CRUISE CONTROL SYSTEM(for 8AR-FTS), Diagnostic DTC:P157800

DTC Code DTC Name
P157800 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 P157800 is output.

DTC No. Detection Item DTC Detection Condition Trouble Area Note
P157800 Brake System

Diagnosis Condition: Cruise control in operation

Malfunction Status: Brake System Malfunction

  • Vehicle stability control system

  • ECM

 SAE: P1578

CAUTION / NOTICE / HINT

Note

When this DTC is output, confirm that the vehicle stability control system is normal since it may be malfunctioning.

Click here

PROCEDURE


  1. CHECK FOR VEHICLE STABILITY CONTROL 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: Chassis / ABS/VSC/TRC / Trouble Codes.

    5. Check for DTCs.

      Click here


      Chassis > ABS/VSC/TRAC > Trouble Codes
      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. Clear the DTCs.

      Click here


      Powertrain > Cruise Control > Clear DTCs

    2. 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 for which cruise control operation is possible.

      2. Turn the cruise control system on using the cruise control main switch (ON/OFF).

      3. Push the cruise control main switch to -SET to begin control of vehicle speed using the cruise control system.

    3. Check the DTCs.

      Click here


      Powertrain > Cruise Control > Trouble Codes
      Result
      Result Proceed to
      DTC P157800 is not output A
      DTC P157800 is output B

    A

    USE SIMULATION METHOD TO CHECK Click here

    B

    REPLACE ECM Click here