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:

    B26e1 no reception of engine status signal
    Description BCM receives the engine status signal from ECM via CAN communication. DTC Logic DTC DETECTION LOGIC NOTE: If DTC B26E1 is displayed with DTC U1000, first perform the trouble diagnosis for DTC U1000. Refer to SEC-29, "DTC Logic". If DTC B26E1 is displayed with D ...

    BCM (body control module)
    Reference Value NOTE: The Signal Tech II Tool (J-50190) can be used to perform the following functions. Refer to the Signal Tech II User Guide for additional information. Activate and display TPMS transmitter IDs Display tire pressure reported by the TPMS transmitter Read TPMS DTCs Re ...

    Diagnosis system (BCM)
    CONSULT Function (BCM - COMMON ITEM) APPLICATION ITEM CONSULT performs the following functions via CAN communication with BCM. SYSTEM APPLICATION BCM can perform the following functions. CONSULT Function (BCM - AIR PRESSURE MONITOR) NOTE: The Signal Tech II Tool (J-50190) can be used to ...

    Nissan Maxima Owners Manual

    Nissan Maxima Service and Repair Manual

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