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Test 78C - Intermittent Wiper Switch Circuit

NOTE: For connector terminal identification, see CONNECTOR IDENTIFICATION  . For appropriate wiring diagram, see WIRING DIAGRAMS  at end of article.
  1. Using DRB-II, stop wiper motor test. Ensure wiper switch is still in intermittent mode. Using DRB-II, read intermittent wiper sensor voltage. If voltage is between one and 12 volts, replace Body Control Module (BCM). Perform VERIFICATION PROCEDURE VER-1. If voltage is not between one and 12 volts, turn ignition off.
  2. Disconnect BCM Black connector. BCM is located behind right side kick panel. Check connector condition, and clean or repair connector as necessary. Put DRB-II in voltmeter mode. Turn ignition on (engine off). Check voltage on terminal No. 17 (Dark Green/White wire) of BCM Black connector.
  3. If voltage is between one and 12 volts, replace BCM. Perform VERIFICATION PROCEDURE VER-1. If voltage is not between one and 12 volts, access multifunction switch 24-pin connector. See Figure . Backprobe terminal No. 1 (Dark Green/White wire) of multifunction switch 24-pin connector.
  4. If voltage is between one and 12 volts, repair open Dark Green/White wire. Perform VERIFICATION PROCEDURE VER-1. If voltage is not between one and 12 volts, turn ignition off. Disconnect multifunction switch 24-pin connector. Check connector condition, and clean or repair connector as necessary.
  5. Using DRB-II in ohmmeter mode, check resistance on terminal No. 1 (Dark Green/White wire) of multifunction switch 24-pin connector. If resistance is less than 5 ohms, repair short to ground in Dark Green/White wire. Perform VERIFICATION PROCEDURE VER-1. If resistance is more than 5 ohms, replace multifunction switch. Perform VERIFICATION PROCEDURE VER-1.
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