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Home >> Infiniti >> 2008 >> QX56 AWD >> Repair and Diagnosis >> Engine Performance >> Engine Control Systems >> Engine Control System - DTCS P0327 To P1145 >> DTC P0550: PSP Sensor >> Component Inspection >> Power Steering Pressure Sensor

Power Steering Pressure Sensor

  1. Reconnect all harness connectors disconnected.
  2. Start engine and let it idle.
  3. Check voltage between ECM terminal 12 and ground under the following conditions.
    VOLTAGE REFERENCE CHART

    Condition Voltage
    Steering wheel: Being turned. 0.5 - 4.5V
    Steering wheel: Not being turned. 0.4 - 0.8V
    Fig 1: Checking Voltage Between ECM Terminal 12 And Ground
    G05739583Courtesy of NISSAN MOTOR CO., U.S.A.