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.

2009 Infiniti EX35 Base, AWDFACTORY OEM SERVICE PROCEDURE

System Description: Notes

The EPS system controls the power steering solenoid valve through the power steering control unit.
The valve driving voltage to control the power steering solenoid valve varies according to the vehicle speed.

Fig 1: Power Steering Solenoid Valve Voltage Graph
Courtesy of NISSAN MOTOR CO., U.S.A.

Factory Service Tools

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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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