Rear Wiper System

REAR WIPER SYSTEM

The rear window wiper system operates in several modes:

- Intermittent wipe
- Wash
- Wipe after wash

1. Turn the ignition switch to the On position. Check for battery voltage at the fused ignition switch output (RUN/ACCESSORY) fuse in the fuse block. If OK, turn the ignition switch to the Off position and go to STEP 2. If not OK, repair the open fused ignition switch output (RUN/ACCESSORY) circuit to the ignition switch as required.
2. Disconnect and isolate the battery negative cable. Disconnect the rear windshield wiper/washer switch wire harness connector. Reconnect the battery negative cable. Turn the ignition switch to the ON position. Check for battery voltage at the fused ignition switch output (RUN/ACCESSORY) circuit cavity of the instrument panel wire harness connector for the rear windshield wiper and washer switch. If OK, go to STEP 3. If not OK, repair the open fused ignition switch output (RUN/ACCESSORY) circuit to the fuse block fuse as required.
3. Turn the ignition switch to the OFF position. Disconnect and isolate the battery negative cable.
4. Remove the liftgate inner trim panel. Disconnect the liftgate wire harness connector from the rear wiper motor. Check for continuity between the ground circuit cavity of the liftgate wire harness connector for the rear wiper motor and a good ground. There should be continuity. If not OK, repair the open ground circuit to ground as required.
5. Reconnect the battery negative cable. Check for battery voltage at the fused B(+) circuit cavity of the liftgate wire harness connector for the rear wiper motor. If not OK, repair the open fused B(+) circuit to the fuse block fuse as required.
6. Turn the rear wiper switch to the ON position. Check for battery voltage at the rear wiper motor control circuit cavity of the liftgate wire harness connector. If OK, replace the faulty rear wiper motor. If not OK, repair the open rear wiper motor control circuit to the wiper and washer switch as required.