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Inspection Procedure 4: When the CANCEL Switch is Pressed, Adaptive Cruise Control is not Cancelled.
 
 
cautionWhen the ACC/FCM-ECU is replaced, calibrate the radar (refer to ).
 
 
COMMENTS ON TROUBLE SYMPTOM
The cause is probably an open-circuit in the circuit inside the CANCEL switch.
 
 
PROBABLE CAUSE
  • Malfunction of the cruise control switch (integrated with CANCEL switch)
  • Malfunction of the ECM.
  • Malfunction of the ACC/FCM-ECU.
 
 
DIAGNOSIS
STEP 1. Using scan tool (M.U.T.-IIISE), check the DFI and MFI system data list.
(1)
cautionTo prevent damage to scan tool (M.U.T.-IIISE), always turn the ignition switch to the "LOCK" (OFF) position before connecting or disconnecting scan tool (M.U.T.-IIISE).
Connect scan tool (M.U.T.-IIISE). Refer to "How to connect the Scan Tool (M.U.T.-IIISE) ."
(2) Turn the ignition switch to the "ON" position.
(3) Using scan tool (M.U.T.-IIISE), check the DFI and MFI system data list (Refer to GROUP 13A - Diagnosis, Data List Reference Table ).
  • Item No.75: Cancel switch
(4) Turn the ignition switch to the "LOCK" (OFF) position.
Is the check result normal?
Go to Step 3.
Go to Step 2.
 
STEP 2. Check the cruise control switch (integrated with CANCEL switch).
Refer to .
Is the check result normal?
Replace the ECM (Refer to GROUP 13A - ECM ).
Replace the cruise control switch (integrated with CANCEL switch) (Refer to ).
 
STEP 3. Using scan tool (M.U.T.-IIISE), check the data list.
Check the following data list (Refer to ).
  • Item No.22: ACC switch state
Is the check result normal?
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 ACC/FCM-ECU (Refer to ).