Circuit/System Testing
WARNING: This page is about a different car, the 2016 GMC Acadia, 2016 Chevrolet Traverse, and 2016 Buick Enclave. However, it is still accessible from the selected car via links, so may be relevant.
- Ignition OFF, disconnect the harness connector at the multifunction switch - I/P.
- Ignition ON, verify a test lamp illuminates between the ignition circuit terminal 6 and ground.
- If the test lamp does not illuminate, test the ignition circuit for a short to ground or an open/high resistance. If the circuit tests normal, refer to Power Mode Mismatch .
- Ignition OFF, connect the harness connector at the multifunction switch - I/P. Disconnect the harness connector at the rear window wiper motor.
- Test for less than 20 Ω between the ground circuit terminal B and ground.
- If greater than the specified range, test the ground circuit for an open/high resistance.
- Ignition ON, verify a test lamp illuminates between the B+ circuit terminal A and ground.
- If the test lamp does not illuminate, test the B+ circuit for an open/high resistance.
- Verify a test lamp illuminates between the ignition circuit terminal E and ground.
- If the test lamp does not illuminate, test the ignition circuit for a short to ground or an open/high resistance.
- Rear wiper switch in the ON position, verify a test lamp illuminates between the signal circuit terminal D and ground.
- If the test lamp does not illuminate, test the signal circuit for a short to ground or an open/high resistance. If the circuit tests normal, test or replace the I/P switch assembly.
- If all circuits test normal, test or replace the rear window wiper motor.