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Rear Washer Motor Inoperative

  1. Turn ignition off. Disconnect rear washer motor connector. Turn ignition on. Connect test light between rear washer motor connector terminals. If test light illuminates when activating rear washer motor, replace rear washer motor. If test light does not illuminate when activating rear washer motor, go to next step.
  2. Turn ignition off. Using test light connected to battery voltage, probe rear washer motor connector Black wire terminal. If test light illuminates when activating rear washer motor, go to next step. If test light does not illuminate when activating rear washer motor, repair open in Black wire between rear washer motor connector terminal No. 2 and ground. See GROUND DISTRIBUTION article in WIRING DIAGRAMS.
  3. Access and disconnect Black 16-pin Heating Ventilation Air Conditioning (HVAC) controller connector C1. See HEATING VENTILATION AIR CONDITIONING CONTROLLER  under REMOVAL & INSTALLATION. Using DVOM, measure resistance of Black/White wire between Black 16-pin HVAC controller connector C1 terminal No. 5 and rear washer motor connector terminal No. 1. See Figure . If resistance is 5 ohms or less, go to next step. If resistance is more than 5 ohms, repair open in Black/White wire between Black 16-pin HVAC controller connector C1 terminal No. 5 and rear washer motor connector terminal No. 1.
  4. Using DVOM, measure resistance between ground and Black 16-pin HVAC controller connector C1 terminal No. 5 (Black/White wire). If resistance is 5 ohms or less, repair short to ground in Black/White wire between Black 16-pin HVAC controller connector C1 terminal No. 5 and rear washer motor connector terminal No. 1. If resistance is more than 5 ohms, go to next step.
  5. Disconnect Black 12-pin HVAC controller connector C2. Turn ignition on. Using test light connected to ground, probe Black 12-pin HVAC controller connector C2 terminal No. 7 (Red/Dark Green wire). See Figure . If test light illuminates, go to step  8 . If test light does not illuminate, go to next step.
  6. Check fuse No. 25 (10-amp) located in instrument panel junction block. See COMPONENT LOCATIONS  . If fuse No. 25 is okay, repair open in Red/Dark Green wire between Black 12-pin HVAC controller connector C2 terminal No. 7 and White 16-pin instrument panel junction block connector C11 terminal No. 5. See Figure . If fuse No. 25 is blown, check for short to ground in Red/Dark Green wire between Black 12-pin HVAC controller connector C2 terminal No. 7 and White 16-pin instrument panel junction block connector C11 terminal No. 5. If Red/Dark Green wire is not shorted to ground, go to next step.
  7. Repair short to ground in Black/White wire between Black 16-pin HVAC controller connector C1 terminal No. 5 and rear washer motor connector terminal No. 1.
  8. Replace HVAC controller. See HEATING VENTILATION AIR CONDITIONING CONTROLLER  under REMOVAL & INSTALLATION.
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