Inspection Procedure 3: When the Selector Lever is Set to "N" Position, Cruise Control is not Cancelled. <A/T>


OPERATION



COMMENTS ON TROUBLE SYMPTOM



  • Malfunction of CAN bus line.
  • The inhibitor switch circuit is suspected.

PROBABLE CAUSES



  • Malfunction of CAN bus system.
  • Damaged harness or connector.
  • Malfunction of the inhibitor switch.
  • Malfunction of the A/T-ECU.
  • Malfunction of the engine-ECU.

DIAGNOSIS PROCEDURE
caution
  • If there is any problem in the CAN bus lines, an incorrect diagnosis code may be set. 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 5.

STEP 2. Check the data list.
Using M.U.T.-III, check the data list (Refer to data list reference table ).

  • Item 42: Neutral switch

Q. Is the check result normal?
Go to Step 3.
Check the A/T system (Refer to GROUP 23C - Troubleshooting, Inspection Procedures for Diagnosis Code, Code No.P0705: Malfunction of Inhibitor Switch ). Then go to Step 5.

STEP 3. Check the A/T system diagnosis code.
Using M.U.T.-III, perform A/T system diagnosis code (Refer to GROUP 23C - Troubleshooting, Diagnosis Function ).

Q. Is any diagnosis code set?
Repair the A/T system (Refer to GROUP 23C - Troubleshooting, Diagnosis Code Chart ). Then go to Step 5.
Go to Step 4.

STEP 4. Check the symptom.

Q. When the selector lever is set to "N" position, 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 5.

STEP 5. Check the symptom.

Q. When the selector lever is set to "N" position, is the cruise control cancelled?
The procedure is complete.
Return to Step 1.