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Wipers Operate In With Switch In Off Position

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.
  1. Disconnect Body Control Module (BCM) Black 24-pin connector C2. BCM is mounted to junction block located behind left end cap of instrument panel. See Figure.
  2. Disconnect BCM Bone 12-pin connector C3. If wipers stop, replace BCM. If wipers still operate, go to next step.
  3. Disconnect wiper ON/OFF relay from Power Distribution Center (PDC). See Figure. PDC is located in engine compartment. See Figure. If wipers stop, repair Red/White wire (wiper ON/OFF relay control circuit) between ON/OFF relay and terminal No. 4 on BCM Bone 12-pin connector C3 for short to ground. If wipers still operate, repair Red/Yellow wire (wiper HI speed output circuit) or Brown/White wire (wiper LO speed output) between wiper HI/LO relay and wiper motor for short to battery voltage.
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