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:

    Stopping the vehicle
    1. Safely move the vehicle off the road and away from traffic. 2. Turn on the hazard warning flashers. 3. Park on a level surface and apply the parking brake. Move the shift lever to P (Park). 4. Turn off the engine. 5. Raise the hood to warn other traffic and to signal professional roa ...

    Precaution
    Precaution for Supplemental Restraint System (SRS) "AIR BAG" and "SEAT BELT PRE-TENSIONER" The Supplemental Restraint System such as "AIR BAG" and "SEAT BELT PRE-TENSIONER", used along with a front seat belt, helps to reduce the risk or severity of injury to the driver and front passenger for ...

    Configuration (BCM)
    CONFIGURATION (BCM) : Description Vehicle specification needs to be written with CONSULT because it is not written after replacing BCM. Configuration has three functions as follows Function Description  "Before Replace ECU " Reads the vehi ...

    Nissan Maxima Owners Manual

    Nissan Maxima Service and Repair Manual

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