VEHICLE STABILITY CONTROL SYSTEM, Diagnostic DTC:C120A

DTC Code DTC Name
C120A ECU Initial Setting Incomplete

DESCRIPTION

w/ Downhill Assist Control or w/ Crawl Control:

When the master cylinder solenoid (skid control ECU) is replaced, the master cylinder solenoid (skid control ECU) must be informed that the vehicle is equipped with downhill assist control and/or crawl control.

DTC No.

Detection Item

DTC Detection Condition

Trouble Area

C120A

ECU Initial Setting Incomplete

The master cylinder solenoid is not informed that the vehicle is equipped with downhill assist control or crawl control and downhill assist control or crawl control operates.

Calibration not performed

PROCEDURE

  1. PERFORM CALIBRATION

    1. Perform calibration.

      Click here

      Note:

      If a DTC is output after replacing the master cylinder solenoid, it is possible that calibration has not been performed or the zero point calibration data was not cleared when calibration was performed.

      Result

      Result

      NEXT
    NEXT

  2. CHECK DTC

    1. Check for DTCs.

      Click here

      Result

      Result

      Proceed to

      DTC is output

      A

      DTC is not output

      B

      Chassis > ABS/VSC/TRC > Trouble Codes

    B

    END

    A

  3. CHECK TEST MODE DTC

    1. Switch the vehicle to test mode, perform the downhill assist control switch or crawl switch signal check, and then check that Test Mode (Signal Check) DTC C1379 is cleared.

      Click here

      Result

      Result

      Proceed to

      Test Mode DTC C1379 is not cleared

      A

      Test Mode DTC C1379 is cleared

      B

      Chassis > ABS/VSC/TRC > Utility

      Tester Display

      Test Mode
    A

    GO TO DTC C1379

    Click here

    B

    USE SIMULATION METHOD TO CHECK

    Click here