2000 Lincoln LS Blower Motor

Tiny
MOMO52
  • MEMBER
  • 2000 LINCOLN LS
  • V8
  • 2WD
  • AUTOMATIC
  • 106,000 MILES
I just bought the car today and the blower only worked on low, after a few hours it doesnt blow at all. I can hear the relays clicking under the dash when I turn the fan up, but nothing happens. What should I do?
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Tuesday, September 2nd, 2008 AT 2:21 AM

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Tiny
MERLIN2021
  • EXPERT
TEST O: BLOWER MOTOR INOPERATIVE OR DOES NOT OPERATE PROPERLY 1. Turn ignition on. Press PANEL on DATC panel. Operate fan in all speeds. If fan operates at high speed with only 7 bars showing on DATC display, go to TEST Q: NO OPERATION IN SOME BLOWER SPEEDS . If fan does not operate at high speed with only 7 bars showing on DATC display panel, go to next step. 2. Ensure Green 16-pin harness connector C260, located on evaporator housing, is connected. If harness connector C260 is connected, go to next step. If harness connector C260 is not connected, reconnect connector C260 and recheck system operation. 3. Turn ignition off. Remove fuse F116 (30-amp) from Underhood Auxiliary Junction Box (UAJB), located in right front of engine compartment. If fuse is okay, go to next step. If fuse F116 is blown, replace fuse F116. Recheck system operation. If fuse F116 blows again, go to next step. 4. Turn ignition off. Remove blower motor relay from UAJB. Turn ignition on. If fuse F116 blows, repair Red/Orange wire between fuse F116 and blower motor relay. See WIRING DIAGRAMS . Recheck system operation. If fuse F116 does not blow, go to next step. 5. Remove blower motor relay from UAJB. Measure voltage between ground and blower motor relay socket terminal No. 86 (Red/Orange wire). If more than 10 volts exists, go to next step. See Fig. 9 . If 10 volts or less exists, repair open in Red/Orange wire. See WIRING DIAGRAMS . Recheck system operation. Fig. 9: Identifying Blower Motor Relay Socket Terminals Courtesy of FORD MOTOR CO. 6. Measure resistance between ground and blower motor relay socket terminal No. 85 (Black/Blue wire). If resistance is less than 10 ohms, go to next step. If resistance is 10 ohms or more, repair open or high resistance in Black/Blue wire between blower motor relay and DATC. See WIRING DIAGRAMS . Recheck system operation. 7. Test blower motor relay. See MINI ISO RELAY under COMPONENT TESTS. If blower motor relay is okay, go to next step. If blower motor is not okay, replace blower motor relay. Recheck system operation. 8. Disconnect blower motor speed control 5-pin harness connector C297. Connect fused jumper wire between blower motor speed control harness connector C297 terminals No. 4 (Black/Red wire) and No. 5 (Black wire). Turn ignition on. If blower motor operates, reconnect blower motor speed control connector and recheck system operation. If blower motor still does not operate, go to step 13 . If blower motor does not operate, go to next step. 9. Turn ignition off. Disconnect blower motor 2-pin harness connector C288. Connect blower motor speed control connector. Turn ignition on. Set blower motor speed to high. Measure voltage between blower motor harness connector C288 Red/Black and Black/Red wire terminals. If more than 10 volts exists, replace blower motor. Recheck system operation. If 10 volts or less exists, go to next step. 10. Turn ignition off. Remove blower motor relay from UAJB. Measure resistance between ground and blower motor harness connector C288 Red/Black wire terminal. If resistance is more than 10 k/ohms, go to next step. If resistance is 10 k/ohms or less, repair short to ground in Red/Black wire. See WIRING DIAGRAMS . Recheck system operation. 11. Remove fuse No. 116 (30-amp) from UAJB. Turn ignition off. Remove blower motor relay from UAJB. Disconnect blower motor 2-pin harness connector C288. Measure resistance of Red/Black wire between blower motor relay socket terminal No. 87 and blower motor harness connector C288. If resistance is 5 ohms or less, go to next step. If resistance is more than 5 ohms, repair open or high resistance in Red/Black wire. See WIRING DIAGRAMS . Recheck system operation. 12. Connect blower motor connector. Disconnect blower motor speed control 5-pin harness connector C297. Turn ignition on. Measure voltage between ground and blower motor speed control harness connector C297 terminal No. 4 (Black/Red wire). If more than 10 volts exists, go to next step. If 10 volts or less exists, repair open in Black/Red wire between blower motor and blower motor speed control. See WIRING DIAGRAMS . Recheck system operation. Fig. 10: Identifying Blower Motor Speed Controller Harness Connector C297 Terminals Courtesy of FORD MOTOR CO. 13. Turn ignition off. Measure resistance between ground and blower motor speed control harness connector C297 terminal No. 5 (Black wire). See Fig. 2 . If resistance is more than 5 ohms, repair open or high resistance in Black wire. See WIRING DIAGRAMS . Recheck system operation. If resistance is 5 ohms or less, go to next step. 14. Connect blower motor speed control connector. Turn ignition on. Set blower motor speed to less than high (1-6 bars). Using DVOM connected to ground, measure voltage by backprobing DATC module harness connector C228a terminal No. 15 (Brown/Blue wire). See Fig. 2 . Note voltage. Set blower motor speed to high (7 bars). Using DVOM connected to ground, measure voltage by backprobing DATC module harness connector C228b terminal No. 8 (Gray/Violet wire). See Fig. 3 . If 1-3 volts exists at DATC module harness connector C228a terminal No. 15 and more than 10 volts exist at DATC module harness connector C228b terminal No. 8, replace blower motor speed control. Recheck system operation. If 1-3 volts does not exist at DATC module harness connector C228a terminal No. 15, go to next step. If more than 10 volts does not exist at DATC module harness connector C228b terminal No. 8, go to step 16 . If 1-3 volts does not exist at connector C228a terminal No. 15 and more than 10 volts does not exist at connector C228b terminal No. 8, go to next step. 15. Turn ignition off. Disconnect DATC module 22-pin harness connector C228a. Disconnect blower motor speed control 5-pin harness connector C297. Measure resistance of Brown/Blue wire between blower motor speed control harness connector C297 terminal No. 2 and DATC module harness connector C228a terminal No. 15. If resistance is 5 ohms or more, repair open or high resistance in Brown/Blue wire. See WIRING DIAGRAMS . If resistance is less than 5 ohms, recheck all terminals. Reconnect all connectors and recheck system operation. If system still does not operate properly and less than one volt existed at DATC module harness connector C228a terminal No. 15 in step 14 , replace DATC module. Recheck system operation. 16. Turn ignition off. Disconnect DATC module 26-pin harness connector C228b. Measure resistance of Gray/Violet wire between blower motor speed control harness connector C297 terminal No. 3 and DATC module harness connector C228a terminal No. 15. See Fig. 2 and Fig. 10 . If resistance is less than 5 ohms, recheck all terminals and reconnect all connectors. Recheck system operation. If system operation is still not correct, replace DATC module. If resistance is 5 ohms or more, repair open or high resistance in Gray/Violet wire. See WIRING DIAGRAMS . Recheck system operation.
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Pay particular attention to step 8!
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Tuesday, September 2nd, 2008 AT 6:33 AM

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