B25AB

B25AB-LIFTGATE UNLOCK CONTROL CIRCUIT LOW





For a complete wiring diagram, refer to the Wiring Information.

- When Monitored:
With the ignition on.

Liftgate Unlock Relay inactive.

- Set Condition:
When the Totally Integrated Power Module (TIPM) detects the Liftgate Unlock Relay Control circuit is open.





1. INTERMITTENT CONDITION
1. Turn the ignition on.
2. With the scan tool, clear all DTCs.
3. Cycle the ignition from off to on.
4. With the scan tool, read DTCs.

Does the scan tool display DTC: B25AB-LIFTGATE UNLOCK CONTROL CIRCUIT LOW?

Yes

- Go To 2

No

- Test complete, the condition or conditions that originally set this DTC are not present at this time. Using the wiring diagrams as a guide, check all related splices and connectors for signs of water intrusion, corrosion, pushed out or bent terminals, and correct pin tension.
- Perform the BODY VERIFICATION TEST. Body Verification Test.

2. CHECK THE LIFTGATE UNLOCK RELAY
1. Turn the ignition off.
2. Remove the Liftgate Unlock Relay and substitute it with a known good relay.
3. Turn the ignition on.
4. With the scan tool, clear all DTCs.
5. Cycle the ignition from off to on.
6. With the scan tool, read DTCs.

Does the scan tool display DTC: B25AB-LIFTGATE UNLOCK CONTROL CIRCUIT LOW?

Yes

- Go To 3

No

- Replace the Liftgate Unlock Relay.
- Perform the BODY VERIFICATION TEST. Body Verification Test.

3. CHECK THE (L177) LIFTGATE UNLOCK RELAY CONTROL CIRCUIT FOR AN OPEN




1. Turn the ignition off.
2. Reinstall the Liftgate Unlock Relay.
3. Disconnect the TIPM C1 harness connector.
4. Measure the voltage between ground and the (L177) Liftgate Unlock Relay Control circuit at the TIPM C1 harness connector.

Is the voltage above 10.0 volts?

Yes

- Replace the TIPM. Totally Integrated Power Module (TIPM) - Removal.
- Perform the BODY VERIFICATION TEST. Body Verification Test.

No

- Repair the open or high resistance in the (L177) Liftgate Unlock Relay Control circuit.
- Perform the BODY VERIFICATION TEST. Body Verification Test.