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Group 28

Specifications

VOLVO D7C EECU/EA Connector

Cavity

Color

Description

OIL TEMPERATURE

BL/W

BOOST TEMPERATURE

BOOST PRESSURE

GN/W

BOOST, OIL & FUEL PRESSURE COMMON (+)

BN/W

PRESSURE & TEMP. SENSOR COMMON

NOT USED

REDUNDANT ENGINE SPEED SENSOR (+)

Y/R

RACK DRIVE, PWM (+)

Y/SB

TIMING SLEEVE, PWM

GN/BN

RACK DRIVE, PWM (-)

11-12

NOT USED

GN/BN

FUEL TEMPERATURE

OIL PRESSURE

GR/SB

NEEDLE LIFT )

BL/R

RACK POSITION SENSOR, SEARCH COIL

Y/GR

RACK POSITION SENSOR, COMMON

BN/W

REDUNDANT ENGINE SPEED SENSOR (-)

19-20

NOT USED

TIMING SLEEVE, PWM (-)

22-24

NOT USED

Y/W

COOLANT TEMPERATURE

NOT USED

FUEL PRESSURE

GR/R

NEEDLE LIFT SENSOR (-)

Y/W

RACK POSITION SENSOR, REFERENCE COIL

BL/SB

ENGINE SPEED SENSOR, CRANK(+)

BL/R

ENGINE SPEED SENSOR, CRANK(-)

32-36

NOT USED

BLUE

RED

Wire Colors:

BROWN

SOLID BLACK

GREEN

VIOLET

GRAY

WHITE

ORANGE

YELLOW

PINK

W3000945

Содержание TSI

Страница 1: ......

Страница 2: ...eference is made to an S R T The following levels of observations cautions and warnings are used in this Service Documentation Note Indicates a procedure practice or condition that must be followed in...

Страница 3: ...28 Schematic 29 D12C 29 Schematic 30 D7C 30 Schematic 31 VECU 31 Tools 33 Special Tools 33 Other Special Equipment 35 Design and Function 37 Vehicle Management System 37 Strategy 37 Conventional Contr...

Страница 4: ...essure Check 111 MID 128 PID 102 Boost Pressure 114 Fault Codes 114 MID 128 PID 102 Boost Pressure Check 115 MID 128 PID 105 Boost Air Temperature 118 Fault Codes 118 MID 128 PID 105 Boost Air Tempera...

Страница 5: ...124 EPG 1 155 Fault Codes 155 MID 128 PPID 124 EPG 1 Check 156 MID 128 SID 1 2 3 4 5 6 Injector 157 D12B and D12C 157 Fault Codes 157 MID 128 SID 1 2 3 4 5 6 Injector Check 159 D12B and D12C 159 MID 1...

Страница 6: ...D 128 SID 232 5 Volt DC Supply 189 Fault Codes 189 MID 128 SID 232 5 Volt DC Supply Check 190 MID 128 SID 240 Program Memory 191 Fault Codes 191 MID 128 SID 250 SAE J1587 1708 Information Link 192 Fau...

Страница 7: ...id Valve Status Check 227 MID 144 SID 230 Idle Validation Switch 1 229 Fault Codes 229 MID 144 SID 230 Idle Validation Switch 1 Check 230 MID 144 SID 231 SAE J1939 Control Link 232 Fault Codes 232 MID...

Страница 8: ...6...

Страница 9: ...8 General General Vehicle Management System W2002520 This information covers the Vehicle Management System which includes VECTRO II electronics the vehicle ECU and other control systems used in the ve...

Страница 10: ...device EECU Engine Electronic Control Unit The computer that controls the power supplied to the en gine electronics monitors and governs engine functions EUI Electronic Unit Injector An injector pump...

Страница 11: ...f Automotive Engineers Short circuit A connection of comparatively low resistance acciden tally or intentionally made between two points on a circuit SID Subsystem Identification code Signal A voltage...

Страница 12: ...tage W2003555 Fig 1 EECU with pinouts W2002712 Fig 2 EECU voltage check EA W2002710 Fig 3 EECU voltage check EB B battery voltage Connec tion Signal type Measuring points Ignition key in the ON positi...

Страница 13: ...nt temperature sensor signal EA25 EA5 3 0 V 20 C 68 F 0 6 V 85 C 185 F EA26 Not currently used EA27 Fuel pressure sensor signal EA27 EA5 0 5V for cold engines D12 C EA28 Needle lift sensor EA29 Rack p...

Страница 14: ...EB21 EB9 B fan on 0 V fan off Normally ON with the ignition key in the ON position EB22 Not currently used EB23 Not currently used EB24 EOL Enable EB24 EB9 6 V or O C EOL Disable 9 6 V EOL Enable EB2...

Страница 15: ...2 k 20 C 68 F 2 5 k 40 C 104 F EA3 Intake manifold pressure sensor sig nal EA4 Sensor supply to 5 V EA5 Sensors ground EA6 Not currently used EA7 Redundant engine speed sensor EA7 EA18 775 945 EA8 Ra...

Страница 16: ...used EA35 Not currently used EA36 Not currently used EB1 SAE J1939A Communications link EB2 SAE J1939B Communications link EB3 Ambient air temperature sensor sig nal EB3 EB13 6 2 k 20 C 68 F 1 7 k 50...

Страница 17: ...agnos tics connector 1 EB26 connection B in the 6 pin diag nostics connector 1 EB26 SAE J1587 J1708 B Information link EB26 connection G in the 9 pin diag nostics connector 1 EB27 Not currently used E...

Страница 18: ...n Signal type Measuring points Ignition key in the ON position Other EA1 Oil temperature sensor signal EA1 EA5 3 0 V 20 C 68 F 0 4 V 100 C 212 F EA2 Intake manifold temperature sensor signal EA2 EA5 2...

Страница 19: ...32 Not currently used EA33 VCB EA33 alternate ground B VCB off 0 V VCB on Normally OFF with the ignition key in the ON position EA34 Unit injector cylinder 4 EA35 Unit injector cylinder 5 EA36 Unit in...

Страница 20: ...active Normally ON with the ignition key in the ON position EB22 Not currently used EB23 Not currently used EB24 EOL Enable EB24 EB9 6 V or O C EOL disable 9 6 V EOL Enable EB25 SAE J1587 J1708 Infor...

Страница 21: ...68 F 100 100 C 212 F EA2 Intake manifold temperature sensor signal EA2 EA5 6 2 k 20 C 68 F 2 5 k 40 C 104 F EA3 Intake manifold pressure sensor sig nal EA4 Sensor supply 5 V EA5 Sensor ground EA6 Not...

Страница 22: ...4 EA24 1 5 2 0 EA35 Unit injector cylinder 5 EA35 EA24 1 5 2 0 EA36 Unit injector cylinder 6 EA36 EA24 1 5 2 0 EB1 SAE J1939 Communications link EB2 SAE J1939 Communications link EB3 Ambient air tempe...

Страница 23: ...stics connector 1 EB25 SAE J1587 J1708 A Information link EB25 DCA con nection F in the 9 pin diagnostics con nector 1 EB26 connection B in the 6 pin diag nostics connector 1 EB26 SAE J1587 J1708 B In...

Страница 24: ...olt 13 GN FUEL TEMPERATURE D12C 14 BN OIL PRESSURE 15 17 NOT USED 18 BN W ENGINE POSITION SENSOR CAM 19 21 NOT USED 22 W INJECTOR CYL 2 23 W INJECTOR CYL 3 24 W CYL 4 CYL 5 CYL 6 INJECTOR COM MON 90 V...

Страница 25: ...D 11 R SB POWER SUPPLY 12 R SB POWER SUPPLY 13 V0 W AMBIENT AIR TEMP COMMON 14 15 NOT USED 16 R W PREHEAT SENSE 2 17 BL R AIR FILTER INDICATOR 18 20 NOT USED 21 GR R COOLING FAN CONTROL 22 23 NOT USED...

Страница 26: ...MPERATURE 14 BN OIL PRESSURE 15 GR SB NEEDLE LIFT SENSOR 16 BL R RACK POSITION SENSOR SEARCH COIL 17 Y GR RACK POSITION SENSOR COMMON 18 BN W REDUNDANT ENGINE SPEED SENSOR 19 20 NOT USED 21 OR TIMING...

Страница 27: ...MON 9 W GROUND 10 W GROUND 11 R SB POWER SUPPLY 12 R SB POWER SUPPLY 13 V0 W AMBIENT AIR TEMP COMMON 14 16 NOT USED 17 BL R AIR FILTER INDICATOR 18 23 NOT USED 24 Y SB FACTORY PROGRAMMING NOT USED 25...

Страница 28: ...UIT PRO TECTION FEED 8 571 CLUTCH SWITCH INPUT 9 385 A PARK CONTROL WIPER MOTOR 10 388 INTERMITTENT WIPER INPUT 11 387 C SWITCH TO WASHER MOTOR 12 0XE ELECTRONIC GROUND 13 18V ELECTRONIC ENGINE SWITCH...

Страница 29: ...ROM ENGINE ECU 16 389B INTERMITTENT WIPER RELAY COIL RETURN 17 555A IDLE VALIDATION FROM ENGINE ECU 18 312C RANGE INHIBITOR VALVE RETURN 19 558 ECU COMMON 12V OUTPUT 20 551 VEHICLE SPEED RETURN FROM E...

Страница 30: ...Group 28 Specifications Schematic D12B W2002827 28...

Страница 31: ...Group 28 Specifications Schematic D12C W2003348 29...

Страница 32: ...Group 28 Specifications Schematic D7C W2002826 30...

Страница 33: ...Group 28 Specifications Schematic VECU W3003497 31...

Страница 34: ...32...

Страница 35: ...ic control sys tem The 3917916 VOLVO breakout kit along with its components is available from Volvo Truck When requesting tools provide the appropriate part number Part num bers beginning with J are a...

Страница 36: ...6 pin breakout box J 42472 2 pin breakout harness J 43233 36 pin jumper J 38748 7 pin fuel injection pump breakout box 9809687 AC DC power supply for PC toll optional 9809678 12 Pin DIN Connector cabl...

Страница 37: ...om Volvo quoting the specified part number VCADS Pro tools for diagnostics is for vehicles built from 1998 and later For diagnos tics on vehicles built prior to 1998 use Pro Link 9000 J 38500 with Vol...

Страница 38: ...vehicles prior to 1999 J 43939 9 Pin Diagnostic adapter for vehicles built from January 1999 9998496 Pressure Guage 9998489 Oscilloscope interface 9998554 Oscilloscope Cable BNC connector cable to ban...

Страница 39: ...eive signals from different sensors Each control unit serves its own component and sends signals to other control units via electrical wires An example of this is the engine control unit that re ceive...

Страница 40: ...it increased acceleration If the conditions are met it carries out the VECU s re quest The EECU communicates with the other control units via the data links either by requesting or by receiving direct...

Страница 41: ...s means that the voltage only varies between two different values ei ther high or low By combining these high and low signals various values can be described The diagram shows an oscilloscope image wh...

Страница 42: ...start bit and a stop bit The purpose of the start and stop bits is to function as markers for where that group of data begins and ends In the diagram above only the start and stop bits are la beled T...

Страница 43: ...pedal position percentage C Data 000 The accelerator pedal is in the completely released position 000 is a data component which in this case states how much the accelerator pedal has been pressed down...

Страница 44: ...for di agnostic tools MID MID is an acronym for Message Identification Description MIDs are SAE stan dardized codes used to identify individual electronic control units PID PID is an acronym for Para...

Страница 45: ...inciple The instrument cluster the engine ECU and the diag nostic connector are always included in the system The system may include other control units depending on the vehicle type engine type and o...

Страница 46: ...dards and consists of three twisted wires a green wire 407 a yellow wire 406 and in early deisgns a shield wire 408 optional The twisted wire set 40 turns per meter is used to pro tect the link from e...

Страница 47: ...not be at fault If you measure less than 60 ohm only two terminating resistors are used in a vehicle Never install three in one truck If more than two terminating resistors exist in the J1939 circuit...

Страница 48: ...Wires 400 and 401 MUST NOT be cut or spliced for any connections These wires are used for the trans mission of data for diagnostic messages and gauges Modifying this circuit can cause these functions...

Страница 49: ...t basic checks of all the vital parts of the vehicle s electronics Some programming can also be done via the diagnostic connector The standard diagnostic connector is a 6 pin Deutsch A newer 9 pin Deu...

Страница 50: ...tions or connections should be made to wires 406 yellow 407 green or 408 shielded These wires carry the high speed communications be tween the electronic systems in the vehicle Any modification connec...

Страница 51: ...ation data link For information about the instrumentation that communi cates via the data link refer to service manuals in group 38 Model See Publication WG AC WC WI from 1994 WX with elec tronic engi...

Страница 52: ...ta to other ECUs in the system primarily to the engine ECU For detailed information about the VECU see Vehicle Electronic Control Unit MID 144 Volvo service publica tion number PV776 300 610 The VECU...

Страница 53: ...quested operating requirements The EECU is connected to both the J1939 control data link and the J1587 1708 information data link Note Early production model EECUs may use only the J1587 1708 data lin...

Страница 54: ...oup 28 Design and Function EECU The EECU is an electronic control unit that monitors cer tain operational parameters of the Volvo engine from the SAE J1587 Data Link and appropriate sensors W2003076 5...

Страница 55: ...sh Engine Oil Pressure The EECU will make the 1 STOP lamp light and the icon in the display light up if the oil pressure is 41 3 kPa 6 1 2 psi Also a warning signal sounds if the engine is running Eng...

Страница 56: ...eliminates the possibility of electric shock which may result in per sonal injury or death T2006998 Electronic unit injector Calculating Fuel Quantities The EECU calculates the quantity of fuel to be...

Страница 57: ...etermine which injector is in line for injection In other words each tooth teeth 1 6 represents the start of a cylinder operating phase does not apply to the extra tooth T2007099 Cam sensor wheel Flyw...

Страница 58: ...nsor wheel detects tooth 1 and the flywheel sensor reaches a flat area on the flywheel at the same time At this point the piston is on its way upward in the cylin der and no fuel is injected into the...

Страница 59: ...tion angle and fuel amount takes place continuously regardless of the operational phase of the cylinders Cylinder Balancing The EECU can provide each cylinder with a different quantity of fuel to make...

Страница 60: ...to maintain a constant speed between 48 km h 30 mph and 140 km h 87 mph For the cruise control mode to function the following conditions must be satisfied Cruise control in ON position Brake pedal mu...

Страница 61: ...igh coolant tempera tures during engine operation Should coolant temperature exceed 102 C 216 F the maximum fuel provision is reduced by a certain percentage of its original rating and the coolant tem...

Страница 62: ...icle speed is 0 Parking brake is applied Engine running at idle speed Coolant temperature is above 45 C 113 F Cold starts idling Idling speed is automatically boosted to heat the engine more quickly f...

Страница 63: ...dling position fuel injection must not occur Engine speed must exceed 1200 rpm Clutch pedal must not be depressed Boost pressure must be lower than 152 kPa 22 psi overpressure PTO not activated Vehicl...

Страница 64: ...r ing the entire adjustment procedure 3 Move the ON OFF switch to the RESUME position and hold for four seconds Release the switch the engine speed will drop to approximately 500 RPM 4 The idle speed...

Страница 65: ...Early production model ABS ECUs may be con nected to the J1587 1708 and J1922 data link or have no data link connection at all For detailed information about ABS systems see the ap propriate service l...

Страница 66: ...587 1708 informa tion data link For detailed information about the SRS see Supplemental Restraint System SRS VNL VNM Volvo service publication number PV776 TSP21771 1 Note The SRS system is not availa...

Страница 67: ...ted to both the J1939 control data link and the J1587 1708 information data link Note Early production model transmission ECUs may be connected to the J1587 1708 and J1922 data links For detailed info...

Страница 68: ...e to take measurements on functional circuits Example The 36 pin breakout box allows the technician to measure resistance and voltage on the EECU s EA con nector which covers the engine mounted compon...

Страница 69: ...s reason it is not possible to swap a suspected faulty VECU with one from another vehicle without repro gramming the replacement VECU Replacement VECUs are programmed using the VCADS Pro tool Programm...

Страница 70: ...h a second accelerator pedal the second accelerator pedal signals travel first to the VECU and are transferred to the Engine Electronic Control Unit EECU via the J1939 Control Link A road speed limit...

Страница 71: ...the exhaust pressure governor EPG and compression brake VCB if installed are monitored by the VECU At the request of the ABS ECU the VECU can de activate the engine brake Windshield Wipers Windshield...

Страница 72: ...t is made via a remote mounted switch the ignition switch is the basic engine shut down request After the VECU receives the shut down request the request is sent to the EECU via the J1939 Control Link...

Страница 73: ...turer s WARNINGS CAUTIONS and service procedures Unless otherwise directed turn the ignition switch OFF before disconnecting or connecting any electri cal components Read and understand the manual pro...

Страница 74: ...test 1 calibration 2 programming 3 and job card 4 Double click the desired program in the function tree T0009469 The following can be performed in the Administrative functions Language selection Selec...

Страница 75: ...s VN VHD Sensors and Switches W2003551 Inside cab 1 Throttle position sensor 2 Microswitch service brake 3 Engine Exhaust Brake 4 VECU 5 Pressure Switch Parking and Service Brake 6 ON OFF Resume Switc...

Страница 76: ...re sensor 5 Engine timing crank sensor 6 Engine electronic control unit EECU W2002748 1 Needle lift sensor at injector 1 2 Coolant temperature sensor 3 Redundant engine speed sensor 1 Fuel pres sure t...

Страница 77: ...r 2 Coolant temperature sensor 3 Oil pressure temperature sensor 4 Engine timing crank sensor 5 Engine electronic control unit EECU 6 EECU connector EA EB 7 Engine position cam sensor W2002745 1 Compr...

Страница 78: ...ressure temperature sensor cylinder block This combined sensor monitors oil pressure and oil temperature 3 Fuel Pressure Temperature Sensor Monitors the fuel pressure and fuel temperature 4 Crank Sens...

Страница 79: ...cle equipped with a Volvo en gine Control units may vary slightly in location depending on vehicle and component type variant The locations are virtually the same on a VHD vehicle W3003955 1 Vehicle e...

Страница 80: ...ocation of the different control units on WG and AC vehicles Control units may vary slightly in location depending on vehicle type variant W3003963 1 ABS control unit on right side frame rail 2 Instru...

Страница 81: ...ary slightly in location depending on vehicle type variant W3003961 1 Vehicle electronic control unit VECU location in WX narrow cab only 2 Instrument cluster 3 Engine electronic control unit EECU 4 T...

Страница 82: ...ferent control units on a WXR vehicle Control units may vary slightly in location depending on vehicle type variant W3003962 1 Engine electronic control unit EECU 2 Instrument cluster 3 ABS control un...

Страница 83: ...p 28 Design and Function Fuses and Relays W8000923 The VN VHD vehicles have easy access to the TEC panel Fuses and relays are easily identified by referring to the decals inside the TEC covers W300439...

Страница 84: ...p TEC panel VN B1 1 through B1 6 Ignition Expansion Blocks B2 2 through B2 4 Battery Expansion Blocks PR1 Accessory Power Relay PR2 PR3 Igntion Power Relays One Accessory an two Ignition Power relays...

Страница 85: ...D B1 1 through B1 6 Battery and Ignition Expansion Block PR1 Accessory Power Relay PR2 PR3 PR4 R24 Ignition Power Relays One Accessory and four ignition Power relays are used to transfer the heavy cur...

Страница 86: ...84...

Страница 87: ...lock Braking System 140 Instrument Cluster Center Module 234 Instrument Cluster Left Module 144 VECU Vehicle Electronic Control Unit 130 TECU Transmission Electronic Control Unit PID s Parameter ID s...

Страница 88: ...75 Range inhibitor status solenoid valve 77 Compressor status solenoid valve 78 Interval wiper status relay 79 Area inhibitor status solenoid valve 86 Engine brake torque percent 109 EOG3 drive stage...

Страница 89: ...cial instruction FMI 14 is broadcast when the airbag has stored crash data Engine specific for Injectors FMI value Explanation 2 Short circuit to battery voltage unit injector high side 3 Short circui...

Страница 90: ...the ability to clear fault codes For more information see Data Link Instrumen tation Volvo Service Publication PV776 381 620SM Fault Tracing Strategy CAUTION Check that the proper cable and connector...

Страница 91: ...ing measurements Measurements outside expected values may indicate faults in the wiring or in the VECU itself W3003494 Check of Component In this procedure the component is disconnected and measuremen...

Страница 92: ...ed to program test and read information from the VECU and EECU A number of real time tests can be performed by con necting the VCADS Pro tool to the vehicle s diagnostic connector If a test in the VCA...

Страница 93: ...ID 94 Fuel Delivery Pressure page 106 MID 128 PID 100 Engine Oil Pressure 1 3 4 MID 128 PID 100 En gine Oil Pressure page 110 MID 128 PID 102 Boost Pressure 3 4 MID 128 PID 102 Boost Pressure page 114...

Страница 94: ...11 MID 128 SID 1 2 3 4 5 6 Injector page 157 MID 128 SID 17 Fuel Shutoff Valve D7C only 3 4 5 MID 128 SID 17 Fuel Shutoff Valve page 161 MID 128 SID 20 Timing Sleeve D7C only 2 3 4 5 6 7 8 11 MID 128...

Страница 95: ...1 SAE J1939 Control Link page 187 MID 128 SID 232 5 Volt DC Supply 3 4 MID 128 SID 232 5 Volt DC Supply page 189 MID 128 SID 240 Program Memory 2 12 MID 128 SID 240 Pro gram Memory page 191 MID 128 SI...

Страница 96: ...Group 28 Troubleshooting 94...

Страница 97: ...e preheating relay is not activated White smoke for cold start Difficult to start in extreme cold FMI 4 Short circuit to ground Conditions for fault code Output switched off Short circuit to ground on...

Страница 98: ...7C small solid black wire D12B small blue red wire using voltmeter J 39200 Ignition key must be in the ON posi tion Measuring points Optimal value Supply wire al ternate ground B J 39200 Check of comp...

Страница 99: ...ol unit is not avail able SAE J1587 message Conditions for fault code PID 49 the message is unavailable or is not be ing updated regularly Possible cause Error in the information link SAE J1587 Error...

Страница 100: ...m has any active fault codes This fault code could be due to the fact that there is a fault in the ABS system Check of Subsystem Check of the SAE J1587 Information link 1 Ignition key must be in the O...

Страница 101: ...ymptom Yellow lamp lights up If FMI 11 has also been set the maximum engine speed is approx 1700 rpm FMI 11 Vehicle road speed signal not available SAE J1939 message Conditions for fault code The vehi...

Страница 102: ...and the VECU This fault code could be due to the fact that there is a fault in any of these components Check of Subsystem Check of the SAE J1587 Information link 1 Ignition key must be in the OFF posi...

Страница 103: ...not available SAE J1587 message Conditions for fault code PID 85 the message is unavailable or not being updated regularly Possible cause Fault in the information link SAE J1587 Fault in the VECU Rea...

Страница 104: ...trol switch and VECU This fault code could be due to the fact that there is a fault in any of these components Check of Subsystem Check of the SAE J1587 Information link 1 Ignition key must be in the...

Страница 105: ...instead of the accelerator pedal position sensor FMI 11 Accelerator pedal faulty SAE J1939 message Conditions for fault code Faults in the accelerator pedal sensor are sent on the communications link...

Страница 106: ...tor pedal and the VECU This fault code could be due to the fact that there is a fault in any of these components Check of Subsystem Check of the SAE J1587 Information link 1 Ignition key must be in th...

Страница 107: ...start Blue smoke FMI 3 Short circuit to voltage or permanent loss of signal Conditions for fault code The voltage on EA27 is below the alarm limit Possible cause Short circuit to voltage 5 V supply w...

Страница 108: ...esistance with ohmme ter J 39200 Ignition key must be in the OFF posi tion Measuring points Optimal value 4 alternate ground 1 J 39200 Supply wire 4 Measure the voltage with voltmeter J 39200 Ignition...

Страница 109: ...tion Connect breakout box J 41132 in se ries between connector EA and the EECU Connect jumper harness J 43233 in series between connector EB and the EECU Measuring points Optimal value EA27 EA5 0 5 V...

Страница 110: ...Group 28 Troubleshooting Fuel Pressure Sensor Pres sure Voltage Chart W2002799 108...

Страница 111: ...w 5 mph 3 km h if engine protection is chosen in the data set FMI 3 Short circuit to voltage Conditions for fault code The voltage on EA14 exceeds 4 95 V Possible cause Short circuit to battery voltag...

Страница 112: ...e with ohmme ter J 39200 Ignition key must be in the OFF posi tion Measuring points Optimal value 4 alternate ground 1 J 39200 Supply wire 4 Measure the voltage with voltmeter J 39200 Ignition key mus...

Страница 113: ...box J 41132 in se ries between connector EA and the EECU Connect jumper harness J 43233 in series between connector EB and the EECU Measuring points Optimal value EA14 EA5 0 5 V engine not running Not...

Страница 114: ...Group 28 Troubleshooting Oil Pressure Sensor Pres sure Voltage Chart W2002732 112...

Страница 115: ...s requested The EECU stops sending PID 102 Power reduction Noticeable external symptom Yellow lamp lights up The boost pressure gauge shows 0 Low power output FMI 4 Short circuit to ground or open cir...

Страница 116: ...th ohmme ter J 39200 Ignition key must be in the OFF posi tion Measuring points Optimal value 4 alternate ground 1 J 39200 Supply wire 4 Measure the voltage with voltmeter J 39200 Ignition key must be...

Страница 117: ...41132 in se ries between connector EA and the EECU Connect jumper harness J 43233 in series between connector EB and the EECU Measuring points Optimal value EA3 EA5 1 2 V sea level engine not run ning...

Страница 118: ...Group 28 Troubleshooting Boost Pressure Sensor Pres sure Voltage Chart W2002730 116...

Страница 119: ...5 V Possible cause Short circuit to voltage signal wire Short circuit to voltage ground wire Break signal wire Break ground wire Fault in sensor Reaction from the EECU Fault code is set Yellow lamp is...

Страница 120: ...easuring points Optimal value 4 alternate ground 1 J 39200 Supply wire 4 Measure the voltage with voltmeter J 39200 Ignition key must be in the ON posi tion Measuring points Optimal value 1 alternate...

Страница 121: ...ries between connector EA and the EECU Connect jumper harness J 43233 in series between connector EB and the EECU Measuring points Optimal value EA2 EA5 2 6 V 20 C 68 F EA2 EA5 1 6 V 40 C 104 F Note...

Страница 122: ...Group 28 Troubleshooting Boost Air Temperature Sensor Temperature Resistance Chart W2002728 120...

Страница 123: ...t in sensor Reaction from the EECU Fault code is set Yellow lamp is requested Noticeable external symptom Yellow lamp is illuminated Loss of tractive power Possible action Check replace the air filter...

Страница 124: ...ticeable external symptom Yellow lamp lights up Possible checks MID 128 PID 107 Air Filter Differential Pressure Check page 124 FMI 5 Break Conditions for fault code Voltage between EB17 EB8 exceeds 7...

Страница 125: ...Measure the voltage at the supply wire using DMM J 39200 Ignition key must be in the ON posi tion Measuring points Optimal value 1 alternate ground 80 B J 39200 Check of Component Note Faults in the...

Страница 126: ...ult in the EECU The EECU has been exposed to extremely high pressure Reaction from the EECU Fault code is set Yellow lamp is requested Noticeable external symptom Yellow lamp lights up Poor response a...

Страница 127: ...ut The engine is shut down if engine protection is cho sen in the data set FMI 3 Short circuit to voltage or open circuit Conditions for fault code The voltage on EA25 exceeds 4 95 V Possible cause Sh...

Страница 128: ...on key must be in the OFF posi tion Measuring points Optimal value 1 alternate ground 1 4 k J 39200 Check of component Coolant temperature sensor 1 Disconnect the connector to the coolant temperature...

Страница 129: ...Group 28 Troubleshooting Coolant Temperature Sensor Tem perature Resistance Chart W2002729 127...

Страница 130: ...e Coolant level switch closed The voltage on EB7 is under 45 of the battery voltage Possible cause Low coolant level Short circuit to ground signal wire Fault in sensor Reaction from the EECU Fault co...

Страница 131: ...nate ground 1 J 39200 Signal wire 4 Measure the resistance with ohmme ter J 39200 Ignition key must be in the OFF posi tion Measuring points Optimal value 2 alternate ground 2 1 k J 39200 Check of com...

Страница 132: ...FMI 3 Battery voltage too high Conditions for fault code The battery voltage exceeds 36 V Possible cause Fault in alternator Fast charger connected Reaction from the EECU Fault code is set Yellow lam...

Страница 133: ...r detailed circuit information refer to VNL VNM Elec trical Schematics Group 37 Check of Subsystem EECU supply relay 1 Ignition key must be in the ON posi tion Connect breakout box J 41132 in se ries...

Страница 134: ...ds 4 95 V Possible cause Short circuit to voltage signal wire Short circuit to voltage ground wire Break signal wire Break ground wire Fault in sensor Reaction from the EECU Fault code is set Yellow l...

Страница 135: ...ohmme ter J 39200 Ignition key must be in the OFF posi tion Measuring points Optimal value 3 alternate ground 6 k J 39200 Check of component Air temperature sensor 1 Disconnect the connector to the a...

Страница 136: ...Group 28 Troubleshooting Ambient Air Temperature Sensor Temperature Resistance Chart W2002733 134...

Страница 137: ...voltage signal wire Short circuit to voltage ground wire Break signal wire Break ground wire Fault in sensor Reaction from the EECU Fault code is set Yellow lamp is requested Noticeable external sympt...

Страница 138: ...F posi tion Measuring points Optimal value 4 alternate ground 1 J 39200 Supply wire 4 Measure the voltage with voltmeter J 39200 Ignition key must be in the ON posi tion Measuring points Optimal value...

Страница 139: ...se ries between connector EA and the EECU Connect jumper harness J 43233 in series between connector EB and the EECU Measuring points Optimal value EA13 EA5 3 0 V 20 C 68 F EA13 EA5 2 0 V 40 C 104 F N...

Страница 140: ...Group 28 Troubleshooting Fuel Temperature Sensor Tempera ture Resistance Chart W2002742 138...

Страница 141: ...to voltage or open circuit Conditions for fault code The voltage on EA1 exceeds 4 95 V Possible cause Short circuit to voltage signal wire Short circuit to voltage ground wire Break signal wire Break...

Страница 142: ...ter J 39200 Ignition key must be in the OFF posi tion Measuring points Optimal value 4 alternate ground 1 J 39200 Supply wire 4 Measure the voltage with voltmeter J 39200 Ignition key must be in the...

Страница 143: ...se ries between connector EA and the EECU Connect jumper harness J 43233 in series between connector EB and the EECU Measuring points Optimal value EA1 EA5 3 0 V 20 C 68 F EA1 EA5 0 4 V 100 C 212 F N...

Страница 144: ...Group 28 Troubleshooting Oil Temperature Sensor Tempera ture Resistance Chart W2002727 142...

Страница 145: ...the information link SAE J1587 Conditions for fault code PID 228 the message is not available on the infor mation link SAE J1587 Possible cause Fault in the information link SAE J1587 Error from the V...

Страница 146: ...Also check the VECU This fault code could be due to the fact that there is a fault in the VECU Check of Subsystem Check of the SAE J1587 Information link 1 Ignition key must be in the ON posi tion Co...

Страница 147: ...ot available SAE J1587 message Conditions for fault code PPID 86 the message is not available on the infor mation link SAE J1587 Possible cause Fault in the information link SAE J1587 Error from the V...

Страница 148: ...37 Also check the VECU This fault code could be due to the fact that there is a fault in the VECU Check of Subsystem Check of the SAE J1587 Information link 1 Ignition key must be in the ON posi tion...

Страница 149: ...de Poor through flow in the cooling system Worn coolant pump Fault in pressure cap expansion tank Fault in sensor Reaction from the EECU Fault code is set Power reduction in the first stage The engine...

Страница 150: ...points Optimal value 2 alternate ground 1 J 39200 Signal wire 3 Measure the resistance using DMM J 39200 Ignition key must be in the OFF posi tion Measuring points Optimal value 1 alternate ground 1 4...

Страница 151: ...es between connector EA and the EECU Connect jumper harness J 43233 in series between connector EB and the EECU 2 Measure the voltage using DMM J 39200 Ignition key must be in the ON posi tion Measuri...

Страница 152: ...t circuit to ground on EA33 Possible cause Short circuit to ground between the VCB solenoid valve and EECU Reaction from the EECU Fault code is set Yellow lamp is requested The output is switched off...

Страница 153: ...ire 4 Measure the voltage with voltmeter J 39200 Ignition key must be in the ON posi tion Measuring points Optimal value Supply wire al ternate ground B J 39200 Check of component Compression brake so...

Страница 154: ...tput switched off Short circuit to ground on EB36 Possible cause Short circuit to ground between solenoid valve and EECU Reaction from the EECU Fault code is set Yellow lamp is requested Noticeable ex...

Страница 155: ...wire 4 Measure the voltage with voltmeter J 39200 Ignition key must be in the ON posi tion Measuring points Optimal value 1 alternate ground B J 39200 Check of component EPG control PWM box 1 Disconne...

Страница 156: ...itched off Short circuit to ground on EB35 Possible cause Short circuit to ground between solenoid valve and EECU Reaction from the EECU Fault code is set Yellow lamp is requested Noticeable external...

Страница 157: ...he voltage with voltmeter J 39200 Ignition key must be in the ON posi tion Measuring points Optimal value 1 alternate ground B J 39200 Check of component D12B only EPG control PWM box 1 Note This proc...

Страница 158: ...icular injector bank is switched off Noticeable external symptom Yellow lamp lights up Low power output Uneven operation Abnormal noise 3 cylinder operation FMI 3 Short circuit to battery voltage or s...

Страница 159: ...the open circuit is on the particular injector s low side Reaction from the EECU Fault code is set Yellow lamp is requested One or three injectors are switched off Noticeable external symptom Yellow l...

Страница 160: ...1 Note An incorrect value below can also cause the component to fail therefore it is important to check the component if any of the values are in correct Wires 2 Connect breakout box J 41132 to the E...

Страница 161: ...s for each respective injector Measure the resistance with ohmme ter J 39200 on the injector Ignition key must be in the OFF posi tion Measuring points Optimal value High side low side 1 5 2 0 High si...

Страница 162: ...nditions for fault code Output switched off Short circuit to ground on EB34 Possible cause Short circuit to ground on wire between solenoid valve and EECU Reaction from the EECU Fault code is set Yell...

Страница 163: ...te ground 190 k J 39200 Supply wire 4 Measure the voltage with voltmeter J 39200 Ignition key must be in the ON posi tion Measuring points Optimal value 1 alternate ground B J 39200 Check of component...

Страница 164: ...timing sleeve cannot be checked Output for timing sleeve and rack drive are switched off Noticeable external symptom Red lamp lights up The engine stops or does not start FMI 4 Short circuit to groun...

Страница 165: ...Red lamp is requested Output for timing sleeve and rack drive are switched off Noticeable external symptom Red lamp lights up The engine stops or does not start FMI 8 Current too high to timing sleeve...

Страница 166: ...of the values are in correct 2 Disconnect the connector to the timing sleeve 7 pin connector on the rear of the injection pump Take measure ments on the wiring harness connector only Ground wire 3 Mea...

Страница 167: ...ction from the EECU Fault code is set Yellow lamp is requested The EECU uses engine timing sensor signal in stead if this is also incorrect the engine stops Noticeable external symptom Yellow lamp lig...

Страница 168: ...sensor Install breakout harness 9998534 to the wiring har ness end only 9998534 Ground wire 3 Measure the resistance with ohmme ter J 39200 Ignition key must be in the OFF posi tion Measuring points O...

Страница 169: ...tion is carried out Missing signal Possible cause Loose connection sensor Open circuit in one of the wires Short circuit to ground on any of the wires Short circuit to battery voltage on any of the wi...

Страница 170: ...nsor Install breakout harness 9998534 to the wiring harness end only 9998534 Ground wire 3 Measure the resistance with ohmme ter J 39200 Ignition key must be in the OFF posi tion Measuring points Opti...

Страница 171: ...to voltage or permanent loss of signal Conditions for fault code Signal is not available Possible cause Short circuit to voltage positive wire Short circuit to voltage negative wire Short circuit to...

Страница 172: ...tall breakout harness 9998534 to the wiring har ness end only 9998534 Ground wire 3 Measure the resistance with ohmme ter J 39200 Ignition key must be in the OFF posi tion Measuring points Optimal val...

Страница 173: ...p is requested EECU connection for power and ground sides is switched off Noticeable external symptom Red lamp lights up The engine stops or does not start FMI 4 Short circuit to ground rack drive gro...

Страница 174: ...s requested EECU connection for power and ground sides is switched off Noticeable external symptom Red lamp lights up The engine stops or does not start FMI 8 Current too high to rack drive under long...

Страница 175: ...nnector to the rack drive 7 pin connector on the rear of the injection pump Take measure ments on the wiring harness connector only Ground wire 3 Measure the resistance with ohmme ter J 39200 Ignition...

Страница 176: ...n from the EECU Fault code is set Red lamp is requested Output for rack drive is switched off Noticeable external symptom Red lamp lights up The engine stops or does not start FMI 13 Sensor values out...

Страница 177: ...ector to the rack drive 7 pin connector on the rear of the injection pump Take measure ments on the wiring harness connector only Reference wire 3 Measure the resistance with ohmme ter J 39200 Ignitio...

Страница 178: ...ssible cause Short circuit to ground between solenoid valve and EECU Reaction from the EECU Fault code is set Yellow lamp is requested Output is switched off Noticeable external symptom Yellow lamp li...

Страница 179: ...on Measuring points Optimal value B alternate ground 200 k J 39200 Supply wire 4 Measure the voltage with voltmeter J 39200 Ignition key must be in the ON posi tion Measuring points Optimal value A al...

Страница 180: ...ground positive wire Open circuit in positive wire Open circuit in negative wire An incorrectly installed sensor incorrect distance to pump speed sensor wheel Reversed polarity on the sensor Faulty se...

Страница 181: ...ll breakout harness 9998534 to the wiring har ness end only 9998534 Ground wire 3 Measure the resistance with ohmme ter J 39200 Ignition key must be in the OFF posi tion Measuring points Optimal value...

Страница 182: ...let temperature High current consumption Discharged battery FMI 4 Short circuit to ground Conditions for fault code Preheating requested Short circuit to ground on EB5 Possible cause Short circuit to...

Страница 183: ...the OFF posi tion Measuring points Optimal value Sense wire al ternate ground 1 4 k J 39200 Check of component Preheating 1 element 1 Remove the fuse and support red plastic part between the pre heat...

Страница 184: ...igh inlet temperature High current consumption Discharged battery FMI 4 Short circuit to ground Conditions for fault code Preheating requested Short circuit to ground on EB16 Possible cause Short circ...

Страница 185: ...be in the OFF posi tion Measuring points Optimal value Sense wire al ternate ground 1 4 k J 39200 Check of component Preheating 2 element 1 Remove the fuse and support red plastic part between pre he...

Страница 186: ...low lamp is requested Noticeable external symptom Yellow lamp lights up The limp home function does not function FMI 4 Short circuit to ground or open circuit Conditions for fault code Accelerator ped...

Страница 187: ...information refer to VNL VNM Elec trical Schematics Group 37 Check of Subsystem Buffered idle validation switch 1 Ignition key must be in the ON posi tion Connect breakout box J 41132 in se ries betwe...

Страница 188: ...es not function Conditions for fault code Communications link SAE J1939 does not function Possible cause Wires in communications link SAE J1939 short circuited to each other Temporary malfunction in h...

Страница 189: ...No contact with VECU Reaction from the EECU Fault code is set Yellow lamp is requested Information is read sent instead on the information link SAE J1587 Noticeable external symptom Yellow lamp lights...

Страница 190: ...sure sensor fault code on oil pressure sensor and boost pres sure sensor Low power output Oil pressure gauge and boost pressure gauge show 0 in the instrument FMI 4 Short circuit to ground Conditions...

Страница 191: ...tall breakout harness 9998534 to the wiring harness end only 9998534 Ground wire 3 Measure the resistance with ohmme ter J 39200 Ignition key must be in the OFF posi tion Measuring points Optimal valu...

Страница 192: ...ause Error when programming Internal fault in the EECU Reaction from the EECU Fault code is set Red lamp is requested Noticeable external symptom Red lamp lights up The engine does not start FMI 12 In...

Страница 193: ...the EECU Possible cause Internal fault in the EECU Reaction from the EECU Fault code is set Yellow lamp is requested Noticeable external symptom Yellow lamp lights up Information from the EECU is not...

Страница 194: ...rogramming Reaction from the EECU Fault code is set Red lamp is requested Noticeable external symptom Red lamp lights up The engine does not start FMI 12 Incorrect checksum in data set memory Conditio...

Страница 195: ...EECU Reaction from the EECU Fault code is set Red lamp is requested Noticeable external symptom Red lamp lights up The engine does not start FMI 9 Internal fault in the EECU Conditions for fault code...

Страница 196: ...de is set Red lamp is requested Noticeable external symptom Red lamp lights up The engine does not start FMI 13 Internal fault in the EECU Conditions for fault code Incorrect self test in the EECU Pos...

Страница 197: ...al Switches Supply 1 3 4 MID 144 PPID 70 Pedal Switches Supply page 211 MID 144 PPID 71 Cruise Control and Engine Brake Supply Switch 1 3 4 MID 144 PPID 71 Cruise Control and En gine Brake Supply Swit...

Страница 198: ...50 SAE J1587 1708 Information Link 3 4 MID 144 SID 250 SAE J1587 1708 Information Link page 238 MID 144 SID 253 Data Set Memory EEPROM 3 4 MID 144 SID 253 Data Set Memory EEPROM page 240 MID144 PSID 3...

Страница 199: ...rprets this as a fault and an fault code is set Possible cause Open circuit in ground wire Signal wire short circuited to higher voltage Faulty second accelerator position sensor Faulty idle validatio...

Страница 200: ...e breakout harness pins and measure the resis tance Measuring points Expected value Pin E alternate ground 1 J 39200 Supply wire 4 Turn the ignition key to the ON posi tion 5 Connect a voltmeter to th...

Страница 201: ...mal value PB23 Alternate ground 1 J 39200 Supply wire 5 Ignition key in ON position 6 Connect a voltmeter to the 60 pin breakout box and measure the voltage Measuring points Optimal value PB26 PB23 5...

Страница 202: ...FMI 5 Abnormally low current or open circuit Conditions for fault code If the VECU registers a current lower than 90 A on any of the signal wires from the speed sensor the VECU interprets this as a f...

Страница 203: ...the adapter 9998511 J 43340 Signal wire 3 Turn the ignition key to the OFF posi tion 4 Connect an ohmmeter to the 60 pin breakout box and measure resistance Measuring points Expected value Transmissi...

Страница 204: ...s and chock the wheels can result in the vehicle falling which can cause serious injury or death to anyone un der or near the vehicle Chock the front wheels Release the parking brake and jack up one r...

Страница 205: ...Open circuit in ground wire Open circuit in supply wire Signal wire short circuited to higher voltage Faulty accelerator position sensor Faulty idle validation switch 1 Switch resistance and oxidatio...

Страница 206: ...J 41133 Ground wire 2 Turn the ignition key to the OFF posi tion 3 Using ohmmeter J 39200 measure re sistance from pin E 5 pin harness to alternate ground Measuring points Expected value Pin E alterna...

Страница 207: ...OFF posi tion 4 Using an ohmmeter at the 60 pin breakout box measure the resistance between pin PB22 and the alternate ground Measuring points Expected value PB22 alternate ground 1 J 39200 Supply Wir...

Страница 208: ...Data Link instrument cluster graphics display used on WG AC and WX series vehicles can display a limited number of text messages For infor mation see Data Link Instrumentation Volvo Service Publicatio...

Страница 209: ...icles can display a limited number of text messages For infor mation see Data Link Instrumentation Volvo Service Publication PV776 381 620SM VCADS Pro Display Buffered idle validation switch Fault Cod...

Страница 210: ...pin breakout box J 41132 between the EECU s EB lower connector and the wiring harness J 41132 Signal Wire 4 Turn the ignition key to the ON posi tion 5 Connect voltmeter J 39200 to the 36 pin breakout...

Страница 211: ...1 with overlay J 43340 to the adapter 9998551 J 43340 Signal Wire 3 Turn the ignition key to the ON posi tion 4 Connect voltmeter J 39200 to the 60 pin breakout box and measure the voltage Measuring p...

Страница 212: ...strumentation Volvo Service Publication PV776 381 620SM VCADS Pro Display Pedal switches supply Fault Codes FMI 4 Abnormally low voltage Conditions for fault code If the VECU registers a voltage lower...

Страница 213: ...t the brake pedal switch two pin Common 558A wire and Normal Open 567B wire 3 Disconnect the connector at the clutch pedal switch two pin Normal Open 571 wire and Common 558B wire Supply wire idle val...

Страница 214: ...e connector at the accel erator pedal Install 5 pin breakout harness J 41133 to the accelerator pedal harness end only J 41133 2 Turn the ignition key to the OFF posi tion 3 Connect an ohmmeter to the...

Страница 215: ...voltage Measuring points Expected value 0 V accelerator pedal at idle PA23 PA12 B full acceleration J 39200 Signal wire brake pedal switch 7 Turn the ignition key to the ON posi tion 8 Connect a voltm...

Страница 216: ...Volvo Service Publication PV776 381 620SM VCADS Pro Display Cruise control and retarder switch supply Fault Codes FMI 4 Abnormally low voltage Conditions for fault code If the VECU registers a voltage...

Страница 217: ...ctor at the switch for the cruise control Measurements should be taken only on the wiring harness connector end 2 Disconnect the connector at the switch for the exhaust brake if the vehicle is equippe...

Страница 218: ...VNL VNM Electrical Schematics Group 37 Check of component Cruise control switch Exhaust brake switch Idle validation switch 3 Note Faults in the component can be caused by faults in the wiring harnes...

Страница 219: ...ac celerator pedal harness end only J 41133 8 Turn the ignition key to the OFF posi tion 9 Connect an ohmmeter to the switch pins and measure the resistance Measuring points Expected value open circui...

Страница 220: ...ltmeter to the 60 pin breakout box and measure the voltage Measuring points Expected value 0 V exhaust brake switch OFF B exhaust brake switch position 1 EPG PA21 PA12 B exhaust brake switch position...

Страница 221: ...code If the VECU registers a voltage higher than 5 5 V on the supply wire the VECU interprets this as a fault and an fault code is set Possible cause Open circuit in ground wire Supply wire short circ...

Страница 222: ...rom pin E 5 pin har ness to the alternate ground Measuring points Expected value Pin E alternate ground 1 J 39200 Supply wire 4 Turn the ignition key to the ON posi tion 5 Connect a voltmeter to the c...

Страница 223: ...mal value PB22 Alternate ground 1 J 39200 Supply wire 5 Ignition key in ON position 6 Connect a voltmeter to the 60 pin breakout box and measure the voltage from pin PB10 to PB22 Measuring points Opti...

Страница 224: ...h voltage Conditions for fault code If the VECU registers a voltage higher than 5 5 V on the supply wire the VECU interprets this as a fault and an fault code is set Possible cause Open circuit in gro...

Страница 225: ...rom pin E 5 pin har ness to the alternate ground Measuring points Expected value Pin E alternate ground 1 J 39200 Supply wire 4 Turn the ignition key to the ON posi tion 5 Connect a voltmeter to the c...

Страница 226: ...al value PB23 Alternate ground 1 J 39200 Supply wire 5 Ignition key in ON position 6 Connect a voltmeter to the 60 pin breakout box and measure the voltage from pin PB26 to PB23 Measuring points Optim...

Страница 227: ...the inhibitor is to engage at approx 40 km h 25 mph Possible cause The wire between the solenoid valve and the VECU short circuited to battery voltage B Faulty solenoid valve Reaction from the VECU Fa...

Страница 228: ...in breakout harness J 42472 to the wiring harness end only J 42472 Ground wire 2 Turn the ignition key to the OFF posi tion 3 Connect an ohmmeter and measure the resistance Measuring points Expected v...

Страница 229: ...nd wiring harness connectors PA PB J 43234 2 Connect 60 pin breakout box 9998551 with overlay J 43340 to the adapter 9998551 J 43340 3 Turn the ignition key to the ON posi tion 4 Connect a voltmeter t...

Страница 230: ...tion PV776 381 620SM VCADS Pro Display Idle validation switch Fault Codes FMI 7 Incorrect response from mechanical system Conditions for fault code If the signal from the idle validation switch is not...

Страница 231: ...J 41133 Supply wire 2 Turn the ignition key to the ON posi tion 3 Connect a voltmeter to the breakout harness pins and measure the voltage Measuring points Expected value Pin D alternate ground B J 39...

Страница 232: ...43340 to the adapter 9998551 J 43340 Signal wire 3 Turn the ignition key to the ON posi tion 4 Connect a voltmeter to the 60 pin breakout box and measure the voltage Measuring points Expected value 0...

Страница 233: ...ion PV776 381 620SM VCADS Pro Display SAE J1939 data link Fault Codes FMI 2 Intermittent or incorrect data Conditions for fault code If the VECU does not receive confirmation for the messages on the J...

Страница 234: ...ing an ohmmeter back probe con nector PC Green 5 pin at connectors PC4 and PC5 with the connector in stalled in the VECU Measuring points Expected value PC4 PC5 60 10 J 39200 3 Turn the ignition key t...

Страница 235: ...es vehicles can display a limited number of text messages For infor mation see Data Link Instrumentation Volvo Service Publication PV776 381 620SM VCADS Pro Display Programm memory Fault Codes FMI 2 I...

Страница 236: ...Instrumentation Volvo Service Publication PV776 381 620SM VCADS Pro Display CC set switch Fault Codes FMI 7 Incorrect response from mechanical system Conditions for fault code If the VECU receives th...

Страница 237: ...to the ON posi tion 3 Connect a voltmeter to the connector and measure the voltage Measuring points Expected value Wiring harness con nector A alternate ground B J 39200 Signal wire SET 4 Turn the ign...

Страница 238: ...and SET active Cruise control switch connectors E G open circuit RESUME active and SET active J 39200 Check of Subsystem 1 Disconnect the VECU and install adapter J 43234 between the VECU and wiring h...

Страница 239: ...lay VN SAE J1708 data link Data Link Instrument Cluster WG AC WX The Data Link instrument cluster graphics display used on WG AC and WX series vehicles can display a limited number of text messages Fo...

Страница 240: ...on N A No test currently available Check of Subsystem 1 Turn the ignition key to the ON posi tion 2 Using a voltmeter back the probe connector PC Green 5 pin at con nectors PC1 and PC2 with the connec...

Страница 241: ...Codes FMI 2 Intermittent or incorrect data Conditions for fault code If the VECU receives an error in calculating the checksum in the calibration memory the VECU in terprets this as a fault and an fau...

Страница 242: ...ation Volvo Service Publication PV776 381 620SM VCADS Pro Display Idle validation switch 3 Fault Codes FMI 7 Incorrect response from mechanical system Conditions for fault code If the signal from the...

Страница 243: ...ss end only J 41133 Supply wire 2 Turn the ignition key to the ON posi tion 3 Connect a voltmeter to the connector and measure the voltage Measuring points Expected value Pin D alternate ground B J 39...

Страница 244: ...43340 to the adapter 9998551 J 43340 Signal wire 3 Turn the ignition key to the ON posi tion 4 Connect a voltmeter to the 60 pin breakout box and measure the voltage Measuring points Expected value 0...

Страница 245: ...the control unit and fold away the connector for the control unit 5 T2014052 Remove the bolts for the cooling coil on the control unit Note Do not release the fuel lines on the cooling coil 6 Remove t...

Страница 246: ...under the control unit 12 Switch on the power Note When starting the engine with cab up make sure that a gear is not engaged The parking brake should be applied 13 Conduct a function check Check that...

Страница 247: ...r opinions and experience when using this manual would be greatly appreciated If you have any comments or suggestions make a copy of this page write down your comments and send them to us either via t...

Страница 248: ......

Страница 249: ...Operation Numbers 2841 03 02 01 Engine ECU Replacement 243...

Страница 250: ...America Inc P O Box 26115 Greensboro NC 27402 6115 Volvo Trucks Canada Ltd 6490 Vipond Drive Mississauga Ontario L5T 1W8 http www volvotrucks volvo com PV776 TSP144528 1000 06 2001 Volvo Trucks North...

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