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Test C: Washers Do Not Operate Properly

NOTE: After repair, repeat GEM self-test and clear DTCs.
  1. Turn ignition switch to LOCK position. Connect New Generation Star (NGS) or Worldwide Diagnostic System (WDS) tester to Data Link Connector (DLC). DLC is located behind instrument panel to right of steering column. Depress clutch pedal (M/T). Observe GEM PIDs IGN_S, IGN_R, IGN_A and IGN_KEY while turning ignition switch through all positions. If PID values agree with switch positions, go to next step. If PID IGN_KEY values do not agree with switch positions, go to TEST D: KEY-IN-IGNITION CIRCUIT .
  2. Turn ignition switch to RUN position. Using NGS/WDS tester, observe GEM PID WPMODE while turning wiper/washer switch through all positions. If PID values agree with switch positions, go to next step. If PID values do not agree with switch positions, go to TEST B: WIPERS DO NOT OPERATE PROPERLY .
  3. Using NGS/WDS tester, trigger GEM active command WASH RLY to ON and OFF. If washer turn on and off, replace GEM. See GENERIC ELECTRONIC MODULE (GEM)  under REMOVAL & INSTALLATION. If washers do not turn on and off, go to next step.
    4. NOTE: Verify voltage at central junction box fuse No. 26 (30-amp) before performing next test.
  4. Remove washer pump relay. Measure voltage between ground and terminal No. 1 (Dark Green wire) at washer pump relay socket. See Figure. Measure voltage between ground and terminal No. 5 (Dark Green wire) at washer pump relay socket. If battery voltage exists, go to next step. If battery voltage does not exist, repair open in Dark Green wire(s) between output of fuse No. 26 (30-amp) at central junction box, splice S225 and branches to terminals No. 5 and 1 at washer pump relay socket. See COMPONENT LOCATIONS .
  5. Attach 30-amp fused jumper wire between terminals No. 3 and 5 at washer pump relay socket. See Figure. If washer pump runs, go to next step. If washer pump does not run, go to step  10.
  6. Test washer pump relay. See MICRO RELAYS  under COMPONENT TESTS. If relay is okay, go to next step. If relay is faulty, replace relay.
  7. Turn ignition switch to LOCK position. Disconnect GEM 12-pin harness connector C293. Measure voltage between ground and terminal No. 6 (Tan/Red wire) at GEM harness connector C293. See Figure. If battery voltage exists, repair short to power in Tan/Red wire between washer pump relay socket, in-line connector C332 and GEM. If battery voltage does not exist, go to next step.
  8. Measure resistance between ground and terminal No. 6 (Tan/Red wire) at GEM harness connector C293. See Figure. If resistance is more than 10 k/ohms, go to next step. If resistance is 10 k/ohms or less, repair short to ground Tan/Red wire between washer pump relay socket and GEM.
  9. Measure resistance in Tan/Red wire between terminal No. 6 at GEM harness connector C293 and terminal No. 2 at washer pump relay socket. See Figure and Figure . If resistance is 5 ohms or less, replace GEM. See GENERIC ELECTRONIC MODULE (GEM)  under REMOVAL & INSTALLATION. If resistance is more than 5 ohms, repair open in Tan/Red wire between washer pump relay and GEM.
  10. Disconnect washer pump 2-pin harness connector. Measure voltage between ground and Black/White wire terminal at washer pump harness connector. If battery voltage exists, repair short to power in Black/White wire between washer pump relay, in-line connector C105 and washer pump. If battery voltage does not exist, go to next step.
  11. Measure resistance of Black/White wire between terminal No. 3 at washer pump harness connector and washer pump relay socket. 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 washer pump relay, in-line connector C105 and washer pump.
  12. Measure resistance of Black wire between washer pump harness connector and ground. If resistance is 5 ohms or less, replace washer pump. If resistance is more than 5 ohms, repair open in Black wire between washer pump, splice S103 and ground G102. See COMPONENT LOCATIONS .
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