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Home >> Lexus >> 2015 >> GS 450h Base >> Repair and Diagnosis (Single Page) >> Steering >> Manual Steering >> Dynamic Rear Steering System (Diagnostic Codes & Symptom Tests) >> Dynamic Rear Steering System >> DTC C1B21/31: ECU Malfunction (CPU); DTC C1B22/32: ECU Malfunction (Internal Line); DTC C1B23/33: ECU Malfunction (Substrate Temperature Sensor); DTC C1B25/35: ECU Malfunction (Flash Memory) [09/2014 - ] >> Procedure
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DTC C1B21/31: ECU Malfunction (CPU); DTC C1B22/32: ECU Malfunction (Internal Line); DTC C1B23/33: ECU Malfunction (Substrate Temperature Sensor); DTC C1B25/35: ECU Malfunction (Flash Memory) [09/2014 - ]: Procedure

  1. REPLACE REAR STEERING CONTROL ECU 
    1. Replace the DRS ECU (rear steering control ECU) (Refer to REMOVAL [09/2014 - ] ).

    Result:  NEXT

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