INSPECTION PROCEDURE B-5: Power window timer function does not work normally.


caution Before replacing the ECU, ensure that the power supply circuit, the earth circuit and the communication circuit are normal.

COMMENTS ON TROUBLE SYMPTOM
If the power window timer does not work normally, a malfunction of the power window main switch or ETACS-ECU is suspected.

PROBABLE CAUSES

  • Malfunction of the door switch (Driver’s side)
  • Malfunction of the door switch (Front passenger’s side)
  • Malfunction of the power window main switch
  • Malfunction of ETACS-ECU
  • Damaged wiring harness and connectors

DIAGNOSTIC PROCEDURE


STEP 1. Check the power supply system.




  • Hazard warning lamp

Q. Is the check result normal?





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




  • Turn the ignition switch to the ON position.
  • Close the driver’s door.
  • Close the front passenger’s door.
Item No.
 Item name
 Normal condition
254
 IG voltage
 System voltage
256
 Dr door ajar switch
 Close
257
 As door ajar switch
 Close
OK: Normal conditions are displayed for all the items.

Q. Are the check result normal?









STEP 3. Retest the system.



Q. Is the check result normal?