Body Control System

U0431-IMPLAUSIBLE DATA RECEIVED FROM FCM (FDCM)

- 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.

Possible Causes
FRONT CONTROL MODULE DTCS PRESENT
FINAL DRIVE CONTROL MODULE (FDCM)

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 >>Perform the applicable diagnostic procedure.
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