Sunroof Switch Circuit Check

Sunroof Switch Circuit Check

Description

The BCM supplies power to the integrated CPU of the sunroof motor assembly. The tilt and slide functions of the sunroof motor assembly is controlled by the sunroof switch.

Component Function

1. CHECK SUNROOF MOTOR FUNCTION

Do tilt up/down & slide open/close functions operate normally with sunroof switch?

Is the inspection result normal?
YES
Sunroof motor assembly is OK.
NO
Refer to "Diagnosis Procedure".

Diagnosis Procedure

Regarding Wiring Diagram information, refer to [Sunroof: Wiring Diagram] [1][2]Electrical Diagrams.

1. CHECK SUNROOF SWITCH INPUT SIGNAL

1 Turn ignition switch ON.
2 Check voltage between sunroof switch connector and ground.






Are the voltage measurements as specified?
YES
Sunroof switch is operating normally.
NO
GO TO 2

2. CHECK SUNROOF SWITCH CIRCUITS

1 Turn ignition switch OFF.





2 Disconnect sunroof motor assembly connector B83 and sunroof switch connector R4.
3 Check continuity between sunroof motor assembly connector B83 (A) and sunroof switch connector R4 (B).






4 Check continuity between sunroof motor assembly connector B83 (A) and ground.






Are the continuity test results as specified?
YES
GO TO 3
NO
Repair harness or connector.

3. CHECK SUNROOF SWITCH GROUND CIRCUIT

1 Connect sunroof motor assembly.
2 Check continuity between sunroof switch connector R4 and ground.






Is the continuity test result as specified?
YES
GO to 4
NO
Repair or replace harness.

4. CHECK SUNROOF SWITCH

1 Check continuity between sunroof switch terminals.











Are the continuity test results as specified?
YES
Sunroof switch is operating normally.
NO
Replace sunroof switch (map lamp assembly). Refer to [Headlining: Removal and Installation] Service and Repair.