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Test 106A - Wiper Motor Low Speed Operation

NOTE: For connector terminal identification, see CONNECTOR IDENTIFICATION  . For wiring diagrams, see appropriate article in ENGINE PERFORMANCE:
  1. Using scan tool, actuate wiper motor low speed. If wipers operate in low speed mode, go to step 6). If wipers do not operate in low speed, go to next step.
  2. Remove high/low wiper relay (relay No. 10) from Power Distribution Center (PDC). PDC is located on left front fender apron. See Figure . Go to next step.
  3. Connect a jumper wire between high low relay connector terminals "A" (Dark Blue wire) and "E" (Brown/White wire). If wiper motor operates in low speed mode, replace high/low wiper relay. If wiper motor does not operate in low speed mode, go to next step.
  4. Leave jumper wire connected. Disconnect wiper motor connector. Connector is located on engine compartment firewall, just right of power brake booster. Go to next step.
  5. Using scan tool in voltmeter mode, check voltage on wiper motor connector terminal No. 4 (Brown/White wire). If voltage is less than 10 volts, repair open Brown/White wire. If voltage is more than 10 volts, replace wiper motor.
  6. Stop wiper motor low speed actuation. Gain access to Body Control Module (BCM). BCM is located behind right kick panel. Leave BCM connectors connected. Move wiper switch to low. Go to next step.
  7. Using scan tool in voltmeter mode, backprobe BCM Bone connector terminal No. 16 (Dark Green/Red wire). If voltage is more than 6 volts, replace BCM. If voltage is less than 6 volts, replace multifunction switch.
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