INSPECTION PROCEDURE B-4: Sunroof Timer 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



POSSIBLE CAUSES



  • Malfunction of the driver’s door switch
  • Malfunction of ETACS-ECU
  • Malfunction of the sunroof motor assembly (sunroof-ECU)
  • Damaged harness wires and connectors

DIAGNOSTIC PROCEDURE


STEP 1. Check the operation condition of the sunroof.



Q. Is the check result normal?





STEP 2. ECU check on the SWS monitor.




  • Ignition switch: OFF
  • Operate the sunroof switch.
note Operate the sunroof switch within the timer period after the ignition switch is turned off.
ECUS TO BE CHECKED
  • ETACS ECU
  • SUNROOF ECU
OK: "OK" are displayed for all the items

Q. Are the check result normal?







STEP 3. Function diagnosis by using the SWS monitor.



<Selected item> SUNROOF OPE.
  • Ignition switch: ON
Item No.
 Item name
 Normal condition
Item 72
 S/R ECU ACK
 INPUT CHECK (only momentarily when switch is operated)
OK: Normal condition is displayed.

Q. Is the check result normal?





STEP 4. SWS monitor data list



<Selected item> ETACS ECU
  • Ignition switch: OFF
  • Driver’s door: Close → Open
Item No.
 Item name
 Normal condition
Item 30
 IG SW(IG1)
 OFF
Item 32
 DR DOOR SW
 from OFF to ON
OK: Normal conditions are displayed for all the items

Q. Are the check result normal?







STEP 5. Retest the system.


(1)Replace the sunroof motor assembly.
(2)Check that the sunroof timer function works normally.

Q. Is the check result normal?