U0431

U0431-IMPLAUSIBLE DATA RECEIVED FROM FCM (FDCM)

For a complete wiring diagram Consult Diagrams/Electrical

- When Monitored:
With the ignition on for 4 seconds, no CAN BUS circuit error condition present, no lost communication with FCM condition present, and no system undervoltage or overvoltage condition present.

- Set Condition:
The Final Drive Control Module is receiving no message or implausible data for Ambient Temperature from the FCM.





Diagnostic Test

1. FRONT CONTROL MODULE DTCS PRESENT
Ignition on, engine not running.
With the scan tool, read DTCs in the Front Control Module.
Are there any DTCs present?

Yes

- Diagnose and repair the DTC(s).
- Perform the TRANSFER CASE VERIFICATION TEST-VER 1. Transfer Case Verification Test.

No

- Replace the Final Drive Control Module.
- Perform the TRANSFER CASE VERIFICATION TEST-VER 1. Transfer Case Verification Test.