ACTIVE STABILIZER SUSPENSION SYSTEM, Diagnostic DTC:C1912

DTC Code DTC Name
C1912 Malfunction in Rear Active Stabilizer Control ECU Short Relay Power Supply IC

DESCRIPTION

When a malfunction is detected in the motor short relay power supply IC of the rear active stabilizer control ECU, DTC C1912 is output.

DTC No. DTC Detection Condition Trouble Area
C1912 Malfunction is detected in motor short relay power supply IC of rear active stabilizer control ECU

  • Rear active stabilizer control actuator assembly

  • Rear active stabilizer control ECU

WIRING DIAGRAM

Click here.

INSPECTION PROCEDURE

PROCEDURE


  1. CHECK CONNECTOR CONNECTION CONDITION


    1. Turn the power switch off.

    2. Check that the wire harness connectors between the rear active stabilizer control ECU and rear 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 rear active stabilizer control actuator assembly is damaged, replace the rear active stabilizer control actuator assembly Click here.


    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  2. INTERCHANGE FRONT AND REAR ACTIVE STABILIZER CONTROL ECU


    1. Turn the power switch off.

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

    4. Clear the DTC Click here.


    NEXT

  4. CHECK OPERATION OF REAR 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 C1938 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 rear active stabilizer control ECU is malfunctioning. If no DTC is stored, the rear active stabilizer control actuator assembly is malfunctioning.


    NG

    REPLACE ACTIVE STABILIZER CONTROL ECU ASSEMBLY Click here

    OK

    REPLACE REAR ACTIVE STABILIZER CONTROL ACTUATOR ASSEMBLY Click here