1. Remove the stabilizer control link from the vehicle.
2. Inspect for bending and damage.
3. Measure the ball joint starting torque.
(1) Rock the ball joint stud side to side 10 times.
(2) Rotate the ball joint stud 10 times.
(3) Measure the starting torque using a suitable Allen socket and a torque wrench.

Starting torque
0.23-0.47 N·m
{2.4-4.7 kgf·cm, 2.1-4.1 in·lbf}
Rear stabilizer removal/installation
Trailing link removal/installationMazda 6 Service Manual: Instrument cluster repair
Note
The needle of speedometer or tachometer may continue to rotate
clockwise until it indicates over maximum graduation. If a customer
complains of this concern, repair the needle position according to the
following steps.
1. Verify the concern.
2. Turn the ignition switch to LOC ...
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
...