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Home >> Infiniti >> 2012 >> QX56 AWD >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System - DTCS P0500 To P1424 >> DTC P0550: PSP Sensor >> Component Inspection (Power Steering Pressure Sensor)
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Component Inspection (Power Steering Pressure Sensor)

  1. CHECK POWER STEERING PRESSURE SENSOR
    1. Turn ignition switch OFF.
    2. Reconnect all harness connectors disconnected.
    3. Start engine and let it idle.
    4. Check the voltage between ECM harness connector terminals under the following conditions.
    ECM Condition Voltage (V)
    Connector + -
    Terminal terminal
    F111 39 45 Steering wheel Being turned 0.5 - 4.5
    Not being turned 0.4 - 0.8

    Is the inspection result normal? 

    YES: INSPECTION END

    NO: Replace power steering pressure sensor.

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