ACTIVE REAR WING SYSTEM, Diagnostic DTC:B1312

DTC Code DTC Name
B1312 Hall IC Pulse Sensor Main and Sub

DESCRIPTION

This DTC is stored when a malfunction of both Hall IC1 and Hall IC2 is detected.

DTC No. Detection Item DTC Detection Condition Trouble Area
B1312 Hall IC Pulse Sensor Main and Sub The rear spoiler motor assembly locks during a rise or retract operation of the active rear wing, then locks in 5 edge or less when operated in the opposite direction.

  • Foreign object

  • Top cover lock control link sub-assembly LH

  • Top cover lock control link sub-assembly RH

  • Rear spoiler drive gear

  • Rear spoiler motor assembly

  • Spoiler control ECU assembly

  • Harness or connector

WIRING DIAGRAM

B004B8ZE06

CAUTION / NOTICE / HINT

CAUTION:

Be careful not to get pinched by the active rear wing assembly when the active rear wing is operating.

Note

As DTC B1312 may be stored due to the operation of the rear spoiler motor assembly being stopped by the PTC thermistor built into the rear spoiler motor assembly, wait at least 5 minutes before performing the following procedure.

PROCEDURE


  1. CHECK FOR FOREIGN OBJECT


    1. Check that no foreign objects are restricting active rear wing operation.

      OK
      No foreign objects.
      Result
      Proceed to
      OK
      NG

    NG

    REMOVE FOREIGN OBJECT

    OK

  2. CHECK CONNECTOR CONNECTION


    1. Check that the connectors are properly connected to the spoiler control ECU assembly and rear spoiler motor assembly.

      OK
      Connectors are properly connected.
      Result
      Proceed to
      OK
      NG

    NG

    CONNECT CONNECTORS PROPERLY

    OK

  3. CLEAR DTC


    1. Clear the DTCs.

      Click here


      Body Electrical > Active Rear Wing > Clear DTCs
      Result
      Proceed to
      NEXT

    NEXT

  4. CHECK FOR DTC


    1. Raise and retract the active rear wing by manual operation.

      Click here

    2. Check for DTCs.

      Click here


      Body Electrical > Active Rear Wing > Trouble Codes
      OK
      DTC B1312 is not output.
      Result
      Proceed to
      OK
      NG

    OK

    USE SIMULATION METHOD TO CHECK Click here

    NG

  5. INSPECT REAR SPOILER MOTOR ASSEMBLY


    1. Remove the rear spoiler motor assembly.

      Click here

    2. Inspect the rear spoiler motor assembly.

      Click here

      Result
      Proceed to
      OK
      NG

    NG

    REPLACE REAR SPOILER MOTOR ASSEMBLY Click here

    OK

  6. CHECK HARNESS AND CONNECTOR (SPOILER CONTROL ECU ASSEMBLY - REAR SPOILER MOTOR ASSEMBLY)


    1. Disconnect the X79 spoiler control ECU assembly connector.

    2. Disconnect the d2 rear spoiler motor assembly connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      X79-9 (CSG) - d2-7 (E) Always Below 1 Ω
      X79-9 (CSG) or d2-7 (E) - Body ground Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  7. CHECK ACTIVE REAR WING ASSEMBLY


    1. Remove the active rear wing assembly.

      Click here

    2. Visually check the top cover lock control link sub-assembly LH, top cover lock control link sub-assembly RH and rear spoiler drive gear for damage or deformation.

      Tech Tips

      To visually check the top cover lock control link sub-assembly LH and top cover lock control link sub-assembly RH, it is necessary to remove the rear spoiler cover LH and rear spoiler cover RH.

      Click here

      Result
      Result Proceed to
      No damage or deformation A
      Top cover lock control link sub-assembly LH is damaged or deformed B
      Top cover lock control link sub-assembly RH is damaged or deformed C
      Rear spoiler drive gear is damaged or deformed D

    B

    REPLACE TOP COVER LOCK CONTROL LINK SUB-ASSEMBLY LH Click here

    C

    REPLACE TOP COVER LOCK CONTROL LINK SUB-ASSEMBLY RH Click here

    D

    REPLACE REAR SPOILER DRIVE GEAR Click here

    A

  8. INSPECT REAR SPOILER MOTOR ASSEMBLY


    1. Remove the rear spoiler motor assembly.

      Click here

    2. Inspect the rear spoiler motor assembly.

      Click here

      Result
      Proceed to
      OK
      NG

    OK

    REPLACE SPOILER CONTROL ECU ASSEMBLY Click here

    NG

    REPLACE REAR SPOILER MOTOR ASSEMBLY Click here