1. Verify that the joint shaft is not twisted or cracked.
2. Turn the joint shaft by hand and verify that the bearing rotates smoothly and freely.

Drive shaft
Joint shaft removal/installationMazda 6 Service Manual: STEP 2: Contact Mazda North American Operations
If for any reason you feel the need for further assistance after contacting your
dealership management or it becomes necessary to have the components or wiring system
for the supplementary restraint system modified to accommodate a person with certain
medical conditions in accordance with a ce ...
Mazda 6 Service Manual: Seat warmer switch inspection
1. Remove the seat warmer switch.
2. Inspect for continuity between the seat warmer switch terminals using an
ohmmeter.
If not as specified, replace the seat warmer switch.
Drivers side
Passengers side
...