CRUISE CONTROL SYSTEM, Diagnostic DTC:P1578

DTC Code DTC Name
P1578 Brake System

DESCRIPTION

This DTC is output when the vehicle stability control system has a problem. Check the vehicle stability control system when this DTC is output.

DTC No. Detection Item DTC Detection Condition Trouble Area
P1578 Brake System The ECM receives a brake system error signal for 0.2 seconds or more.

  • Vehicle stability control system

  • Skid control ECU (brake actuator assembly)

  • ECM

CAUTION / NOTICE / HINT

Tech Tips

This circuit uses CAN communication. Therefore, if there are any malfunctions in the communication circuit, one or more DTCs in the CAN communication system are output.

PROCEDURE


  1. CHECK FOR DTCs (ABS/VSC/TRC)


    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/TRC / Trouble Codes.

    5. Check for DTCs.

      Click here


      Chassis > ABS/VSC/TRC > Trouble Codes
      Result
      Result Proceed to
      DTC is not output A
      DTC is output B

    B

    GO TO VEHICLE STABILITY CONTROL SYSTEM Click here

    A

  2. CHECK FOR DTCs (DTC P1578)


    1. Connect the GTS to the DLC3.

    2. Turn the ignition switch to ON.

    3. Turn the GTS on.

    4. Enter the following menus: Powertrain / Cruise Control / Trouble Codes.

    5. Clear the DTCs.

      Click here


      1. for 2AD-FTV, 2AD-FHV:


        Powertrain > Cruise Control > Clear DTCs

      2. for 2AR-FE, 3ZR-FE, 3ZR-FAE:


        Powertrain > Cruise Control > Clear DTCs

      3. for 2WW:


        Powertrain > Cruise Control > Clear DTCs

    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. Enter the following menus: Powertrain / Cruise Control / Trouble Codes.

    8. Check for DTCs.

      Click here


      1. for 2AD-FTV, 2AD-FHV:


        Powertrain > Cruise Control > Trouble Codes

      2. for 2AR-FE, 3ZR-FE, 3ZR-FAE:


        Powertrain > Cruise Control > Trouble Codes

      3. for 2WW:


        Powertrain > Cruise Control > Trouble Codes
      Result
      Result Proceed to
      DTC is not output A
      DTC P1578 is output B

    A

    USE SIMULATION METHOD TO CHECK Click here

    B

  3. REPLACE SKID CONTROL ECU (BRAKE ACTUATOR ASSEMBLY)

    Click here

    Result
    Proceed to
    NEXT

    NEXT

  4. CHECK FOR DTCs (DTC P1578)


    1. Connect the GTS to the DLC3.

    2. Turn the ignition switch to ON.

    3. Turn the GTS on.

    4. Enter the following menus: Powertrain / Cruise Control / Trouble Codes.

    5. Clear the DTCs.

      Click here


      1. for 2AD-FTV, 2AD-FHV:


        Powertrain > Cruise Control > Clear DTCs

      2. for 2AR-FE, 3ZR-FE, 3ZR-FAE:


        Powertrain > Cruise Control > Clear DTCs

      3. for 2WW:


        Powertrain > Cruise Control > Clear DTCs

    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. Enter the following menus: Powertrain / Cruise Control / Trouble Codes.

    8. Check for DTCs.

      Click here


      1. for 2AD-FTV, 2AD-FHV:


        Powertrain > Cruise Control > Trouble Codes

      2. for 2AR-FE, 3ZR-FE, 3ZR-FAE:


        Powertrain > Cruise Control > Trouble Codes

      3. for 2WW:


        Powertrain > Cruise Control > Trouble Codes
      Result
      Result Proceed to
      DTC is not output A
      DTC P1578 is output B

    A

    END

    B

    REPLACE ECM for 2AD-FHV: Click here
    REPLACE ECM for 2AD-FTV: Click here
    REPLACE ECM for 2AR-FE: Click here
    REPLACE ECM for 3ZR-FAE: Click here
    REPLACE ECM for 3ZR-FE: Click here
    REPLACE ECM for 2WW: Click here