ACTIVE STABILIZER SUSPENSION SYSTEM, Diagnostic DTC:C194A, C194B, C194C

DTC Code DTC Name
C194A Open in Front Motor Driver Circuit
C194B Short to GND in Front Motor Driver
C194C Short in Front Motor Driver Circuit

DESCRIPTION

When an open or short is detected in the motor circuit of the front active stabilizer control ECU and front active stabilizer control actuator, DTC C194A, C194B and/or C194C are output.

DTC Code Detection Condition Trouble Area
C194A Open in motor driver detected

  • Harness or connector

  • Front active stabilizer control actuator

  • Front active stabilizer control ECU
C194B Short in motor driver ground detected
C194C Short in motor driver line detected

WIRING DIAGRAM

A01H1R4E02

INSPECTION PROCEDURE

PROCEDURE


  1. CHECK CONNECTOR CONNECTION CONDITION


    1. Turn the power switch OFF.

    2. Inspect the condition of the front active stabilizer control ECU connector terminal.

      OK
      Connector and terminal are not deformed or damaged. Terminal is not loose or corroded.

      Tech Tips

      The harness from the front active stabilizer control actuator to the front active stabilizer control ECU is part of the front active stabilizer control actuator. If the harness is damaged and cannot be repaired, replace the front active stabilizer control actuator assembly Click here.


    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  2. INTERCHANGE FRONT AND REAR ACTIVE STABILIZER CONTROL ECU ASSEMBLY


    1. Turn the power switch OFF.

    2. Interchange the front active stabilizer control ECU with the rear active stabilizer control ECU, and install them securely.

      Tech Tips


      • Interchange the front and rear active stabilizer control ECUs and check for DTCs. After interchanging the ECUs, if a rear stabilizer DTC is displayed, it can be determined that the front active stabilizer control ECU is malfunctioning. If no DTC is output, the front active stabilizer control actuator is malfunctioning.

      • For the ECU removal and installation procedures, refer to the front ECU procedures Click here or the rear ECU procedures Click here.


    NEXT

  3. CLEAR DTC


    1. Turn the power switch OFF.

    2. Connect the intelligent tester to the DLC3.

    3. Turn the power switch ON (IG) and the tester ON.

    4. Clear the DTC Click here.


    NEXT

  4. CHECK OPERATION OF FRONT ACTIVE STABILIZER CONTROL ECU ASSEMBLY


    1. Turn the power switch OFF.

    2. Connect the intelligent tester to the DLC3.

    3. Turn the power switch ON (READY) and wait 30 seconds or more. Then check for rear stabilizer DTCs Click here.

      OK
      DTC C1922, C1923 and/or C1924 are not output

    NG

    REPLACE FRONT ACTIVE STABILIZER CONTROL ECU ASSEMBLY Click here

    OK

    REPLACE FRONT ACTIVE STABILIZER CONTROL ACTUATOR ASSEMBLY Click here