ACTIVE STABILIZER SUSPENSION SYSTEM, Diagnostic DTC:C1905

DTC Code DTC Name
C1905 Timeout Initialization Check of Rear Actuator

DESCRIPTION

Immediately after turning the power switch on (READY), the rear active stabilizer control ECU checks the condition of the active stabilizer suspension system. If there is a malfunction during the check, the initial check does not complete, resulting in the output of DTC C1905. Also, the initial check can determine if the rear active stabilizer control ECU is in the front or rear of the vehicle, and if the front active stabilizer control ECU is in the front or rear of the vehicle. This DTC is output by a normally recognized rear active stabilizer control ECU when a malfunction in the front side occurs.

DTC No. DTC Detection Condition Trouble Area
C1905 Immediately after power switch is turned on (READY), initial check is started but does not complete after 30 seconds have elapsed

  • Harness or connector

  • Power steering system

  • IG and PIG power source circuits

  • Front active stabilizer control actuator assembly

  • Front active stabilizer control ECU

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 DTC (C1959, C193C)


    1. Turn the power switch off.

    2. Connect the intelligent tester to the DLC3.

    3. Turn the power switch on (READY) and the intelligent tester on.

    4. Check that front active stabilizer side DTCs (C1959 and/or C193C) are not output Click here.

      OK
      DTCs C1959 and/or C193C are not output.

    NG

    GO TO DTC CHART Click here

    OK

  3. CHECK DTC (POWER STEERING SYSTEM)


    1. Turn the power switch off.

    2. Connect the intelligent tester to the DLC3.

    3. Turn the power switch on (READY) and the intelligent tester on.

    4. Check that power steering system DTCs are not output Click here.

      OK
      DTC is not output.

    NG

    GO TO POWER STEERING SYSTEM (DIAGNOSTIC TROUBLE CODE CHART) Click here

    OK

  4. 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

  5. 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 DTC Click here.


    NEXT

  6. 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 front active stabilizer DTCs Click here.

      OK
      DTC C192D is not output.

      Tech Tips

      Interchange the front and rear active stabilizer control ECUs and check for DTCs. After interchanging the ECUs, if a front active stabilizer DTC is stored, it can be determined that the front active stabilizer control ECU is malfunctioning.


    NG

    REPLACE ACTIVE STABILIZER CONTROL ECU ASSEMBLY Click here

    OK

    REPLACE POWER STEERING CONVERTER ASSEMBLY Click here