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.
Description And Operation: Operation
Operation
The EPS system is a power steering system designed to reduce the force necessary for maneuvering the vehicle at low speed, without rendering steering too light at higher speeds. EPS provides:
- A lighter and less complex system with fewer components.
- Less noise and improved driving comfort.
- Power assistance is relative to vehicle speed.
The EPS system operates according to the operating information received by the CAN, such as:
- Vehicle speed
- Engine speed
- Ignition status
The EPS assembly includes two built-in sensors that provide:
- Steering angle
- Steering wheel torque (driver input)
The system will turn off power assistance if the following criteria are met:
- Engine speed is less than 600 rpm
- Ignition is in the OFF position
This allows the system to continue providing assistance in the event of a stall, or a condition where ignition input is lost due to an electrical fault.
Safety goggles should be worn at all times when working on steering columns.
To service the steering wheel, switches or airbag, refer to Electrical - Restraints and follow all WARNINGS and CAUTIONS.
The airbag system is a sensitive, complex electro-mechanical unit. Before attempting to diagnose, remove or install the airbag system components you must first disconnect and isolate the battery negative (ground) cable. Then wait two minutes for the system capacitor to discharge. Failure to do so could result in accidental deployment of the airbag and possible personal injury. The fasteners, screws, and bolts, originally used for the airbag components, have special coatings and are specifically designed for the airbag system. They must never be replaced with any substitutes. Anytime a new fastener is needed, replace with the correct fasteners provided in the service package or fasteners listed in the parts books.
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
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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.
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