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Home >> Lexus >> 2008 >> IS 250 RWD, Automatic >> Repair and Diagnosis >> External Pages >> Different car >> Section 31 (Power Assist Systems) >> Power Steering System >> DTC C1531: ECU Malfunction; DTC C1533: ECU Malfunction; DTC C1534: ECU Malfunction >> Inspection Procedure

Inspection Procedure

WARNING: This page is about a different car, the 2008 Lexus IS F. However, it is still accessible from the selected car via links, so may be relevant.
  1. RECONFIRM DTC 
    1. Check for DTCs (See DTC CHECK/CLEAR )

    OK: DTC except C1531, C1533, C1534 is not output. 

    NOTE: If replacing the power steering ECU assembly, initialize the rotation angle sensor value and calibrate the torque sensor zero point (See CALIBRATION ).

    NG: REPAIR CIRCUITS INDICATED BY OUTPUT DTCS  (See DIAGNOSTIC TROUBLE CODE CHART )

    OK: REPLACE POWER STEERING ECU ASSEMBLY  (See POWER STEERING ECU )

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