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PINPOINT TEST I: INCORRECT/ERRATIC DIRECTION OF AIR FLOW FROM OUTLET — EATC

Does the vacuum in any hose drop exceed 3.37 kPa (1 in-Hg) per minute?

H13 CHECK THE VACUUM CONTROL MOTOR

Disconnect: Vacuum Control Motor.

Connect a vacuum pump to the affected vacuum control motor. Apply 51 kPa (15 in-Hg) of vacuum.

Does the vacuum drop exceed 1.68 kPa (0.5 in-Hg) per minute?

Yes

INSTALL a new vacuum control motor
(18A318). REFER to

Section 412-04

. TEST

the system for normal operation.

REPAIR or INSTALL a new vacuum
harness (19C827). TEST the system for
normal operation.

H14 CHECK THE VACUUM CONTROL MOTOR HOSES FOR BLOCKAGE

Disconnect: Vacuum Control Motors.

Connect a vacuum pump to each hose and try to pull a vacuum. If the vacuum pump can pull and hold a vacuum, the hose is
plugged. If the vacuum pump pulls a vacuum that slowly decays, the hose is restricted.

Is the hose plugged or restricted?

Yes

REPAIR or INSTALL a new vacuum
harness (19C827). TEST the system for
normal operation.

GO to

H15

H15 CHECK THE VACUUM CONTROL MOTOR INSTALLATION

Check the attachment of the vacuum control motor arm to the damper door.

Is the vacuum control motor arm attached to the door or door crank arm?

Yes

REPAIR the damper door. TEST the
system for normal operation.

CONNECT the vacuum control motor arm
to the door crank arm. TEST the system for
normal operation.

Test Step

Result / Action to Take

I1 CHECK THE AIR FLOW IN EACH SETTING

Ignition ON.

With the engine running, check the air flow in each manual override setting on the EATC
module during engine idle and under acceleration.

Is the air flow correct in each manual override setting?

Yes

The system is operating normally.

If the air flow is from the defrost outlet only in all settings, GO to

. If the air flow

is incorrect in one setting only, NOTE the non-functional setting. GO to

I10

. If the

air flow is incorrect in MAX only, GO to

I14

I2 CHECK FOR VACUUM AT THE CHECK VALVE

Disconnect the vacuum check valve vacuum source line and connect the vacuum pump.

Yes

GO to

REPAIR or INSTALL a new check valve vacuum source line. TEST the system for
normal operation.

Page 23 of 47

2003 Taurus/Sable Workshop Manual

11/22/2011

http://www.fordtechservice.dealerconnection.com/pubs/content/~WS3H/~MUS~LEN/19/...

Содержание 2003 Taurus

Страница 1: ...equivalent scan tool Rotunda 73 III Automotive Meter 105 R0057 or equivalent R134a Manifold Gauge Set 176 R032A or equivalent Vacuum Pump Kit 416 D002 D95L 7559 A or equivalent Connector Refrigerant...

Страница 2: ...llen filter optional 13 18A318 Vacuum control motor air inlet doors 14 Recirculation air inlet 15 19805 Blower motor 16 19860 Evaporator core 17 Temperature blend door full heat position 18 18476 Heat...

Страница 3: ...Color Function Function Selector Switch Position MAX A C A C PANEL OFF PNL FLR FLR FLR DEF DEF 1 White Outside recircu lated air V NV NV V NV NV NV NV 2 Red Full floor NV NV NV V NV V NV NV 3 Black So...

Страница 4: ...n air inlet 15 19805 Blower motor 16 19860 Evaporator core 17 Temperature blend door full heat position 18 18476 Heater core 19 A C evaporator case damper door full heat position 20 Panel floor door f...

Страница 5: ...retrieved go to the SYMPTOM CHART to continue the diagnostics 9 If the RCC module cannot be accessed by the scan tool go to Pinpoint Test I Remote Climate Control Module Self Test The remote climate c...

Страница 6: ...adings by 5 to obtain the Average Center Vent Temperature DTC Description Action P1436 A C Evaporator Air Temperature Sensor Circuit Low REFER to the Powertrain Control Emissions Diagnosis PC ED manua...

Страница 7: ...inding stuck Vacuum line kinked pinched Vacuum control motor A C vacuum check valve 19A563 A C vacuum reservoir tank 19A566 Vacuum control motor actuator arm not connected to the door lever GO to Pinp...

Страница 8: ...ntrol module REPAIR circuit 385 WH RD or circuit 729 RD WH for an open If okay INSTALL a new remote climate control module The temperature display will not switch between Celsius and Fahrenheit EATC I...

Страница 9: ...end Door Actuator C289 Measure the resistance between RCC module C228 pin 21 circuit 249 DB LG and ground Measure the resistance between RCC module C228 pin 22 circuit 250 OG and ground Are the resist...

Страница 10: ...sistance between RCC module C228 pin 5 circuit 436 RD LG and the temperature blend door actuator C289 pin 6 circuit 436 RD LG Measure the resistance between RCC module C228 pin 20 circuit 438 RD WH an...

Страница 11: ...E LG Is the resistance greater than 10 000 ohms Yes INSTALL a new temperature blend door actuator 19E616 REFER to Section 412 04 TEST the system for normal operation No REPAIR circuits 438 RD WH and c...

Страница 12: ...mal operation No INSPECT for a broken door or linkage If no condition is found INSTALL a new RCC module REFER to Section 412 04 TEST the system for normal operation Test Step Result Action to Take B1...

Страница 13: ...normal operation No REPAIR circuit 470 PK BK for an open TEST the system for normal operation B5 CHECK CIRCUIT 790 WH OG FOR A SHORT TO CIRCUIT 470 PK BK Ignition OFF Disconnect RCC Module C228 Measur...

Страница 14: ...DTC 1257 GO to C5 C3 CHECK CIRCUIT 788 RD OG FOR AN OPEN Ignition OFF Disconnect RCC Module C228 Measure the resistance between the RCC module C228 pin 7 circuit 788 RD OG and the ambient temperature...

Страница 15: ...stance greater than 0 ohms Yes GO to D2 No INSTALL a new solar radiation sensor and bracket TEST the system for normal operation D2 CHECK THE REMOTE CLIMATE CONTROL MODULE OUTPUT VOLTAGE Ignition ON P...

Страница 16: ...it 468 BN for a short to circuit 398 BK YE TEST the system for normal operation D6 CHECK CIRCUIT 468 BN FOR A SHORT TO GROUND Measure the resistance between the solar radiation sensor C287 pin 1 circu...

Страница 17: ...n 5 ohms Yes GO to E4 No REPAIR circuit 833 TN CLEAR the DTCs REPEAT the self test E4 CHECK CIRCUIT 832 LB PK FOR SHORT TO GROUND Measure the resistance between the ICP C2009 pin 13 circuit 832 LB PK...

Страница 18: ...Ignition OFF Disconnect Remote Climate Control Module C228 Measure the resistance between the remote climate control RCC module C228 pin 8 circuit 570 BK WH and ground Is the resistance less than 5 oh...

Страница 19: ...f the blower motor is inoperative GO to Pinpoint Test O If the blower motor operates continuously in high speed GO to Pinpoint Test R If the blower motor is inoperative only in some speeds GO to Pinpo...

Страница 20: ...l operation Test Step Result Action to Take H1 CHECK THE AIR FLOW IN EACH SETTING Ignition ON With the engine running set the blower motor speed to maximum Check the air flow in each function selector...

Страница 21: ...HE VACUUM RESERVOIR LINE FOR LEAKS Plug the vacuum reservoir line at the vacuum reservoir connection Leak test the vacuum reservoir line using the vacuum pump Does the vacuum reservoir line leak Yes R...

Страница 22: ...and try to pull a vacuum in each function selector switch position If the vacuum pump can pull and hold a vacuum the switch is plugged If the vacuum pump pulls a vacuum that slowly decays the hose is...

Страница 23: ...NSTALLATION Check the attachment of the vacuum control motor arm to the damper door Is the vacuum control motor arm attached to the door or door crank arm Yes REPAIR the damper door TEST the system fo...

Страница 24: ...alve Yes GO to I5 No INSTALL a new vacuum check valve TEST the system for normal operation I5 CHECK THE VACUUM RESERVOIR LINE FOR BLOCKAGE Disconnect the vacuum reservoir line at the vacuum reservoir...

Страница 25: ...dule vacuum source line at the EATC module connection Leak test the EATC module vacuum source line using the vacuum pump Does the EATC module vacuum source line leak Yes REPAIR or INSTALL a new EATC m...

Страница 26: ...OTOR LINE FOR BLOCKAGE Ignition OFF Disconnect the air inlet door vacuum control motor vacuum connector Disconnect the EATC module vacuum connector and attempt to pull a vacuum on the RECIRC vacuum co...

Страница 27: ...se serious burns if the system is working correctly Allow the engine to reach normal operating temperature Feel the heater core inlet hose Is the heater core inlet hose too hot to handle Yes GO to J4...

Страница 28: ...following diagnostic mode on the scan tool PCM PID WAC Does the PCM PID WAC read ON Yes REFER to the Powertrain Control Emissions Diagnosis PC ED manual No GO to K5 K5 CHECK THE PID ACCS WITH THE A C...

Страница 29: ...een the RCC C228 pin 13 circuit 348 VT and the low charge switch C130 pin 1 circuit 348 VT Is the resistance less than 5 ohms Yes INSTALL a new RCC module REFER to Section 412 04 TEST the system for n...

Страница 30: ...voltage between the A C compressor clutch field coil C100 circuit 347 BK YE and ground Is the voltage greater than 10 volts Yes GO to K17 No GO to K18 K17 CHECK THE GROUND AT THE A C COMPRESSOR CLUTC...

Страница 31: ...o INSTALL a new A C compressor clutch field coil REFER to Section 412 03 TEST the system for normal operation K21 CHECK THE WAC OUTPUT FROM THE PCM Ignition ON With the engine running measure the resi...

Страница 32: ...ion Selector Switch C294b or RCC module C228 Ignition ON Measure the voltage between the low charge switch C130 pin 1 circuit 348 VT and ground Is the voltage greater than 10 volts Yes REPAIR circuit...

Страница 33: ...SOR CLUTCH AIR GAP Ignition OFF Measure the A C compressor clutch air gap at three equally spaced locations between the clutch hub and the A C compressor clutch pulley Is the A C compressor clutch air...

Страница 34: ...438 RD WH Is the resistance less than 5 ohms Yes REPAIR circuits 436 RD LG and 438 RD WH for a short together TEST the system for normal operation No INSTALL a new temperature control potentiometer RE...

Страница 35: ...m for normal operation No INSTALL a new temperature control potentiometer REFER to Section 412 04 TEST the system for normal operation M9 CHECK CIRCUITS 436 RD LG AND 437 YE LG FOR A SHORT TO GROUND D...

Страница 36: ...e system for normal operation N2 CHECK FOR VOLTAGE TO THE BLOWER MOTOR Ignition ON Place the function selector switch in the floor position Measure the voltage between the blower motor C2004 circuit 3...

Страница 37: ...operation N7 CHECK CIRCUIT 57 BK Measure the resistance between the function selector switch C294b pin 3 circuit 57 BK and ground Is the resistance less than 5 ohms Yes INSTALL a new function selector...

Страница 38: ...Measure the voltage between the blower motor relay socket pin 87 and ground Is the voltage greater than 10 volts Yes GO to O3 No REPAIR the affected circuit TEST the system for normal operation O3 CH...

Страница 39: ...ion O7 BYPASS THE BLOWER MOTOR RELAY Ignition OFF Disconnect Blower Motor Speed Control C271b Ignition ON Connect a fused 40A 12 gauge jumper lead between the blower motor speed control C271a pin 1 ci...

Страница 40: ...71b Connect Blower Motor Speed Control C271a Ignition ON Press the MAX A C manual override button and adjust the blower speed to maximum Measure the voltage between the blower motor speed control C271...

Страница 41: ...293 pin 3 circuit 57 BK pin 3 circuit 57 BK pin 4 circuit 261 OG BK pin 2 circuit 261 OG BK pin 1 circuit 754 LG WH pin 1 circuit 754 LG WH pin 2 circuit 752 YE RD pin 4 circuit 752 YE RD Yes GO to P3...

Страница 42: ...ALL a new blower motor switch 18578 TEST the system for normal operation Test Step Result Action to Take R1 CHECK BLOWER OPERATION Ignition ON Press the override button for MAX A C operation and rotat...

Страница 43: ...ance less than 5 ohms Yes INSTALL a new RCC module TEST the system for normal operation No REPAIR circuit 776 OG BK for an open TEST the system for normal operation Test Step Result Action to Take S1...

Страница 44: ...ction to Take U1 CHECK THE BLOWER OPERATION Ignition ON Press the MAX A C button and rotate the blower motor speed control to HI Does the blower speed increase as you rotate the blower motor speed ove...

Страница 45: ...damage the heater core Check the integrity of the heater water hose clamps Heater Core Plugged Did the voltage continually decrease without discontinuities U3 CHECK CIRCUIT 776 OG BK FOR A SHORT TO G...

Страница 46: ...If the heater water hoses do not leak remove the heater core from the vehicle and carry out the bench test Heater Core Bench Test 1 Remove the heater core from the vehicle Refer to Section 412 02 2 Dr...

Страница 47: ...n for an additional 30 minutes to remove any remaining refrigerant from the oil in the evaporator core or condenser core Then recheck for loss of vacuum If a very small leak is suspected allow the sys...

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