Inspection Procedure 3: When the "CANCEL" Switch is Set to ON, Cruise Control is not Cancelled.


COMMENTS ON TROUBLE SYMPTOM



PROBABLE CAUSE



  • Malfunction of the cruise control switch.
  • Malfunction of the engine-ECU.

DIAGNOSIS PROCEDURE

STEP 1. Check the data list.
Using M.U.T.-III, check the data list (Refer to - data list reference table).

  • Item 285: Cruise control switch

Q. Is the check result normal?
Go to Step 2.
Refer to - Diagnosis Code Procedures, Code No.P0578: Cruise control switch stuck. Then go to Step 3.

STEP 2. Retest the system.

Q. When the "CANCEL" switch is set to ON, 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 ). When the Engine-ECU is replaced, register the encrypted code (Refer to GROUP 42C - Troubleshooting, ID Code Registration Necessity Judgment Table ). Then go to Step 3.

STEP 3. Retest the system.

Q. When the "CANCEL" switch is set to ON, is the cruise control cancelled?
The procedure is complete.
Return to Step 1.