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DTC C1A41: Brake Request Value Mismatch between ENG / EHV and Driving Support ECU [08/2014 - ]: Procedure

  1. CHECK DTC OUTPUT (ELECTRONICALLY CONTROLLED BRAKE SYSTEM) 
    1. Check DTCs for the electronically controlled brake system. Refer to DTC CHECK / CLEAR [08/2014 - ] .

      OK

      Electronically controlled brake system DTC is not output.

    NG → See step   7 

    OK: Go to next step 

  2. CHECK DTC OUTPUT (HYBRID CONTROL SYSTEM) 
    1. Check DTCs for the hybrid control system. Refer to DTC CHECK / CLEAR [08/2014 - ] .

      OK

      Hybrid control system DTC is not output.

    NG → See step   8 

    OK: Go to next step 

  3. REPLACE BRAKE BOOSTER WITH MASTER CYLINDER 
    1. Replace the brake booster with master cylinder (skid control ECU). Refer to REMOVAL [08/2014 - ] .

    NEXT: Go to next step 

  4. CHECK DTC OUTPUT (PRE-COLLISION SYSTEM) 
    1. Using the Techstream, enter the following menus: Body Electrical / Pre-Collision 2 / Trouble Codes.
    2. Clear the DTCs. Refer to DTC CHECK / CLEAR [08/2014 - ] .
    3. Check for DTCs.

      OK

      DTC C1A41 is not output.

    NG → See step   5 

    OK → END 

  5. REPLACE POWER MANAGEMENT CONTROL ECU 
    1. Replace the power management control ECU. Refer to REMOVAL [08/2014 - ] .

    NEXT: Go to next step 

  6. CHECK DTC OUTPUT (PRE-COLLISION SYSTEM) 
    1. Using the Techstream, enter the following menus: Body Electrical / Pre-Collision 2 / Trouble Codes.
    2. Clear the DTCs. Refer to DTC CHECK / CLEAR [08/2014 - ] .
    3. Recheck for DTCs.

      OK

      DTC C1A41 is not output.

    NG → See step   9 

    OK → END 

  7. GO TO ELECTRONICALLY CONTROLLED BRAKE SYSTEM. Refer to  DIAGNOSTIC TROUBLE CODE CHART [08/2014 - ] 
  8. GO TO HYBRID CONTROL SYSTEM. Refer to  DIAGNOSTIC TROUBLE CODE CHART [08/2014 - ] 
  9. REPLACE DRIVING SUPPORT ECU. Refer to  REMOVAL [08/2014 - ]