Powertrain Control Module (PCM)

U0403-IMPLAUSIBLE DATA RECEIVED FROM T-CASE

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 CAN C Bus circuit from the Transfer Case Control Module / AWD.





Always perform the Pre-Diagnostic Troubleshooting procedure before proceeding. Pre-Diagnostic Troubleshooting Procedure.

1. ACTIVE DTC

NOTE: Diagnose all CAN communication DTCs before continuing.

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

Is the status Active for this DTC?

Yes

- Go To 2

No

- Perform the Stored Lost Communication DTCs diagnostic procedure. Stored Lost Communication DTCs

2. COMMUNICATION DTCS PRESENT IN THE TRANSFER CASE CONTROL MODULE
1. With a scan tool check for DTCs in the Transfer Case Control Module / AWD.

Are there any CAN bus DTCs active in the Transfer Case Control Module at this time?

Yes

- Perform the U0102-Lost Communication with Transfer Case Control Module / AWD diagnostic procedure. U0102

No

- Replace and program the Powertrain Control Module (PCM). PCM/ECM Reprogramming
- Perform the POWERTRAIN VERIFICATION TEST. Powertrain Verification Test.