Windshield Wiper Test 5A - Intermittent Wipers Inoperative
NOTE:
Perform POWER WINDOW TEST 1A
before proceeding. For connector terminal ID, see CONNECTOR IDENTIFICATION
and WIRING DIAGRAM. See WIPER/WASHER SYSTEM
article. Perform TEST VER-1A
after each repair.
CAUTION:
Always turn ignition switch to OFF position prior to disconnecting any module connector. Ensure all connectors are clean and tight.
- Using scan tool, access WIPER MONITOR screen. Monitor I/WIPE voltage level. Turn stalk switch from low to high intermittent position. If voltage changes about 2.5-12 volts, replace Body Control Module (BCM). If voltage does not change about 2.5-12 volts, go to next step.
- Disconnect 24-pin multifunction switch connector. Using an ohmmeter, check resistance between BCM Black 24-pin connector terminal No. 1 (White wire) and multifunction switch 24-pin connector terminal No. 2 (White wire). If resistance is less than 5 ohms, replace multifunction switch. If resistance is 5 ohms or more, repair open in White wire.