Wipers Not Operating In Low Speed Mode
NOTE:
Perform WINDSHIELD WIPER TEST 1A before proceeding with this test. For connector terminal identification and wiring diagrams, see
BODY CONTROL COMPUTER - INTRODUCTION article. Perform VERIFICATION TEST: VER-2A after each repair.
CAUTION:
Always turn ignition switch to OFF position prior to disconnecting or connecting any module connector.
- Disconnect wiper HI/LO relay from Power Distribution Center. See Figure. PDC is located in engine compartment. See Figure.
- Ensure ignition is off. Turn wiper switch to LOW speed position. Using external ohmmeter, measure resistance between ground and terminal "A" (Red wire) on HI/LO relay socket. If resistance is less than 100 ohms, repair Red wire for short to ground. If resistance is 100 ohms or greater, go to next step.
- Connect jumper wire between terminals "B" and "E" on HI/LO relay socket. Turn ignition on. If wiper motor operates in low speed, replace HI/LO wiper relay. If wiper motor does not operate in low speed, go to next step.
- Disconnect wiper motor connector. Do not disconnect jumper wire. Using external voltmeter, measure voltage between ground and terminal No. 2 (Brown/White wire) on wiper motor harness connector. If voltage is 10 volts or less, repair open Brown/White wire. If voltage is greater than 10 volts, replace wiper motor.