Drivetrain Control Module (DTCM)

U0402-IMPLAUSIBLE DATA RECEIVED FROM TCM

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

- When Monitored:
With the ignition on for four seconds, no CAN bus circuit error condition present, no lost communication with Transmission Control Module (TCM) condition present and no system undervoltage or overvoltage condition present.

- Set Condition:
The Drive Train Control Module (DTCM) is receiving implausible data for gear or PRNDL position from the TCM.





1. DTC IS ACTIVE

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

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

Is the status Active for this DTC?

Yes

- Go To 2

No

- Go To 3

2. CHECK FOR TCM DTCS
1. Ignition on, engine not running.
2. With the scan tool, read the DTCs in the TCM.

Are there any TCM DTCs present?

Yes

- Testing and Inspection Perform the appropriate diagnostic procedure.

No

- Replace the Drive Train Control Module (DTCM).
- Perform the DTCM VERIFICATION TEST. DTCM Verification Test.

3. INTERMITTENT WIRING HARNESS AND CONNECTORS
1. The conditions necessary to set this DTC are not present at this time.
2. Using the wiring diagram/schematic as a guide, inspect the wiring harness and connectors.
3. Wiggle test the wiring harness and connectors while monitoring the scan tool data relative to this circuit.
4. Look for the data to change or for the DTC to reset during the wiggle test.

Were any problems found?

Yes

- Repair as necessary.
- Perform the DTCM VERIFICATION TEST. DTCM Verification Test.

No

- Test complete.