Circuit/System Testing

Liftglass Release Switch Circuit Test

1. Disconnect the BCM connector C6.
2. Connect a test lamp from battery voltage to the liftglass release switch circuit terminal in the harness connector.
3. Verify the test lamp is not illuminated while the release switch is inactive.
   • If the test lamp remains illuminated the signal circuit is shorted to ground or the switch contacts are shorted closed.
4. Verify the test lamp is illuminated while the release switch is active.
   • If the test lamp does not illuminate an open is present in the signal circuit, switch or ground.
5. If the release switch circuits test normal replace the BCM.

Liftglass Release Output Circuit Test

1. Disconnect the rear wiper motor connector.
2. Ignition ON, verify that battery voltage is present on the liftglass latch release signal circuit while the liftglass release switch is activated.
   • If battery voltage is not present, test the liftglass latch release signal circuit for an open or high resistance. If the circuit tests normal replace the BCM.
3. Connect the rear wiper motor connector.
4. Disconnect the liftglass latch actuator connector. Connect a test lamp from the latch actuator control circuit terminal to the ground circuit terminal in the harness connector.
5. Verify that the test lamp illuminates when the liftglass release switch is activated.
   • If the test lamp does not illuminate test the control and ground circuits for an open or short to ground. If the circuits test normal replace the rear wiper motor module.
6. If the liftglass release output circuits test normal replace the liftglass latch release actuator.