U0140-LOST COMMUNICATION WITH BODY CONTROL MODULE (BCM)
For a complete wiring diagram, refer to the Wiring Information.
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When Monitored:
With the ignition on.
Battery voltage between 10.0 and 17.0 Volts.
Body Control Module (BCM) is configured correctly.
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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.
Possible Causes |
|---|
| CAN C BUS OPEN OR SHORTED CONDITION |
| BODY CONTROL MODULE (BCM) |
| MODULE THAT SET THIS DTC |
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
- (Refer to 29 - Non-DTC Diagnostics/Communication - Diagnosis and Testing) and perform the No Response From the Body Control Module (BCM) diagnostic procedure.
No
- (Refer to 29 - Non-DTC Diagnostics/Communication - Diagnosis and Testing) and perform the Stored Lost Communication DTCs diagnostic procedure.