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DTC B254F: IG status fault
 
 
 
 
TROUBLE JUDGMENT
When the camera-ECU does not receive any ignition switch status signals from the ETACS-ECU for 5 seconds, DTC No. B254F will be set.
 
 
TROUBLESHOOTING HINTS
  • The ETACS-ECU may be defective
  • The camera-ECU may be defective
  • The CAN bus may be defective
 
 
DIAGNOSIS
STEP 1. Using scan tool (M.U.T.-III), diagnose the CAN bus line.
Use the scan tool (M.U.T.-III) to diagnose the CAN bus lines.
Is the check result normal?
Go to Step 2.
Repair the CAN bus line (Refer to GROUP 54C - Troubleshooting ).
 
STEP 2. Using scan tool (M.U.T.-III), recheck the diagnostic trouble code.
Check if DTC No. U0141 is set.
Is the DTC set?
Troubleshoot diagnostic trouble code No.U0141 (Refer to ).
Go to Step 3.
 
STEP 3. Recheck for diagnostic trouble code.
Check again if the DTC is set in the camera-ECU.
(1) Erase the DTC.
(2) Turn the ignition switch from the "LOCK" (OFF) position to the "ON" position.
(3) Check if DTC is set.
Is the DTC set?
Replace the camera-ECU (Refer to ).
The trouble can be an intermittent malfunction (Refer to GROUP 00 - How to use Troubleshooting/Inspection Service Points - How to Cope with Intermittent Malfunction ).