DYNAMIC RADAR CRUISE CONTROL SYSTEM, Diagnostic DTC:P1578

DTC Code DTC Name
P1578 Brake System

DESCRIPTION

This DTC is stored when a malfunction is detected in the vehicle stability control system. Check the vehicle stability control system when DTC P157800 is stored.

DTC No. Detection Item DTC Detection Condition Trouble Area
P1578 Brake System While the vehicle speed is 36 km/h (22 mph) or more and the dynamic radar cruise control system is operating, a malfunction in the vehicle stability control system is detected for 0.2 seconds or more.

  • Vehicle stability control system

  • ECM

CAUTION / NOTICE / HINT

Note


  • Before replacing the ECM, refer to Service Bulletin.

  • 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. Check for DTCs.

      for Vacuum Brake Booster: Click here

      for Hydraulic Brake Booster: Click here

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

    B

    GO TO VEHICLE STABILITY CONTROL SYSTEM for Vacuum Brake Booster: Click here
    GO TO VEHICLE STABILITY CONTROL SYSTEM for Hydraulic Brake Booster: Click here

    A

  2. CHECK FOR DTCs


    1. Connect the GTS to the DLC3.

    2. Turn the ignition switch to ON.

    3. Clear the DTCs.

      Click here

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

      Tech Tips

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

    5. Check for DTCs.

      Click here

      Result
      Result Proceed to
      DTC P1578 is not output A
      DTC P1578 is output B

    A

    USE SIMULATION METHOD TO CHECK Click here

    B

  3. CHECK FOR DTCs


    1. Connect the GTS to the DLC3.

    2. Turn the ignition switch to ON.

    3. Clear the DTCs.

      Click here

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

      Tech Tips

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

    5. Check for DTCs.

      Click here

      Result
      Result Proceed to
      DTC P1578 is not output A
      DTC P1578 is output B

    A

    END

    B

    REPLACE ECM for 1GR-FE: Click here
    REPLACE ECM for 1KD-FTV: Click here
    REPLACE ECM for 1GD-FTV: Click here
    REPLACE ECM for 2TR-FE: Click here