Steering Angle Sensor Inspection

WARNING: This page is about a different car, the 2005 Mazda RX-8. However, it is still accessible from the selected car via links, so may be relevant.

Remove the column cover.
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
1. B+
Fig 1: Identifying Steering Angle Sensor Connector Terminals
Courtesy of MAZDA MOTORS CORP.
Turn the ignition switch to the ON position, then measure the voltage between steering angle sensor terminal A and ground.
- 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
1. 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
1. 0 V
Turn the ignition switch off.
Connect the WDS or equivalent to the DLC-2.
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
1. When the steering wheel is turned to the right:
  1. SWA POS changes positively.
2. When the steering wheel is turned to the left:
  1. SWA POS changes negatively.
Fig 2: Identifying Data Link Connector-2
Courtesy of MAZDA MOTORS CORP.