NOTE:
The sunroof switch is together with the front map light.
1. Disconnect the negative battery cable..
2. Remove the map light from the headliner..
3. Inspect for continuity between the sunroof switch terminals using an ohmmeter.

If not as specified, replace the sunroof switch.

Sunroof Unit Removal/Installation
Sunroof Switch Removal/InstallationDrive Belt Inspection [Mzr 2.0, Mzr 2.5]
MZR 2.0
A/C drive belt
NOTE:
Drive belt deflection/tension inspection is not necessary because of the
use of the maintenance-free type A/C drive belt.
Replace the drive belt if it is found to be damaged during visual inspection,
or if there is a malfunction or noise in th ...
Vanity Mirror Illumination Inspection
1. Disconnect the negative battery cable..
2. Remove the sunvisor..
3. Verify that the continuity between the vanity mirror illumination terminals
is as indicated in the table.
If not as indicated in the table, inspect the bulb. If there is no malfunction,
replace the sunvisor.
...
DSC Sensor Initialization Procedure
WARNING:
If the DSC sensor initialization procedure is not completed, the DSC will
not operate properly and it might cause an unexpected accident. Therefore, after
replacing or removing the DSC HU/CM or SAS control module, make sure to perform
the DSC sensor initialization procedure ...