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Home >> Lexus >> 2012 >> LS 600hL >> Repair and Diagnosis (Single Page) >> Steering >> Steering Gear >> Variable Gear Ratio Steering System (Diagnostic Codes & Symptom Tests) >> Variable Gear Ratio Steering System >> DTC C15C3/75: Brake System Control Module Malfunction >> Procedure

DTC C15C3/75: Brake System Control Module Malfunction: Procedure

  1. CHECK DTC (ELECTRONICALLY CONTROLLED BRAKE SYSTEM) 
    1. Check for DTCs in the electronically controlled brake system. Refer to DTC CHECK / CLEAR .
      RESULT

      Result Proceed to
      DTC is not output OK
      DTC is output NG

    NG → See step   4 

    OK: Go to next step 

  2. CHECK DTC (CAN COMMUNICATION SYSTEM) 
    1. Check for DTCs in the CAN communication system. Refer to DIAGNOSIS SYSTEM .
      RESULT

      Result Proceed to
      DTC is not output A
      DTC is output B

    B → See step   5 

    A → See step   3 

  3. REPLACE STEERING CONTROL ECU. Refer to  REMOVAL 
  4. GO TO ELECTRONICALLY CONTROLLED BRAKE SYSTEM (DIAGNOSTIC TROUBLE CODE CHART). Refer to  DIAGNOSTIC TROUBLE CODE CHART 
  5. GO TO CAN COMMUNICATION SYSTEM (DIAGNOSTIC TROUBLE CODE CHART). Refer to  DIAGNOSTIC TROUBLE CODE CHART