Inspection Procedure 1: When the Brake Pedal is Depressed, Auto-cruise Control is not Cancelled.


COMMENTS ON TROUBLE SYMPTOM


The stop lamp switch circuit is suspected.

PROBABLE CAUSE



DIAGNOSIS

STEP 1. M.U.T.-III data list.

  • Item 135: Stop lamp switch
  • Item 134: Brake switch
(Refer to data list reference table ).

Q. Is the check result normal?
Go to Step 2.
Check the stop lamp switch system (Refer to - Diagnosis Code Procedures, Code No. P1571: Stop lamp switch system). Then go to Step 3.

STEP 2. Retest the system.

Q. Does the brake pedal depressed, auto-cruise control system is 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 3.

STEP 3. Retest the system.

Q. Does the brake pedal depressed, auto-cruise control system is cancelled?
The procedure is complete.
Return to Step 1.