Inspection Procedure 1: When the Brake Pedal is Depressed, Cruise Control is not Cancelled.




COMMENTS ON TROUBLE SYMPTOM




PROBABLE CAUSES




DIAGNOSIS PROCEDURE


caution
  • If there is any problem in the CAN bus lines, an incorrect diagnosis code may be stored. Prior to this diagnosis, diagnose the CAN bus lines.
  • Before replacing the ECU, ensure that the CAN bus lines is normal.

STEP 1. Check the CAN bus system diagnosis.


Using M.U.T.-III, perform CAN bus diagnosis (Refer to GROUP 54C - Explanation About The M.U.T.-III Can Bus Diagnostics ).

Q. Is the check result satisfactory?

Go to Step 2.
Repair the CAN bus lines (Refer to GROUP 54C - Troubleshooting, Can Bus Diagnostic Table ). Then go to Step 4.

STEP 2. Check the data list.


Using M.U.T.-III, check the data list (Refer to data list reference table ).

  • Item 134: Brake switch
  • Item 135: Stop lamp switch

Q. Is the check result normal?

Go to Step 3.
Check the stop lamp switch system (Refer to - Diagnosis Code Procedures, Code No. P0504: Malfunction of the stop lamp switch system). Then go to Step 4 .

STEP 3. Check the symptom.


Q. When the brake pedal is depressed, is the cruise control cancelled?

It can be assumed that this malfunction is intermittent (Refer to GROUP 00 - How to Use Troubleshooting/Inspection Service Points, How to Cope with Intermittent Malfunction ).
Replace the engine-ECU (Refer to GROUP 13D - Engine-ECU ). Then go to Step 4.

STEP 4. Check the symptom.


Q. When the brake pedal is depressed, is the cruise control cancelled?

The procedure is complete.
Return to Step 1.