1. Remove the clock spring.
2. Inspect for continuity between the clock spring terminals using an ohmmeter.


Note
Clock spring adjustment
Passenger-side air bag cut-off indicator light removal/installationMazda 6 Service Manual: Front seat disassembly/assembly
Warning
Handling the front seat (side air bag) improperly can accidentally
deploy the side air bag, which may seriously injure you. Read AIR BAG SYSTEM
SERVICE WARNINGS before handling the front seat. (See SERVICE WARNINGS.)
1. Disconnect the negative battery cable and wait for more tha ...
Mazda 6 Service Manual: Rear oil seal
REAR OIL SEAL REPLACEMENT
1. Remove the flywheel. (MTX) (See CLUTCH UNIT REMOVAL/INSTALLATION)
2. Remove the drive plate. (ATX) (See DRIVE PLATE REMOVAL/INSTALLATION)
3. Remove in the order indicated in the table.
4. Install in the reverse order of removal.
Rear Oil Seal Installation Note
...