PRE-CRASH SAFETY SYSTEM, Diagnostic DTC:C1A50

DTC Code DTC Name
C1A50 Brake System

DESCRIPTION

When the driving support ECU receives an VSC system malfunction signal from the skid control ECU via the CAN communication line, DTC C1A50 is stored.

DTC No. DTC Detection Condition Trouble Area
C1A50 When the vehicle speed is 5 km/h (4 mph) or more, a airbag sensor assembly (yaw rate sensor) malfunction signal is received from the brake actuator assembly (skid control ECU).

  • CAN communication system

  • VSC system

  • Driving support ECU assembly

INSPECTION PROCEDURE

Tech Tips

This circuit uses CAN communication. Therefore, be sure to check that the CAN communication system is normal before performing inspection.

PROCEDURE


  1. CHECK DTC OUTPUT (VSC SYSTEM)


    1. Check for VSC system DTCs Click here.

      OK
      VSC system DTCs are not output.

    NG

    GO TO VSC SYSTEM Click here

    OK

  2. REPLACE BRAKE ACTUATOR ASSEMBLY


    1. Replace the brake actuator assembly (skid control ECU) Click here.


    NEXT

  3. CHECK DTC OUTPUT (PRE-CRASH SAFETY SYSTEM)


    1. Connect the GTS to the DLC3.

    2. Turn the engine switch on (IG).

    3. Turn the GTS on.

    4. Enter the following menus: Body Electrical / Pre-Crash 2 / Trouble Codes.

    5. Clear the DTCs Click here.

    6. Drive the vehicle.

    7. Recheck for DTCs.

      Result
      Result Proceed to
      DTC C1A50 is not output. A
      DTC C1A50 is output (for LHD). B
      DTC C1A50 is output (for RHD). C

    B

    REPLACE DRIVING SUPPORT ECU ASSEMBLY Click here

    C

    REPLACE DRIVING SUPPORT ECU ASSEMBLY Click here

    A

    END (BRAKE ACTUATOR ASSEMBLY WAS DEFECTIVE)