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Home >> Hummer >> 2008 >> H2 4D Utility Wagon >> Repair and Diagnosis >> Accessories & Equipment >> Wiper/Washer Systems >> Wipers And Washers >> Diagnostic Information and Procedures >> DTC B3922 >> Circuit/System Testing

Circuit/System Testing

  1. Ignition OFF, disconnect the X3 harness connector at the turn signal/multifunction switch.
  2. Ignition ON, verify the scan tool Windshield Wiper Switch parameter is not Switch Fault.
    • If Switch Fault, test the windshield wiper switch low signal circuit terminal N for a short to ground. If the circuit tests normal, replace the BCM.
  3. If all circuits test normal, test or replace the turn signal/multifunction switch.
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