40/41TE

U0101-LOST COMMUNICATION WITH ECM/PCM

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

- When Monitored:
With the ignition on, battery voltage between 9 and 16 volts, and engine run time greater than 3 seconds.

- Set Condition:
An expected bus message is not received for a specific amount of time.





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. Turn the ignition on.
2. With a scan tool, select View DTCs.

Is the status Active for this DTC?

Yes

- Totally Integrated Power Module (TIPM) Perform the diagnostic procedure for U0101 Loss of Communication with ECM/PCM.

No

- Perform the CHECKING FOR AN INTERMITTENT DTC Diagnostic Procedure. Checking for an Intermittent DTC
- Perform the PCM Verification Test. PCM Verification Test.