INSPECTION PROCEDURE B-2: Any of The Sunroof Switch Positions is Defective.


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


COMMENTS ON TROUBLE SYMPTOM


If any of the sunroof switch positions is defective, the communication line between the sunroof switch and the sunroof motor assembly (sunroof-ECU) may be defective.

POSSIBLE CAUSES



DIAGNOSTIC PROCEDURE


STEP 1. SWS monitor data list.


Check the SWS communication signal, which are related to the sunroof.
<Selected item> SUNROOF OPE.
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?

Go to Step 2.

Refer to GROUP 54A, inspection procedure C-10 "When the sunroof switch is operated, the switch signal are not received ."

STEP 2. Retest the system.


The sunroof assembly should now work normally.

Q. Is the check result normal?

The trouble can be an intermittent malfunction (Refer to GROUP 00, How to use Troubleshooting/inspection Service Points - How to Cope with Intermittent Malfunction ).

Replace the sunroof motor assembly.