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.
2023 Infiniti QX55 EssentialFACTORY OEM SERVICE PROCEDURE
Steering Angle Main Control Module
- Calculates the optimum control variable for steering angle main motor from input values of force motor angle sensor, main motor angle sensor, and vehicle speed signal for controlling the steering angle main motor.
- Steering angle main control module changes the steering gear ratio based on the drive mode select signal from chassis control module.
- Quickly switches the control after a malfunction occurs according to synchronous control using FlexRay communication.
- When transferring to EPS mode, this calculates the optimum control variable for steering angle sub motor from input values of steering torque sensor to control steering angle sub motor (Torque assist control).
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.