Circuit/System Testing

Rear Wiper Washer Switch Circuit Test

1. Ignition OFF, disconnect the harness connector X4 at the turn signal multifunction switch.
2. Ignition On, verify that a test lamp illuminates between the ignition circuit terminal 1 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 .
3. If all circuits test normal replace the turn signal multifunction switch.

Rear Wiper Motor Circuit Test

1. Ignition OFF, disconnect the harness connector at the rear window wiper motor.
2. Test for less than 1.0 ohm between the ground circuit terminal D and ground.
   • If greater than the specified range, test the ground circuit for an open/high resistance.
3. Verify that a test lamp illuminates between the B+ circuit terminal E and ground.
   • If the test lamp does not illuminate, test the B+ circuit for an open/high resistance or short to ground.
4. Ignition ON, test for B+ at the signal circuit terminal A while the rear window wiper switch is in the delay and on switch positions.
   • If B+ is not present, test the signal circuit for an open/high resistance or short to ground. If the circuit tests normal replace the turn signal multifunction switch.
5. If all circuits test normal replace the rear window wiper motor.