Nissan Maxima Service and Repair Manual: Engine speed signal circuit

Nissan Maxima Service and Repair Manual / Steering / Steering control system / DTC/circuit diagnosis / Engine speed signal circuit

Description

ECM sends engine speed signal to power steering control unit.

Diagnosis Procedure

1.PERFORM ECM SELF-DIAGNOSIS

With CONSULT

Perform ECM self-diagnosis.

2.CHECK HARNESS BETWEEN ECM AND POWER STEERING CONTROL UNIT FOR OPEN

Nissan Maxima. CHECK HARNESS BETWEEN ECM AND POWER STEERING CONTROL UNIT FOR OPEN

  1. Turn the ignition switch OFF.
  2. Disconnect ECM connector E10.
  3. Disconnect power steering control unit connector.
  4. Check continuity between ECM connector E10 (A) terminal 94
    and power steering control unit connector M59 (B) terminal 10.

Nissan Maxima. CHECK HARNESS BETWEEN ECM AND POWER STEERING CONTROL UNIT FOR OPEN

3.CHECK HARNESS BETWEEN ECM AND POWER STEERING CONTROL UNIT FOR SHORT

Nissan Maxima. CHECK HARNESS BETWEEN ECM AND POWER STEERING CONTROL UNIT FOR SHORT

Nissan Maxima. CHECK HARNESS BETWEEN ECM AND POWER STEERING CONTROL UNIT FOR SHORT

  1. Check continuity between ECM connector E10 terminal 94 and
    ground.
  2. Turn ignition switch ON.
  3. Check voltage between ECM connector E10 terminal 94 and
    ground.

Nissan Maxima. CHECK HARNESS BETWEEN ECM AND POWER STEERING CONTROL UNIT FOR SHORT

Nissan Maxima. CHECK HARNESS BETWEEN ECM AND POWER STEERING CONTROL UNIT FOR SHORT

4.CHECK ENGINE SPEED SIGNAL (ECM SIDE)

Nissan Maxima. CHECK ENGINE SPEED SIGNAL (ECM SIDE)

  1. Turn the ignition switch OFF.
  2. Connect ECM connector E10.
  3. Start the engine.
  4. Check signal between ECM connector E10 terminal 94 and
    ground with oscilloscope.

Nissan Maxima. CHECK ENGINE SPEED SIGNAL (ECM SIDE)

5.CHECK ENGINE SPEED SIGNAL (POWER STEERING CONTROL UNIT SIDE)

Nissan Maxima. CHECK ENGINE SPEED SIGNAL (POWER STEERING CONTROL UNIT SIDE)

  1. Turn the ignition switch OFF.
  2. Connect power steering control unit harness connector.
  3. Start the engine.
  4. Check signal between power steering control unit harness connector
    M59 terminal 10 and ground with oscilloscope

Nissan Maxima. CHECK ENGINE SPEED SIGNAL (POWER STEERING CONTROL UNIT SIDE)

6.CHECK TERMINALS AND HARNESS CONNECTORS

  1. Check power steering control unit pin terminals for damage or loose connection with harness connector.
  2. Check ECM pin terminals for damage or loose connection with harness connector.
    Power steering solenoid valve
    Description Power steering solenoid valve controls the power steering oil pressure in the gear housing assembly. Diagnosis Procedure 1.CHECK POWER STEERING SOLENOID VALVE SIGNAL Start eng ...

    Vehicle speed signal circuit
    Description Combination meter sends vehicle speed signal to power steering control unit. Diagnosis Procedure 1.PERFORM COMBINATION METER SELF-DIAGNOSIS Perform combination meter self-diagnosis. 2 ...

    Other materials:

    Body component parts
    Underbody Component Parts Rear seat lower crossmember Rear floor front Rear floor front extension Rear seat crossmember Front side member rear extension (LH/RH) Dash side (LH/RH) Hoodledge reinforcement (LH/RH) Hoodledge lower assembly (LH/RH) Front suspension spring s ...

    CAN communication system
    System Description CAN (Controller Area Network) is a serial communication line for real time application. It is an on-vehicle multiplex communication line with high data communication speed and excellent error detection ability. Many electronic control units are equipped onto each vehicle, a ...

    P1740 select solenoid
    Description  The lock-up select solenoid valve controls lock-up clutch pressure or forward clutch pressure (reverse brake pressure).  When controlling lock-up clutch, the valve is turned OFF. When controlling forward clutch, it is turned ON. DTC Logic DTC DET ...

    Nissan Maxima Owners Manual

    Nissan Maxima Service and Repair Manual

    © 2017-2024 Copyright www.nimainfo.com
    0.0061