1. Remove the upper arm from the vehicle.
2. Inspect for damage, cracks, and bending.

3. Inspect the ball joint rotation torque.
(1) Rotate the ball joint five times.
(2) Measure the rotation torque using a suitable allen socket and a torque wrench.
- If not within the specification, replace the lower arm component.
Rotation torque
1.5 N·m {15.0 kgf·cm, 13.2 in·lbf} max.
Front upper arm removal/installation
Front lower arm (front) removal/installationMazda 6 Service Manual: Starting the Engine
WARNING
Radio waves from the key may affect medical devices such as pacemakers:
Before using the key near people who use medical devices, ask the medical device
manufacturer or your physician if radio waves from the key will affect the device.
NOTE
The key must be carried because the key c ...
Mazda 6 Service Manual: Curtain Air Bags
The curtain air bags are mounted in the front and rear window pillars, and the
roof edge along both sides.
When the air bag crash sensors detect a side impact of greater than moderate
force, the curtain air bag inflates quickly and helps to reduce injury mainly to
the rear outboard passenger' ...