Diagnostic Procedure
WARNING: This page is about a different variant/trim than selected.
- STEP 1. Troubleshoot the CAN system if diagnostic trouble code U0121 is set.
Q: Is the diagnostic trouble code U0121 set?
- YES: Diagnose the CAN system.
- NO: Go to Step 2.
- STEP 2. Scan tool data list
- Item 21: Vehicle speed (inference)
- Item 22: Real vehicle speed
OK: Vehicle speed signal and vehicle speed do not differ greatly.
Q: Is the check result normal?
- YES: Intermittent malfunction
- NO: Go to Step 3.
- STEP 3. Check ABS-related diagnostic trouble codes.
Q: Is the ABS-related diagnostic trouble code set?
- YES: Carry out the appropriate troubleshooting.
- NO: Go to Step 4.
- STEP 4. Symptom recheck after erasing diagnostic trouble code
Q: Is the check result normal?
- YES: Intermittent malfunction
- NO: Replace TCM.