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Inspection Procedure 5: A screen is not switched when the vehicle speed reaches a predetermined value.
 
 
 
 
COMMENT ON TROUBLE SYMPTOM
The camera-ECU switches the monitor screen according to a vehicle speed signal. If it is not switched, the vehicle speed signal system may be defective.
 
 
TROUBLESHOOTING HINTS
  • The camera-ECU may be defective
  • The CAN bus may be defective
  • The wiring harness or connectors may have loose, corroded, or damaged terminals, or terminals pushed back in the connector
 
 
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), check data list.
Using the camera-ECU data list.
  • Perform a test run of the vehicle.
 
Item No.Scan tool (M.U.T.-III) displayCheck conditionNormal condition
4Vehicle speed informationRunningEnable
Item No.Scan tool (M.U.T.-III) displayCheck conditionNormal condition
4Vehicle speed informationRunningEnable
Is the check result normal?
Go to Step 4.
Go to Step 3.
 
STEP 3. Using scan tool (M.U.T.-III), read the ETACS diagnostic trouble code.
Check if a vehicle speed signal-related DTC set in the ETACS-ECU.
Is the DTC set?
Diagnose the ETACS-ECU (Refer to ).
Go to Step 4.
 
STEP 4. Retest the system.
Is the check result normal?
The trouble can be an intermittent malfunction (Refer to GROUP 00 - How to use Troubleshooting/Inspection Service Points - How to Cope with Intermittent Malfunction ).
Replace the camera-ECU (Refer to ).