Nissan Maxima Service and Repair Manual: ECU diagnosis information

POWER STEERING CONTROL UNIT

Reference Value

TERMINA LAYOUT

Nissan Maxima. TERMINA LAYOUT

PHYSICAL VALUES

Nissan Maxima. PHYSICAL VALUES

CAUTION: When using circuit tester or oscilloscope to measure voltage for inspection, be sure not to extend forcibly any connector terminals.

Fail Saf

EPS system

  • EPS system enters the fail-safe mode (that allows the steering
    force to be controlled without impairing the drive ability) if any of
    the input/output signals to/from EPS system (power steering control
    unit) deviate from the standard.
    NOTE:
    The system enters the fail-safe mode if the engine speed remains
    at 1,500 RPM or more for over 10 seconds while the vehicle is
    stopped. This is normal.
  • The fail-safe function is cancelled when a vehicle speed signal of 2
    km/h (1.2 MPH) or more is inputted or the key switch is turned
    OFF→ ON. EPS system restores the normal operation at that time

Nissan Maxima. EPS system

Nissan Maxima. EPS system

    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 ...

    Wiring diagram
    ELECTRONICALLY CONTROLLED POWER STEERING SYSTEM Wiring Diagram ...

    Other materials:

    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 ...

    Windshield-washer fluid
    Windshield-washer fluid reservoir Fill the windshield-washer fluid reservoir periodically. Add windshield-washer fluid when the low windshield-washer fluid warning light comes on. To fill the windshield-washer fluid reservoir, lift the cap off the reservoir and pour the windshieldwasher ...

    Check cooling fan relay
    Description The electrical load signal (Headlamp switch signal, rear window defogger switch signal, etc.) is transferred via the CAN communication line from BCM to ECM via the IPDM E/R. Component Function Check 1.CHECK REAR WINDOW DEFOGGER SWITCH FUNCTION Turn ignition switch ON. Connec ...

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    Nissan Maxima Service and Repair Manual

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