Powertrain Control Module (PCM)

U0140-LOST COMMUNICATION WITH BODY CONTROL MODULE (BCM)

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

- When Monitored:
With the ignition on.

Battery voltage between 10.0 and 17.0 Volts.

Body Control Module (BCM) is configured correctly.

- Set Condition:
The module has not received a Body Control Module (BCM) Bus message over the CAN C bus for approximately two to five seconds. The circuit is continuously monitored.





Diagnostic Test
ACTIVE DTC

NOTE: For vehicle communication problems, use the scan tool to refer to the Network Review Screen. The screen depicts a high level view of the vehicle network. Fault and problem areas appear in red. Selecting any of the network components allows access to the source of the problem.

1. Ignition on, engine not running.
2. With a scan tool, select View DTCs.

Is the status Active for this DTC?

Yes

- Manufacturer Code Charts and perform the No Response From the Body Control Module (BCM) diagnostic procedure.

No

- Manufacturer Code Charts and perform the Stored Lost Communication DTCs diagnostic procedure.