PRE-COLLISION SYSTEM, Diagnostic DTC:C1A62

DTC Code DTC Name
C1A62 Brake Control Signal Malfunction

DESCRIPTION

The skid control ECU (brake actuator assembly) receives brake control request signals from the pre-collision city sensor. When the skid control ECU (brake actuator assembly) determines that there is a malfunction in the request signal from the pre-collision city sensor, the ECU sends a brake control malfunction signal to the pre-collision city sensor. This DTC is stored when the pre-collision city sensor receives a malfunction signal.

DTC No. DTC Detection Condition Trouble Area
C1A62

Both of the following conditions are met:


  1. All of the following conditions are met:


    • 3 seconds have elapsed since the ignition switch was turned on (IG).

    • The battery voltage is 10 V or more for 3 seconds or more.

  2. Both of the following conditions are met for 1 second or more:


    • Communication between the pre-collision city sensor and skid control ECU (brake actuator assembly) is normal.

    • The pre-collision city sensor receives a brake system malfunction signal from the skid control ECU (brake actuator assembly).

  • Vehicle stability control system

  • Skid control ECU (Brake actuator assembly)

  • Pre-collision city sensor

CAUTION / NOTICE / HINT

Note


  • When replacing the pre-collision city sensor, replace it with a new one and be sure to initialize the settings. If a pre-collision city sensor which was installed to another vehicle is used, the information stored in the pre-collision city sensor will not match the information from the vehicle and, as a result, a DTC may be stored.

  • If the pre-collision city sensor has been replaced, or the windshield glass has been replaced or removed/installed, be sure to perform Pre-collision City Sensor Learning Click here.

  • First check the CAN communication system by following How to Proceed with Troubleshooting. After checking that there are no malfunctions in the CAN communication system, proceed with troubleshooting Click here.

PROCEDURE


  1. CHECK FOR DTCS (VEHICLE STABILITY CONTROL SYSTEM)


    1. Connect the GTS to the DLC3.

    2. Turn the ignition switch to ON.

    3. Turn the GTS on.

    4. Enter the following menus: Chassis / ABS/VSC/TRAC / Trouble Codes.

    5. Check for DTCs Click here.

      Result
      Result Proceed to
      Vehicle stability control system DTCs are not output A
      Vehicle stability control system DTCs are output B

    B

    GO TO VEHICLE STABILITY CONTROL SYSTEM Click here

    A

  2. CHECK FOR DTCS


    1. Connect the GTS to the DLC3.

    2. Turn the ignition switch to ON.

    3. Turn the GTS on.

    4. Enter the following menus: Chassis / PCS/LDA/RSA/LVN / Trouble Codes.

    5. Clear the DTCs Click here.

    6. Make sure that the DTC detection conditions are met.

      Tech Tips

      If the detection conditions are not met, the system cannot detect the malfunction.

    7. Check for DTCs Click here.

      Result
      Result Proceed to
      DTC C1A62 is not output A
      DTC C1A62 is output B

    A

    USE SIMULATION METHOD TO CHECK Click here

    B

  3. REPLACE PRE-COLLISION CITY SENSOR


    1. Replace the pre-collision city sensor Click here.

    2. Perform Pre-collision City Sensor Learning Click here.


    NEXT

  4. CHECK FOR DTCS


    1. Connect the GTS to the DLC3.

    2. Turn the ignition switch to ON.

    3. Turn the GTS on.

    4. Enter the following menus: Chassis / PCS/LDA/RSA/LVN / Trouble Codes.

    5. Clear the DTCs Click here.

    6. Make sure that the DTC detection conditions are met.

      Tech Tips

      If the detection conditions are not met, the system cannot detect the malfunction.

    7. Check for DTCs Click here.

      Result
      Result Proceed to
      DTC C1A62 is not output A
      DTC C1A62 is output B

    A

    END (PRE-COLLISION CITY SENSOR WAS DEFECTIVE)

    B

    REPLACE SKID CONTROL ECU (BRAKE ACTUATOR ASSEMBLY) Click here