INSPECTION PROCEDURE F-3: 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
If the sunroof timer function does not work, the input circuit from the ignition switch (IG1) or the driver’s door switch, the communication lines between the ETACS-ECU and the sunroof motor assembly (sunroof-ECU), the sunroof motor assembly (sunroof-ECU) or the ETACS-ECU may be defective.

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. Customize function by using the SWS monitor
Use the SWS monitor customize function to confirm that "KEY-OFF TMR T" is set to "W/O FUNCTION".

  • 30s
  • 3min.
  • 10min.

Q. Is the check result normal?
Go to Step 2.
Use the SWS monitor customize function to set the "KEY-OFF TMR T" to "W/O FUNCTION" (Refer to ).

Step 2. ECU check on the SWS monitor.
Check that the power supply and earth lines to the sunroof motor assembly (sunroof-ECU) and the ETACS-ECU and the SWS communication lines are normal.

  • Ignition switch: OFF
  • Operate the sunroof switch.
note Operate within the period set by using the customisation function 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?
"OK" are displayed for all the items : Go to Step 3.
"NG" is displayed on the "ETACS ECU" menu. : Refer to Inspection Procedure A-3 "Communication with the ETACS-ECU is not possible ."
"NG" is displayed on the "SUNROOF ECU" menu. : Refer to Inspection Procedure A-6 "Communication with the sunroof motor assembly (sunroof-ECU) is not possible ."

Step 3. Function diagnosis by using the SWS monitor.
Check the SWS communication signal, which are related to the sunroof.
<Selected item> SUNROOF OPE
  • Ignition switch: ON
Item No.
 Item name
 Normal conditions
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?
Go to Step 4.
Replace the sunroof motor assembly.

Step 4. SWS monitor data list.
Check the SWS communication signal, which are related to the sunroof timer function.
<Selected item> ETACS-ECU
  • Driver’s door switch: CLOSE to OPEN
Item No.
 Item name
 Normal conditions
Item 32
 DR DOOR SW
 From OFF to ON
OK: Normal condition is displayed.

Q. Is the check result normal?
Go to Step 5.
Refer to inspection procedure P-4 "The driver’s door switch signal is not received ."

Step 5. Retest the system.
Check that the sunroof timer function work normally.

Q. Is the check result normal?
The trouble can be an intermittent malfunction (Refer to GROUP 00 - How to Cope with Intermittent Malfunction ).
Replace the sunroof motor assembly.