1. Remove the lower arm (front) 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
1.18-2.23 N·m
{12.1-22.7 kgf·cm, 10.5-19.7 in·lbf}
Front lower arm (front) removal/installation
Front lower arm (rear) removal/installationMazda 6 Service Manual: Dtc c1955, c1956
Caution
When attaching the tester lead to the DSC HU/CM connector the SST
(49 G066 004) must be used.
Diagnostic procedure
...
Mazda 6 Service Manual: Radiator cap
Warning
Never remove the radiator cap while the engine is running, or when
the engine and radiator are hot. Scalding coolant and steam may shoot out
and cause serious injury. It may also damage the engine and cooling system.
Turn off the engine and wait until it is cool. Even then, be ve ...