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Home >> Infiniti >> 2004 >> QX56 RWD >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System >> DTC P0550: PSP Sensor >> Component Inspection >> Power Steering Pressure Sensor
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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.
    CHECKING VOLTAGE CONDITION

    Condition Voltage
    Steering wheel is being turned. 0.5 - 4.5V
    Steering wheel is not being turned. 0.4 - 0.8V
    Fig 1: Checking Voltage Between ECM Terminal 12 & Ground
    G02691537Courtesy of NISSAN MOTOR CO., U.S.A.
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