ACTIVE STABILIZER SUSPENSION SYSTEM, Diagnostic DTC:C1983

DTC Code DTC Name
C1983 Front Motor Rotate Angle Sensor Malfunction

DESCRIPTION

DTC No. Detection Item DTC Detection Condition Trouble Area Note
C1983 Front Motor Rotate Angle Sensor Malfunction After the engine switch is turned on (IG), the power supply voltage is 9 V or higher, and a motor rotation angle sensor malfunction is detected in the front active stabilizer control actuator assembly continuously for 0.2 seconds or more

  • Front active stabilizer control actuator assembly

  • Front active stabilizer control ECU assembly

 -

WIRING DIAGRAM

B0069WAE03

CAUTION / NOTICE / HINT

Note

When the front active stabilizer control ECU assembly or front active stabilizer control actuator assembly are replaced, perform motor rotation angle sensor calibration (Front Stabilizer).

Click here

PROCEDURE


  1. CHECK FOR DTC


    1. Using the GTS, check for DTCs.

      Click here


      Chassis > Front Stabilizer > Trouble Codes
      Result
      Result Proceed to
      Output as past DTC A
      Output as current DTC B

    B

    GO TO STEP 3 Click here

    A

  2. CHECK CONNECTOR CONNECTION CONDITION


    1. Turn the engine switch off.

    2. Check that front active stabilizer control ECU assembly connector is not loose or disconnected.

      OK
      The connector is not loose or disconnected.
      Result
      Proceed to
      OK
      NG

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  3. CLEAR DTC


    1. Using the GTS, clear the DTC.

      Click here


      Chassis > Front Stabilizer > Clear DTCs

    2. Turn the engine switch off.

      Result
      Proceed to
      NEXT

    NEXT

  4. PERFORM MOTOR ROTATION ANGLE SENSOR CALIBRATION (FRONT STABILIZER)


    1. Perform motor rotation angle sensor calibration (Front Stabilizer) and check the operation of the front active stabilizer.

      Click here

      Result
      Proceed to
      NEXT

    NEXT

  5. CHECK FOR DTC


    1. Using the GTS, check for DTCs.

      Click here


      Chassis > Front Stabilizer > Trouble Codes
      Result
      Result Proceed to
      DTC C1983 is output A
      DTC C1983 is not output B

    B

    USE SIMULATION METHOD TO CHECK Click here

    A

  6. CONFIRM FREEZE FRAME DATA (MOTOR RESOLVER SIN PHASE OFFSET, MOTOR RESOLVER COS PHASE OFFSET)


    1. Check "Motor Resolver SIN Phase Offset" and "Motor Resolver COS Phase Offset" in the Freeze Frame Data.

      Click here


      Chassis > Front Stabilizer
      Tester Display Measurement Item Range Normal Condition Diagnostic Note
      Motor Resolver SIN Phase Offset Motor resolver SIN phase offset 0.00 to 19.99 V 8.00 to 12.00 V -
      Motor Resolver COS Phase Offset Motor resolver COS phase offset 0.00 to 19.99 V 8.00 to 12.00 V -

      Chassis > Front Stabilizer > DTC(C1983) > Freeze Frame Data
      Tester Display
      Motor Resolver SIN Phase Offset
      Motor Resolver COS Phase Offset
      Result
      Result Proceed to
      The display for "Motor Resolver SIN Phase Offset" and "Motor Resolver COS Phase Offset" shows 5 V or higher A
      Other than above B

    B

    REPLACE FRONT ACTIVE STABILIZER CONTROL ECU ASSEMBLY Click here

    A

  7. INSPECT FRONT ACTIVE STABILIZER CONTROL ACTUATOR ASSEMBLY


    1. Turn the engine switch off.

    2. Disconnect connector z44 of the front active stabilizer control actuator assembly from the front active stabilizer control ECU assembly.

    3. Check the front active stabilizer control actuator assembly.

      Standard Resistance
      Tester Connection Condition Specified Condition
      z44-3 (MRV) - z44-2 (MRG) Always 30 to 60 Ω
      z44-8 (MS1) - z44-2 (MRG) Always 100 to 230 Ω
      z44-7 (MS2) - z44-2 (MRG) Always 100 to 240 Ω
      z44-3 (MRV) - z44-8 (MS1) Always 120 to 290 Ω
      z44-3 (MRV) - z44-7 (MS2) Always 130 to 310 Ω
      z44-8 (MS1) - z44-7 (MS2) Always 190 to 477 Ω
      z44-8 (MS1) - Body ground Always 100 kΩ or higher
      z44-7 (MS2) - Body ground Always 100 kΩ or higher
      z44-2 (MRG) - Body ground Always 100 kΩ or higher
      z44-3 (MRV) - Body ground Always 100 kΩ or higher

    4. Connect connector z44 of the front active stabilizer control actuator assembly to the front active stabilizer control ECU assembly.

      Result
      Proceed to
      OK
      NG

    OK

    REPLACE FRONT ACTIVE STABILIZER CONTROL ECU ASSEMBLY Click here

    NG

    REPLACE FRONT ACTIVE STABILIZER CONTROL ACTUATOR ASSEMBLY Click here