Windshield Wiper Test 8A - Wipers Operate In High Speed Only
NOTE:
Perform WINDSHIELD WIPER TEST 1A
before proceeding with this test. For connector terminal identification, see CONNECTOR IDENTIFICATION in BODY CONTROL COMPUTER INTRODUCTION. Perform TEST VER-1A
after each repair.
CAUTION:
Always turn ignition switch to OFF position prior to disconnecting or connecting any module connector.
- Disconnect HI/LO wiper relay. See Figure in WINDSHIELD WIPER TEST 2A . Replace original HI/LO wiper relay with a known good relay. Turn ignition on and activate wipers. If wipers do not operate properly in low and high speed modes, go to next step. If wiper operate properly in low and high speed modes, replace original HI/LO wiper relay.
- Turn ignition off. Disconnect engine 14-pin connector at BCM. See Figure in CHIME TEST 3A . Ensure connector is clean and not damaged. Remove substitute HI/LO wiper relay. Using scan tool in ohmmeter mode, check resistance of engine 14-pin connector terminal No. 8 (Violet/Pink wire). If resistance is more than 5 ohms, replace BCM. If resistance is less than 5 ohms, repair short to ground in Violet/Pink wire.