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Wiper Park Switch Failure

WARNING: This page is about a different car, the 2002 Dodge Ram Wagon, 2002 Dodge Ram Van, 2001 Dodge Ram Wagon, and 2001 Dodge Ram Van. However, it is still accessible from the selected car via links, so may be relevant.

Monitored & Set Condition

  1. When Monitored: The ignition must be in the run position and battery voltage supplied to the BCM on the fused B+ circuit.
  2. Set Condition: The code will set if the BCM does not detect a low to high voltage transition on the wiper park switch sense circuit within 8 seconds after energizing the wiper relay On/Off relay.

Possible Causes:

  1. Verifying Active DTC Wiper Park Switch Failure
  2. Windshield Wiper Motor
  3. Central Timer Module
  4. Wiper Park Switch Sense Shorted To Battery

Testing

  1. Connect scan tool to Data Link Connector (DLC). Turn ignition on. Using scan tool, clear Diagnostic Trouble Codes (DTC). Turn ignition off, then on. Turn wiper switch to all positions including off. Using scan tool, read BODY DTCs. If WIPER PARK SWITCH FAILURE is displayed, go to next step. If WIPER PARK SWITCH FAILURE is not displayed, system is currently functioning properly.
  2. Turn ignition off. Disconnect windshield wiper motor 4-pin connector. Turn ignition on. Measure voltage between windshield wiper motor connector terminal No. 3 (Dark Green wire) and ground. See Figure . If any voltage is present, leave windshield wiper motor connector disconnected and go to next step. If voltage is not present, replace windshield wiper motor.
  3. Turn ignition off. Disconnect Central Timer Module (CTM) connector C1. Turn ignition on. Measure voltage between CTM connector C1 terminal No. 11 (Dark Green wire) and ground. See Figure . If any voltage is present, repair short to voltage in Dark Green wire. If voltage is not present, replace CTM.
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