Without ABS
1. Remove the vehicle speedometer sensor.
2. Measure voltage (AC range) between terminals of the vehicle speedometer sensor while the gear is turning.


3. Install the vehicle speedometer sensor.
Vehicle speedometer sensor removal/installation
Manual transaxle removal/installationMazda 6 Service Manual: Steering shaft inspection
1. Inspect the following.
(1) Column bearing for damage
(2) Steering shaft length
Replace the steering shaft component as necessary.
Length
211.6 mm {8.3 in}
2. Inspect the tilt and telescope operation
(1) Verify that the adjusting lever moves smoothly from unlock posit ...
Mazda 6 Service Manual: Front/rear abs wheel-speed sensor inspection
Visual Inspection
Remove the wheel and tire, and inspect the sensor for looseness and damage.
Replace the sensor if necessary.
Clearance Inspection
Inspect the clearance between the wheel-speed sensor and the sensor rotor.
Clearance
0.3-1.1 mm {0.012-0.043 in}
Resistance Inspection
...