U0402-IMPLAUSIBLE DATA RECEIVED FROM TCM (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 TCM condition present, and no system undervoltage or overvoltage condition present.
- Set Condition:
The Final Drive Control Module is receiving implausible data for gear or PRNDL position from the TCM.
| Possible Causes |
| TRANSMISSION DTCS PRESENT |
| FINAL DRIVE CONTROL MODULE (FDCM) |
Diagnostic Test
1. TRANSMISSION DTCS PRESENTIgnition on, engine not running.
With the scan tool, read DTCs in the Transmission 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).