B182B

B182B-TRUNK/GATE RELEASE CONTROL CIRCUIT OPEN - BCM





For a complete wiring diagram Consult Diagrams/Electrical

- When Monitored:
Continuously for non power liftgate vehicles

- Set Condition:
When the Body Control Module senses there is no resistance on the (P31) Liftgate Release Driver circuit after receiving a release command for longer than 125 ms, it will not send any current out on that circuit and will set this DTC.





Diagnostic Test

1. DTC PRESENT
Ensure vehicle is unlocked before proceeding.
Turn the ignition on.
With the scan tool, record and erase DTC's.
With the scan tool, read DTC's.
Operate the Liftgate Release several times from the Liftgate Handle Switch while monitoring the scan tool.
Does the scan tool display B182B-TRUNK/GATE RELEASE CONTROL CIRCUIT OPEN - BCM?

Yes

- Go To 2

No

- Using the wiring diagram/schematic as a guide, inspect the wiring and connectors for an intermittent condition.
- PERFORM the BODY VERIFICATION TEST - VER 1. Body Verification Test.

2. LIFTGATE RELEASE MOTOR OPEN




Disconnect the Liftgate Latch connector.
Using a 12-volt test light, connect one end of the light to the (P31) Liftgate Release Driver circuit and the other end to the (Z245) Ground circuit in the harness connector.
Have someone operate the liftgate handle and observe the test light.
Does the test light illuminate brightly when the liftgate handle switch is activated?

Yes

- Replace the Liftgate Latch Assembly.
- PERFORM the BODY VERIFICATION TEST - VER 1. Body Verification Test.

No

- Go To 3

3. (Z245) GROUND WIRE OPEN




Turn the ignition off.
Turn all lights off.
Measure the resistance between body ground and the (Z245) Ground circuit in the Liftgate Latch connector.
Is the resistance below 5.0 ohms?

Yes

- Go To 4

No

- Repair the (Z245) Ground circuit for an open.
- PERFORM the BODY VERIFICATION TEST - VER 1. Body Verification Test.

4. (P31) LIFTGATE RELEASE DRIVER WIRE OPEN




Disconnect the Body Control Module C2 connector.
Measure the resistance of the (P31) Liftgate Release Driver circuit between the BCM C2 connector and the Liftgate Latch connector.
Is the resistance below 5.0 ohms?

Yes

- Disconnect the BCM harness connector(s). Check connectors - Clean/repair as necessary. If okay, replace the Body Control Module.
- PERFORM the BODY VERIFICATION TEST - VER 1. Body Verification Test.

No

- Repair the (P31) Liftgate Release Driver circuit for an open.
- PERFORM the BODY VERIFICATION TEST - VER 1. Body Verification Test.