Inspection Procedure 1: The Interior Lamps (front room lamp, rear room lamp and ignition key cylinder illumination lamp) does not Illuminate or Extinguish 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 lock actuator
  • Driver’s door switch
  • Passenger’s door switch
  • Rear door switch

PROBABLE CAUSES



  • Malfunction of the door lock actuator (RH)
  • Malfunction of the door switches
  • Malfunction of the ETACS-ECU
  • Damaged harness wires and connectors

DIAGNOSIS PROCEDURE


STEP 1. M.U.T.-III diagnosis code



Q. Is the diagnosis code set?





STEP 2. M.U.T.-III data list




  • Turn the ignition switch to the "OFF" position. (key inserted)
  • Open the all of doors.
  • When the driver’s door is unlocked
Item No.
 Item name
 Normal condition
19
 Driver’s Door switch
 ON
20
 Driver’s door unlock switch
 ON
21
 Driver’s door lock switch
 OFF
30
 Ignition switch (IG1)
 OFF
48
 Passenger’s Door switch
 ON
49
 Rear door switch
 ON
OK: Normal conditions are displayed for all the items.

Q. Is the check result normal?









STEP 3. Check the door lock actuator (RH).



Q. Is the check result normal?





STEP 4. Retest the system.



Q. Is the check result normal?