Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSMAZDA20113 MAZDASPEED, 2.3 3REPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 638 (DYNAMIC STABILITY CONTROL SYSTEM)STEERING ANGLE SENSOR INSPECTION
2011 Mazda 3 Mazdaspeed, 2.3 3
Steering Angle Sensor Inspection
2011 Mazda 3 Mazdaspeed, 2.3 3SECTION Steering Angle Sensor Inspection
WARNING: This page is about a different car, the 2011 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
B+
- 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
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 off.
- Connect the M-MDS 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
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.
RENDER: 1.0x
NO RELATED
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.