Steering Angle Sensor Inspection

Remove the column cover. (See COLUMN COVER REMOVAL/INSTALLATION )
Measure the voltage between steering angle sensor terminal B and ground.
- If there is any malfunction, inspect the wiring harness between steering angle sensor terminal B and battery, then repair or replace if necessary.
  Standard voltage B+
Turn the ignition switch to the ON position, then measure the voltage between steering angle sensor terminal A and ground.

Fig 1: Steering Angle Sensor Connector Terminals
Courtesy of MAZDA MOTORS CORP.
- If there is any malfunction, inspect the wiring harness between steering angle sensor terminal A and ignition switch, then repair or replace if necessary.
  Standard voltage B+
Measure the voltage between steering angle sensor terminal H and the ground.
- If there is any malfunction, inspect the wiring harness between steering angle sensor terminal H and ground point, then repair or replace if necessary.
  Standard voltage 0V
Turn the ignition switch to the LOCK position.
Connect the M-MDS to the DLC-2.

Fig 2: DLC-2
Courtesy of MAZDA MOTORS CORP.
Select the "SWA_POS" PID.
Verify the SWA_POS changes when the steering wheel is turned to the left and right.
- If there is any malfunction, replace the steering angle sensor.
  Standard
  
  When the steering wheel is turned to the right: SWA_POS changes positively.
  
  When the steering wheel is turned to the left: SWA_POS changes negatively.