INSPECTION PROCEDURE B-5: The Power Window Timer Function does not work Normally. <Using SWS Monitor>


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

OPERATION




  • Ignition switch (IG1)
  • Driver’s door switch

COMMENTS ON TROUBLE SYMPTOM



POSSIBLE CAUSES



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

DIAGNOSTIC PROCEDURE


STEP 1. ECU check by using the SWS monitor




  • Turn the ignition switch from the ON to the OFF position.
ECUS TO BE CHECKED
  • ETACS ECU
  • P/W MODULE
OK: "OK" are displayed for all the items
note "OK" is displayed for the power window switch (power window module) for approximately one minute, and then changed to "NG". However, only "OK" is displayed for the ETACS-ECU.

Q. Are the check result normal?







STEP 2. Function diagnosis by using the SWS monitor



Selected item POWER WINDOW
  • Turn the ignition switch from the ON to the OFF position.
Item No.
 Item name
 Normal conditions
Item 30
 IG SW IG1
 OFF
Item 33
 P/W SW ACCEPT
 PERMIT
Item 71
 P/W ECU ACK
 NORMAL ACK
note For item No.33 "P/W SW ACCEPT", "PERMIT" is displayed for approximately 30 seconds after the ignition switch is turned off, and then change to "PROHIBIT". In addition, on item No.71 "P/W MODULE", "NORMAL ACK" is changed to "INPUT CHECK" momentarily, when the power window main switch is operated for approximately 30 seconds after the ignition switch is turned off.
OK: Normal conditions are displayed for all the items.

Q. Are the check result normal?









STEP 3. SWS monitor data list



Selected item ETACS ECU
  • Driver’s door: open
Item No.
 Item name
 Normal condition
Item 32
 DR DOOR SW
 ON
OK: Normal condition is displayed.

Q. Is the check result normal?





STEP 4. Retest the system.



Q. Is the check result normal?