Powertrain Control Module (PCM)

U0402-00-IMPLAUSIBLE DATA RECEIVED FROM TCM

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

- When Monitored:

Continuously while the system is active.

- Set Condition:

An error message has been received over the BUS from the Transmission Control Module (TCM).

Possible Causes:

NOTE: Always perform the Pre-Diagnostic Troubleshooting procedure before proceeding.

1. ACTIVE DTC

NOTE: Diagnose all CAN B and C communication DTCs before continuing.

1. Ignition on, engine not running.
2. With the scan tool, view DTCs.

Is the status Active for this DTC?

Yes

- Go To 2

No

- Perform the INTERMITTENT CONDITION TEST diagnostic procedure.


2. TCM COMMUNICATION RELATED DTCS IN OTHER MODULES


1. With the scan tool, select Network Diagnostics.

Is there more than one module with active DTCs "Logged Against" the TCM at this time?

Yes

- Replace and program the Transmission Control Module (TCM).
- Perform the NAG1 TRANSMISSION VERIFICATION TEST. NAG1 Transmission Verification Test

No

- Replace and program the Powertrain Control Module.
- Perform the POWERTRAIN VERIFICATION TEST. Powertrain Verification Test