DYNAMIC RADAR CRUISE CONTROL SYSTEM, Diagnostic DTC:C1A50

DTC Code DTC Name
C1A50 Brake System

DESCRIPTION

When the driving support ECU receives an electronically controlled brake 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 signal malfunction from skid control ECU continues for 1 second while dynamic radar cruise control is operating

  • Electronically controlled brake system

  • Driving support ECU

WIRING DIAGRAM

A01NE3LE02

INSPECTION PROCEDURE

PROCEDURE


  1. READ OUTPUT DTC (ELECTRONICALLY CONTROLLED BRAKE SYSTEM)


    1. Connect the intelligent tester to the DLC3.

    2. Turn the power switch on (IG).

    3. Turn the tester on.

    4. Enter the following menus: Chassis / ABS / VSC / TRC / DTC.

    5. Read the DTCs.

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

    B

    GO TO ELECTRONICALLY CONTROLLED BRAKE SYSTEM Click here

    A

  2. CHECK WHETHER DTC OUTPUT RECURS (DTC C1A50)


    1. Connect the intelligent tester to the DLC3.

    2. Turn the power switch on (IG).

    3. Clear the DTCs Click here.

    4. Perform the following to make sure that the DTC detection conditions are met.

      Tech Tips

      If the detection conditions are not met, the malfunction cannot be detected.


      1. Drive the vehicle at a speed of 40 km/h (25 mph) or more.

      2. Turn the cruise control main switch on.

      3. Push the -SET switch to activate the cruise control.

    5. Enter the following menus: Powertrain / Radar Cruise / DTC.

    6. Read the DTCs.

      Result
      Result Proceed to
      DTC is not output A
      DTC C1A50 is output B

    B

    REPLACE DRIVING SUPPORT ECU Click here

    A

    USE SIMULATION METHOD TO CHECK Click here

  3. REPLACE DRIVING SUPPORT ECU


    1. Replace the driving support ECU Click here.


    NEXT

  4. CHECK WHETHER DTC OUTPUT RECURS (DTC C1A50)


    1. Connect the intelligent tester to the DLC3.

    2. Turn the power switch on (IG).

    3. Clear the DTCs Click here.

    4. Perform the following to make sure that the DTC detection conditions are met.

      Tech Tips

      If the detection conditions are not met, the malfunction cannot be detected.


      1. Drive the vehicle at a speed of 40 km/h (25 mph) or more.

      2. Turn the cruise control main switch on.

      3. Push the -SET switch to activate the cruise control.

    5. Enter the following menus: Powertrain / Radar Cruise / DTC.

    6. Read the DTCs.

      Result
      Result Proceed to
      DTC is not output A
      DTC C1A50 is output B

    B

    REPLACE SKID CONTROL ECU Click here

    A

    END

  5. REPLACE SKID CONTROL ECU


    1. Replace the skid control ECU Click here.


    NEXT

  6. CHECK WHETHER DTC OUTPUT RECURS (DTC C1A50)


    1. Connect the intelligent tester to the DLC3.

    2. Turn the power switch on (IG).

    3. Clear the DTCs Click here.

    4. Perform the following to make sure that the DTC detection conditions are met.

      Tech Tips

      If the detection conditions are not met, the malfunction cannot be detected.


      1. Drive the vehicle at a speed of 40 km/h (25 mph) or more.

      2. Turn the cruise control main switch on.

      3. Push the -SET switch to activate the cruise control.

    5. Enter the following menus: Powertrain / Radar Cruise / DTC.

    6. Read the DTCs.

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

    B

    REPLACE POWER MANAGEMENT CONTROL ECU (for LHD) Click here

    C

    REPLACE POWER MANAGEMENT CONTROL ECU (for RHD) Click here

    A

    END