Mazda 3 Service Manual: Sunroof Motor Inspection

1. Disconnect the negative battery cable..

2. Remove the rain sensor cover. (Vehicles with auto light/wiper system).

3. Disconnect the rain sensor connector. (Vehicles with auto light/wiper system)

4. Partially peel back the seaming welts.

5. Remove the following parts:

a. Sunroof seaming welt

b. A-pillar trim.

c. Front scuff plate.

d. Rear scuff plate.

e. B-pillar lower trim.

f. Upper anchor of the front seat belt.

g. B-pillar upper trim.

h. Rear seat cushion.

i. Tire house trim.

j. Trunk side upper trim (5HB).

k. C-pillar trim.

l. Map light.

m. Sunvisor.

n. Assist handle.

o. Headliner.

6. Measure the voltage at each terminal.

• If not as specified, inspect the parts listed under “Inspection item” and the related wiring harnesses.

• If the parts and wiring harnesses are normal but the system still does not work properly, replace the sunroof motor.

Terminal Voltage Table (Reference)