Inspection procedure B-3: Door Ajar Warning Buzzer Function does not Work Normally.


caution Whenever the ECU is replaced, ensure that the input and output signal circuits are normal.


COMMENTS ON TROUBLE SYMPTOM




  • Ignition switch (IG1)
  • Driver’s door switch
  • Passenger’s door switch
  • Rear door switch
  • Vehicle speed signal

PROBABLE CAUSES



  • Malfunction of the driver’s door switch
  • Malfunction of the passenger’s door switch
  • Malfunction of the rear door switch
  • Malfunction of the ETACS-ECU
  • Damaged harness wires and connectors

DIAGNOSIS PROCEDURE


STEP 1. Check of adjustment details for the door ajar warning buzzer function



Q. Is the check result normal?





STEP 2. M.U.T.-III CAN bus diagnostics



Q. Is the check result normal?





STEP 3. Check the diagnosis code of the engine-ECU.



Q. Is the diagnosis code set?





STEP 4. M.U.T.-III data list




  • Turn the ignition switch to the "LOCK" (OFF) position.
  • Open any door.
Item No.
 Item name
 Normal condition
19
 Drive’s door switch
 Any of them becomes ON.
48
 Passenger’s door switch
49
 Rear door switch
30
 Ignition switch(IG1)
 OFF
OK: Normal conditions are displayed for all the items.

Q. Is the check result normal?









STEP 5. Retest the system.



Q. Is the check result normal?