U0212-LOST COMMUNICATION WITH SCM
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 volts and 16.0 volts.
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Set Condition:
The Transmission Control Module (TCM) fails to receive bus messages from the Steering Control Module (SCM) for approximately 500 ms.
Possible Causes |
|---|
| CAN B OR CAN C BUS CIRCUITS OPEN OR SHORTED |
| DTCs RELATED TO BATTERY VOLTAGE, IGNITION, OR VIN MESSAGES |
| CAN C BUS CIRCUITS OPEN OR SHORTED |
| STEERING CONTROL MODULE (SCM) POWER AND GROUND |
| STEERING CONTROL MODULE (SCM) |
| MODULE THAT SET THIS DTC |
VERIFY THE DTC IS ACTIVE
| NOTE: | For vehicle communication problems, use the scan tool to refer to the Network Review Screen. This 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, read DTCs. |
Is the DTC active at this time?
Yes
- (Refer to 28 - DTC-Based Diagnostics/MODULE, Totally Integrated Power (TIPM) - Diagnosis and Testing) and perform the U0212-Lost Communication with SCM diagnostic procedure.
No
- (Refer to 29 - Non-DTC Diagnostics/Communication - Diagnosis and Testing) and perform the Stored Lost Communication DTCs diagnostic procedure.