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Test 34A - Washer Pump Operation

NOTE: For connector terminal identification, see CONNECTOR IDENTIFICATION  . For appropriate wiring diagram, see WIRING DIAGRAMS  at end of article.
  1. Check windshield washer pump operation. If washer pump does not operate, go to step 3). If washer pump operates, turn ignition off. Disconnect Body Controller Module (BCM) Bone connector. Module is located behind right kick panel.
    CAUTION: DO NOT  keep washer button pressed longer than necessary to test for voltage. Damage to washer pump may occur.
  2. Turn ignition on. While pressing windshield washer button on end of wiper/washer stalk, use DRB-II in voltmeter mode to check voltage on BCM Bone connector terminal No. 10, washer pump control circuit (Brown wire). If voltage is less than 10 volts, repair open circuit in Brown wire between BCM and switch. Perform VERIFICATION PROCEDURE VER-1. If voltage is more than 10 volts, replace BCM. Perform VERIFICATION PROCEDURE VER-1.
  3. Check if windshield wipers operate. If wipers operate, go to TEST 34B. If wipers do not operate, turn ignition off. Disconnect Body Controller Module (BCM) Bone connector and multifunction switch connector. Multifunction switch connector is located on upper part of steering column, behind trim cover.
  4. Using a external ohmmeter, check resistance of washer pump control circuit (Brown wire) between multifunction switch connector and terminal No. 10 of BCM Bone connector. If resistance is more than 5 ohms, repair open circuit in Brown wire. Perform VERIFICATION PROCEDURE VER-1. If resistance is less than 5 ohms, replace multifunction switch. Perform VERIFICATION PROCEDURE VER-1.
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