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Home >> Lexus >> 2015 >> LS 600h >> Repair and Diagnosis (Single Page) >> Steering >> Power Steering >> Variable Gear Ratio Steering System - Diagnostic Codes & Symptom Tests >> Variable Gear Ratio Steering System >> DTC C15C3/75: Brake System Control Module Malfunction [10/2014 - ] >> Procedure

DTC C15C3/75: Brake System Control Module Malfunction [10/2014 - ]: Procedure

  1. CHECK DTC (ELECTRONICALLY CONTROLLED BRAKE SYSTEM) 
    1. Check for DTCs in the electronically controlled brake system. Refer to DTC CHECK / CLEAR [10/2014 - ] .
      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 [10/2014 - ] .
      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 [10/2014 - ] 
  4. GO TO ELECTRONICALLY CONTROLLED BRAKE SYSTEM (DIAGNOSTIC TROUBLE CODE CHART). Refer to  DIAGNOSTIC TROUBLE CODE CHART [10/2014 - ] 
  5. GO TO CAN COMMUNICATION SYSTEM (DIAGNOSTIC TROUBLE CODE CHART). Refer to  DIAGNOSTIC TROUBLE CODE CHART [10/2014 - ]