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Engine Cooling Fan - Eec V: Diagnosis Lincoln LS I

Cooling Fan 26 illustrations ~12102 words

TROUBLE SHOOTING

For cooling fan diagnosis, go to TEST KF: FAN CONTROL (FC) RELAY . DTCs P1474 and P1479 will set if a cooling fan control circuit failure is present. See step 1) under TEST KF test procedure.

On Escort and Mustang, also refer to TEST X: CONSTANT CONTROL RELAY MODULE (CCRM) . CCRM interfaces with the EEC-V system to provide control for cooling fan and A/C clutch. CCRM also contains EEC-V power relay, which provides battery power (VPWR) to the PCM and EEC-V system. Perform this test only when instructed by QUICK TEST or if directed by a system test.

DIAGNOSTIC FORMATS

QUICK TEST and SYSTEM TESTS are diagnostic formats used to test and service EEC-V system. QUICK TEST allows technician to identify problems and retrieve Diagnostic Trouble Codes (DTC). SYSTEM TESTS are used to check circuits, sensors and actuators.

Before starting any SYSTEM TEST, follow all steps under QUICK TEST to determine appropriate system test to perform. If vehicle passes QUICK TEST and no driveability symptoms or intermittent faults exist, EEC-V system is okay.

DIAGNOSTIC TROUBLE CODES

During QUICK TEST, 3 types of Diagnostic Trouble Codes (DTCs) are retrieved: KOEO, KOER and Continuous Memory DTCs. See QUICK TEST for self-test procedures. DTCs may be cleared from PCM memory after DTCs have been recorded or fault has been repaired. See CLEARING CODES . If fault is still present after clearing DTCs, fault will reset.

KOEO & KOER On-Demand Self-Test Codes

Record DTCs in order received. These DTCs indicate current faults in system and should be serviced in the same order it was set.

Note. If self-test will not activate or TOOL COMMUNICATION ERROR is received, go to TEST QA: UNABLE TO ACTIVATE SELF-TEST/SCP COMMUNICATION ERROR DTC NOT LISTED under SYSTEM TESTS in SELF-DIAGNOSTICS - EEC-V - GASOLINE article in ENGINE PERFORMANCE.

QUICK TEST

Note. If vehicle has an emission compliance failure symptom, go to EMISSIONS COMPLIANCE under SYMPTOMS in TROUBLE SHOOTING - NO CODES - EEC-V - GASOLINE article.

Quick Test is divided into 3 specialized test procedures that are functional tests of EEC-V system. All self-tests are completely menu driven using the New Generation Star (NGS) scan tool. The following procedures must be followed in sequence to avoid misdiagnosis

  1. «VISUAL CHECK»(ref-97365-S00962236752001050300000)
  2. «VEHICLE PREPARATION & EQUIPMENT HOOKUP»(ref-97365-S35294253792001050300000)
  3. «KEY ON ENGINE OFF (KOEO) ON-DEMAND SELF-TEST»(ref-97365-S18963679462001050300000)
  4. «KEY ON ENGINE RUNNING (KOER) ON-DEMAND SELF-TEST»(ref-97365-S28004042422001050300000)
  5. «CONTINUOUS MEMORY SELF-TEST»(ref-97365-S39733361532001050300000)

Complete QUICK TEST before performing any system tests. Record any DTCs retrieved. Service DTCs in the following order: KOEO DTCs, KOER DTCs and then Continuous Memory DTCs. After each service or repair procedure has been completed, always repeat QUICK TEST procedures to ensure all EEC-V systems are working properly and DTCs are no longer present.

Generic Scan Tool

Ensure scan tool meets or exceeds OBD-II standard. Follow scan tool manufacturer's operating instructions to hook up equipment and record DTCs.

New Generation STAR (NGS) Scan Tool

Turn ignition off. Ensure proper memory (EPROM) card is inserted into NGS scan tool. Connect service connectors of adapter cable to vehicle Data Link Connector (DLC) and NGS scan tool. (Scheme 15) Connect NGS scan tool power supply cable to power and go to KOEO ON-DEMAND SELF-TEST.

Scheme 15

Scheme 15: New Generation STAR (NGS) Scan Tool
Scheme 15: New Generation STAR (NGS) Scan Tool

Performing Self-Test

To perform self-test, turn ignition off. Ensure test equipment is properly attached. Program scan tool using the following steps

  1. Select VEHICLE & ENGINE SELECTION menu.
  2. Select NEW VEHICLE, YEAR & MODEL.
  3. Select DIAGNOSTIC DATA LINK.
  4. Select PCM-POWERTRAIN CONTROL MODULE.
  5. Select DIAGNOSTIC TEST MODE.
  6. Select KOEO ON-DEMAND SELF-TEST.
  7. Turn ignition on.
  8. Follow operating instructions from scan tool menu.
  9. Record DTCs and perform appropriate system test. After test is complete, cycle ignition switch before performing other self-tests or driving vehicle.

To perform self-test, turn ignition off. Ensure test equipment is properly attached. Program scan tool using the following steps

  1. Select VEHICLE & ENGINE SELECTION menu.
  2. Select NEW VEHICLE, YEAR & MODEL.
  3. Select DIAGNOSTIC DATA LINK.
  4. Select PCM-POWERTRAIN CONTROL MODULE.
  5. Select DIAGNOSTIC TEST MODE.
  6. Select KOER ON-DEMAND SELF-TEST.
  7. Start engine and allow to idle.
  8. Follow operating instructions from scan tool menu.
  9. Record DTCs and perform appropriate system test. After test is complete, cycle ignition switch before performing other self-tests or driving vehicle.

To perform self-test, turn ignition off. Ensure test equipment is properly attached. Program scan tool using the following steps

  1. Select VEHICLE & ENGINE SELECTION menu.
  2. Select NEW VEHICLE, YEAR & MODEL.
  3. Select DIAGNOSTIC DATA LINK.
  4. Select PCM-POWERTRAIN CONTROL MODULE.
  5. Select DIAGNOSTIC TEST MODE.
  6. Select RETRIEVE/CLEAR CONTINUOUS DTCs.
  7. Turn ignition on.
  8. Follow operating instructions from scan tool menu.
  9. Record DTCs and perform appropriate system test. After test is complete, cycle ignition switch before performing other self-tests or driving vehicle.

An injector circuit fault can result in unrelated DTCs being received from PCM. If engine idles rough or Continuous Memory DTCs are present, turn ignition on. Using scan tool, select INJxF PIDs from PID/DATA monitor menu. There is one INJxF PID available for each engine cylinder and the "x" indicates appropriate injector number (1-10). If any PID value indicates YES, an injector fault exists. Turn ignition off and disregard any DTCs that are present at this time. On natural gas models, go to TEST HA, step 60) under SYSTEM TESTS in SELF-DIAGNOSTICS - EEC-V - GASOLINE article in ENGINE PERFORMANCE. On all other models, go to TEST H, step 56) in SELF-DIAGNOSTICS - EEC-V - GASOLINE article in ENGINE PERFORMANCE. If all PID values indicate NO, service any DTCs that are present. After test is complete, cycle ignition switch before performing other self-tests or driving vehicle.

ON-BOARD SYSTEM READINESS (OSR) TEST MODE

All OBD-II scan tools should be able to display the OSR test. The OSR will display monitors on the vehicle and status of all monitors; complete or not complete. If not complete, the scan tool will display which monitor has not completed.

To enter OSR, turn ignition off. Ensure test equipment is properly attached. Program scan tool using the following steps

  1. Select VEHICLE & ENGINE SELECTION menu.
  2. Select NEW VEHICLE, YEAR & MODEL.
  3. Follow operating instructions from scan tool menu.
  4. Select GENERIC OBD-II FUNCTIONS. Press TEST button if monitors are not complete.
  5. Start engine and allow to idle.
  6. Select ON-BOARD SYSTEM READINESS.

OUTPUT TEST MODE

This mode allows a technician to energize and de-energize most of the system output actuators on command. After accessing OUTPUT TEST MODE, outputs and cooling fans can be turned on and off separately.

To access OUTPUT TEST MODE, turn ignition off. Ensure test equipment is properly attached. Program scan tool using the following steps

  1. Select VEHICLE & ENGINE SELECTION menu.
  2. Select NEW VEHICLE, YEAR & MODEL.
  3. Follow operating instructions from scan tool menu.
  4. Select DIAGNOSTIC DATA LINK.
  5. Select PCM-POWERTRAIN CONTROL MODULE.
  6. Select DIAGNOSTIC TEST MODE.
  7. Select ACTIVE COMMAND MODE.
  8. Select OUTPUT TEST MODE.
  9. Turn ignition on.
  10. Follow operating instructions from scan tool menu.
  11. Select START to turn outputs on.
  12. Select STOP to turn outputs off.
  13. Select either LOW SPEED FAN, HIGH SPEED FAN or ALL ON mode.

TEST KF: FAN CONTROL (FC) RELAY

Note. This article only tests the Fan Control (FC) relay and Constant Relay Control Module (CCRM) circuits. Other test may be referenced while performing electric cooling fan diagnosis. For complete Ford EEC-V system diagnosis, see SELF-DIAGNOSTICS - EEC-V - GASOLINE article in ENGINE PERFORMANCE.

Note. After each service or repair procedure has been completed, reconnect all components. Clear DTCs and repeat QUICK TEST procedures to ensure all EEC-V systems are working properly and DTCs are no longer present.

Diagnostic Aids

This system test is for Contour, Crown Victoria, Grand Marquis, Mystique, Sable, Taurus, Town Car and Windstar only. On all models, PCM determines engine cooling fan requirements and controls fan operation through Low Fan Control (LFC) and High Fan Control (HFC) circuits. HFC relay is normally open.

Perform this test only when instructed by QUICK TEST or directed by other test procedures. This test is only intended to diagnose

  1. Wiring Harness Circuits (LFC, HFC, B+, FAN PWR & VPWR) (Scheme 16)- (Scheme 20)
  2. Low Fan Control (LFC) Relay & High Fan Control (HFC) Relay
  3. Powertrain Control Module (PCM)

Scheme 16

Scheme 16
Scheme 16

Scheme 17

Scheme 17
Scheme 17

Scheme 18

Scheme 18
Scheme 18

Scheme 19

Scheme 19
Scheme 19

Scheme 20

Scheme 20
Scheme 20
  1. 1) DTC P1474 & P1479: Check For VPWR To Applicable Fan Control Relay DTC P1474 indicates a Low Speed Fan Control (LFC) primary circuit failure. DTC P1479 indicates a High Speed Fan Control (HFC) primary circuit failure. Possible causes are: Open Or Shorted LFC Or HFC Circuit Open VPWR Circuit To Fan Control Relay Faulty Fan Control Relay (LFC or HFC) Faulty PCM Turn ignition off. Disconnect appropriate fan control relay. Turn ignition on. Using a voltmeter, measure voltage between VPWR terminal at appropriate fan control relay wiring harness connector and negative battery terminal. (Scheme 16)- (Scheme 20). If voltage is greater than 10.5 volts, go to next step. If voltage is 10.5 volts or less, repair open in VPWR circuit to appropriate fan control relay.
  2. 2) Check For LFC Or HFC Circuit Cycling Turn ignition on, engine off. Using scan tool, access OUTPUT TEST MODE. See «OUTPUT TEST MODE»(ref-97365-S13339716962001050300000) in ADDITIONAL SYSTEM FUNCTIONS. Connect a test light between VPWR terminal and LFC or HFC terminal at appropriate fan control relay wiring harness connector. Using scan tool, command appropriate cooling fan speed on and off. If test light turns on and off, replace appropriate fan control relay. If test light does not turn on and off, turn ignition off, remove test light and go to next step.
  3. 3) Check LFC Or HFC Circuit For Short To Power Turn ignition off. Disconnect PCM connector(s). Inspect connector for loose, damaged or corroded terminals. Repair as necessary. Turn ignition on, engine off. Measure voltage between ground and LFC or HFC terminal at appropriate fan control relay wiring harness connector. If voltage is less than one volt, go to next step. If voltage is one volt or greater, repair LFC or HFC circuit for short to power.
  4. 4) Check LFC Or HFC Circuit For Short To Ground Turn ignition off. Disconnect scan tool from DLC. Measure resistance between ground and LFC or HFC terminal at appropriate fan control relay wiring harness connector. If resistance is greater than 10,000 ohms, go to next step. If resistance is 10,000 ohms or less, repair LFC or HFC circuit short to ground.
  5. 5) Check For Open LFC Or HFC Circuit Measure resistance between appropriate PCM connector terminal (LFC or HFC) and LFC or HFC terminal at appropriate fan control relay wiring harness connector. If resistance is less than 5 ohms, replace PCM. If resistance 5 ohms or greater, repair open in LFC or HFC circuit. NOTE: A break in step numbering sequence occurs at this point. Procedure skips from step 5) to step 10). No test procedures have been omitted.
  6. 10) Continuous Memory DTC P1474 Continuous Memory DTC P1474 indicates an LFC circuit failure occurred during vehicle operation. Possible causes are: Open VPWR Circuit To LFC Relay Open Or Shorted LFC Circuit Turn ignition off. Ensure A/C and defroster are off. Disconnect cooling fan motor connector (both fan motor connectors on models with 2 fans). Inspect connector(s) for loose, damaged or corroded terminals. Repair as necessary. Connect a test light between ground and power-to-low fan terminal at fan motor wiring harness connector (either connector on models with 2 fans). Turn ignition on, engine off. Using scan tool, access OUTPUT TEST MODE. See «OUTPUT TEST MODE»(ref-97365-S13339716962001050300000) in ADDITIONAL SYSTEM FUNCTIONS. Command low speed fan ON. Test light should be on. Observe test light for indication of fault (test light will turn off to indicate fault) while performing the following: Shake and bend LFC circuit between PCM and LFC relay. Shake and bend VPWR circuit to LFC relay. Lightly tap on LFC relay to simulate road shock. If fault is indicated, turn ignition off. Isolate and repair open or short to power in wiring harness. If fault is not indicated, go to next step.
  7. 11) Check LFC Circuit For Short To Ground Turn ignition on, engine off. Ensure cooling fan motor connector(s) are disconnected and test light is still connected. Using scan tool, command low speed fan OFF. Test light should be off. Observe test light for indication of fault (test light will turn on to indicate fault) while performing the following: Shake and bend LFC circuit between PCM and LFC relay. Lightly tap on LFC relay to simulate road shock. If fault is indicated, isolate and repair short to ground in wiring harness. If fault is not indicated, problem is intermittent. Go to TEST Z: INTERMITTENT in SELF-DIAGNOSTICS - EEC-V - GASOLINE article in ENGINE PERFORMANCE. NOTE: A break in step numbering sequence occurs at this point. Procedure skips from step 11) to step 20). No test procedures have been omitted.
  8. 20) Continuous Memory DTC P1479 Continuous Memory DTC P1479 indicates an HFC circuit failure has occurred during vehicle operation. Possible causes are: Open VPWR Circuit To HFC Relay Open Or Shorted HFC Circuit Turn ignition off. Ensure A/C and defroster are off. Disconnect cooling fan motor connector (both fan motor connectors on models with 2 fans). Inspect connector(s) for loose, damaged or corroded terminals. Repair as necessary. Connect a test light between ground and HIGH FAN PWR terminal at fan motor wiring harness connector (either connector on models with 2 fans). Turn ignition on, engine off. Using scan tool, access OUTPUT TEST MODE. See «OUTPUT TEST MODE»(ref-97365-S13339716962001050300000) in ADDITIONAL SYSTEM FUNCTIONS. Command high speed fan ON. Test light should be on. Observe test light for indication of fault (test light will turn off to indicate fault) while performing the following: Shake and bend HFC circuit between PCM and HFC relay. Shake and bend VPWR circuit to HFC relay. Lightly tap on HFC relay to simulate road shock. If fault is indicated, turn ignition off. Isolate and repair open or short to power in wiring harness. If fault is not indicated, go to next step.
  9. 21) Check HFC Circuit For Short To Ground Turn ignition on, engine off. Ensure cooling fan motor connector(s) are disconnected and test light is still installed. Using scan tool, command high speed fan OFF. Test light should be off. Observe test light for indication of fault (test light will turn on to indicate fault) while performing the following: Shake and bend HFC circuit between PCM and HFC relay. Lightly tap on HFC fan control relay to simulate road shock. If fault is indicated, turn ignition off. Isolate and repair short to ground in wiring harness. If fault is not indicated, problem is intermittent. Go to TEST Z: INTERMITTENT in SELF-DIAGNOSTICS - EEC-V - GASOLINE article in ENGINE PERFORMANCE. NOTE: A break in step numbering sequence occurs at this point. Procedure skips from step 21) to step 30). No test procedures have been omitted.
  10. 30) Electric Cooling Fan Problem (With No DTCs) Turn ignition on, engine off. Using scan tool, access OUTPUT TEST MODE. See «OUTPUT TEST MODE»(ref-97365-S13339716962001050300000) in ADDITIONAL SYSTEM FUNCTIONS. Command cooling fan ON and check fan operation. On models with 2-speed fan, check both fan speeds. Wait 20 seconds after commanding high fan speed on. Verify fan changes speed. On all models, if fan(s) functions properly, turn ignition off. Return to test that directed you here. If fan(s) do not function properly, go to step 50) (Contour, Cougar, Focus With A/C, Mystique and Windstar), go to step 41) (Focus Without A/C) or go to next step (all other models).
  11. 31) Determine Fan Operation During operational check of both fan speeds, if cooling fan(s) operated at one speed only, go to step 40). If cooling fan(s) did not operate at any speed, go to next step. On Sable and Taurus, if one cooling fan did not operate properly, but other fan operated properly, go to step 70).
  12. 32) Cooling Fan Will Not Operate At Any Speed Ensure ignition is on, scan tool is still connected and in «OUTPUT TEST MODE»(ref-97365-S13339716962001050300000), and cooling fan is commanded off. Disconnect cooling fan motor connector (both fan motor connectors on Sable and Taurus). Using scan tool, command high speed cooling fan ON. Using a voltmeter, measure voltage between ground and HIGH FAN PWR terminal at fan motor wiring harness connector (either connector on Sable and Taurus). If voltage is 10 volts or less, go to next step. If voltage is greater than 10 volts, go to step 37).
  13. 33) Check B+ Circuit To HFC & LFC Relays Turn ignition off. Ensure cooling fan motor connector(s) are disconnected. Disconnect HFC and LFC relays. Measure voltage between ground and B+ terminal at HFC and LFC relay wiring harness connectors. If both voltage readings are greater than 10.5 volts, go to next step. If any voltage reading is 10.5 volts or less, check for faulty B+ circuit (open circuit or blown fuse). If a fuse is blown, check for short to ground before replacing fuse. Repair as necessary. Recheck cooling fan operation.
  14. 34) Check For Open Circuit Measure resistance of HIGH FAN PWR circuit between HFC relay wiring harness connector and cooling fan motor wiring harness connector(s). Measure resistance of LOW FAN PWR circuit between LFC relay wiring harness connector and cooling fan wiring harness connector(s). If both resistance readings are less than 5 ohms, go to next step. If any resistance reading is 5 ohms or greater, locate and repair open circuit. Recheck cooling fan operation.
  15. 35) Check Power To Cooling Fan Motor Reconnect HFC and LFC relays. Ensure cooling fan motor connector(s) are disconnected. Turn ignition on, engine off. Using scan tool, access «OUTPUT TEST MODE»(ref-97365-S13339716962001050300000). Command low speed fan ON. Measure voltage between ground and LOW FAN PWR terminal at cooling fan motor wiring harness connector (either connector on Sable and Taurus). If voltage is greater than 10 volts, replace HFC relay and go to step 37). If voltage is 10 volts or less, go to step 75) and follow procedure for low speed fan inoperative. After repair, repeat step 75) and follow procedure for high speed fan inoperative. NOTE: A break in step numbering sequence occurs at this point. Procedure skips from step 35) to step 37). No test procedures have been omitted.
  16. 37) Check Cooling Fan Ground Circuit Turn ignition off. Disconnect scan tool from DLC. Measure resistance between ground and ground terminal at cooling fan motor wiring harness connector. If resistance is less than 5 ohms, replace cooling fan motor(s). If resistance is 5 ohms or greater, locate and repair open in ground circuit. Recheck cooling fan operation. NOTE: A break in step numbering sequence occurs at this point. Procedure skips from step 37) to step 40). No test procedures have been omitted.
  17. 40) Determine Which Fan Speed Is Operational If high speed fan was inoperative in step 31), go to step 46). If low speed fan was inoperative in step 31), go to next step.
  18. 41) Low Speed Fan Inoperative Turn ignition on, engine off. Ensure scan tool is still in «OUTPUT TEST MODE»(ref-97365-S13339716962001050300000) with fan commanded off. Disconnect cooling fan motor connector (both connectors on Sable and Taurus). Using scan tool, command low speed fan ON. Measure voltage between ground and LOW FAN PWR terminal at cooling fan motor wiring harness connector (either connector on Sable and Taurus). If voltage is greater than 10 volts, verify ground circuit to cooling fan motor. If ground is okay, replace fan motor and recheck cooling fan operation. If voltage is 10 volts or less, go to next step.
  19. 42) Check Voltage To LFC Relay Disconnect LFC relay. Measure voltage between ground and B+ terminal at LFC relay wiring harness connector. If voltage is greater than 10.5 volts, go to next step. If voltage is 10.5 volts or less, check for faulty B+ circuit (open circuit or blown fuse). If a fuse is blown, check for short to ground before replacing fuse. Repair as necessary. Recheck cooling fan operation.
  20. 43) Check For Open Circuit Measure resistance of LOW FAN PWR circuit between LFC relay wiring harness connector and cooling fan motor wiring harness connector(s). If resistance is less than 5 ohms, go to next step. If resistance is 5 ohms or greater, locate and repair open in LOW FAN PWR circuit. Recheck cooling fan operation. NOTE: A break in step numbering sequence occurs at this point. Procedure skips from step 43) to step 46). No test procedures have been omitted.
  21. 46) High Speed Fan Inoperative Ensure scan tool is connected and still in OUTPUT TEST MODE with fan commanded off. Disconnect cooling fan motor connector (both connectors on Sable and Taurus). Turn ignition on, engine off. Using scan tool, command high speed fan ON. Measure voltage between ground and HIGH FAN PWR terminal at cooling fan motor wiring harness connector. If voltage is greater than 10 volts, verify ground circuit to cooling fan motor. If ground is okay, replace fan motor and recheck cooling fan operation. If voltage is 10 volts or less, go to next step.
  22. 47) Check For Battery Voltage To HFC Relay Disconnect HFC relay. Measure voltage between ground and B+ terminal at HFC relay wiring harness connector. If voltage is greater than 10.5 volts, go to next step. If voltage is 10.5 volts or less, locate cause of no battery voltage to HFC relay (blown fuse or open circuit). If fuse is blown, check for short circuit before replacing fuse. Repair as necessary. Recheck cooling fan operation.
  23. 48) Check For Open High Fan PWR Circuit Turn ignition off. Measure resistance of HIGH FAN PWR circuit between HFC relay wiring harness connector and cooling fan motor wiring harness connector. If resistance is less than 5 ohms, go to step 75). If resistance is 5 ohms or greater, repair open in HIGH FAN PWR circuit. Recheck cooling fan operation. NOTE: A break in step numbering sequence occurs at this point. Procedure skips from step 48) to step 50). No test procedures have been omitted.
  24. 50) Low Speed &/Or High Speed Cooling Fan Inoperative (Contour, Cougar, Focus With A/C, Mystique & Windstar) If one cooling fan is inoperative, but other cooling fan operates normally, go to step 70). Turn ignition off. Disconnect LFC and HFC relays. Measure voltage between ground and B+ terminal at both LFC and HFC relay wiring harness connectors. If both voltage readings are greater than 10.5 volts, go to next step. If any voltage reading is 10.5 volts or less, locate and repair open in B+ circuit. If fuse or fuse link was blown, check and repair cause of blown fuse or fuse link. Recheck cooling fan operation.
  25. 51) Check Fan PWR Circuit, Fan Ground & Internal Fan Circuits Ensure ignition is off. Measure resistance between ground and FAN PWR terminal at both LFC and HFC relay wiring harness connectors. If both resistance readings are less than 15 ohms, go to next step. If any resistance reading is 15 ohms or greater, go to step 56).
  26. 52) Check For Short To Ground In Fan PWR Circuit Disconnect both cooling fan motors. Measure resistance between ground and FAN PWR terminal at HFC relay wiring harness connector. If resistance is greater than 10,000 ohms, go to next step. If resistance is 10,000 ohms or less, locate and repair short to ground in FAN PWR circuit. Recheck cooling fan operation.
  27. 53) Check HFC & LFC Relay Operation Ensure cooling fan motor connectors are disconnected. Reconnect HFC and LFC relays. Using scan tool, access OUTPUT TEST MODE. See «OUTPUT TEST MODE»(ref-97365-S13339716962001050300000) in ADDITIONAL SYSTEM FUNCTIONS. Check relays as follows: HFC Relay Turn ignition on, engine off. Using scan tool, command high speed fan ON. Wait 15 seconds. Using a voltmeter, measure voltage between ground and FAN PWR terminal at cooling fan motor wiring harness connector (either fan motor). Voltage should be greater than 10.5 volts. LFC Relay Turn ignition on, engine off. Using scan tool, command low speed fan ON. Using a voltmeter, measure voltage between ground and FAN PWR terminal at cooling fan motor wiring harness connector (either fan motor). Voltage should be greater than 10 volts. If both voltage readings are as specified, replace cooling fan motor(s). If any voltage reading is not as specified, note which fan speed is inoperative and go to step 75). NOTE: A break in step numbering sequence occurs at this point. Procedure skips from step 53) to step 56). No test procedures have been omitted.
  28. 56) Check Fan PWR Circuit Resistance Turn ignition off. Disconnect cooling fan motor (either one). Measure resistance of FAN PWR circuit between cooling fan motor wiring harness connector and both HFC and LFC relay wiring harness connectors. If both resistance readings are less than 15 ohms, go to next step. If any resistance reading is 15 ohms or greater, locate and repair open in FAN PWR circuit. Recheck cooling fan operation.
  29. 57) Check Cooling Fan Ground Circuit Measure resistance between ground and ground terminal at cooling fan motor wiring harness connector. If resistance is less than 5 ohms, replace inoperative cooling fan motor(s). If resistance is 5 ohms or greater, locate and repair open in ground circuit. Recheck cooling fan operation. NOTE: A break in step numbering sequence occurs at this point. Procedure skips from step 57) to step 60). No test procedures have been omitted.
  30. 60) Low &/Or High Speed Cooling Fan Always Runs (No DTCs): Verify Fan Is Not On Because Of A/C High Pressure Switch Input To PCM Start engine. Using scan tool, select ACP PID from PID/DATA monitor menu. If PID value indicates CLOSED, leave engine running and go to next step. If PID value indicates OPEN, go to step 65).
  31. 61) Check A/C High Pressure Switch Disconnect A/C high pressure switch. Again, check ACP PID value. If PID value indicates CLOSED, turn ignition off and go to next step. If PID value indicates OPEN, turn ignition off and reconnect A/C high pressure switch. Service A/C system as necessary.
  32. 62) Check For Short To Ground In ACPSW Circuit Disconnect scan tool from DLC. Disconnect PCM connector(s). Measure resistance between PCM connector terminal No. 86 and ground. If resistance is greater than 10,000 ohms, replace PCM. If resistance is 10,000 ohms or less, repair short to ground in ACPSW circuit.
  33. 63) Low &/Or High Speed Cooling Fan Always Runs (No DTCs): Verify Fan Is Not On Because Of A/C High Pressure Sensor Input To PCM Turn A/C off. Start engine. Using scan tool, select ACP V PID from PID/DATA monitor menu. If PID voltage indicates greater than 3 volts, turn ignition off. Service A/C system as necessary. If PID voltage is 3 volts or less, go to next step. NOTE: A break in step numbering sequence occurs at this point. Procedure skips from step 63) to step 65). No test procedures have been omitted.
  34. 65) Low &/Or High Speed Cooling Fan Always Runs Turn A/C and defroster off. Turn ignition off. Disconnect LFC relay. Turn ignition on. On Focus without A/C, if cooling fan continues to run, repair FAN PWR circuit for short to power. On all other models, if cooling fan continues to run, go to next step. If cooling fan stops, go to step 80).
  35. 66) Check HFC Relay Turn ignition off. Disconnect HFC and LFC relays. Turn ignition on. Check cooling fan operation. If cooling fan stops, go to step 80). If cooling fan remains on, turn ignition off. On Contour, Cougar, Focus, Mystique and Windstar, repair FAN PWR circuit for short to power. Recheck cooling fan operation. On all other models, go to next step.
  36. 67) Check Low Fan PWR Circuit For Short To Power Turn ignition off. Disconnect cooling fan motor connector (both fan motor connectors on Sable and Taurus). Turn ignition on. Measure voltage between ground and LOW FAN PWR terminal at cooling fan motor wiring harness connector. If voltage is less than one volt, repair HIGH FAN PWR circuit for short to power. Recheck cooling fan operation. If voltage is one volt or greater, repair LOW FAN PWR circuit for short to power. Recheck fan operation. NOTE: A break in step numbering sequence occurs at this point. Procedure skips from step 67) to step 70). No test procedures have been omitted.
  37. 70) One Cooling Fan Inoperative & Other Cooling Fan Operates Normal (No DTCs) Turn ignition off. Disconnect inoperative cooling fan motor connector. Measure resistance between ground and ground terminal at fan motor wiring harness connector. If resistance is less than 5 ohms, go to next step. If resistance is 5 ohms or greater, repair open in ground circuit. Recheck cooling fan operation.
  38. 71) Check For Voltage To Fan Disconnect remaining cooling fan motor. Using scan tool, access OUTPUT TEST MODE. See «OUTPUT TEST MODE»(ref-97365-S13339716962001050300000) in ADDITIONAL SYSTEM FUNCTIONS. Command high speed fan ON. Measure voltage between ground and HIGH FAN PWR terminal at inoperative cooling fan motor wiring harness connector. On Sable and Taurus, also command low speed fan ON. Measure voltage between ground and LOW FAN PWR terminal at inoperative cooling fan motor wiring harness connector. On all models, if voltage is greater than 10 volts (at both terminals on Sable and Taurus), replace inoperative cooling fan motor. Recheck cooling fan operation. If voltage is 10 volts or less, locate and repair open circuit between inoperative cooling fan motor and splice to other fan motor. Recheck fan operation. NOTE: A break in step numbering sequence occurs at this point. Procedure skips from step 71) to step 75). No test procedures have been omitted.
  39. 75) Accessing Parameter Identification (PID) A inoperative high speed or low speed fan can be caused by a primary circuit fault, even though a DTC was not set. Check if scan tool being used is capable of accessing PID values while in Output Test Mode. If PID access is possible, go to next step. If PID access is not possible, go to step 78) (if low speed fan is inoperative) or step 79) (if high speed fan is inoperative).
  40. 76) Check Operation Of Primary Fan Circuits Reconnect all connectors. Turn ignition on. Using scan tool, access OUTPUT TEST MODE. See «OUTPUT TEST MODE»(ref-97365-S13339716962001050300000) in ADDITIONAL SYSTEM FUNCTIONS. Perform the appropriate test procedure as follows: Low Speed Fan Inoperative Using scan tool, select LFCA and LFCF PIDs from PID/DATA monitor menu. With low speed fan off, LFCA PID should read OFF and LFCF PID should read NO. Command low speed fan ON. LFCA PID should read ON and LFCF PID should still be NO. High Speed Fan Inoperative Using scan tool, select HFCA and HFCF PIDs from PID/DATA monitor menu. Command high speed fan ON. HFCA PID should read OFF and LFCF PID should read NO. Command high speed fan ON. HFCA PID should read ON and HFCF PID should still be NO. If LFCF PID of HFCF PID indicated YES with fan commanded on or off, a primary circuit fault is detected. Go to step 1) and perform diagnosis for DTC P1479 (if HFCF PID was yes) or perform diagnosis for DTC P1474 (if LFCF PID was yes). If LFCF PID or HFCF PID indicated NO with fan commanded on or off, primary circuits are okay. Replace LFC relay (if low speed fan is inoperative) or replace HFC relay (if high speed fan is inoperative). Verify applicable FAN PWR circuit is not shorted to ground. Recheck cooling fan operation. NOTE: A break in step numbering sequence occurs at this point. Procedure skips from step 76) to step 78). No test procedures have been omitted.
  41. 78) Check Operation Of Low Speed Fan Primary Circuits Reconnect all connectors. Turn ignition on. Connect a test light between VPWR terminal and LFC terminal at LFC relay wiring harness connector. Using scan tool, access OUTPUT TEST MODE. See «OUTPUT TEST MODE»(ref-97365-S13339716962001050300000) in ADDITIONAL SYSTEM FUNCTIONS. While observing scan tool, command low speed fan ON then OFF. If test light turns on then off, primary circuits are okay. Replace LFC relay. Verify FAN PWR circuit is not shorted to ground. Recheck cooling fan operation. If test light did not turn on then off, LFC primary circuit fault is detected. Go to step 1) and perform diagnosis for DTC P1474.
  42. 79) Check Operation Of High Speed Fan Primary Circuits Reconnect all connectors. Turn ignition on. Connect a test light between VPWR terminal and HFC terminal at HFC relay wiring harness connector. Using scan tool, access OUTPUT TEST MODE. See «OUTPUT TEST MODE»(ref-97365-S13339716962001050300000) in ADDITIONAL SYSTEM FUNCTIONS. While observing scan tool, command high speed fan ON then OFF. If test light turns on then off, primary circuits are okay. Replace HFC relay. Verify FAN PWR circuit is not shorted to ground. Recheck cooling fan operation. If test light did not turn on then off, HFC primary circuit fault is detected. Go to step 1) and perform diagnosis for DTC P1479.
  43. 80) Check Operation Of Primary Fan Circuits A inoperative high speed or low speed fan can be caused by a primary circuit fault, even though a DTC was not set. Reconnect LFC or HFC relay connector. Turn ignition on. Using scan tool, access OUTPUT TEST MODE. See «OUTPUT TEST MODE»(ref-97365-S13339716962001050300000) in ADDITIONAL SYSTEM FUNCTIONS. Perform the appropriate test procedure as follows: Fan Stops Running With LFC Relay Disconnected Using scan tool, select LFCA and LFCF PIDs from PID/DATA monitor menu. Command low speed OFF. LFCA PID should read OFF and LFCF PID should read NO. Fan Stops Running With HFC Relay Disconnected Using scan tool, select HFCA and HFCF PIDs from PID/DATA monitor menu. Command high speed fan OFF. HFCA PID should read OFF and HFCF PID should read NO. If LFCF PID of HFCF PID indicated YES with fan commanded OFF, a primary circuit fault is detected. Go to step 1) and perform diagnosis for DTC P1479 (if HFCF PID was yes) or perform diagnosis for DTC P1474 (if LFCF PID was yes). If LFCF PID of HFCF PID indicated NO with fan commanded OFF, primary circuits are okay. Replace LFC relay (if fan stopped running with LFC relay disconnected) or replace HFC relay (if fan stopped running with HFC relay disconnected). Recheck cooling fan operation.

TEST X: CONSTANT CONTROL RELAY MODULE (CCRM)

Note. This article only tests the Fan Control (FC) relay and Constant Relay Control Module (CCRM) circuits. Other test may be referenced while performing electric cooling fan diagnosis. For complete Ford EEC-V system diagnosis, see SELF-DIAGNOSTICS - EEC-V - GASOLINE article in ENGINE PERFORMANCE.

Note. After each service or repair procedure has been completed, reconnect all components. Clear DTCs and repeat QUICK TEST procedures to ensure all EEC-V systems are working properly and DTCs are no longer present.

CCRM interfaces with the EEC-V system to provide control for cooling fan and A/C clutch. CCRM also contains EEC-V power relay, which provides battery power (VPWR) to the PCM and EEC-V system. Perform this test only when instructed by QUICK TEST or if directed by a system test. This test is only intended to diagnose the following

  1. Constant Control Relay Module (CCRM)
  2. Harness Circuits (B+, VPWR, FC, LOW FAN PWR, HIGH FAN PWR, GND, LFC, HFC, ACCS, A/C CLUTCH PWR & WAC) (Scheme 21)- (Scheme 23)
  3. Powertrain Control Module (PCM)

To prevent replacing good components, be aware the following non-EEC related components or systems may be at fault

  1. A/C System
  2. Fuel System
  3. Starting & Charging System

Scheme 21

Scheme 21
Scheme 21

Scheme 22

Scheme 22
Scheme 22

Scheme 23

Scheme 23
Scheme 23

Scheme 24

Scheme 24
Scheme 24

Scheme 25

Scheme 25
Scheme 25

Scheme 26

Scheme 26
Scheme 26

Scheme 27

Scheme 27
Scheme 27
  1. 1) Check VPWR Circuit Continuity Turn ignition off. Disconnect IAC valve connector. Disconnect CCRM connector. See «CCRM LOCATIONS»(ref-97365-S12636433622001050300000) table. Disconnect scan tool from Data Link Connector (DLC). Measure resistance between VPWR terminal at IAC wiring harness connector and terminals No. 12 and 24 at CCRM wiring harness connector. (Scheme 24) If both resistance readings are less than 5 ohms, reconnect IAC and go to next step. If any resistance reading is 5 ohms or greater, repair open in VPWR circuit between CCRM and splice to IAC valve. CCRM LOCATIONS Application Location Escort In Left Front Of Engine Compartment Mustang Mounted On Bracket, Behind Engine Coolant Reservoir
  2. 2) Check For Battery Voltage & IGN START/RUN Voltage To CCRM Measure voltage between negative battery terminal and terminals No. 8 and 10 at CCRM wiring harness connector. Note voltage. Turn ignition on. Measure voltage between negative battery terminal and terminal No. 13 at CCRM wiring harness connector. If all voltage readings are greater than 10.5 volts, go to next step. If any voltage reading is 10.5 volts or less, check related fuses. If fuse is blown, check for short to ground in B+ or IGN START/RUN circuits. Repair as necessary and replace fuse. If fuses are okay, repair open in B+ or IGN START/RUN circuit.
  3. 3) Check CCRM Ground Circuit Turn ignition off. Leave CCRM disconnected. Measure voltage between terminals No. 8 and 15 at CCRM wiring harness connector. If voltage is greater than 10.5 volts, replace CCRM. If voltage is 10.5 volts or less, repair open in ground circuit (terminal No. 15). NOTE: A break in step numbering sequence occurs at this point. Procedure skips from step 3) to step 15). No test procedures have been omitted.
  4. 15) DTC P1479: Check High Fan Control (HFC) Relay DTC P1479 indicates HFC primary circuit failure. Following are possible causes for this fault. Open Or Shorted Circuit Faulty CCRM Faulty Powertrain Control Module (PCM) Turn ignition off. Disconnect CCRM connector. See «CCRM LOCATIONS»(ref-97365-S12636433622001050300000) table. Measure resistance between terminals No. 17 and 24 at CCRM wiring harness connector. (Scheme 24) Resistance should be 65-100 ohms. Measure resistance between terminal No. 17 and terminals No. 1 through 11, 13, 15 and 21 at CCRM wiring harness connector. Each resistance should be greater than 1000 ohms. If resistance is as specified, go to next step. If resistance is not as specified, replace CCRM.
  5. 16) Check HFC Circuit Continuity Turn ignition off. Disconnect CCRM and PCM connectors. Inspect connectors for loose, damaged or corroded terminals. Repair as necessary. Measure resistance between PCM connector terminal No. 17 (Escort) or No. 46 (Mustang) and terminal No. 17 at CCRM wiring harness connector. If resistance is less than 5 ohms, go to next step. If resistance is 5 ohms or greater, repair open in HFC circuit.
  6. 17) Check HFC Circuit For Short To Power Turn ignition on. Measure voltage between negative battery terminal and PCM connector terminal No. 17 (Escort) or No. 46 (Mustang). If voltage is less than one volt, go to next step. If voltage is one volt or greater, repair short to power in HFC circuit.
  7. 18) Check HFC Circuit For Short To Ground Turn ignition off. Disconnect scan tool from Data Link Connector (DLC). Measure resistance between PCM connector terminal No. 17 (Escort) or No. 46 (Mustang) and negative battery. If resistance is 10,000 ohms or less, repair HFC circuit short to ground. If resistance is greater than 10,000 ohms, connect scan tool to DLC. Turn ignition on. Using scan tool, access OUTPUT TEST MODE. See «OUTPUT TEST MODE»(ref-97365-S13339716962001050300000) in ADDITIONAL SYSTEM FUNCTIONS. Command high speed fan ON and wait 10 seconds. Command high speed fan OFF. If high speed fan turns on and off as expected, disregard DTC P1479. Repeat «QUICK TEST»(ref-97365-S31976916802001050300000) and service any DTCs as necessary. If high speed fan does not turn on and off as expected, replace PCM. NOTE: A break in step numbering sequence occurs at this point. Procedure skips from step 18) to step 20). No test procedures have been omitted.
  8. 20) DTC P1474: Check Fan Operation This DTC indicates primary circuit failure in Low Fan Control (LFC) circuit or Fan Control (FC) circuit for single cooling fan systems. Following are possible causes for this fault. Open Or Shorted Circuit Faulty CCRM Faulty Powertrain Control Module (PCM) Turn ignition on. If cooling fan runs continuously, go to step 24). If cooling fan does not run continuously, go to next step.
  9. 21) Check FC/LFC Circuit For Short To Ground Turn ignition off. Disconnect CCRM connector. Disconnect scan tool from Data Link Connector (DLC). Disconnect PCM connector(s). Inspect connector for loose, damaged or corroded terminals. Repair as necessary. Measure resistance between terminal No. 14 at CCRM and negative battery terminal. If resistance is greater than 10,000 ohms, go to next step. If resistance is 10,000 ohms or less, repair short to ground in FC or LFC circuit.
  10. 22) Check Fan Operation Connect CCRM connector. Leave PCM disconnected. Turn ignition on. If cooling fan runs continuously, replace PCM. If cooling fan does not run continuously, replace CCRM. NOTE: A break in step numbering sequence occurs at this point. Procedure skips from step 22) to step 24). No test procedures have been omitted.
  11. 24) Check FC/LFC Circuit Continuity Disconnect CCRM connector. Disconnect PCM connector(s). Inspect connector for loose, damaged or corroded terminals. Repair as necessary. Measure resistance between PCM connector terminal No. 45 (except Mustang 4.6L) or No. 19 (Mustang 4.6L) and terminal No. 14 at CCRM wiring harness connector. If resistance is less than 5 ohms, go to next step. If resistance is 5 ohms or greater, repair open in FC or LFC circuit.
  12. 25) Check FC/LFC Circuit For Short To Power Turn ignition on. Measure voltage between negative battery terminal and terminal No. 14 at CCRM. If voltage is less than one volt, go to next step. If voltage is one volt or greater, repair short to power in FC or LFC circuit.
  13. 26) FC/LFC Circuit Fault Isolation Check Turn ignition off. Reconnect CCRM connector. Connect a jumper wire between PCM connector terminal No. 45 (except Mustang 4.6L) or No. 19 (Mustang 4.6L) and chassis ground. If cooling fan continues to run, replace CCRM. If cooling fan does not run continuously, replace PCM. NOTE: A break in step numbering sequence occurs at this point. Procedure skips from step 26) to step 30). No test procedures have been omitted.
  14. 30) Continuous Memory DTC P1474: Check FC/LFC Circuit For Open Circuit Or Short To Power This DTC indicates a circuit failure has occurred on Fan Control (FC) circuit (Mustang 3.8L) or Low Fan Control (LFC) circuit (Escort and Mustang 4.6L). Turn ignition off. Disconnect cooling fan connector. Connect a test light between ground and LOW FAN PWR (FAN PWR on Mustang 3.8L) terminal at cooling fan wiring harness connector. (Scheme 21)- (Scheme 23). Turn ignition on. Test light should be off. Check for indication of fault (test light blinks or turns on) while performing the following: Shake and bend FC/LFC circuit between CCRM and PCM. Lightly tap CCRM to simulate road shock. If fault is indicated, isolate fault and repair as necessary. If fault is not indicated, go to next step.
  15. 31) Check LFC/FC Circuit For Short To Ground Leave cooling fan connector disconnected and test light connected. Using scan tool, access OUTPUT TEST MODE. See «OUTPUT TEST MODE»(ref-97365-S13339716962001050300000) in ADDITIONAL SYSTEM FUNCTIONS. Command low speed fan ON. Test light should be on. Check for indication of fault (test light blinks or turns off) while performing the following: Shake and bend FC/LFC circuit between CCRM and PCM. Lightly tap CCRM to simulate road shock. If fault is indicated, isolate fault and repair as necessary. If fault is not indicated, problem is intermittent and cannot be duplicated at this time. NOTE: A break in step numbering sequence occurs at this point. Procedure skips from step 31) to step 35). No test procedures have been omitted.
  16. 35) Continuous Memory DTC P1479 This DTC indicates that High Fan Control (HFC) circuit failure has occurred. Turn ignition off. Disconnect cooling fan connector. Inspect connector for loose, damaged or corroded terminals. Repair as necessary. Connect a test light between ground and high fan power circuit terminal at cooling fan wiring harness connector. (Scheme 21)or (Scheme 23). Turn ignition on. Using scan tool, access OUTPUT TEST MODE. See «OUTPUT TEST MODE»(ref-97365-S13339716962001050300000) in ADDITIONAL SYSTEM FUNCTIONS. Command high speed fan ON. Test light should be on. Check for indication of fault (test light blinks or turns off) while performing the following: Shake and bend HFC circuit between CCRM and PCM. Lightly tap CCRM to simulate road shock. If fault is indicated, isolate fault and repair as necessary. If fault is not indicated, go to next step.
  17. 36) Check HFC Circuit For Short To Ground Turn ignition on. Command high speed fan OFF. Test light should be off. Check for indication of fault (test light blinks or turns on) while performing the following: Shake and bend HFC circuit between CCRM and PCM. Lightly tap CCRM to simulate road shock. If fault is indicated, isolate fault and repair as necessary. If fault is not indicated, problem is intermittent and cannot be duplicated or identified at this time. NOTE: A break in step numbering sequence occurs at this point. Procedure skips from step 36) to step 40). No test procedures have been omitted.
  18. 40) Check Cooling Fan Operation Turn ignition off. Using scan tool, access OUTPUT TEST MODE. See «OUTPUT TEST MODE»(ref-97365-S13339716962001050300000) in ADDITIONAL SYSTEM FUNCTIONS. Command cooling fan ON. Check fan operation. On 2-speed fan applications, check both fan speeds (wait 30 seconds after commanding high speed fan on). If fan does not operate, go to next step. If fan operates (all speeds), no problem is indicated at this time. Fault may be intermittent.
  19. 41) Cooling Fan Concern On Mustang 3.8L, go to next step. On all other models, during operational check of both fan speeds, if fan did not operate at any speed, stay in Output Test Mode and go to next step. If fan operated at one fan speed, go to step 50).
  20. 42) Cooling Fan Does Not Operate At Any Speed Turn ignition on. Disconnect cooling fan motor. Command fan ON (high speed for 2-speed applications). Measure voltage between chassis ground and HIGH FAN PWR (FAN PWR on Mustang 3.8L) terminal at cooling fan wiring harness connector. If voltage is 10 volts or less, go to next step. If voltage is greater than 10 volts, go to step 45).
  21. 43) Check B+ Circuit To Fan Relays Turn ignition off. Ensure cooling fan is disconnected. Disconnect CCRM connector. Measure voltage between negative battery terminal and terminals No. 3 and 4 at CCRM wiring harness connector. If both voltage readings are greater than 10 volts, go to next step. If any voltage reading is 10 volts or less, fault exists in B+ circuit. Check cooling fan related fuse/fuse links. If fuse/fuse link is blown, check for short to ground in B+ circuit. Repair as necessary. If fuse/fuse link is okay, check for open B+ circuit. Repair as necessary, reconnect all components and recheck system operation.
  22. 44) Check Power To Fan(s) Circuit Turn ignition off. Disconnect CCRM connector. See «CCRM LOCATIONS»(ref-97365-S12636433622001050300000) table. Ensure cooling fan is disconnected. Perform appropriate procedure: Mustang 3.8L Measure resistance of FAN PWR circuit between cooling fan wiring harness connector and terminal No. 2 at CCRM wiring harness connector. If resistance is less than 7 ohms, go to step 70). If resistance is 7 ohms or greater, locate and repair open circuit between cooling fan motor and CCRM. After repair is complete, reconnect all components and recheck system operation. All Models Except Mustang 3.8L Measure resistance of HIGH FAN PWR circuit between cooling fan wiring harness connector and terminal No. 6 at CCRM wiring harness connector. Measure resistance of LOW FAN PWR circuit between cooling fan wiring harness connector and terminal No. 2 of CCRM. If both resistance readings are less than 7 ohms, replace CCRM. If any resistance reading is 7 ohms or greater, locate and repair open circuit(s) between cooling fan motor and CCRM. After repair is complete, reconnect all components and recheck system operation.
  23. 45) Check Cooling Fan Ground Circuit Disconnect scan tool from Data Link Connector (DLC). Measure resistance between negative battery terminal and ground circuit terminal at cooling fan wiring harness connector. If resistance is 5 ohms or greater, locate and repair open ground circuit. Reconnect all components and recheck system operation. If resistance is less than 5 ohms, replace cooling fan motor. Reconnect all components and recheck system operation. NOTE: A break in step numbering sequence occurs at this point. Procedure skips from step 45) to step 50). No test procedures have been omitted.
  24. 50) Determine Which Fan Speed Is Operational If low speed fan is functioning properly, but high speed fan is inoperative, go to step 65). If low speed fan is not functioning properly, go to next step.
  25. 51) Low Speed Cooling Fan Inoperative Turn ignition on. Remain in Output Test Mode. Disconnect cooling fan. Command low speed fan ON. Measure voltage between negative battery terminal and LOW FAN PWR terminal at cooling fan wiring harness connector. If voltage is greater than 10 volts, replace fan motor. Reconnect all components and recheck system operation. If voltage is 10 volts or less, go to next step.
  26. 52) Check Low Fan Power Circuit Continuity Turn ignition off. Disconnect CCRM connector. Measure resistance between LOW FAN PWR terminal at cooling fan wiring harness connector and terminals No. 1 and 2 at CCRM wiring harness connector. (Scheme 24) If both resistance readings are less than 5 ohms, go to step 70). If any resistance reading is 5 ohms or greater, locate and repair open in LOW FAN PWR power circuit. Reconnect all components and recheck system operation. NOTE: A break in step numbering sequence occurs at this point. Procedure skips from step 52) to step 65). No test procedures have been omitted.
  27. 65) High Speed Cooling Fan Inoperative With scan tool still in Output Test Mode, disconnect cooling fan. Turn ignition on. Command high speed cooling fan ON. Measure voltage between negative battery terminal and HIGH FAN PWR terminal at cooling fan wiring harness connector. If voltage is 10.5 volts or less, go to next step. If voltage is greater than 10.5 volts, replace fan motor. Reconnect all components and recheck system operation.
  28. 66) Check High Fan Power Circuit Resistance Turn ignition off. Disconnect CCRM connector. Measure resistance of HIGH FAN PWR circuit between terminal No. 6 at CCRM wiring harness connector and cooling fan wiring harness connector. If resistance is less than 5 ohms, go to step 70). If resistance is 5 ohms or greater, locate and repair open in HIGH FAN PWR circuit. Reconnect all components and recheck system operation. NOTE: A break in step numbering sequence occurs at this point. Procedure skips from step 66) to step 70). No test procedures have been omitted.
  29. 70) Accessing Parameter Identification (PID) A inoperative high speed or low speed fan can be caused by a primary circuit fault, even though a DTC was not set. Check if scan tool being used is capable of accessing PID values while in Output Test Mode. If PID access is possible, go to next step. If PID access is not possible, go to step 73) (if fan inoperative on Mustang 3.8L or if low speed fan inoperative on all other models) or step 16) (if high speed fan inoperative).
  30. 71) Check Operation Of Primary Fan Circuits Reconnect all connectors. Turn ignition on. Using scan tool, access OUTPUT TEST MODE. See «OUTPUT TEST MODE»(ref-97365-S13339716962001050300000) in ADDITIONAL SYSTEM FUNCTIONS. Perform the appropriate test procedure as follows: Low Speed Fan Inoperative (Fan Inoperative On Mustang 3.8L) Using scan tool, select LFCA and LFCF PIDs from PID/DATA monitor menu. With low speed fan off, LFCA PID should indicate OFF and LFCF PID should indicate NO. Command low speed fan ON. LFCA PID should indicate ON and LFCF PID should still indicate NO. High Speed Fan Inoperative Using scan tool, select HFCA and HFCF PIDs from PID/DATA monitor menu. Command high speed fan ON. HFCA PID should indicate OFF and LFCF PID should indicate NO. Command high speed fan ON. HFCA PID should indicate ON and HFCF PID should still indicate NO. On all models, if LFCF PID of HFCF PID indicated YES with fan commanded on or off, a primary circuit fault is detected. Go to step 15) (if HFCF PID was yes) or go to step 20) (if LFCF PID was yes). If LFCF PID of HFCF PID indicated NO with fan commanded on or off, primary circuits are okay. Replace CCRM. Verify applicable FAN PWR circuit is not shorted to ground. Recheck cooling fan operation. NOTE: A break in step numbering sequence occurs at this point. Procedure skips from step 71) to step 73). No test procedures have been omitted.
  31. 73) Check FC Or LFC Circuit For Short To Ground Turn ignition off. Disconnect scan tool from DLC. Disconnect PCM connector(s). Inspect connector for loose, damaged or corroded terminals. Repair as necessary. Measure resistance between terminal No. 14 at CCRM and chassis ground. If resistance is greater than 10,000 ohms, replace CCRM. Ensure appropriate FAN PWR circuit is not shorted to ground. If resistance is 10,000 ohms or less, repair short to ground in LFC or LF circuit. NOTE: A break in step numbering sequence occurs at this point. Procedure skips from step 73) to step 80). No test procedures have been omitted.
  32. 80) Cooling Fan Always Runs, No DTCs Present Start engine. Using scan tool, select ACP PID from PID/DATA monitor menu. If PID value indicates CLOSED, leave engine running and go to next step. If PID value indicates OPEN, go to step 82).
  33. 81) Check A/C High Pressure Switch Disconnect A/C high pressure switch. Again, view ACP PID. If PID value indicates CLOSED, turn ignition off. Go to step 135) and check A/C high pressure input to PCM. If PID value indicates OPEN, turn ignition off. Reconnect A/C high pressure switch. Check A/C high pressure switch operation and check for overcharged A/C system. See appropriate article in AIR CONDITIONING & HEATING.
  34. 82) Cooling Fan Always Runs Turn all accessories off. Turn ignition on. Verify that cooling fan is always on. Turn ignition off. See «CCRM LOCATIONS»(ref-97365-S12636433622001050300000) table. Disconnect CCRM connector. Turn ignition on. If cooling fan is off, go to step 84). If cooling fan is still on, locate and repair short to power in power to fan circuit (Mustang 3.8L) or go to next step (all other models).
  35. 83) Check For Short To Power Disconnect cooling fan. Measure voltage between ground and LOW FAN PWR and HIGH FAN PWR terminals at cooling fan motor wiring harness connector. If both voltage readings are less than one volt, problem is intermittent and cannot be duplicated at this time. If any voltage reading is one volt or greater, locate and repair short to power in applicable FAN PWR circuit. Reconnect all components and recheck system operation.
  36. 84) Check Operation Of Primary Fan Circuits Reconnect all connectors. Turn ignition on. Using scan tool, access OUTPUT TEST MODE. See «OUTPUT TEST MODE»(ref-97365-S13339716962001050300000) in ADDITIONAL SYSTEM FUNCTIONS. Perform the appropriate test procedure as follows: Low Speed Fan Stops Running (Fan Stops Running On Mustang 3.8L) With CCRM Disconnected Using scan tool, select LFCA and LFCF PIDs from PID/DATA monitor menu. Command low speed OFF. LFCA PID should indicate OFF and LFCF PID should indicate NO. Fan Stops Running With CCRM Disconnected Using scan tool, select HFCA and HFCF PIDs from PID/DATA monitor menu. Command high speed fan OFF. HFCA PID should indicate OFF and HFCF PID should indicate NO. If LFCF PID of HFCF PID indicated YES with fan commanded off, a primary circuit fault is detected. Go to step 15) (if HFCF PID was yes) or go to step 20) (if LFCF PID was yes). If LFCF PID of HFCF PID indicated NO with fan commanded off, primary circuits are okay. Replace CCRM. Recheck cooling fan operation. NOTE: A break in step numbering sequence occurs at this point. Procedure skips from step 84) to step 98). No test procedures have been omitted.
  37. 98) Lack Of Cooling: A/C Not Functioning Turn ignition off. Disconnect A/C cycling switch. Connect a jumper wire between A/C cycling switch wiring harness connector terminals. Disconnect A/C clutch. Connect a DVOM between power and ground terminals at A/C clutch wiring harness connector. Start engine. Turn A/C on and wait 15 seconds. If voltage is not greater than 10.5 volts, go to next step. If voltage is greater than 10.5 volts, turn ignition off. Remove jumper wire. Reconnect all connectors. If symptom is poor A/C performance in hot ambient temperature on all except Mustang 3.8L, go to step 145). On all others, check and repair A/C system as necessary.
  38. 99) Check ACCS PID Value Ensure jumper wire is still connected between A/C cycling switch wiring harness connector terminals and A/C is on. Using scan tool, select ACCS PID from PID/DATA monitor menu. If PID value indicates ON, turn ignition off. Remove jumper wire. Reconnect A/C cycling switch, and go to step 110). If PID value indicates OFF, PCM is not receiving ACCS signal. Go to next step.
  39. 100) Check For Voltage To A/C Cycling Pressure Switch Disconnect A/C cycling switch. Turn ignition on. Turn A/C switch on. Measure voltage between A/C demand switch side of A/C cycling switch wiring harness connector and negative battery terminal. If voltage is greater than 10.5 volts, go to next step. If voltage is 10.5 volts or less, EEC-V system is okay. Fault is in A/C system. Check A/C system of cause of voltage loss to A/C cycling switch.
  40. 101) Check A/C Cycling Switch Contacts Turn ignition off. Measure resistance between A/C cycling switch terminals. If resistance is less than 5 ohms, go to next step. If resistance is 5 ohms or greater, EEC-V system is okay. Fault is in A/C system. Check A/C cycling switch and for proper refrigerant charge. Repair as necessary.
  41. 102) Check For Voltage To A/C High Pressure Switch (ACPSW) Turn ignition off. Reconnect A/C cycling switch. Disconnect ACPSW. Turn ignition on. Turn A/C switch on. Measure voltage between A/C demand switch terminal at ACPSW wiring harness connector and negative battery terminal. (Scheme 25) If voltage is greater than 10.5 volts, go to next step. If voltage is 10.5 volts or less, repair open circuit between ACPSW and A/C cycling switch.
  42. 103) Check Resistance Of ACPSW High Pressure Contacts Turn ignition off. Measure resistance between ACPSW high pressure terminals. (Scheme 26) If resistance is less than 5 ohms, go to next step. If resistance is 5 ohms or greater, check for overcharged A/C system. Service A/C system as necessary. If system charge is okay, replace ACPSW.
  43. 104) Check Voltage To PCM On ACCS Circuit Turn ignition off. Reconnect ACPSW. Disconnect PCM connector(s). Inspect connector for loose, damaged or corroded terminals. Repair as necessary. Turn ignition on. Turn A/C switch on. Measure voltage between PCM connector terminal No. 41 and negative battery terminal. If voltage is greater than 10.5 volts, replace PCM. If voltage is 10.5 volts or less, repair open circuit between PCM and ACPSW.
  44. 105) KOEO/KOER DTC P1460: Check ACCS PID This DTC indicates that a fault occurred in Wide Open Throttle A/C Cut-Out (WAC) circuit. Following are possible causes for this fault: A/C On During Self-Test Open Or Shorted Circuit Faulty CCRM Faulty Powertrain Control Module (PCM) Turn A/C and defroster off. Start engine and allow to idle. Using scan tool, select ACCS PID from PID/DATA monitor menu. If PID value indicates OFF, go to next step. If PID value indicates ON, go to step 125).
  45. 106) Check WAC Circuit & WOT A/C Cutoff Relay In CCRM Turn ignition off. Disconnect CCRM connector. See «CCRM LOCATIONS»(ref-97365-S12636433622001050300000) table. Measure resistance between terminal No. 22 and 24 at CCRM wiring harness connector. (Scheme 24) Resistance should be 130-200 ohms. Measure resistance between terminal No. 22 and terminals No. 1 through 11, 13, 15 and 21 at CCRM wiring harness connector. Each resistance should be greater than 1000 ohms. If resistance is as specified, go to next step. If resistance is not as specified, replace CCRM. Start engine and turn A/C on for 15 seconds. Turn A/C off and repeat «QUICK TEST»(ref-97365-S31976916802001050300000).
  46. 107) WAC Circuit For Short To Power Disconnect PCM connector(s). Inspect connector for loose, damaged or corroded terminals. Repair as necessary. Turn ignition on. Measure voltage between terminal No. 22 at CCRM and chassis ground. If voltage is less than one volt, go to next step. If voltage is one volt or greater, repair WAC circuit short to power. Start engine and turn A/C on for 15 seconds. Turn A/C off and repeat «QUICK TEST»(ref-97365-S31976916802001050300000).
  47. 108) Check WAC Circuit For Short To Ground Turn ignition off. Leave CCRM and PCM disconnected. Disconnect scan tool from Data Link Connector (DLC). Measure resistance between terminal No. 22 at CCRM wiring harness connector and chassis ground. If resistance is greater than 10,000 ohms, go to next step. If resistance is 10,000 ohms or less, repair WAC circuit short to ground. Start engine and turn A/C on for 15 seconds. Turn A/C off and repeat «QUICK TEST»(ref-97365-S31976916802001050300000).
  48. 109) Check WAC Circuit Resistance Turn ignition off. Measure resistance between PCM connector terminal No. 69 (WAC) and terminal No. 22 at CCRM wiring harness connector. If resistance is less than 5 ohms, replace PCM. Start engine and turn A/C on for 15 seconds. Turn A/C off and repeat «QUICK TEST»(ref-97365-S31976916802001050300000). If resistance 5 ohms or greater, repair open in WAC circuit. Start engine and turn A/C on for 15 seconds. Turn A/C off and repeat QUICK TEST.
  49. 110) Check A/C Voltage To CCRM Turn ignition off. Disconnect CCRM connector. Turn A/C demand switch on. Measure voltage between terminal No. 21 at CCRM wiring harness connector and chassis ground. If voltage is greater than 10.5 volts, go to next step. If voltage is 10.5 volts or less, repair open in A/C demand circuit between CCRM and ACCS circuit splice to PCM.
  50. 111) Check Circuit Continuity Turn ignition off. Disconnect scan tool from Data Link Connector (DLC). Disconnect A/C clutch connector. Measure resistance of A/C clutch ground circuit between terminal No. 16 at CCRM wiring harness connector and A/C clutch wiring harness connector. Measure resistance of A/C clutch PWR circuit between terminal No. 23 at CCRM wiring harness connector and A/C clutch wiring harness connector. If any resistance reading is 5 ohms or greater, repair open circuit. If both resistance readings are less than 5 ohms, replace CCRM. Verify A/C clutch PWR circuit is not shorted to ground. NOTE: A break in step numbering sequence occurs at this point. Procedure skips from step 111) to step 115). No test procedures have been omitted.
  51. 115) Continuous Memory DTC P1469: Excessive A/C Compressor Clutch Cycling This DTC indicates ACCS input to PCM has changed states in less than 8.5 second intervals. Possible causes are: A/C system mechanical fault such as low refrigerant charge or damaged A/C cycling switch. Intermittent open circuit between A/C cycling pressure switch and PCM terminal No. 41 (ACCS). Check A/C system for mechanical fault such as low refrigerant charge or damaged A/C cycling switch. See appropriate article in AIR CONDITIONING & HEATING. If fault is indicated, isolate fault and repair as necessary. Clear DTCs. Start engine and turn A/C on for about 2 minutes. Turn engine and A/C off and repeat «QUICK TEST»(ref-97365-S31976916802001050300000). If fault is not indicated, go to next step.
  52. 116) Check Circuit Between A/C Cycling Switch & PCM Turn ignition off. Turn ignition on. Using scan tool, select ACCS PID from PID/DATA monitor menu. Turn A/C switch on. Check for indication of fault while performing the following: Shake and bend ACCS circuit between A/C cycling switch and PCM. Lightly tap A/C cycling switch to simulate road shock. Fault will be indicated by ACCS PID quickly turning on and off. If fault is indicated, isolate and repair as necessary. Clear DTCs. Start engine and turn A/C on for about 2 minutes. Turn engine and A/C off and repeat «QUICK TEST»(ref-97365-S31976916802001050300000). If fault is not indicated, problem is intermittent and cannot be duplicated at this time. NOTE: A break in step numbering sequence occurs at this point. Procedure skips from step 116) to step 120). No test procedures have been omitted.
  53. 120) Continuous Memory DTC P1460: Intermittent WAC Circuit Failure Turn ignition off. Disconnect A/C cycling switch. Connect a jumper wire between A/C cycling switch wiring harness connector terminals. Turn ignition on. On Mustang, turn A/C demand switch on. On Escort, using scan tool, access OUTPUT TEST MODE. See «OUTPUT TEST MODE»(ref-97365-S13339716962001050300000) in ADDITIONAL SYSTEM FUNCTIONS. Command outputs ON (this will engage A/C clutch). On all models, check for indication of fault while performing the following: Shake and WAC circuit between CCRM and PCM. Lightly tap on CCRM to simulate road shock. An open circuit or short to power is indicated by A/C clutch clicking on (Mustang) or by A/C clutch clicking off (Escort). On Escort, using scan tool, turn outputs OFF. On all models, check for indication of fault while performing the following: Shake and WAC circuit between CCRM and PCM. Lightly tap on CCRM to simulate road shock. A short to ground is indicated by A/C clutch clicking off (Mustang) or by A/C clutch clicking on (Escort). If a fault is located, isolate fault and repair as necessary. Start engine and turn A/C on for 15 seconds. Turn A/C off and repeat «QUICK TEST»(ref-97365-S31976916802001050300000). If fault is not located, fault is intermittent. Remove jumper wire and go to TEST Z: INTERMITTENT in SELF-DIAGNOSTICS - EEC-V - GASOLINE article in ENGINE PERFORMANCE and check for intermittent faults.
  54. 124) DTC P1464: Check ACCS PID This DTC indicates ACCS input to PCM was high during self-test. Turn ignition off. Connect scan tool to DLC. Turn ignition on. Using scan tool, select ACCS PID from PID/DATA monitor menu. If PID value indicates ON, go to next step. If PID value indicates OFF, indication is A/C and defrost switch were on during self-test. Turn A/C and defrost switch off. Repeat «KOEO ON-DEMAND SELF-TEST»(ref-97365-S18963679462001050300000) or «KOER ON-DEMAND SELF-TEST»(ref-97365-S28004042422001050300000) where DTC P1464 was received.
  55. 125) ACCS PID On Turn ignition off. Disconnect A/C cycling switch. Turn ignition on. Using scan tool, select ACCS PID from PID/DATA monitor menu. If PID value indicates ON, go to step 127) (Escort) or next step (Mustang). If PID value indicates OFF, check A/C switch and replace switch as necessary. See appropriate article in AIR CONDITIONING & HEATING. If A/C switch is okay, repair short to power in A/C demand circuit to A/C cycling switch.
  56. 126) Check A/C Clutch Circuit For Short To Power Turn ignition off. Disconnect CCRM connector. See «CCRM LOCATIONS»(ref-97365-S12636433622001050300000) table. Turn ignition on. Measure voltage between terminal No. 23 at CCRM wiring harness connector and negative battery terminal. (Scheme 24) If voltage is less than one volt, go to next step. If voltage is one volt or greater, repair short to power.
  57. 127) Check ACCS Circuit For Short To Power Turn ignition off. On Escort, reconnect CCRM and A/C cycling switch. On all models, Disconnect PCM connector(s). Inspect connector for loose, damaged or corroded terminals. Repair as necessary. Turn ignition on. Measure voltage at PCM connector terminal No. 41 and negative battery terminal. If voltage is less than one volt, replace PCM (Escort) or go to next step (Mustang). If voltage is one volt or greater, repair short to power in ACCS circuit.
  58. 128) Check ACCS Circuit Voltage To PCM Turn ignition off. Leave A/C cycling switch and PCM disconnected. Reconnect CCRM. Turn ignition on. Measure voltage between PCM connector terminal No. 41 and ground. If voltage is less than one volt, replace PCM. If voltage is one volt or greater, replace CCRM. NOTE: A break in step numbering sequence occurs at this point. Procedure skips from step 128) to step 130). No test procedures have been omitted.
  59. 130) Check If A/C Turns Off When A/C Switch Is Turned Off Turn A/C demand switch off. If A/C turns off, go to next step. If A/C does not turn off, go to step 140).
  60. 131) Check If A/C Cuts Off During WOT Start engine and allow to idle. Turn A/C on. Briefly snap throttle wide open and then return to idle. Listen for A/C clutch disengagement during WOT, then re-engagement after a few seconds of returning to idle. A click noise will be heard when A/C re-engages. Repeat test several times. If A/C clicking noise cannot be heard, disconnect A/C clutch. Connect a test light between A/C clutch power and ground terminals at A/C clutch wiring harness connector. Again, briefly snap throttle to wide open position and return to idle. Test light should be off during WOT and on after a few seconds of returning to idle. If A/C clutch or test light operates as specified, WAC circuit is functioning properly at this time. Go to TEST Z: INTERMITTENT in SELF-DIAGNOSTICS - EEC-V - GASOLINE article in ENGINE PERFORMANCE and check for intermittents. If A/C clutch or test light does not operate as specified, go to next step.
  61. 132) No WOT A/C Cutoff, No DTCs: Check CCRM Reconnect A/C clutch (if necessary). Turn ignition on. Using scan tool, access OUTPUT TEST MODE. See «OUTPUT TEST MODE»(ref-97365-S13339716962001050300000) in ADDITIONAL SYSTEM FUNCTIONS. Turn A/C DEMAND switch on. While observing A/C clutch engagement, command outputs on and off several times. If A/C clutch engagement cycles, system is functioning properly at this time. Go to TEST Z: INTERMITTENT in SELF-DIAGNOSTICS - EEC-V - GASOLINE article in ENGINE PERFORMANCE and check for intermittent faults. If A/C clutch does not cycle, replace CCRM. NOTE: A break in step numbering sequence occurs at this point. Procedure skips from step 132) to step 135). No test procedures have been omitted.
  62. 135) Check ACPSW Circuit For Short To Ground Turn ignition off. Disconnect A/C high pressure switch connector. Disconnect scan tool from Data Link Connector (DLC). Disconnect PCM connector(s). Inspect connector for loose, damaged or corroded terminals. Repair as necessary. Measure resistance between PCM connector terminal No. 86 and ground. If resistance is greater than 10,000 ohms, replace PCM. If resistance is 10,000 ohms or less, repair short to ground in ACPSW circuit. NOTE: A break in step numbering sequence occurs at this point. Procedure skips from step 135) to step 140). No test procedures have been omitted.
  63. 140) A/C Always On: Check Voltage At A/C Clutch Turn ignition off. Turn A/C and defroster off. Disconnect A/C clutch. Connect a DVOM between A/C clutch wiring harness connector terminals. Start engine. If voltage is 2 volts or greater, go to next step. If voltage is less than 2 volts, electrical portion of A/C system is not at fault. If A/C related symptom still exists, see appropriate article in AIR CONDITIONING & HEATING.
  64. 141) Check ACCS Input To PCM Turn ignition off. Ensure A/C and defroster are off. Start engine. Using scan tool, select ACCS PID from PID/DATA monitor menu. If PID value indicates ON, go to step 125). If PID value indicates OFF, check A/C system and repair as necessary. See appropriate article in AIR CONDITIONING & HEATING. NOTE: A break in step numbering sequence occurs at this point. Procedure skips from step 141) to step 145). No test procedures have been omitted.
  65. 145) Check A/C High Pressure Switch Medium Pressure Circuits Turn ignition off. Disconnect A/C high pressure switch. Ensure A/C is off. Connect jumper wire between ACPSW terminal and ground terminal at A/C high pressure switch connector. (Scheme 27) Start engine and allow to idle for 15 seconds. If high speed fan does not come on, go to next step. If high speed fan comes on, turn ignition off. A/C high pressure switch medium pressure circuits are okay. Remove jumper wire and reconnect A/C high pressure switch connector. See appropriate article in AIR CONDITIONING & HEATING to diagnose symptom.
  66. Check Ground Circuit To A/C High Pressure Switch With engine still running, move jumper wire from ground terminal at A/C high pressure switch connector to negative battery post. Wait 15 seconds. If high speed fan comes on, turn ignition off. Repair open ground circuit to A/C high pressure switch. If high speed fan does not come on, remove jumper wire and go to next step.
  67. Check ACPSW Circuit To PCM Disconnect PCM connector(s). Measure resistance between PCM harness connector terminal No. 86 and A/C high pressure switch connector ACPSW terminal. (Scheme 27) If resistance is less than 5 ohms, replace PCM. If resistance is 5 ohms or greater, repair open circuit.

Electric Cooling Fan Wiring Diagram (Continental). Scheme 28

Scheme 28: Electric Cooling Fan Wiring Diagram (Continental)
Scheme 28: Electric Cooling Fan Wiring Diagram (Continental)

Electric Cooling Fan Wiring Diagram (Contour & Mystique). Scheme 29

Scheme 29: Electric Cooling Fan Wiring Diagram (Contour & Mystique)
Scheme 29: Electric Cooling Fan Wiring Diagram (Contour & Mystique)

Electric Cooling Fan Wiring Diagram (Cougar). Scheme 30

Scheme 30: Electric Cooling Fan Wiring Diagram (Cougar)
Scheme 30: Electric Cooling Fan Wiring Diagram (Cougar)

Electric Cooling Fan Wiring Diagram (Crown Victoria & Grand Marquis). Scheme 31

Scheme 31: Electric Cooling Fan Wiring Diagram (Crown Victoria & Grand Marquis)
Scheme 31: Electric Cooling Fan Wiring Diagram (Crown Victoria & Grand Marquis)

Electric Cooling Fan Wiring Diagram (Escort & Escort ZX2). Scheme 32

Scheme 32: Electric Cooling Fan Wiring Diagram (Escort & Escort ZX2)
Scheme 32: Electric Cooling Fan Wiring Diagram (Escort & Escort ZX2)

Electric Cooling Fan Wiring Diagram (Focus With A/C). Scheme 33

Scheme 33: Electric Cooling Fan Wiring Diagram (Focus With A/C)
Scheme 33: Electric Cooling Fan Wiring Diagram (Focus With A/C)

Electric Cooling Fan Wiring Diagram (Focus Without A/C). Scheme 34

Scheme 34: Electric Cooling Fan Wiring Diagram (Focus Without A/C)
Scheme 34: Electric Cooling Fan Wiring Diagram (Focus Without A/C)

Electric Cooling Fan Wiring Diagram (LS). Scheme 35

Scheme 35: Electric Cooling Fan Wiring Diagram (LS)
Scheme 35: Electric Cooling Fan Wiring Diagram (LS)

Electric Cooling Fan Wiring Diagram (Mustang - 3.8L). Scheme 36

Scheme 36: Electric Cooling Fan Wiring Diagram (Mustang - 3.8L)
Scheme 36: Electric Cooling Fan Wiring Diagram (Mustang - 3.8L)

Electric Cooling Fan Wiring Diagram (Mustang - 4.6L). Scheme 37

Scheme 37: Electric Cooling Fan Wiring Diagram (Mustang - 4.6L)
Scheme 37: Electric Cooling Fan Wiring Diagram (Mustang - 4.6L)

Electric Cooling Fan Wiring Diagram (Sable & Taurus). Scheme 38

Scheme 38: Electric Cooling Fan Wiring Diagram (Sable & Taurus)
Scheme 38: Electric Cooling Fan Wiring Diagram (Sable & Taurus)

Electric Cooling Fan Wiring Diagram (Town Car). Scheme 39

Scheme 39: Electric Cooling Fan Wiring Diagram (Town Car)
Scheme 39: Electric Cooling Fan Wiring Diagram (Town Car)

Electric Cooling Fan Wiring Diagram (Windstar). Scheme 40

Scheme 40: Electric Cooling Fan Wiring Diagram (Windstar)
Scheme 40: Electric Cooling Fan Wiring Diagram (Windstar)

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