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Test R: Washer Pump Does 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. Remove key from ignition switch. Connect jumper wire between CTM test connector terminals. Retrieve DTCs stored in CTM. If DTC(s) exist, service DTCs in numerical order. See TEST R DTC INDEX TABLE. If no DTCs exist, go to next step.
    TEST R DTC INDEX

    DTC Go To Step
    12 2
    13 2
    14 (1)
    15 (1)
    31 6
    (1) Replace CTM, clear DTC(s) and retest system.
  2. Turn ignition on. To enter CTM input test mode, connect jumper wire between CTM test connector terminals. Monitor CTM tone while turning wiper switch through all positions. If CTM tone activates, exit CTM test mode by removing jumper wire and go to step 6). If CTM tone does not activate, exit CTM test mode by removing jumper wire and go to next step.
  3. Check wiper switch. See WIPER SWITCH  under COMPONENT TESTS. If switch is good, go to next step. If faulty, replace switch, clear DTC(s) and retest system.
  4. Turn ignition off. Disconnect CTM 26-pin connector and multifunction switch 7-pin connector. Turn ignition on. Measure voltage of Light Blue/Orange wire at multifunction switch 7-pin connector. If no voltage is indicated, go to next step. If any voltage is indicated, repair short to power in Light Blue/Orange wire, clear DTC(s) and retest system.
  5. Turn ignition off. Disconnect CTM 26-pin connector and multifunction switch 7-pin connector. Measure resistance of Light Blue/Orange wire between CTM 26-pin connector and multifunction switch 7-pin connector. If resistance is less than 5 ohms, replace CTM. If resistance is 5 ohms or greater, repair open in Light Blue/Orange wire. After repair, clear DTC(s) and retest system.
  6. Turn ignition off. Disconnect washer pump relay. Turn ignition on. Measure voltage at washer pump relay connector terminal No. 5 (White/Black wire). See Figure . If reading is 10 volts or greater, reconnect washer pump relay and go to next step. If reading is less than 10 volts, repair White/Black wire as necessary, clear DTC(s) and retest system.
  7. Turn ignition off. Disconnect washer pump relay. Turn ignition on. Connect jumper wire between CTM connector terminal No. 24 (Tan/Red wire) and ground. See Figure . If washer pump does not operate, remove jumper wire and go to step 9). If washer pump operates, remove jumper wire and go to next step.
  8. Turn ignition off. Disconnect washer pump relay. Measure resistance between relay connector terminal No. 2 (Tan/Red wire) and ground. See Figure . If resistance is greater than 10 k/ohms, replace CTM. If resistance is less than 10 k/ohms, repair short to ground in Tan/Red wire. After repair, clear DTC(s) and retest system.
  9. Turn ignition off. Disconnect washer pump relay. Check washer pump relay. See RELAYS  under COMPONENT TESTS. If relay is good, go to next step. If faulty, replace washer pump relay, clear DTC(s) and retest system.
  10. Measure resistance of Tan/Red wire between washer pump relay connector terminal No. 2 and CTM 26-pin connector terminal No. 24. See Figure and Figure . If resistance is 5 ohms or less, go to next step. If resistance is greater than 5 ohms, repair open in Tan/Red wire, clear DTC(s) and retest system.
  11. Turn ignition on. Measure voltage at CTM 26-pin connector terminal No. 24 (Tan/Red wire). See Figure . If no voltage is indicated, go to next step. If voltage is indicated, repair short to power in Tan/Red wire. Clear DTC(s) and retest system.
  12. Turn ignition off. Disconnect washer pump harness connector. Measure resistance of Black/White wire between washer pump harness connector and washer pump relay connector terminal No. 3. See Figure . If resistance is 5 ohms or less, go to next step. If resistance is greater than 5 ohms, repair open in Black/White wire, clear DTC(s) and retest system.
  13. Turn ignition off. Disconnect washer pump harness connector. 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 greater than 5 ohms, repair Black wire as necessary. After repair, clear DTC(s) and retest system.
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