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Windshield Wiper Test 5B - Intermittent Wipers Inoperative

NOTE: Perform POWER WINDOW TEST 5A  before proceeding with this test. For connector terminal identification, refer to CONNECTOR IDENTIFICATION  . For wiring diagrams, refer to WIRING DIAGRAMS  . Refer to WIPER/WASHER SYSTEM article. After each repair, perform TEST VER-1A  .
CAUTION: Always turn ignition switch to OFF position prior to disconnecting any module connector. Ensure all connectors are clean and tight.
  1. Using scan tool, access BODY SENSORS. Monitor INTERMITTENT WIPER voltage. Turn stalk switch from low to high intermittent position. If voltage changes about 2-12 volts, replace Body Control Module (BCM). BCM is located under left side of dash. See Figure in CHIME TEST 3A. If voltage does not change about 2-12 volts, go to next step.
  2. Disconnect 24-pin multifunction switch connector. Using an ohmmeter, measure resistance between ground and terminal No. 1 (Light Green/White wire) on multifunction switch connector. If resistance is less than 5 ohms, repair Light Green/White wire for short to ground. If resistance is 5 ohms or greater, go to next step.
  3. Disconnect BCM Black 24-pin connector. Using ohmmeter, measure resistance between terminal No. 18 (Light Green/White wire) on BCM Black 24-pin connector and terminal No. 1 on multifunction switch 24-pin connector. If resistance is less than 5 ohms, replace multifunction switch. If resistance is 5 ohms or more, repair open in Light Green/White wire.
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