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 assembly, DTC C194A, C194B and/or C194C are output.

DTC No. DTC Detection Condition Trouble Area
C194A Open in motor driver detected

  • Harness or connector

  • Front active stabilizer control actuator assembly

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

WIRING DIAGRAM

A01NFQRE04

INSPECTION PROCEDURE

PROCEDURE


  1. CHECK CONNECTOR CONNECTION CONDITION


    1. Turn the power switch off.

    2. Check that the wire harness connectors between the front active stabilizer control ECU and front active stabilizer control actuator assembly are not loose or disconnected and that the wire harness is not damaged.

      OK
      Connectors are not loose or disconnected. Wire harness is not damaged.

      Tech Tips

      If the wire harness of the front active stabilizer control actuator assembly is damaged, replace the front active stabilizer control actuator assembly Click here.


    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  2. CHECK HARNESS AND CONNECTOR (FRONT ACTIVE STABILIZER CONTROL ECU - FRONT ACTIVE STABILIZER CONTROL ACTUATOR ASSEMBLY)


    1. Turn the power switch off.

    2. Disconnect the g14 ECU connector.

    3. Disconnect the g16 actuator connector.

    4. Measure the resistance according to the value(s) in the table below.

      Standard Resistance
      Tester Connection Condition Specified Condition
      g14-1 (W) - g16-1 (W) Always Below 1 Ω
      g14-1 (W) - Body ground Always 10 kΩ or higher
      g14-2 (U) - g16-2 (U) Always Below 1 Ω
      g14-2 (U) - Body ground Always 10 kΩ or higher
      g14-3 (V) - g16-3 (V) Always Below 1 Ω
      g14-3 (V) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  3. INTERCHANGE FRONT AND REAR ACTIVE STABILIZER CONTROL ECU


    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 Click here.


    NEXT

  4. 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 intelligent tester on.

    4. Clear the DTCs Click here.


    NEXT

  5. CHECK OPERATION OF FRONT ACTIVE STABILIZER CONTROL ECU


    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 active stabilizer DTCs Click here.

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

      Tech Tips

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


    NG

    REPLACE ACTIVE STABILIZER CONTROL ECU ASSEMBLY Click here

    OK

    REPLACE FRONT ACTIVE STABILIZER CONTROL ACTUATOR ASSEMBLY Click here