1. Disconnect the negative battery cable..
2. Remove the front map light..
3. Verify that the continuity between the sunroof switch terminals is as indicated in the table.

If not as indicated in the table, replace the sunroof switch.

Sunroof Switch Removal/InstallationBrake Fluid Pressure Sensor
Purpose/Function
The brake fluid pressure sensor detects the fluid pressure from the master
cylinder and transmits it to the DSC HU/CM.
Construction
The brake fluid pressure sensor is built into the DSC HU/CM. Therefore if
there is any malfunction of the brake fluid pressur ...
Assist Handle Removal/Installation
Removal
1. Insert a tape-wrapped flathead screwdriver into the service hole and remove
the assist handle covers.
2. Remove the assist handle in the direction of the arrow (1) and (2), while
detach clips.
NOTE:
Remove the assist handle by shaking it up and down.
Install ...
Sunroof Switch Inspection
1. Disconnect the negative battery cable..
2. Remove the front map light..
3. Verify that the continuity between the sunroof switch terminals is as indicated
in the table.
If not as indicated in the table, replace the sunroof switch.
...