A 2K 8 2D 8 ID A GR W B W B W B CIGARETTE LIGHTER C 8 JUNCTION CONNECTOR J24 JUNCTION CONNECTOR J11 ...

Page 124: ...e See Page Code See Page C8 36 J11 37 J24 37 JUNCTION BLOCK AND WIRE HARNESS CONNECTOR Code See Page Junction Block and Wire Harness Connector Location 2D 30 Instrument Panel Wire and Instrument Panel J B Cowl Side Panel LH 2K 31 Cowl Wire and Instrument Panel J B Cowl Side Panel LH GROUND POINTS Code See Page Ground Points Location ID 42 Cowl Side Panel LH SERVICE HINTS ...

Page 125: ...2003 PRIUS EWD493U 124 HORN 10A HORN FROM POWER SOURCE SYSTEM SEE PAGE 50 2 3 1 5 1J 2 1F 9 1 IA2 8 D D 6 HORN RELAY B R B W B R B R HORN SW COMB SW C14 JUNCTION CONNECTOR J20 HORN H 4 ...

Page 126: ...Page Junction Block and Wire Harness Connector Location 1F 27 Engine Room Main Wire and Engine Room J B Engine Compartment Left 1J 27 Engine Room Main Wire and Engine Room J B Engine Compartment Left CONNECTOR JOINING WIRE HARNESS AND WIRE HARNESS Code See Page Joining Wire Harness and Wire Harness Connector Location IA2 42 Engine Room Main Wire and Cowl Wire Cowl Side Panel LH SERVICE HINTS ...

Page 127: ... W R W R W POWER WINDOW MOTOR FRONT LH P10 POWER WINDOW MASTER SW P 9 DIODE DOOR COURTESY D 4 DOOR COURTESY SW FRONT RH D 7 DOOR COURTESY SW FRONT LH D 6 JUNCTION CONNECTOR B J14 A J15 JUNCTION CONNECTOR B J12 A J13 CPUB LMT SGND DDN DU DCTY DCTY PLS B IG WLSW A B B C JUNCTION CONNECTOR B J24 A J25 L Y C C JUNCTION CONNECTOR J20 2 1 A 6 Y Y 18 MPX1 RX POWER RELAY IC1 1 9 W B E W B A A R W R W JUNC...

Page 128: ... L W W B W L W L O G R G R L O L W B W W L W G B R W W B L W L W L W W B W B Y G W B Y G W B Y G POWER WINDOW CONTROL SW FRONT RH P 6 POWER WINDOW CONTROL SW REAR RH P 8 POWER WINDOW CONTROL SW REAR LH P 7 POWER WINDOW MOTOR FRONT RH P11 POWER WINDOW MOTOR REAR RH P13 POWER WINDOW MOTOR REAR LH P12 JUNCTION CONNECTOR J17 FLU FLD RRU RRD RLU RLD IB1 7 W B BODY ECU B B 8 B 9 A A 3 A 2 E B 1 2D 8 2K ...

Page 129: ...ring the window on the driver s side is lowering automatically the motor s operation stops 4 KEY OFF POWER WINDOW OPERATION After the Ignition SW is turned off the windows can be operated for about 43 seconds However the window operation stops when either front doors opens 5 JAM PROTECTION FUNCTION DRIVER S WINDOW When any foreign object gets caught during power window UP operation the motor rotat...

Page 130: ... Left Kick Panel IG1 42 Front Door LH Wire and Instrument Panel Wire Left Kick Panel IN1 44 Front Door RH Wire and Instrument Panel Wire Right Kick Panel IQ1 44 Front Door RH Wire and Cowl Wire Right Kick Panel BA1 46 Rear Door No 2 Wire and Floor Wire Center Pillar LH BB1 46 Rear Door No 1 Wire and Cowl Wire Center Pillar RH GROUND POINTS Code See Page Ground Points Location IG 42 Cowl Side Panel...

Page 131: ...ACC FROM POWER SOURCE SYSTEM SEE PAGE 50 2D 2 ID B A A A 2D 8 2K 8 M M M M A A A A 3 5 1 3 5 1 C C L BR R GR R GR R W B W B W B BR R BR R R G W BR R LG L LG R G JUNCTION CONNECTOR J27 IN1 10 IG1 10 IG1 9 IG1 8 IN1 9 IN1 8 L LG BR R W R G BR R JUNCTION CONNECTOR J26 JUNCTION CONNECTOR J11 REMOTE CONTROL MIRROR LH R10 REMOTE CONTROL MIRROR RH R11 JUNCTION CONNECTOR B J24 J25 A W ...

Page 132: ...CK AND WIRE HARNESS CONNECTOR Code See Page Junction Block and Wire Harness Connector Location 2D 30 Instrument Panel Wire and Instrument Panel J B Cowl Side Panel LH 2K 31 Cowl Wire and Instrument Panel J B Cowl Side Panel LH CONNECTOR JOINING WIRE HARNESS AND WIRE HARNESS Code See Page Joining Wire Harness and Wire Harness Connector Location IG1 42 Front Door LH Wire and Instrument Panel Wire Le...

Page 133: ...GHT SW S 3 KEY INTERLOCK SOLENOID UNLOCK WARNING SW U 1 JUNCTION CONNECTOR J21 JUNCTION CONNECTOR J11 6 1 3 5 R B G W G W G W GR R B Y B Y GR R GR R B Y B Y L W B W B W B W B W B W B SHIFT LOCK ECU S 2 STP ACC IG W B KLS E JUNCTION CONNECTOR B J14 J15 A JUNCTION CONNECTOR B J27 J28 A JUNCTION CONNECTOR J14 A JUNCTION CONNECTOR B J22 J23 A JUNCTION CONNECTOR B J24 J25 A SHIFT LOCK CONTROL SW SHIFT ...

Page 134: ...he key interlock solenoid to turn off Lock lever disengages from LOCK position and the ignition key can be turned from ACC to LOCK position S2 SHIFT LOCK ECU 1 GROUND Approx 12 volts with the ignition SW at ACC or ON position 3 GROUND Approx 12 volts with the ignition SW at ON position 5 GROUND Always continuity 6 GROUND Approx 12 volts with the brake pedal depressed S3 STOP LIGHT SW 2 1 Closed wi...

Page 135: ... 9 12 BODY ECU B B 8 B 9 A UNLOCK WARNING SW U 1 JUNCTION CONNECTOR J27 JUNCTION CONNECTOR J27 JUNCTION CONNECTOR J11 JUNCTION CONNECTOR B J24 J25 A DOOR COURTESY SW REAR LH D 8 DOOR COURTESY SW REAR RH D 9 10A GAUGE 15 A 5 IF1 2 1 2 BJ LUG J33 JUNCTION CONNECTOR B B W B W B L B L B L 4 LUGGAGE COMPARTMENT DOOR UNLOCK SW 15A DOME 1J 7 2G 2 2D 4 A B B C IG1 1 L Y JUNCTION CONNECTOR B J24 J25 A L Y ...

Page 136: ...WD R W W B G R W R W R W Y Y R Y R Y R W R W R W R W L B G Y W R G G R W B W B R W BODY ECU B B 8 B 9 A 2 JUNCTION CONNECTOR B J12 J13 A POWER WINDOW MASTER SW P 9 JUNCTION CONNECTOR J16 DIODE DOOR COURTESY D 4 DOOR COURTESY SW FRONT LH D 6 DOOR COURTESY SW FRONT RH D 7 DOOR LOCK MOTOR DOOR KEY LOCK AND UNLOCK SW AND DOOR UNLOCK DETECTION SW FRONT LH D13 MPX1 L Y 5 L Y CPUB DCTY ...

Page 137: ... B W B W B W L W L R G W L R G R G W G L B W B W B W B W B W L W L W L R G W L W L R G R G R G G W G L B 9 16 JUNCTION CONNECTOR B J14 J15 A JUNCTION CONNECTOR B J22 A J23 BI BA1 1 3 W B W B JUNCTION CONNECTOR B J18 J19 A JUNCTION CONNECTOR J17 DOOR LOCK MOTOR DOOR KEY LOCK AND UNLOCK SW AND DOOR UNLOCK DETECTION SW FRONT RH D14 DOOR LOCK MOTOR AND DOOR UNLOCK DETECTION SW REAR RH D12 DOOR LOCK MO...

Page 138: ...2003 PRIUS EWD493U 137 B 14 B 15 IN1 1 IN1 6 IQ1 2 6 5 3 L1 UL1 W B R B G B W B G B R B BODY ECU B B 8 B 9 A UNLOCK LOCK D10 DOOR LOCK CONTROL SW FRONT RH ...

Page 139: ...river s side door is locked using the ignition key all the doors are locked Unlock operation from the driver s side door When the driver s side door is unlocked once using the ignition key only the driver s side door is unlocked If this operation is repeated within 3 seconds all the other doors are unlocked Lock operation from the front passenger s side door When the front passenger s side door is...

Page 140: ...IRE HARNESS Code See Page Joining Wire Harness and Wire Harness Connector Location IB1 42 Floor Wire and Cowl Wire Cowl Side Panel LH IC1 42 Front Door LH Wire and Cowl Wire Left Kick Panel ID2 42 Instrument Panel Wire and Cowl Wire Left Kick Panel IF1 42 Instrument Panel Wire and Floor Wire Left Kick Panel IG1 42 Front Door LH Wire and Instrument Panel Wire Left Kick Panel IN1 44 Front Door RH Wi...

Page 141: ...ODY ECU B B 8 B 9 A B PRG RDA UNLOCK WARNING SW U 1 JUNCTION CONNECTOR J27 WIRELESS DOOR CONTROL RECEIVER W 5 JUNCTION CONNECTOR J27 JUNCTION CONNECTOR J11 JUNCTION CONNECTOR B J24 J25 A DOOR COURTESY SW REAR LH D 8 DOOR COURTESY SW REAR RH D 9 10A GAUGE 15 A 5 LUG L B IF1 2 1 2 L 4 LUGGAGE COMPARTMENT DOOR UNLOCK SW J33 JUNCTION CONNECTOR B B L B W B W B BJ 15A DOME 1J 7 2G 2 2D 4 A B B C IG1 1 L...

Page 142: ...WD R W W B G R W R W R W Y Y R Y R Y R W R W R W R W L B G Y W R G G R W B W B R W BODY ECU B B 8 B 9 A 2 JUNCTION CONNECTOR B J12 J13 A POWER WINDOW MASTER SW P 9 DIODE DOOR COURTESY D 4 DOOR COURTESY SW FRONT LH D 6 DOOR COURTESY SW FRONT RH D 7 DOOR LOCK MOTOR DOOR KEY LOCK AND UNLOCK SW AND DOOR UNLOCK DETECTION SW FRONT LH D13 MPX1 J16 JUNCTION CONNECTOR 5 CPUB L Y L Y DCTY ...

Page 143: ...SR W B W B W B W L W L R G W L R G R G W G L B W B W B W B W B W L W L W L R G W L W L R G R G R G G W G L B 9 16 JUNCTION CONNECTOR B J14 J15 A JUNCTION CONNECTOR B J22 A J23 BI BA1 1 3 W B W B JUNCTION CONNECTOR B J18 J19 A JUNCTION CONNECTOR J17 DOOR LOCK MOTOR DOOR KEY LOCK AND UNLOCK SW AND DOOR UNLOCK DETECTION SW FRONT RH D14 DOOR LOCK MOTOR AND DOOR UNLOCK DETECTION SW REAR RH D12 DOOR LOC...

Page 144: ...2003 PRIUS EWD493U 143 B 14 B 15 IN1 1 IN1 6 IQ1 2 6 5 3 L1 UL1 W B R B G B W B G B R B BODY ECU B B 8 B 9 A UNLOCK LOCK D10 DOOR LOCK CONTROL SW FRONT RH ...

Page 145: ...while all the doors are locked doors are unlocked and the room lights are turned on simultaneously 4 WIRELESS CONTROL STOP FUNCTION If the following situations occur wireless door lock function does not operate When each of the doors opens Door courtesy SW is on When ignition key is inserted to ignition SW Unlock warning SW is on When ignition SW is on 5 REPEAT FUNCTION If the doors are not locked...

Page 146: ...IRE HARNESS Code See Page Joining Wire Harness and Wire Harness Connector Location IB1 42 Floor Wire and Cowl Wire Cowl Side Panel LH IC1 42 Front Door LH Wire and Cowl Wire Left Kick Panel ID2 42 Instrument Panel Wire and Cowl Wire Left Kick Panel IF1 42 Instrument Panel Wire and Floor Wire Left Kick Panel IG1 42 Front Door LH Wire and Instrument Panel Wire Left Kick Panel IN1 44 Front Door RH Wi...

Page 147: ...12 BODY ECU B B 8 B 9 A UNLOCK WARNING SW U 1 JUNCTION CONNECTOR J27 JUNCTION CONNECTOR J27 JUNCTION CONNECTOR J11 JUNCTION CONNECTOR B J24 J25 A DOOR COURTESY SW REAR LH D 8 DOOR COURTESY SW REAR RH D 9 10A GAUGE 15 A 5 IF1 2 1 2 BJ LUG J33 JUNCTION CONNECTOR B B W B W B L B L B L 4 LUGGAGE COMPARTMENT DOOR KEY UNLOCK SW 15A DOME 1J 7 A B B C 2G 2 2D 4 IG1 1 L Y L Y L Y L Y L Y JUNCTION CONNECTOR...

Page 148: ...W R W L B G Y W R G G R W B W B R W BODY ECU B B 8 B 9 A 2 JUNCTION CONNECTOR B J12 J13 A POWER WINDOW MASTER SW P 9 JUNCTION CONNECTOR J16 DIODE DOOR COURTESY D 4 DOOR COURTESY SW FRONT LH D 6 DOOR COURTESY SW FRONT RH D 7 DOOR LOCK MOTOR DOOR KEY LOCK AND UNLOCK SW AND DOOR UNLOCK DETECTION SW FRONT LH D13 MPX1 CPUB 5 L Y DCTY 7 5A OBDI I FROM POWER SOURCE SYSTEM SEE PAGE 50 2D 9 A 11 D D W L W ...

Page 149: ...B W B W B W L W L R G W L R G R G W G L B W B W B W B W B W L W L W L R G W L W L R G R G R G G W G L B 9 16 JUNCTION CONNECTOR B J14 J15 A JUNCTION CONNECTOR B J22 A J23 BI BA1 1 3 W B W B JUNCTION CONNECTOR B J18 J19 A JUNCTION CONNECTOR J17 DOOR LOCK MOTOR DOOR KEY LOCK AND UNLOCK SW AND DOOR UNLOCK DETECTION SW FRONT RH D14 DOOR LOCK MOTOR AND DOOR UNLOCK DETECTION SW REAR RH D12 DOOR LOCK MOT...

Page 150: ... SEE PAGE 50 2 3 1 5 1J 2 A 10 ID2 4 IA2 8 A 20 A 13 B 13 IE1 9 IE1 10 1 2 1 IE IF B 7 C 8 4 A A D D A A A 6 SH HCTY IND HR B W B W R W LG B R W LG B B R B R B R B R B R BR W B W B BR THEFT DETERRENT HORN T 1 ENGINE HOOD COURTESY SW E 2 CENTER CLUSTER SW C 7 JUNCTION CONNECTOR J27 JUNCTION CONNECTOR J20 HORN RELAY JUNCTION CONNECTOR J 7 JUNCTION CONNECTOR J 1 RADIO AND PLAYER C R 3 R 4 B ...

Page 151: ...s approx 12 volts 8 GROUND Always approx 12 volts 15 GROUND Approx 12 volts with the ignition SW at ON position 6 GROUND Continuity with rear LH RH door open 3 GROUND Continuity with front LH door open PARTS LOCATION Code See Page Code See Page Code See Page B8 A 36 E2 34 J22 A 37 B9 B 36 J1 37 J23 B 37 C7 36 J7 37 J24 A 37 D4 36 J11 37 J25 B 37 D6 38 J12 A 37 J26 37 D7 38 J13 B 37 J27 37 D8 38 J1...

Page 152: ...Room Main Wire Left Kick Panel IF1 42 Instrument Panel Wire and Floor Wire Left Kick Panel IG1 42 Front Door LH Wire and Instrument Panel Wire Left Kick Panel IN1 44 Front Door RH Wire and Instrument Panel Wire Right Kick Panel IQ1 44 Front Door RH Wire and Cowl Wire Right Kick Panel BA1 46 Rear Door No 2 Wire and Floor Wire Center Pillar LH BB1 46 Rear Door No 1 Wire and Cowl Wire Center Pillar R...

Page 153: ...GATION ECU N 2 FRONT DOOR SPEAKER LH F14 FRONT DOOR SPEAKER RH F15 REAR SPEAKER LH R 8 REAR SPEAKER RH R 9 2G 2 2D 4 L Y 2 1 IG1 3 IG1 4 AUO AUO G R P V FRONT DOOR SPEAKER LH F14 IJ2 6 IJ2 7 G R 2 11 1 1 1 1 1 1 1 1 1 1 2 2 2 2 B C A C A C IJ1 1 IJ1 4 JUNCTION CONNECTOR J24 JUNCTION CONNECTOR B J27 A J28 B B B B ACC L Y L Y GR R GR R 9 18 B B GR R JUNCTION CONNECTOR J26 17 BR GND RADIO AND PLAYER ...

Page 154: ... 3 10 8 7 4 C F C F F C MULTI DISPLAY M 5 CENTER CLUSTER SW C 7 JUNCTION CONNECTOR J26 IJ1 21 BR BR BR 1 W NAVIGATION SYSTEM 2 W O NAVIGATION SYSTEM RADIO AND PLAYER B R 2 R 3 A C R 4 G R 12 C GR GR ACC 1 11 C P B P B EJCT 9 5 C L R L R B 2 GND TX TX GND ACC B EJECT BU B TX TX ...

Page 155: ...or Location 1J 27 Engine Room Main Wire and Engine Room J B Engine Compartment Left 2D 30 Instrument Panel Wire and Instrument Panel J B Cowl Side Panel LH 2G 31 Engine Room Main Wire and Instrument Panel J B Cowl Side Panel LH CONNECTOR JOINING WIRE HARNESS AND WIRE HARNESS Code See Page Joining Wire Harness and Wire Harness Connector Location IF1 42 Instrument Panel Wire and Floor Wire Left Kick...

Page 156: ...2003 PRIUS EWD493U 155 MEMO ...

Page 157: ...ULTI DISPLAY C M 7 C 1 C 4 B 5 B 10 B C IJ1 4 IJ1 1 GR R GR R L Y B B JUNCTION CONNECTOR J26 IJ1 6 IJ1 7 IJ1 22 6 B IJ1 16 2 B R B 2 W R G W SHIELDED SHIELDED SHIELDED SHIELDED 5A ECU IG 2I 2 ID1 5 C 2 P B 14 A P B D D E D D E JUNCTION CONNECTOR J14 JUNCTION CONNECTOR J21 JUNCTION CONNECTOR J26 B Y B Y B Y B Y 11 A A 4 12 5 G R GATEWAY ECU G 1 A 13 ID1 7 B E A E 1 R Y R Y R Y PARKING BRAKE SW P 2 ...

Page 158: ... A 5 IJ1 3 A 5 2B 7 2A 6 A 13 B 1 10A GAUGE FROM POWER SOURCE SYSTEM SEE PAGE 50 2C 3 2 5 1 3 IJ1 5 A 14 REV R G Y V W V W V W V W L W G R L R B R B R B BR BR COMBINATION METER B C10 C11 A 10 9 BACK UP LIGHT RELAY B 5 RADIO AND PLAYER R 4 C 6 A 3 A 10 SHIELDED SHIELDED SPD R L IJ1 21 BR 15 IJ1 8 B SYNC B 8 B B A 14 IH 2A 7 2B 6 L BR TX TX GND1 G SYNC B VR SPD TX TX TX TX A G A G A G J27 JUNCTION C...

Page 159: ...Harness Connector Location 1J 27 Engine Room Main Wire and Engine Room J B Engine Compartment Left 2A 2B 30 Instrument Panel Wire and Instrument Panel J B Cowl Side Panel LH 2C 30 Instrument Panel Wire and Instrument Panel J B Cowl Side Panel LH 2D 2G 31 Engine Room Main Wire and Instrument Panel J B Cowl Side Panel LH 2I 31 Cowl Wire and Instrument Panel J B Cowl Side Panel LH CONNECTOR JOINING W...

Page 160: ...2003 PRIUS EWD493U 159 MEMO ...

Page 161: ...2 MPX MPX MP2 MPD1 CG GND GTX GTX GR GR B GR GR L W B GR B W B W B W B W B W B R G GR R R G R G GR R B Y B Y B Y B Y JUNCTION CONNECTOR B J27 J28 A JUNCTION CONNECTOR J14 JUNCTION CONNECTOR J21 GATEWAY ECU G 1 ENGINE CONTROL MODULE E10 BODY ECU B 8 COMBINATION METER C11 ACC BATT IG MPD2 MPX1 MPX MPX MPX A C AMPLIFIER A 7 JUNCTION CONNECTOR J21 JUNCTION CONNECTOR J24 JUNCTION CONNECTOR J11 MULTI DI...

Page 162: ...HARNESS CONNECTOR Code See Page Junction Block and Wire Harness Connector Location 2C 30 Instrument Panel Wire and Instrument Panel J B Cowl Side Panel LH 2D 30 Instrument Panel Wire and Instrument Panel J B Cowl Side Panel LH 2I 31 Cowl Wire and Instrument Panel J B Cowl Side Panel LH 2K 31 Cowl Wire and Instrument Panel J B Cowl Side Panel LH CONNECTOR JOINING WIRE HARNESS AND WIRE HARNESS Code ...

Page 163: ...ROM POWER SOURCE SYSTEM SEE PAGE 50 2C 4 IJ1 12 2 1 1 3 IJ1 11 B D A E ID 2D 8 2K 8 A A A B Y B Y G W B W B W B W B W B TENSION REDUCER SOLENOID T 6 TENSION REDUCER LH BUCKLE SW LH B20 JUNCTION CONNECTOR J24 JUNCTION CONNECTOR J11 JUNCTION CONNECTOR B J22 J23 A ...

Page 164: ...e Junction Block and Wire Harness Connector Location 2C 30 Instrument Panel Wire and Instrument Panel J B Cowl Side Panel LH 2D 30 Instrument Panel Wire and Instrument Panel J B Cowl Side Panel LH 2K 31 Cowl Wire and Instrument Panel J B Cowl Side Panel LH CONNECTOR JOINING WIRE HARNESS AND WIRE HARNESS Code See Page Joining Wire Harness and Wire Harness Connector Location IJ1 44 Floor No 3 Wire a...

Page 165: ... 1 B 2 7 13 14 22 M2 M1 WL PIG RLY GR G P B W W P B GR G B Y B Y R G B R B GR GR B Y L B GR Y B Y B Y B R R G A E E A EMPS RELAY JUNCTION CONNECTOR J22 JUNCTION CONNECTOR J26 JUNCTION CONNECTOR B J14 J15 A DATA LINK CONNECTOR 3 D 2 IG TS TC SIL COMBINATION METER C10 DC MOTOR D 1 C EMPS ECU B E 3 E 4 A E 5 D E 6 10A GAUGE 2A 5 L 11 L 1 2 2A 7 2B 6 IH 14 L BR BR 1 2 M ...

Page 166: ...3 15 WRL WRR TRQG TRQ2 TRQ1 TRQV PGND GR G P B W GR G P B W W B W B W B B G R W B W GR G P B W L W B EMPS ECU B E 3 E 4 A C E 5 D E 6 TS TC SIL W B JUNCTION CONNECTOR J17 STEERING SHAFT TORQUE SENSOR S 1 BRAKE ECU B11 JUNCTION CONNECTOR B J18 J19 A VCC VT1 VT2 GND RRO RLO SHIELDED SHIELDED JUNCTION CONNECTOR J16 SHIELDED E C B ...

Page 167: ...Code See Page Junction Block and Wire Harness Connector Location 2A 30 Instrument Panel Wire and Instrument Panel J B Cowl Side Panel LH 2B 30 Instrument Panel Wire and Instrument Panel J B Cowl Side Panel LH 2G 31 Engine Room Main Wire and Instrument Panel J B Cowl Side Panel LH 2I 31 Cowl Wire and Instrument Panel J B Cowl Side Panel LH CONNECTOR JOINING WIRE HARNESS AND WIRE HARNESS Code See Pa...

Page 168: ...are likely to be applied to the sensor during repairs Do not expose the steering wheel pad front passenger airbag assembly side airbag assembly seat belt pretensioner airbag sensor assembly or side airbag sensor directly to hot air or flames Even in cases of a minor collision where the SRS does not deploy the steering wheel pad front passenger airbag assembly side airbag assembly seat belt pretens...

Page 169: ...ASSEMBLY A20 AIRBAG SQUIB STEERING WHEEL PAD A21 IGNITION SW I15 SIDE AIRBAG SENSOR RH S 5 SIDE AIRBAG SENSOR LH S 4 HYBRID VEHICLE CONTROL ECU H13 FUSIBLE LINK BLOCK NO 1 D F12 F13 C AIRBAG SENSOR ASSEMBLY B A17 A18 A C A19 ABFS B G B W R W R B W B O GR L P L L W LG B GR L P L Y LG GR Y B Y Y R Y G Y R Y G Y G Y R BATTERY D D P P SFL SFR SFL SFR IG2 ACC GSW2 VUPL SSL SSL ESL VUPR SSR SSR ESR GR 2...

Page 170: ... E A 11 2K 8 ID A BUCKLE SW LH B20 G O W B W B LBE A A JUNCTION CONNECTOR J29 JUNCTION CONNECTOR B J22 A J23 JUNCTION CONNECTOR J11 G O IJ1 11 W B IL1 2 IL1 1 A C B C GR R B A 14 A 16 B 5 B GR R L JUNCTION CONNECTOR B J27 A J28 SRS WARNING LIGHT COMB METER B C10 C11 A JUNCTION CONNECTOR J26 2D 8 L A A B C JUNCTION CONNECTOR B J22 A J23 1 2 2E 3 B 28 W B E2 C 8 RBE G O 1 W SIDE AIRBAGS IJ1 9 B A A ...

Page 171: ...the shock to the driver The airbag stored inside the passenger s instrument panel is instantaneously expanded to soften the shock to the front passenger Side airbags are instantaneously expanded to soften the shock of side to the driver and front passenger w side airbags The pretensioners make sure of the seat belt restrainability PARTS LOCATION Code See Page Code See Page Code See Page A17 A 36 F...

Page 172: ...2003 PRIUS EWD493U 171 MEMO ...

Page 173: ...URCE SYSTEM SEE PAGE 50 3 2 2 2 2 2 4 1 3 2 4 1 3 2 2 2 2 3 6 1 4 3 3 3 3 IA2 14 B G B W R W R B W W L B W R R LG R G Y G G W B W R L O Y B B L LG R Y G G G W HYDRO MTR NO 1 RELAY HYDRO MTR NO 2 RELAY ABS SOL RELAY BATTERY FUSIBLE LINK BLOCK NO 2 F18 FUSIBLE LINK BLOCK NO 1 D F12 F13 C 1 120A MAIN IGNITION SW I15 Y B L O Y B 6 4 1 1 2 2 ...

Page 174: ...D 8 A 31 6 A IE SR MR1 MR2 GND1 GND2 MTT MT MT PH PL R1 R2 IG2 SFRH SFLH SFLR SRRH SRRR SMC1 SMC2 SS AST SLA SLA R R B Y B R G R Y R L G W G B G O B O L LG W L Y G Y GR Y R W B W B W B W B W B W B W B W B W B B W B W R L O Y B B L LG R Y G G G W W B W B A A A A A A BRAKE ACTUATOR B B 1 B 2 A BRAKE ECU B B10 B11 A HYDRAULIC BOOSTER B H 5 H 6 A JUNCTION CONNECTOR J 7 JUNCTION CONNECTOR J 1 B 3 C C 5...

Page 175: ...L W B W B W B A SG3 EFR PFR VFR SG2 EREG PREG VREG SLR SLR LBL GND3 GND4 FL FL FR RL RL A 24 IB1 2 IB1 1 IB1 5 BRAKE ACTUATOR B B 1 B 2 A BRAKE ECU B B10 B11 A ABS SPEED SENSOR FRONT LH A 4 ABS SPEED SENSOR FRONT RH A 5 ABS SPEED SENSOR REAR LH A23 JUNCTION CONNECTOR J11 BRAKE FLUID LEVEL WARNING SW B 4 C B 3 A 12 A 9 A 5 10 A A 22 A 1 23 A SHIELDED B W R SHIELDED SG1 E2 PMC VCM C B12 D B13 FSS FR...

Page 176: ... REAR RH A24 HYBRID VEHICLE CONTROL ECU H14 EMPS ECU E 6 JUNCTION CONNECTOR J12 PARKING BRAKE SW P 2 I 3 BR B SHIELDED BRAKE ACTUATOR B B 1 B 2 A C B 3 BRAKE ECU B B10 B11 A C B12 D B13 B A A A IG A JUNCTION CONNECTOR J17 SHIELDED W B JUNCTION CONNECTOR B J18 J19 A W B J11 JUNCTION CONNECTOR A ID A A A J10 JUNCTION CONNECTOR SHIELDED W B W B 1 2 B 6 IG1 5A ECU IG 2I 2 B Y B E B E A D C 20 BZ G B Y...

Page 177: ...3 4 4 13 E A E A DATA LINK CONNECTOR 3 D 2 JUNCTION CONNECTOR J16 COMBINATION METER B C10 C11 A BRAKE ECU B B10 B11 A C B12 D B13 TC D G TS WA SP1 ENGINE CONTROL MODULE E10 A C AMPLIFIER A 7 GATEWAY ECU G 1 MP2 MPD1 MPX MPD2 MPX MPX1 MPX2 MPX GR L TC SIL TS 2K 2 B 5 R Y BRL R Y 4 PKB 15A STOP 2K 9 R B 1 2 B 1 STP STOP LIGHT SW S 3 G W G W JUNCTION CONNECTOR J26 JUNCTION CONNECTOR J22 C E B BODY EC...

Page 178: ...hydraulic pressure is also controlled by the brake ECU by the same method as above Pressure reduction holding and increase are repeated to maintain vehicle stability and to improve steerability during sudden braking A4 A5 ABS SPEED SENSOR FRONT LH RH 2 1 1 4 1 8 kΩ 20 C 68 F A23 A24 ABS SPEED SENSOR REAR LH RH 2 1 1 04 1 3 kΩ 20 C 68 F B10 A B11 B B12 C B13 D BRAKE ECU B 6 C 1 GROUND Approx 12 vol...

Page 179: ...el LH CONNECTOR JOINING WIRE HARNESS AND WIRE HARNESS Code See Page Joining Wire Harness and Wire Harness Connector Location IA2 42 Engine Room Main Wire and Cowl Wire Cowl Side Panel LH IB1 42 Floor Wire and Cowl Wire Cowl Side Panel LH ID1 42 Instrument Panel Wire and Cowl Wire Left Kick Panel IP1 44 Instrument Panel Wire and Cowl Wire Right Kick Panel GROUND POINTS Code See Page Ground Points L...

Page 180: ...2003 PRIUS EWD493U 179 MEMO ...

Page 181: ...ER SOURCE SYSTEM SEE PAGE 50 10A GAUGE 3 2 5 1 2M 4 A 15 3 2 11 REAR WINDOW DEFOGGER NOISE FILTER REAR WINDOW DEFOGGER N 4 1 B GR GR B MPX MPX MPX COMBINATION METER C11 MPX BODY ECU B 8 A DEF RELAY 13 PSG SW RDEF REAR WINDOW DEFOGGER SW A C AMPLIFIER A 7 DFG 2 1 ...

Page 182: ...ndow defogger SW on PARTS LOCATION Code See Page Code See Page Code See Page A7 36 C11 36 B8 A 36 N4 39 JUNCTION BLOCK AND WIRE HARNESS CONNECTOR Code See Page Junction Block and Wire Harness Connector Location 2M 31 Floor Wire and Instrument Panel J B Cowl Side Panel LH SERVICE HINTS ...

Page 183: ... 2A 7 IH 14 4 8 3 5 1 5 1 6 13 GR L L L W G LG R W L L L L L BR GR GR L GR B BR R Y B Y L W L Y L L R G L Y L L R G R G MPX MPX FU FU MPX1 MPX2 B FUA COMBINATION METER B C10 C11 A BODY ECU B B 8 B 9 A FUEL SENDER F16 ENGINE CONTROL MODULE E10 ODO TRIP SW HAZARD WARNING SW H 8 FROM BACK UP LIGHT RELAY FROM BRAKE ECU TO LIGHT CONTROL RHEOSTAT FROM EMPS ECU Y Y B BR R L Y L R FUEL SENDER SENSOR 20 11...

Page 184: ... V W MPX MPD1 MPD2 MP2 C11 A C10 B COMBINATION METER A C AMPLIFIER A 7 GATEWAY ECU G 1 JUNCTION CONNECTOR B J27 J28 A FROM HYBRID VEHICLE CONTROL ECU FROM ENGINE CONTROL MODULE FROM NAVIGATION ECU CHARGE OIL SEAT BELT FRONT PASSENGER S SEAT SEAT BELT DRIVER S SEAT BRAKE HEAD DOOR G A FROM MULTI DISPLAY V W ...

Page 185: ...4 L L L GR R B Y L G R COMBINATION METER B C10 C11 A FROM HEADLIGHTS 1 FROM DAYTIME RUNNING LIGHT RELAY 2 FROM TURN SIGNAL FLASHER RELAY TO ENGINE CONTROL MODULE TO BRAKE ECU TO AIRBAG SENSOR ASSEMBLY 10A ACC FROM POWER SOURCE SYSTEM SEE PAGE 50 2D 2 GR R A C B C B B JUNCTION CONNECTOR J26 JUNCTION CONNECTOR B J27 J28 A GR R GR R 1 W O DAYTIME RUNNING LIGHT 2 W DAYTIME RUNNING LIGHT ...

Page 186: ...n Block and Wire Harness Connector Location 1J 27 Engine Room Main Wire and Engine Room J B Engine Compartment Left 2A 2B 30 Instrument Panel Wire and Instrument Panel J B Cowl Side Panel LH 2C 30 Instrument Panel Wire and Instrument Panel J B Cowl Side Panel LH 2D 2G 31 Engine Room Main Wire and Instrument Panel J B Cowl Side Panel LH 2J 31 Cowl Wire and Instrument Panel J B Cowl Side Panel LH CO...

Page 187: ...11 1J 4 5A ECU IG 2G 7 FAN NO 1 RELAY FAN NO 2 RELAY FAN NO 3 RELAY L W W B L W W G G W V Y B Y B Y W B V Y RADIATOR FAN MOTOR R 1 A C CONDENSER FAN MOTOR A 1 W B W B V Y V Y W B W B A A A A A C SINGLE PRESSURE SW A 3 JUNCTION CONNECTOR J 7 WATER TEMP SW W 4 JUNCTION CONNECTOR J 1 JUNCTION CONNECTOR B J27 J28 A 1A 11 ENGINE CONTROL MODULE E 7 4 LG W B A 1J 10 IE1 6 R W R W 1 A C AMPLIFIER A 8 2 1 ...

Page 188: ... 5 kgf cm2 178 psi PARTS LOCATION Code See Page Code See Page Code See Page A1 34 J1 37 R1 35 A3 34 J7 37 W4 35 A8 36 J27 A 37 E7 36 J28 B 37 JUNCTION BLOCK AND WIRE HARNESS CONNECTOR Code See Page Junction Block and Wire Harness Connector Location 1A 27 Engine Wire and Engine Room J B Engine Compartment Left 1J 27 Engine Room Main Wire and Engine Room J B Engine Compartment Left 1K 27 Engine Room...

Page 189: ... W B L R W B V R B L LG R L O R R B R L O B L LG R R W B B W B R V B R L Y L Y W B W B W B W B 1 2 3 A A A A A A 4 BLOWER MOTOR LINEAR CONTROLLER B 7 JUNCTION CONNECTOR J 7 BLOWER MOTOR B 6 WATER PUMP MOTOR A C W 2 JUNCTION CONNECTOR J 1 A C DUAL PRESSURE SW A 3 JUNCTION CONNECTOR B J 2 A J 3 2 HTR RELAY CLR MG RELAY W B LG R R A C W P RELAY 1 GND SI B VM M M A A B JUNCTION CONNECTOR J 6 A B B 2 1...

Page 190: ... L BR W W L BR W B L V Y W B W B L Y L R V V A 2 4 1 C A C MAGNETIC CLUTCH AND LOCK SENSOR A 2 JUNCTION CONNECTOR J 6 A C ROOM TEMP SENSOR A10 A C THERMISTOR A12 WATER TEMP SW W 4 JUNCTION CONNECTOR B J27 A J28 JUNCTION CONNECTOR B J24 A J25 JUNCTION CONNECTOR B J22 A J23 FROM FAN NO 2 RELAY A C AMPLIFIER B A 7 A 8 A A 9 C BLW PSW WP LOCK SGLOCK CF GND MGC IG B RF TR SGTR TE SGTE IE1 11 V Y W B A ...

Page 191: ...GR GR B LG P G BR W G W G BR W W W W W W W W GR L W COMBINATION METER C11 GATEWAY ECU G 1 AMBIENT TEMP SENSOR A 6 ENGINE CONTROL MODULE C E 8 B E 9 MPX MPD1 HRLY MPX MPX MEO2 ACT E2 S5TS TS SGTPI S5TPI TPI AIF AIR MPX MPD2 MPX1 MPX2 TAM MPX MP2 NE ACT D E10 A C SOLAR SENSOR A11 AIR INLET CONTROL SERVO MOTOR A14 C A 9 A A 8 A 7 B A C AMPLIFIER BODY ECU B 8 A A 15 A 16 IK1 2 ...

Page 192: ... 11 C 1 2 3 4 5 1 2 3 4 5 W W W W W W W W W W W R BR Y Y R L BR R W BR W GR L R Y B S5TP SGTP TP AMC AMH S5TPM SGTPM TPM AOF AOD BSET TSET MSET PIG5 PSG SW A C SW F R SW RDEF SW FULL A C PIG LED A C LED F R LED RDEF LED FULL A C AIR MIX CONTROL SERVO MOTOR A15 AIR VENT MODE CONTROL SERVO MOTOR A16 C A 9 A A 8 A 7 B A C AMPLIFIER ...

Page 193: ...G 8 10A GAUGE 3 IE1 18 IA1 1 IA1 5 ID C A 9 A A 8 A 7 B A C AMPLIFIER P P B P R L R L P B 3 R L G G W B R W B W B W B W B JUNCTION CONNECTOR J11 A A L R HTR1 RELAY HTR2 RELAY HTR3 RELAY 1 1 2 2 P B IE1 16 IE W B JUNCTION CONNECTOR J 1 A 1 50A HTR3 2 HTRO HTR2 B 1 B 3 B 2 B 4 PTC HEATER B P 3 P 4 A A 1 A 2 W B G R L Y 3 3 3 3 3 3 3 3 3 3 3 3 3 COLD AREA SPEC ...

Page 194: ...or Location 1A 27 Engine Wire and Engine Room J B Engine Compartment Left 1F 1J 27 Engine Room Main Wire and Engine Room J B Engine Compartment Left 1K g g g 2C 30 Instrument Panel Wire and Instrument Panel J B Cowl Side Panel LH 2D 30 Instrument Panel Wire and Instrument Panel J B Cowl Side Panel LH 2F 31 Engine Room Main Wire and Instrument Panel J B Cowl Side Panel LH 2G 31 Engine Room Main Wir...

Page 195: ...2003 PRIUS EWD493U 194 AIR CONDITIONING SPLICE POINTS Code See Page Wire Harness with Splice Points Code See Page Wire Harness with Splice Points E5 40 Engine Room Main Wire ...

Page 196: ...2003 PRIUS EWD493U 195 MEMO ...

Page 197: ...NE CONTROL MODULE 1K 3 E 5 E 5 E 5 E 5 E 5 E 5 E 5 E 5 S E 5 HYDRAULIC BOOSTER E 5 E 5 CUT E 1 E 1 E 1 E 1 E 1 E 1 3 W B W B W B W B W B W B W B W B W B W B W B W B W B W B W B W B W B W B W B W B W B W B W B W B W B W B W B W B W B W B W B W B W B W B W B W B W B W B A A A 1 IE EC W B W B W B W B W B W B A A A A A JUNCTION CONNECTOR J 7 J 1 JUNCTION CONNECTOR W B A BRAKE ECU EA E 3 E 3 E 3 EB ID2...

Page 198: ...MPUTER POWER WINDOW MASTER SW PTC HEATER DAYTIME RUNNING LIGHT RELAY BRAKE ECU 1 W DAYTIME RUNNING LIGHT 2 W NAVIGATION SYSTEM BB1 1 IQ1 1 IG ID B D A E E A D B E A D B IJ1 11 B A A A B A A A A A A B B A A A A A A B A A IG1 2 IJ1 10 IC1 1 IA1 5 IA1 1 A A A A A A A A A A A A A E E W B W B W B W B W B W B W B W B W B W B W B W B W B W B W B W B W B W B W B W B W B W B W B JUNCTION CONNECTOR B J22 J2...

Page 199: ... B B A C B B BJ BK BI W B W B W B W B W B W B W B W B W B W B W B W B W B W B W B W B W B JUNCTION CONNECTOR B J32 J33 A JUNCTION CONNECTOR B J32 J33 A B 1 W B W B HYBRID VEHICLE CONTROL ECU COMBINATION SW COMBINATION SW COMBINATION SW TURN SIGNAL FLASHER RELAY DOOR LOCK CONTROL SW FRONT RH DOOR LOCK MOTOR DOOR KEY LOCK AND UNLOCK SW AND DOOR UNLOCK DETECTION SW FRONT RH B ECC GND1 GND2 A A W B W ...

Page 200: ... Page Joining Wire Harness and Wire Harness Connector Location IA1 42 Engine Room Main Wire and Cowl Wire Cowl Side Panel LH IC1 42 Front Door LH Wire and Cowl Wire Left Kick Panel ID2 42 Instrument Panel Wire and Cowl Wire Left Kick Panel IG1 42 Front Door LH Wire and Instrument Panel Wire Left Kick Panel IJ1 44 Floor No 3 Wire and Instrument Panel Wire Under the Instrument Panel Center IO1 44 En...

Page 201: ...INT SPLICE POINTS Code See Page Wire Harness with Splice Points Code See Page Wire Harness with Splice Points E1 40 Engine Room Main Wire B1 46 Rear Door No 2 Wire E3 40 Engine Wire B3 46 Rear Door No 1 Wire E5 40 Engine Room Main Wire ...

Page 202: ...2003 PRIUS EWD493U 201 MEMO ...

Page 203: ...2003 PRIUS EWD493U 202 J POWER SOURCE Current Flow Chart ...

Page 204: ...2003 PRIUS EWD493U 203 J ...

Page 205: ... See Page 24 Fuse System Page 7 5A DRL Headlight w Daytime Running Light 80 10A ABS NO 4 ABS 172 30A HTR1 Air Conditioning 188 30A HTR2 Air Conditioning 188 40A ABS NO 1 ABS 172 50A EMPS EMPS 164 50A HTR3 Air Conditioning 188 Engine Room J B See Page 26 Fuse System Page 10A BATT FAN TOYOTA Hybrid System 54 10A HEAD LH Headlight w o Daytime Running Light 84 10A HEAD RH Headlight w o Daytime Running...

Page 206: ...A EFI Engine Control 68 15A THRO Engine Control 68 20A ABS NO 3 ABS 172 20A HV TOYOTA Hybrid System 54 30A ABS NO 2 ABS 172 30A CDS FAN Radiator Fan and Condenser Fan 186 30A HEAD Headlight w Daytime Running Light Key Reminder and Light Reminder Buzzer Light Auto Turn Off 80 114 104 30A RDI Radiator Fan and Condenser Fan 186 50A HTR Air Conditioning 188 Instrument Panel J B See Page 30 Fuse System...

Page 207: ...10A ACC Combination Meter Gateway System Navigation System Radio and Player Remote Control Mirror Shift Lock SRS 182 160 156 152 130 132 167 10A GAUGE ABS Air Conditioning Back Up Light Combination Meter Door Lock Control EMPS Engine Control Headlight w Daytime Running Light Key Reminder and Light Reminder Buzzer Light Auto Turn Off Navigation System Power Window Rear Window Defogger Seat Belt War...

Page 208: ...2 68 132 100 15A WASHER Wiper and Washer 120 20A PWR1 Power Window 126 30A DOOR Door Lock Control Theft Deterrent Wireless Door Lock Control 134 146 140 30A POWER Power Window 126 30A WIPER Wiper and Washer 120 40A DEF Rear Window Defogger 180 These are the page numbers of the first page on which the related system is shown ...

Page 209: ...1 2 3 4 5 6 7 8 9 101112 A B 2425 23 26 22 2021 28 27 1 2 3 4 5 6 7 8 9 1011121314151617 1819 A B 1 2 3 4 5 6 7 8 9 101112 A B 1 2 1 2 1 2 1 2 1 2 1 2 3 4 5 6 7 8 9 10 11 12 3 2 1 1 2 3 4 5 6 7 8 9 10 11 12 1 2 3 5 1 2 1 2 1 2 3 4 A1 A2 A3 A4 A5 A6 A7 A8 A9 A10 A11 A12 A13 A14 A15 A16 A17 A18 A19 A20 A21 A22 A23 A24 B1 B2 BLACK GRAY BLACK GRAY GRAY BLACK BLACK BLACK YELLOW YELLOW YELLOW YELLOW YEL...

Page 210: ...8 18 27 1 2 3 4 5 7 8 9 101112 15 1617 19 22 6 1314 2021 18 1 2 1 2 3 4 1 2 3 4 5 6 7 8 9 10 11 12 13 14151617 1819 2021 22 1 3 2 1 3 2 1 2 1 2 2 1 1 2 3 4 1 1 2 1 2 5 3 4 6 7 8 9 10 1 2 5 4 6 7 8 19 18 17 1516 3 2 1 9 1011 202122 14 13 12 10 9 8 7 6 5 4 3 2 1 1 2 3 4 5 6 7 8 9 10 11 12 131415 16 17 18 2 1 1 2 3 4 5 6 7 8 9 10 11 12 3 5 1 2 4 6 5 1 2 3 B8 B9 B10 B11 B12 B13 B14 B15 B16 B17 B18 BLA...

Page 211: ...4 15 16 17 18 19 20 1 2 3 1 2 1 1 1 1 1 2 3 4 5 6 1 2 3 4 1 2 3 4 1 2 3 4 5 6 1 2 3 4 5 6 2 1 1 2 1 2 3 4 5 6 1 2 10 9 8 7 6 5 4 3 2 1 21 17 16 15 14 10 31 27 26 22 13 11 25 23 18 28 19 29 20 30 12 24 1 2 3 4 5 6 7 8 9 2 1 C13 C14 D1 D2 D3 D4 D5 GRAY BLACK BLACK D6 D7 D8 D9 D10 D11 D12 D13 D14 E1 E2 E3 E4 E5 E6 E7 BLACK BLACK BLACK BLACK DARK GRAY GRAY BLACK BLACK ...

Page 212: ...1 2 1 2 1 2 3 4 5 1 2 1 2 7 14 13 6 5 12 11 4 3 10 9 2 1 8 1 2 3 1 2 3 2 1 3 4 1 1 4 5 2 3 6 1 2 3 4 5 1 2 3 4 5 See Page 22 See Page 22 See Page 22 2 1 3 4 5 2 1 3 4 1 1 1 2 1 1 1 2 3 4 5 6 7 8 E10 F1 F2 F3 F4 BLACK YELLOW YELLOW GRAY GRAY E8 E9 BLACK BLACK F5 F6 BLACK BLACK F7 GRAY F8 F9 F10 F11 F12 F13 F14 F15 F16 F17 F18 G1 H1 H2 H3 H4 H5 H6 H7 GRAY GRAY GRAY GRAY GRAY GRAY DARK GRAY BLACK BLA...

Page 213: ... 16 15 14 10 31 27 26 22 13 11 25 23 18 28 19 29 20 30 12 24 1 2 3 4 5 6 7 8 9 1 2 1 1 1 2 3 4 1 2 3 4 1 2 3 4 1 2 3 4 1 2 1 2 1 2 1 2 1 2 3 4 5 6 1 2 3 4 5 6 7 8 1 2 3 4 5 6 1 2 3 4 5 6 7 8 1 1 1 2 3 4 5 6 7 8 1 2 2 1 A A A A A A A A B B A A B B C C D D E E F F A A B B H10 H11 H12 BLACK H13 H14 H15 H16 H17 I1 I2 I3 I4 I5 I6 I7 I8 I9 I10 I11 I12 BLACK BLACK GRAY BLACK GRAY BLACK GRAY BLACK GRAY GR...

Page 214: ... A A A A A A A B B B C C C A A A A A A B B B C C C C E E C C E E C C E E B B E D B A D D A A D C E E C C E E C C E E B B E D B A D D A A D A A B B C C D D D E E E A A B B C C D D D E E E A A A A A A B B B C C C A A A A A A B B B C C C C F F C C F F C B E E B B E E B A D D A A D E H H E D H H D C G G C C G F B B F F A A F J5 J6 J7 J8 J9 J10 J11 J12 J13 J14 J15 J16 J17 BLUE GRAY GRAY BLACK BLACK BLA...

Page 215: ...8 9 10 1 2 3 4 5 6 1 2 3 7 14 13 6 5 12 11 4 3 10 9 2 1 8 10 9 8 7 6 5 4 3 2 1 1 2 3 4 5 6 7 8 1 2 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 10 9 8 7 6 5 4 3 2 1 1 1 1 2 3 4 5 6 7 8 9 1 1 2 1 2 3 4 1 2 1 2 3 4 5 6 1 2 3 4 5 6 1 2 3 4 5 6 J28 J29 J30 J31 J32 J33 K1 BLUE BLACK BLACK BLACK GRAY GRAY DARK GRAY L1 L2 L3 L4 L5 L6 GRAY GRAY M1 BLACK M2 M3 M4 M5 M6 M7 N1 N2 N3 N4 O1 P1 P2 P3 P4 GRAY GR...

Page 216: ... 5 6 1 2 3 4 5 6 1 2 1 2 1 2 3 4 5 6 1 2 3 4 5 6 1 2 3 4 1 2 3 4 5 6 1 3 2 4 1 2 3 4 1 2 3 4 1 2 1 2 2 1 3 4 5 6 7 1 1 1 1 1 1 2 1 2 3 4 1 2 3 4 5 6 7 8 9 101112 1 2 3 4 5 6 7 8 2 1 2 3 4 1 P9 P10 P11 P12 P13 P14 P15 R1 R2 R3 BLUE BLACK BLACK R4 R5 R6 R7 R8 R9 R10 R11 S1 S2 S3 S4 S5 S6 S7 S8 S9 GRAY YELLOW YELLOW YELLOW YELLOW S10 S11 S12 T1 BLACK T2 T3 T4 T5 T6 U1 BLACK BLACK BLACK YELLOW YELLOW ...

Page 217: ...2003 PRIUS EWD493U 216 K CONNECTOR LIST 1 2 3 1 2 1 2 1 2 3 1 2 1 2 1 2 3 1 2 1 2 1 2 5 4 3 2 1 V1 V2 V3 V4 V5 BLACK BLUE BROWN BLACK BLACK V6 W1 W2 W3 W4 W5 BLUE BLACK BLACK GRAY DARK GRAY ...

Page 218: ...2003 PRIUS EWD493U 217 MEMO ...

Page 219: ...90980 10906 B15 Battery Blower Motor 82824 47130 B16 Battery Blower Motor Controller 90980 11676 B17 Battery ECU 90980 11392 B18 Battery ECU 90980 11424 B19 Battery Fan Relay 82660 20340 B20 Buckle SW and Tension Reducer LH B21 Buckle SW RH and Seat Belt Warning Occupant Detection Sensor 90980 11471 B22 Battery Input Relay 90980 12199 C 1 Camshaft Position Sensor 90980 10947 C 2 Camshaft Timing Oi...

Page 220: ...2 Ignition Coil and Igniter No 2 90980 11885 I 3 Ignition Coil and Igniter No 3 90980 11885 I 4 Ignition Coil and Igniter No 4 I 5 Injector No 1 I 6 Injector No 2 90980 11875 I 7 Injector No 3 90980 11875 I 8 Injector No 4 I 9 Inverter 90980 11034 I10 Inverter 90980 10891 I11 Inverter 90980 10988 I12 Inverter 90980 10897 I13 Inverter 90980 11943 I14 Inverter 90980 11944 I15 Ignition SW 90980 11615...

Page 221: ... R 1 Radiator Fan Motor 90980 11237 R 2 Radio and Player 90980 10996 R 3 Radio and Player 90980 10997 R 4 Radio and Player 90980 10803 R 5 Remote Control Mirror SW 90980 11657 R 6 Rear Combination Light LH 90980 11011 R 7 Rear Combination Light RH 90980 11011 R 8 Rear Speaker LH 90980 10935 R 9 Rear Speaker RH 90980 10935 R10 Remote Control Mirror LH 90980 11587 R11 Remote Control Mirror RH 90980 ...

Page 222: ...L Code Part Name Part Number Code Part Name Part Number 2003 PRIUS EWD493U 221 ...

Page 223: ...M OVERALL ELECTRICAL WIRING DIAGRAM 2003 PRIUS EWD493U 222 ...

Page 224: ...tem for the overall wiring diagram is the same as above E Indicates a Relay Block No shading is used and only the Relay Block No is shown to distinguish it from the J B Example Indicates Relay Block No 1 F Junction Block The number in the circle is the J B No and the connector code is shown beside it Junction Blocks are shaded to clearly separate them from other parts 3C indicates that it is insid...

Page 225: ...orn 12 2 Hybrid Vehicle Immobiliser System 2 16 Illumination 8 2 Interior Light 10 3 Key Reminder 9 2 Light Auto Turn Off 9 3 Light Reminder Buzzer 9 2 Navigation System 14 5 Power Source 1 24 1 Power Window 18 2 Radiator Fan and Condenser Fan 22 3 Radio and Player 14 2 Rear Window Defogger 22 2 Remote Control Mirror 11 2 Seat Belt Warning 9 4 Shift Lock 13 3 SRS 21 2 Stop Light 3 4 Taillight 7 2 ...

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Page 227: ...T CONTROL CRUISE IH Right kick panel 2B 6 2A 7 22 A 21 A 14 A 3 B 2 B G H J 11 4 14 A 13 11 4 B W R W B Y W G L GR B R W B W W B GR L R G Y B R GR L BR GR B GR L GR GR B W B W B B Y W G W G I15 IGNITION SW L Y 2G 2 2A 4 L L Y F10 F12 FUSIBLE LINK BLOCK NO 1 A C F13 D J11 JUNCTION CONNECTOR MPX MPD1 MPX1 MPX MPX MPX2 MPD2 MP2 E10 ENGINE CONTROL MODULE G 1 GATEWAY ECU A 7 A C AMPLIFIER C10 C11 COMBI...

Page 228: ...2003 PRIUS EWD493U M OVERALL ELECTRICAL WIRING DIAGRAM ...

Page 229: ... VPA1 EP1 VCP2 VPA2 EP2 P N D B R VSFT SFT GSFT EOM H10 H11 HYBRID VEHICLE CONTROL ECU C A J18 J19 JUNCTION CONNECTOR A B J24 J25 JUNCTION CONNECTOR A B 1 J24 J25 JUNCTION CONNECTOR A B JUNCTION CONNECTOR B A J22 J23 From Stop Light SW 3 4 J21 JUNCTION CONNECTOR J17 JUNCTION CONNECTOR A13 ACCEL POSITION SENSOR P 1 PARK NEUTRAL POSITION SW C14 CRUISE CONTROL SW COMB SW H12 B E H13 D H14 3 S 3 STOP ...

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Page 231: ... B W Y BR G W B R G R P L B W R W GR W B ETH ETH HTE HTE ESTP SPDO GSNG GSN GRF GRFG GCS GCSG GMTG GMT MSNG MSN MCS MCSG MRF MRFG MMTG MMT GSNG GSN GRF GRFG GCS GCSG GMTG GMT MSNG MSN MCS MCSG MRF MRFG MMTG MMT JUNCTION CONNECTOR B A J 8 J 9 1 1 1 1 1 1 1 1 B B J18 JUNCTION CONNECTOR W B H10 H11 C A B E H13 H12 D H14 HYBRID VEHICLE CONTROL ECU W B W B W B E W G W B 1 1 M 2 MOTOR GENERATOR NO 1 A M...

Page 232: ...2003 PRIUS EWD493U M OVERALL ELECTRICAL WIRING DIAGRAM ...

Page 233: ...1 C A B E H13 H12 D H14 HYBRID VEHICLE CONTROL ECU I 9 I10 INVERTER D C MSIV MSDN MIT MWU MUU MVU MIVG MIVA MIVB MIWB VB MIWA GIVA GIVB GIWB GIWA GSDN GIT GWU GVU GUU GIVG MFIV GSIV GFIV ILK I11 A 2 High Voltage 273 6V I12 B H W 1 B W I13 E I14 F 1 Shielded C D E F 1 1 1 1 W B I B R G D 5 D 4 IA1 13 IA1 12 B1 B2 W G W G W G W G W G 1 A 5 B 4 A 4 B IH1 1 2 IH1 3 A 2 A 14 IE1 W G W G Y B R Y L O L O...

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Page 235: ... G R V GR P W B W B W B Y Y B Y R W W B R G R W B L W B R G 1 R W B L 1 W B R G R W B L LG V G R L B W WFSE TC SIL CON1 CON2 CON3 AS1G AS1 HTD HTD DTH DTH GB IB HTB HTB BTH BTH ABFS FCVC To Data Link Connector 3 2 6 W B W B W B W B O 2 O 2 1 2 W S 8 S 9 SYSTEM MAIN RELAY A B J32 J33 JUNCTION CONNECTOR A B B17 B18 BATTERY ECU A B C 3 CIRCUIT BREAKER SENSOR G Y L R 2 High Voltage 273 6V W B 3 A 4 A ...

Page 236: ...2003 PRIUS EWD493U M OVERALL ELECTRICAL WIRING DIAGRAM ...

Page 237: ...CONNECTOR IGCT RELAY B19 BATTERY FAN RELAY W G C O V Y 14 2 GR B GR 15 O 3 LG B 16 L O 4 LG 17 P 5 Y B 18 L W 6 L 7 LG R 20 Y 8 P L 21 G 9 L R 22 G W 10 R 23 W 11 L B 24 HYBRID VEHICLE BATTERY BUSBER MODULE L 1 L 2 B 3 B 4 W 5 W 6 R 7 R 8 G 9 G 10 O O 2 2 SERVICE PLUG O 2 F E O 2 1 A 1 B HYBRID VEHICLE BATTERY BUSBER MODULE SENSOR O 2 HYBRID VEHICLE BATTERY B A H16 H17 2 High Voltage 273 6V EC Eng...

Page 238: ...2003 PRIUS EWD493U MEMO ...

Page 239: ...2003 PRIUS EWD493U M OVERALL ELECTRICAL WIRING DIAGRAM ...

Page 240: ...R G R W B W B W B L W R B W R G W L B B W B W GR G R R W G R G R GR B B B B W B B B W 120A MAIN BATTERY F18 FUSIBLE LINK BLOCK NO 2 1 A A A F11 F12 FUSIBLE LINK BLOCK NO 1 B C D F13 100A DC DC I15 IGNITION SW W R J 7 JUNCTION CONNECTOR J 1 JUNCTION CONNECTOR A F16 FUEL PUMP J17 JUNCTION CONNECTOR JUNCTION CONNECTOR B A J 4 J 5 19 IA1 C A B 2 B GR 11 4 A 7 A C AMPLIFIER MP2 MPX MPX MPX 16 15 GR B G...

Page 241: ...2003 PRIUS EWD493U M ...

Page 242: ...R I 1 IGNITER COIL AND IGNITER NO 1 I 2 IGNITER COIL AND IGNITER NO 2 I 3 IGNITER COIL AND IGNITER NO 3 V 2 VSV EVAP M 1 MASS AIR FLOW METER E 1 ENGINE COOLANT TEMP SENSOR O 1 OIL PRESSURE SW BR 25 A B W B R B R B R B R IGF I 4 IGNITER COIL AND IGNITER NO 4 1 1 Shielded E ngine C ontrol O W B E 7 E 8 ENGINE CONTROL MODULE A B E 9 C E10 D J24 JUNCTION CONNECTOR A A From Airbag Sensor Assembly 21 3 ...

Page 243: ...2003 PRIUS EWD493U M OVERALL ELECTRICAL WIRING DIAGRAM ...

Page 244: ...R HC Adsorber and Catalyst System V 4 VAPOR PRESSURE SENSOR J 8 J 9 JUNCTION CONNECTOR A B JUNCTION CONNECTOR B A J12 J13 T 2 THROTTLE CONTROL MOTOR H 3 HEATED OXYGEN SENSOR Bank 1 Sensor 1 H 9 HEATED OXYGEN SENSOR Bank 1 Sensor 2 J22 J23 JUNCTION CONNECTOR A B V 5 VSV Canister Closed Valve C 2 CAMSHAFT TIMING OIL CONTROL VALVE T 3 THROTTLE POSITION SENSOR HCLS VC PTNK VTA VTA2 E2 HT1A OX1A 10 20 ...

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Page 246: ... POSITION SENSOR C 6 CRANKSHAFT POSITION SENSOR NEO ACT ESTP 1 1 1 R G B W B W R G B R B W R G B W LG B R W L B W B W B LG B L B W B R G J11 JUNCTION CONNECTOR T 4 TRANSPONDER KEY COMPUTER E B A A 7 B 8 C IF Left kick panel RADIO AND PLAYER C B R 3 R 4 C 7 CENTER CLUSTER SW IND GND CTY KSW IG B D HEVC To Hybrid Vehicle Control ECU 1 20 To Door Courtesy SW Front LH 10 2 To Unlock Warning SW 9 2 15 ...

Page 247: ...2003 PRIUS EWD493U M OVERALL ELECTRICAL WIRING DIAGRAM ...

Page 248: ...MER SW 13 17 C13 COMBINATION SW 8 7 16 E E F A E B E A E A F A F A D B 15A STOP 2H 1 1 2 9 IB1 3 IA1 8 IA1 2A 10 2A 7 2I 7 2B 6 C A C A H 2 HEADLIGHT RH H 1 HEADLIGHT LH JUNCTION CONNECTOR B A J 4 J 5 JUNCTION CONNECTOR B A J12 J13 E R W R W B R G R L R Y R Y R G R G R G G W G W G W G W G W W B G W 2 2 14 5 5 17 R Y R G R G R W F13 D SHORT PIN R 6 STOP LIGHT LH REAR COMB LIGHT LH S 3 STOP LIGHT SW...

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Page 250: ... O R W R G W B R W R B R G W B R L R G R G R G R G R L R W R G W B R B R G W B R B R G R G R B R G R R Y R W R W R G R G R R R G L Y B R R B R G W B R G JUNCTION CONNECTOR B A J27 J28 R G HEAD RELAY DIM RELAY 10A HEAD LO LH 10A HEAD LO RH 10A HEAD HI LH 10A HEAD HI RH H 1 HEADLIGHT LH H 2 HEADLIGHT RH R L R W J 1 JUNCTION CONNECTOR J20 JUNCTION CONNECTOR D 5 DIODE Daytime Running Light 13 8 16 J17...

Page 251: ...2003 PRIUS EWD493U M OVERALL ELECTRICAL WIRING DIAGRAM ...

Page 252: ... HAZARD SW HAZARD WARNING SW C13 TURN SIGNAL SW COMB SW T 5 TURN SIGNAL FLASHER RELAY 2 1 F 8 FRONT TURN SIGNAL LIGHT RH IE A Cowl side panel LH A A A A 1 2 F 7 FRONT TURN SIGNAL LIGHT LH J12 J13 JUNCTION CONNECTOR A B J 4 JUNCTION CONNECTOR J 7 JUNCTION CONNECTOR 2F 3 2J 12 W B G B A A W B D B E A J24 JUNCTION CONNECTOR BK BI 5 3 5 3 C B B A 2A 1 2M 5 2M 3 R 6 REAR TURN SIGNAL LIGHT LH REAR COMB ...

Page 253: ...2003 PRIUS EWD493U M ...

Page 254: ...center W B C B B A W B 5 4 5 4 W B R B R B B A B A B B R B 9 IF1 D A D A B B 5 IJ1 R B R B R B R B R 7 BACK UP LIGHT RH REAR COMB LIGHT RH R 6 BACK UP LIGHT LH REAR COMB LIGHT LH JUNCTION CONNECTOR B A J32 J33 JUNCTION CONNECTOR B A J30 J31 JUNCTION CONNECTOR B A J27 J28 E 9 E10 ENGINE CONTROL MODULE C D B ack Up Light P ow er S ource To Navigation ECU 14 6 19 C HTE 18 C HTE HTE HTE Y E E A A BR W...

Page 255: ...2003 PRIUS EWD493U M OVERALL ELECTRICAL WIRING DIAGRAM ...

Page 256: ...R A Cowl side panel RH 2F 5 2J 7 2L 5 OFF TAIL HEAD 16 6 ID2 2 ID2 10 IA1 D A D A F B F B A A BI Left side of rear pillar BK Back panel center 1 6 1 6 11 18 5 5 14 F 3 FRONT PARKING LIGHT LH F 6 FRONT SIDE MARKER LIGHT RH L 2 LICENSE PLATE LIGHT LH R 6 TAILLIGHT LH REAR COMB LIGHT LH L 3 LICENSE PLATE LIGHT RH R 7 TAILLIGHT RH REAR COMB LIGHT RH J 7 JUNCTION CONNECTOR J32 J33 JUNCTION CONNECTOR A ...

Page 257: ...2003 PRIUS EWD493U M ...

Page 258: ...B W L W L BR W L LG LG LG LG LG 6 5 3 4 W B W B W B W B W B LG R LG W L BR W L W L C B B W L J22 J23 JUNCTION CONNECTOR A B C10 C11 COMBINATION METER A B A22 ASHTRAY ILLUMINATION M 7 MULTI DISPLAY H 7 HAZARD WARNING SW C 7 CENTER CLUSTER SW L 1 LIGHT CONTROL RHEOSTAT J24 JUNCTION CONNECTOR J21 JUNCTION CONNECTOR J21 JUNCTION CONNECTOR J21 JUNCTION CONNECTOR See Taillight System 7 1 J27 J28 JUNCTIO...

Page 259: ...2003 PRIUS EWD493U M OVERALL ELECTRICAL WIRING DIAGRAM ...

Page 260: ...LE SW RH AND SEAT BELT WARNING OCCUPANT DETECTION SENSOR G 1 GATEWAY ECU A 7 A C AMPLIFIER E10 ENGINE CONTROL MODULE 1 2 14 11 4 13 11 B 8 B 9 BODY ECU A B W B W B W B LG LG P L P L W B W B W B W B G O G O G O G O GR B GR GR GR B GR B L BR W G W W G B Y 4 MPX2 MPD1 MPX MPX1 MPD2 MP2 Light A uto Turn Off I15 IGNITION SW 3 12 See Interior Light System 10 2 GR L L GR L See Taillight System 7 1 1 B W ...

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Page 262: ... L Y B L Y L Y L Y R W W B W B R W R W R B R R G R G R R W R W R W R W R W R W R G GR B GR GR L GR GR B L L L J27 JUNCTION CONNECTOR E10 ENGINE CONTROL MODULE G 1 GATEWAY ECU A 7 A C AMPLIFIER 7 5A ECU B 10A GAUGE JUNCTION CONNECTOR B A J12 J13 R L J16 JUNCTION CONNECTOR D 7 DOOR COURTESY SW FRONT RH D 6 DOOR COURTESY SW FRONT LH D 8 DOOR COURTESY SW REAR LH D 9 DOOR COURTESY SW REAR RH J33 JUNCTI...

Page 263: ...2003 PRIUS EWD493U M OVERALL ELECTRICAL WIRING DIAGRAM ...

Page 264: ... F11 F13 FUSIBLE LINK BLOCK NO 1 B D M 9 IG1 8 IG1 M 10 IG1 9 IN1 M 8 IN1 M 10 IN1 A B A A A A A A DOWN UP RIGHT LEFT RIGHT DOWN LEFT UP C C 1 5 3 1 5 3 JUNCTION CONNECTOR B A J24 J25 R10 REMOTE CONTROL MIRROR LH R11 REMOTE CONTROL MIRROR RH J26 JUNCTION CONNECTOR R 5 REMOTE CONTROL MIRROR SW C 8 CIGARETTE LIGHTER L LG BR R W R G BR R W B W B GR GR R GR R GR W W G L LG W R G BR R W B BR R L 4 3 5 ...

Page 265: ...2003 PRIUS EWD493U M ...

Page 266: ...JUNCTION CONNECTOR 30A WIPER 15A WASHER B Y 2H 1 INT OFF WASHER HI LOW B 2 1 S INT1 INT2 M B1 EW WF 17 IA1 15 IA1 16 IA1 A A J17 JUNCTION CONNECTOR IG Cowl side panel RH A J 1 JUNCTION CONNECTOR IE Cowl side panel LH A H 4 HORN 1 3 5 1 2 4 A A J 7 JUNCTION CONNECTOR J18 JUNCTION CONNECTOR 2 IA1 1 2 M 10 IH1 11 17 2 8 7 16 W 1 WASHER MOTOR W B 1J 2 1F 9 W L L Y L W L B L R W B L L Y L W L B L R W B...

Page 267: ...2003 PRIUS EWD493U M OVERALL ELECTRICAL WIRING DIAGRAM ...

Page 268: ... 4 J11 JUNCTION CONNECTOR IG1 RELAY F18 FUSIBLE LINK BLOCK NO 2 BATTERY J26 JUNCTION CONNECTOR J21 JUNCTION CONNECTOR T 6 TENSION REDUCER SOLENOID B20 TENSION REDUCER LH BUCKLE SW LH S 2 SHIFT LOCK ECU ACC RELAY F11 F13 FUSIBLE LINK BLOCK NO 1 B D J27 J28 JUNCTION CONNECTOR A B J14 JUNCTION CONNECTOR J24 J25 JUNCTION CONNECTOR A B From Stop Light SW 3 4 A B A A A A J22 J23 JUNCTION CONNECTOR A B W...

Page 269: ...2003 PRIUS EWD493U MEMO ...

Page 270: ...2003 PRIUS EWD493U M OVERALL ELECTRICAL WIRING DIAGRAM ...

Page 271: ... 9 C 10 C 2 B 6 B 9 IJ2 8 IJ2 4 IJ1 B A C D E F G H I J K C B B F C F C 7 8 4 2 9 1 B C F GR P B L R BR G R G R P V GR R GR R GR R GR R L Y L Y L Y GR R P L R G B Y L Y GR R W R Y B L LG V P BR BR P V LG L B Y R W B Y R G L Y L Y GR R GR R GR R V 2 P 2 R G GR R GR R GR R L Y P L L Y R adio and Player P ow er S ource GR R 7 IF1 8 IF1 5 IF1 6 IF1 F14 FRONT DOOR SPEAKER LH F15 FRONT DOOR SPEAKER RH R...

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Page 273: ... P 2 V 2 R G GR R GR R L Y L Y B Y 12 5 9 2 8 A E10 ENGINE CONTROL MODULE B 8 BODY ECU A 7 A C AMPLIFIER C11 COMBINATION METER J21 JUNCTION CONNECTOR J24 JUNCTION CONNECTOR J11 JUNCTION CONNECTOR JUNCTION CONNECTOR B A J22 J23 J14 JUNCTION CONNECTOR J21 JUNCTION CONNECTOR To Combination Meter 23 3 F A H B JUNCTION CONNECTOR B A J27 J28 R G R Y To Parking Brake SW 19 8 G 1 GATEWAY ECU 2 2 2 2 2 2 F...

Page 274: ...2003 PRIUS EWD493U M OVERALL ELECTRICAL WIRING DIAGRAM ...

Page 275: ...OCK WARNING SW 12 IG1 2 G B 10 M IC1 5 IG1 7 A 6 5 IG1 See Power Window System 18 2 Y Y L B W B G Y W R R G 18 6 5 4 1 2 3 15 6 10 16 DCTY LOCK KUL KL LSWD MPX1 D13 DOOR LOCK MOTOR DOOR KEY LOCK AND UNLOCK SW AND DOOR DETECTION SW FRONT LH UNLOCK P 9 POWER WINDOW MASTER SW W B W B 2L 6 2K 3 12 A 2K 1 See Interior Light System 10 2 10 3 6 3 B Y A W B P ow er S ource 8 15 7 5A ECU B 2C 5 F F J27 JUN...

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Page 277: ... J18 J19 JUNCTION CONNECTOR A B B 8 B 9 BODY ECU A B 1 2 3 6 5 4 2 1 4 6 5 A A 9 16 Door Lock C ontrol D14 DOOR LOCK MOTOR DOOR KEY LOCK AND UNLOCK SW AND DOOR UNLOCK DETECTION SW FRONT RH D12 DOOR LOCK MOTOR AND DOOR UNLOCK DETECTION SW REAR RH D11 DOOR LOCK MOTOR AND DOOR UNLOCK DETECTION SW REAR LH LOCK UNLOCK LOCK UNLOCK 4 2 3 3 W B J14 J15 A JUNCTION CONNECTOR B J17 JUNCTION CONNECTOR 3 1 1 I...

Page 278: ...2003 PRIUS EWD493U M OVERALL ELECTRICAL WIRING DIAGRAM ...

Page 279: ...System 10 2 10 3 A F 5 3 2 15 8 B E F E B F W B R G R G B R L W B R G B R L L B L B W B W B W B W B W B W B W B B 8 B 9 BODY ECU A B J24 J25 JUNCTION CONNECTOR A B W ireless D oor Lock Control B U 1 UNLOCK WARNING SW J27 JUNCTION CONNECTOR J27 JUNCTION CONNECTOR W 5 WIRELESS DOOR CONTROL RECEIVER PRG RDA E R G 1 12 6 3 J23 JUNCTION CONNECTOR P ower S ource 1 C 1B 2 1J 7 2G 2 2D 4 B L Y F13 D 15A D...

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Page 281: ...B W B W B J18 J19 JUNCTION CONNECTOR A B B 8 B 9 BODY ECU A B 18 6 5 4 1 2 1 2 3 6 5 4 2 1 4 6 5 A A 15 6 10 16 9 16 DCTY KUL KL LSWD MPX1 W ireless D oor Lock C ontrol P 9 POWER WINDOW MASTER SW D13 DOOR LOCK MOTOR DOOR KEY LOCK AND UNLOCK SW AND DOOR UNLOCK DETECTION SW FRONT LH D14 DOOR LOCK MOTOR DOOR KEY LOCK AND UNLOCK SW AND DOOR UNLOCK DETECTION SW FRONT RH D12 DOOR LOCK MOTOR AND DOOR UNL...

Page 282: ...2003 PRIUS EWD493U M OVERALL ELECTRICAL WIRING DIAGRAM ...

Page 283: ...UNCTION CONNECTOR A B Theft Deterrent U 1 UNLOCK WARNING SW J27 JUNCTION CONNECTOR 12 6 3 P ow er S ource B 10 A 6 16 B 7 B 17 A 14 B 15 B 18 A J27 JUNCTION CONNECTOR F F 8 15 W B 2I 4 2J 1 2L 8 2L 9 9 16 A 20 A 13 B 13 9 IE1 10 IE1 IE Cowl side panel LH 4 ID2 10 A W B W B R W B W B W R W LG B B R B R W R G R G A 2 1 A A J 1 JUNCTION CONNECTOR J 7 JUNCTION CONNECTOR From HORN Relay 12 1 E 2 ENGINE...

Page 284: ...2003 PRIUS EWD493U M ...

Page 285: ...W MOTOR REAR LH 1 BA1 7 IB1 2J 10 2K 5 2L 2 2L 1 M 5 2 1 4 18 4 6 1 4 6 1 4 6 1 3 4 5 2 1 A F C 1 C 14 1 5 10 F A BI Left side of rear pillar 5 2 3 5 2 3 2 5 3 8 9 20 11 13 12 W B W L O G R L O G R B W W L W G B R W L W L W R L R L Y W R B L B L W R R L Y R W G B L W R W G B L W W B W L W L O G R G Y W B G Y W B G Y W B W B Y G O P L GR L Y L Y L W W B W B W B W B L W R G R G W B L W L W 15 2 L W ...

Page 286: ...2003 PRIUS EWD493U M OVERALL ELECTRICAL WIRING DIAGRAM ...

Page 287: ...A IH Right kick panel 4 3 2 1 4 3 2 1 3 1 6 4 2 2 2 2 3 3 2 2 2 2 3 3 2 ACC IG1 ST1 IG2 ST2 AM1 4 6 7 AM2 1B 2 1K 4 1K 6 30A ABS NO 2 20A ABS NO 3 15A AM2 3 C B 14 IA2 J 1J 9 2G 1 2C 2 G H L 40A ABS NO 1 10A ABS NO 4 K I F M N O 6 2B 7 2A P ow er S ource A B S G W G Y G L O LG R Y B B L GR GR B R V R B W L B W D E L O Y B Y B L W R B L W L B L G W Y G G LG R R Y B L BR D F13 W L W R 1 2 W L B W HY...

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Page 289: ...B W B GR B R1 MR1 R2 MR2 GND1 GND2 MTT MT MT PH PL LBL GND3 GND4 SFRH SFRR SFLH SFLR SRRH SRRR SMC1 SMC2 SS AST SLA SLA SLR SLR 11 A A A A 4 4 A A A L B W B W R B R W Y B R G R Y R L G W G B G O B O L LG P V B L Y B LG R L O Y G W B W B W L Y G Y GR Y R LG R W B W B W B W B W B W B W B W B W B W B MP2 MPX B10 B11 BRAKE ECU A B H 5 H 6 HYDRAULIC BOOSTER A B B 1 B 2 BRAKE ACTUATOR A B R A E10 ENGINE...

Page 290: ...2003 PRIUS EWD493U M OVERALL ELECTRICAL WIRING DIAGRAM ...

Page 291: ...CU A B B13 D C B12 B 3 C B 1 B 2 BRAKE ACTUATOR A B B W R B W R B W R B W R P B W L GR G G W LG V G R R G BR P W B L P L P L Y BR BR B B W Shielded Shielded Shielded Shielded Shielded Shielded Shielded Shielded Shielded Shielded HVI HVI HVO HVO FL FL FSS FR FR RL RL RSS RR RR RRO RLO VCM PMC E2 SG1 VREG PREG EREG SG2 VFR PFR EFR SG3 VRR PRR ERR SG4 TC D G TS STP Shielded A A A 2 2 1 1 1 2 A 4 ABS ...

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Page 293: ... 2 1 3 4 2 1 M 1 B 2 B IG Cowl side panel RH 2 C A A A B A B 4 D 10 D IO1 5 B W Shielded Shielded B G R W W B GR B B Y Y B Y W L P B GR G W B GR W B W B W B B B Y D 1 DC MOTOR To Data Link Connector 3 2 5 2 6 R G B R 2 1 EMPS RELAY B Y W E 3 E 4 EMPS ECU A B E 5 C E 6 D J14 J15 JUNCTION CONNECTOR A B A A J17 JUNCTION CONNECTOR J18 J19 JUNCTION CONNECTOR A B PGND TRQV TRQ1 TRQ2 TRQG WRR WRL RLY PIG...

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Page 295: ... BR W W R BR GR W P B A19 C B O To Data Link Connector 3 2 5 2 6 2 1 6 A 5 A Y R Y G S 6 SIDE AIRBAG SQUIB LH SFL SFL C 2 C 1 2 1 Y G Y R S 7 SIDE AIRBAG SQUIB RH SFR SFR 2E 3 C 5 C 6 2 1 Y B Y P15 PRETENSIONER RH PR PR W B PL PL P14 PRETENSIONER LH Y Y B A 1 2 1 2 A 4 3 2 1 1 2 3 7 A 10 A 12 A 9 A 4 GR L LG B L W P L ESL SSL SSL VUPL 3 B LA B Y 2E 1 2A 9 2B 4 B Y L W P B 2B 5 2E 2 B W 10A ACC 2D ...

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Page 297: ...B 11 IE1 1 2 W B W B W B To Engine Control Module 2 13 A 3 A C SINGLE PRESSURE SW W 4 WATER TEMP SW To A C Amplifier 24 7 N 4 NOISE FILTER Rear Window Defogger J 7 JUNCTION CONNECTOR JUNCTION CONNECTOR B A J27 J28 A 1 A C CONDENSER FAN MOTOR DEF RELAY FAN NO 2 RELAY FAN NO 3 RELAY A A 13 A A V Y V Y V Y V Y W B W B W B L W W B LG L W R W W G G W B Y W W B 1 I15 IGNITION SW 15 A W G 2 11 GR B GR 3 ...

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Page 299: ...panel 5 1 See Illumination System 8 4 L L Y See Back Up Light System 6 3 See ABS System 19 4 See EMPS System 20 4 15 A 2J 6 2J 8 2J 9 16 A 9 B 7 5A ECU B 2C 5 BR L L L L R G L V W L L L L L Y Y B BR R GR B GR B From Navigation ECU 14 5 R G R G GR GR L GR V W V W V W J27 J28 JUNCTION CONNECTOR A B FromEngine Control Module 2 13 From Hybrid Vehicle Control ECU 1 19 F F J27 JUNCTION CONNECTOR BODY EC...

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Page 301: ...P SEAT BELT Front Passenger s Seat WATER TEMP High WATER TEMP Low CRUISE OUTPUT CONTROL CHARGE OIL B 5 19 A 18 A 17 A 4 B 10 A 16 A Combination M eter See Turn Signal Light System 5 4 See Headlight System 3 3 4 4 See SRS System 21 3 See Engine Control System 2 4 See ABS System 19 4 See SRS System 21 3 C10 C11 COMBINATION METER A B ...

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Page 303: ... A A B A A D 8 A F A ir C onditioning 1 2 3 A A 4 B F 2 2 2 2 1 1 5A AM1 4 1 A F B R 3 G W 3 G R L L O B L W B L L R W B R L Y LG R V R G G W B R B W B R B R V B R L O B L LG R R W B W B W B W B R R LG R V L Y R L R R G R G L Y L R R A 7 A 8 A C AMPLIFIER A B 1 1 R L HTR RELAY CLR MG RELAY J 2 J 3 JUNCTION CONNECTOR A B B 6 BLOWER MOTOR B 7 BLOWER MOTOR LINEAR CONTROLLER A J 7 JUNCTION CONNECTOR M...

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Page 305: ...B GR GR B LG P G R W W W W W W L BR W W L BR W W L BR W V Y W W W W W W W W W W W W W R BR Y Y R L BR R B 8 BODY ECU A E 8 E 9 ENGINE CONTROL MODULE B C A10 A C ROOM TEMP SENSOR A12 A C THERMISTOR From FAN NO 1 and FAN NO 2 Relay 22 4 LOCK SGLOCK CF S5TS TS SGTPI S5TPI TPI AIF AIR S5TP SGTP TP AMC AMH MPX MP2 NE ACT RF TR SGTR TE SGTE A 2 A C MAGNETIC CLUTCH AND LOCK SENSOR MPX MPD2 MPX1 MPX2 TAM ...

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Page 307: ... A B B R 3 G W 3 G R L P P B R L R L P B G R W W W W W W BR W GR L R Y B P L R R L G G W B R L Y P B P B W B W B W B W B W B A A A 1 2 3 4 5 J 1 JUNCTION CONNECTOR J11 JUNCTION CONNECTOR S5TPM SGTPM TPM AOF AOD HTRO HTR2 BSET TSET MSET PIG5 PSG SW A C SW F R SW RDEF SW FULL A C PIG LED A C LED F R LED RDEF LED FULL A C HTR3 RELAY HTR2 RELAY HTR1 RELAY A16 AIR VENT MODE CONTROL SERVO MOTOR 1 A 3 B ...

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Toyota 2003 Prius, Manual

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