Nissan Maxima Service and Repair Manual: System description

EPS SYSTEM

System Diagram

CONTROL DIAGRAM

Nissan Maxima. CONTROL DIAGRAM

System Description

Nissan Maxima. System Description

  • 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.

OPERATION PRINCIPLE

During Parking (When Turning The Steering Wheel To The Right)

Nissan Maxima. OPERATION PRINCIPLE

  1. Power steering solenoid valve is closed while a vehicle is stopped.
  2. Pinion "1R", "2R" and "3R" are closed depending on steering torque of steering wheel.
  3. Oil pressure "P" in the gear housing assembly is the sum of oil pressures occurring in "2R" and "3R". This
    results in a light steering force because of high pressure.

During High-speed Operation

Nissan Maxima. During High-speed Operation

  1. Power steering solenoid valve is opened during high-speed operation.
  2. Pinion "1R", "2R" and "3R" are closed depending on steering torque of steering wheel.
  3. Oil pressure "2R" does not occur because the power steering solenoid valve is on full throttle.
  4. Oil pressure "P" in the gear housing assembly includes only oil pressure occurring in "3R" and results in a
    heavy steering force.

Component Parts Location

Nissan Maxima. Component Parts Location

  1. Power steering control unit M59
    (view with glove box removed)
  2. Power steering solenoid valve E14

Component Description

Nissan Maxima. Component Description

    Basic inspection
    DIAGNOSIS AND REPAIR WORKFLOW Work Flow DETAILED FLOW 1.COLLECT THE INFORMATION FROM THE CUSTOMER It is also important to clarify customer complaints before inspection. First of all, reproduce s ...

    DTC/circuit diagnosis
    ...

    Other materials:

    Push-button ignition switch illumination circuit
    Description Provides the power supply and the ground to control the push-button ignition switch illumination. Component Function Check 1.CHECK PUSH-BUTTON IGNITION SWITCH ILLUMINATION OPERATION CONSULT Turn the ignition switch ON. Select "ENGINE SW ILLUMI" of BCM (INTELLGENT KEY) active ...

    Service data and specifications (SDS)
    General Specification (Rear) Wheel Alignment (Unladen*1) *1: Fuel, engine coolant, and lubricants are full. Spare tire, jack, hand tools, and mats are in designated positions. *2: 18" tire. *3: 19" tire. Ball Joint Wheelarch Height (Unladen*1) *1: Fuel, engine coolant, and lub ...

    Rear power sunshade (if so equipped)
    The rear sun shade operates when the ignition switch is in the ACC or ON position. The rear sun shade switch is located on the front console. To raise the sun shade, push the upper side of the switch 1 . To lower the sun shade, push the lower side of the switch 2 . The switch ne ...

    Nissan Maxima Owners Manual

    Nissan Maxima Service and Repair Manual

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