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.
Circuit Description
The electronic brake control module (EBCM) receives multiple direct inputs from the steering wheel position sensor. These circuits include 2 digital square wave input signals A and B. Phase A or B should toggle high and low every 2 degrees of steering wheel rotation. The EBCM also receives one analog steering wheel position input on the steering wheel position sensor signal 1 circuit and is compared to the digital circuits for fault detection. The analog portion of the steering wheel position sensor is supplied a 5-volt reference and low side return circuits from the EBCM. Ignition voltage and ground circuits are supplied directly to the digital portion of the steering wheel position sensor.
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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.