Steering Angle Sensor Inspection

WARNING: This page is about a different car, the 2017 Mazda CX-9. However, it is still accessible from the selected car via links, so may be relevant.

NOTE:

If the steering angle sensor is removed from the clock spring, the steering angle sensor absolute angle could change, therefore, do not remove the steering angle sensor from the clock spring.
If the steering angle sensor is replaced, replace it together with the clock spring.

Remove the column cover. (See COLUMN COVER REMOVAL/INSTALLATION .)
Connect a tester positive side to steering angle sensor terminal A, and connect terminal B (ground) to negative side.

Fig 1: Steering Angle Sensor Connector Terminals
Courtesy of MAZDA MOTORS CORP.
Switch the ignition ON (engine off or on).
Turn the steering wheel to the left and right.
Verify that the voltage from steering angle sensor terminal A to B (ground) is as indicated in the table.

Fig 2: Steering Wheel Turning Angle Output Voltage Graph
Courtesy of MAZDA MOTORS CORP.
- If the voltage can be verified as indicated in the table, go to the next step.
- If the voltage is not as indicated in the table, replace the clock spring. (See CLOCK SPRING REMOVAL/INSTALLATION [TWO-STEP DEPLOYMENT CONTROL SYSTEM] .) (See CLOCK SPRING REMOVAL/INSTALLATION [STANDARD DEPLOYMENT CONTROL SYSTEM] .)
Switch the ignition to off.
Connect a tester positive side to steering angle sensor terminal C, and connect terminal B (ground) to negative side.
Switch the ignition ON (engine off or on).
Turn the steering wheel to the left and right.
Verify that the voltage from steering angle sensor terminal C to B (ground) is as indicated in the table.

Fig 3: Steering Wheel Turning Angle Output Voltage Graph
Courtesy of MAZDA MOTORS CORP.
- If the voltage is not as indicated in the table, replace the clock spring. (See CLOCK SPRING REMOVAL/INSTALLATION [TWO-STEP DEPLOYMENT CONTROL SYSTEM] .) (See CLOCK SPRING REMOVAL/INSTALLATION [STANDARD DEPLOYMENT CONTROL SYSTEM] .)