ACTIVE REAR WING SYSTEM, Diagnostic DTC:B131A, B131E

DTC Code DTC Name
B131A Position Initialization Incomplete
B131E Motor Circuit

DESCRIPTION

DTC B131A is stored when initialization does not complete normally when using the GTS or No. 4 combination switch assembly (spoiler control switch).

DTC B131E is stored when the rear spoiler motor assembly is operated continuously for a certain amount of time.

DTC No. Detection Item DTC Detection Condition Trouble Area
B131A Position Initialization Incomplete Initialization using the GTS or No. 4 combination switch assembly (spoiler control switch) does not complete within 10 seconds.

  • ARW Fuse

  • 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
B131E Motor Circuit The rear spoiler motor assembly is operated continuously for 20 seconds or more.

  • ARW Fuse

  • 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

B000ONZE03

CAUTION / NOTICE / HINT

Note

Inspect the fuses for circuits related to this system 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 HARNESS AND CONNECTOR (SPOILER CONTROL ECU ASSEMBLY POWER SOURCE)


    1. B000S61C04
      *a

      Front view of wire harness connector

      (to Spoiler Control ECU Assembly)

      Disconnect the X79 spoiler control ECU assembly connector.

    2. Measure the voltage according to the value(s) in the table below.

      Standard Voltage
      Tester Connection Switch Condition Specified Condition
      X79-19 (B) - X79-1 (GND) Power switch off 11 to 14 V
      Result
      Result
      OK
      NG

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

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


    1. Disconnect the d2 rear spoiler motor assembly connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      X79-6 (RSM+) - d2-1 (U) Always Below 1 Ω
      X79-6 (RSM+) or d2-1 (U) - Body ground Always 10 kΩ or higher
      X79-7 (RSM-) - d2-5 (D) Always Below 1 Ω
      X79-7 (RSM-) or d2-5 (D) - Body ground Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  4. INSPECT 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

  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

    OK

    REPLACE SPOILER CONTROL ECU ASSEMBLY Click here

    NG

    REPLACE REAR SPOILER MOTOR ASSEMBLY Click here