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Home >> Lexus >> 2005 >> GS 300 >> Repair and Diagnosis (Single Page) >> Engine Performance >> System >> Engine (2JZ-GE) - Diagnostics >> Circuit Inspection >> DTC P0550, P0552, P0553: Power Steering Pressure Sensor/Switch Circuit, Power Steering Pressure Sensor/Switch Circuit Low/High Input >> Inspection Procedure

Inspection Procedure

  1. Check power steering oil pressure sensor. 

    PREPARATION: 

    1. Connect the hand-held tester or the OBD II scan tool to the DLC3.
    2. Start the engine.
    3. Push the hand-held tester or the OBD II scan tool main switch ON.
    4. Enter the following menu: DIAGNOSIS / ENHANCED OBD II / DATA LIST / ALL / PS SIGNAL.

    CHECK: 

    Read signal displayed on the hand-held tester or the OBD II scan tool.

    RESULT: 

    POWER STEERING OIL PRESSURE SENSOR

    Condition Power steering oil pressure sensor
    Turning the steering wheel until it is locked ON
    In an idle OFF
    1. OK: Check for intermittent problems (See  PRE-CHECK  ). 
    2. NG: Go to next step. 
  2. Check for open in harness and connector between engine ECU and power steering oil pressure sensor (See  HOW TO USE THE DIAGNOSTIC CHART AND INSPECTION PROCEDURE  ). 
    1. NG: Repair or replace harness or connector. 
    2. OK: Replace power steering oil pressure sensor (See  POWER STEERING VANE PUMP (2JZ-GE)  ). 
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