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Test E: Washer Pump & Wipers Do Not Function Properly

WARNING: This page is about a different car, the 1997 Mercury Mountaineer and 1997 Ford Explorer. However, it is still accessible from the selected car via links, so may be relevant.
  1. Connect New Generation Star (NGS) tester (007-00500) to Data Link Connector (DLC). DLC is located under left side of instrument panel. Retrieve continuous DTCs stored in GEM. Clear continuous DTCs. Perform on-demand self-test and note all DTCs. If DTC(s) exist, service DTCs in numerical order. See TEST E DTC INDEX table. If no DTCs exist, go to next step.
    TEST E DTC INDEX

    DTC Go To Step
    B1342 (1)
    B1450 2
    B1453 2
    B1458 8
    B1460 8
    (1) Replace GEM, clear DTC(s) and retest system.
  2. Turn ignition on. Using NGS tester, monitor PID WPMODE while turning wiper switch through all positions. If PID values agree with switch position, go to next step. If PID values do not agree with switch position, go to step 5).
  3. Turn ignition on. Using NGS tester, monitor PID WASH_SW. Press washer switch. If PID WASH_SW indicates ON when switch is pressed and OFF when switch is released, go to step 8). If PID WASH_SW does not indicate as described, go to next step.
  4. Turn ignition off. Disconnect multifunction switch 7-pin connector. Measure resistance between Gray/Red and Light Blue/Orange wires at multifunction switch 7-pin connector while depressing and releasing washer switch. If resistance is less than 5 ohms with switch depressed and greater than 10 k/ohms with switch released, go to next step. If resistance is not as specified, replace multifunction switch. Clear DTC(s) and retest system.
  5. Turn ignition off. Disconnect multifunction switch 7-pin connector and GEM 26-pin connector. Measure voltage of Light Blue/Orange wire at multifunction switch 7-pin connector. If voltage is indicated, repair Light Blue/Orange wire, clear DTC(s) and retest system. If no voltage is indicated, go to next step.
  6. Turn ignition off. Disconnect multifunction switch 7-pin connector and GEM 26-pin connector. Measure resistance of Light Blue/Orange wire between multifunction switch 7-pin connector and ground. If resistance is less than 10 k/ohms, go to next step. If resistance is greater than 10 k/ohms, repair open in Light Blue/Orange wire, clear DTC(s) and retest system.
  7. Turn ignition off. Disconnect multifunction switch 7-pin connector and GEM 26-pin connector. Measure resistance of Light Blue/Orange wire between multifunction switch 7-pin connector and GEM 26-pin connector terminal No.13. See Figure . If resistance is less than 5 ohms, replace GEM. If resistance is 5 ohms or greater, repair open in Light Blue/Orange wire. After repair, retest system.
  8. Turn ignition on. Using NGS tester, monitor PID WASHRLY while toggling active command WASHRLY. If WASHRLY PID agrees with command WASHRLY and displays ON--- and OFF---, go to step 16). If WASHRLY does not agree with command WASHRLY and displays OFFO-G, go to next step. If WASHRLY does not agree with command WASHRLY and displays ON-B-, go to step 14).
  9. Turn ignition off. Check fuse No. 12 (10-amp) located at interior panel behind left kick panel. If fuse is good, go to next step. If faulty, replace fuse and retest system. If fuse blows again, repair short to ground. See WIRING DIAGRAMS  .
  10. Turn ignition off. Disconnect washer pump relay. Measure voltage at washer pump relay terminals No. 1 and 5 (both have White/Black wire). If both readings are 10 volts or greater, go to next step. If reading(s) is less than 10 volts, repair wire(s)as necessary, clear DTC(s) and retest system.
  11. Check washer pump relay. See RELAYS  under COMPONENT TESTS. If relay is good, go to next step. If faulty, replace relay, clear DTC(s) and retest system.
  12. Disconnect GEM 26-pin connector. Measure resistance of Tan/Red wire between GEM 26-pin connector terminal No. 24 and washer pump relay terminal No. 2. See Figure and Figure . If resistance is less than 5 ohms, go to next step. If resistance is 5 ohms or greater, repair open in Tan/Red wire, clear DTC(s) and retest system.
  13. Measure resistance of Tan/Red wire between washer pump relay connector terminal No. 2 and ground. If resistance is greater than 10 k/ohms, replace GEM. If resistance is less than 10,000 ohms, repair Tan/Red wire, clear DTCs and retest system.
  14. Turn ignition off. Disconnect washer pump relay and GEM 26-pin connector. Turn ignition on. Measure voltage of Tan/Red wire at washer pump relay connector terminal No. 2. See Figure . If voltage is indicated, repair short to power in Tan/Red wire. If no voltage is indicated, replace GEM. After repair, clear DTC(s) and retest system.
  15. Check washer pump relay. See RELAYS  under COMPONENT TESTS. If relay is good, replace GEM. If faulty, replay washer pump relay. After repair, clear DTC(s) and retest system.
  16. Turn ignition off. Disconnect washer pump relay connector. Turn ignition on. Connect a jumper wire between washer pump relay terminal No. 1 (White/Black wire) and terminal No. 3 (Black/White wire). See Figure . If washer pump does not operate, remove jumper wire and go to next step. If washer pump operates, replace washer pump relay. After repair, clear DTC(s) and retest system.
  17. Turn ignition off. Disconnect washer pump harness connector. Measure resistance of Black/White wire between washer pump harness connector and washer pump relay terminal No. 3. See Figure . If resistance is less than 5 ohms, go to next step. If resistance is 5 ohms or greater, repair open in Black/White wire, clear DTC(s) and retest system.
  18. Measure resistance of Black wire between washer pump harness connector and ground. If resistance is less than 5 ohms, replace washer pump. If resistance is 5 ohms or greater, repair Black wire and ground connection as necessary. After repair, clear DTC(s) and retest system.
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