U0431-IMPLAUSIBLE DATA RECEIVED FROM FCM (FDCM)
For a complete wiring diagram Refer to Section 8W
- 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 PRESENTIgnition on, engine not running.
With the scan tool, read DTCs in the Front Control Module.
Are there any DTCs present?
Yes
- Refer to the symptom list and perform the applicable diagnostic procedure.
- Perform the TRANSFER CASE VERIFICATION TEST-VER 1 (Refer to 21 - TRANSMISSION/TRANSAXLE/TRANSFER CASE - STANDARD PROCEDURE).
No
- Replace the Final Drive Control Module in accordance with the Service Information.
- Perform the TRANSFER CASE VERIFICATION TEST-VER 1 (Refer to 21 - TRANSMISSION/TRANSAXLE/TRANSFER CASE - STANDARD PROCEDURE).