CONTINUOUSLY VARIABLE TRANSAXLE SYSTEM, Diagnostic DTC:P1586

DTC Code DTC Name
P1586 Acceleration Sensor Malfunction

DESCRIPTION

The ECM determines the vehicle inclination based on a signal from the airbag sensor assembly (yaw rate sensor) to perform neutral control. If a malfunction is determined in the airbag sensor assembly (yaw rate sensor) based on a malfunction signal from the brake actuator assembly, the ECM cancels neutral control as a fail-safe function.

Tech Tips


  • The signal of the airbag sensor assembly (yaw rate sensor) is sent to the brake actuator assembly via the CAN communication system.

  • If CAN communication DTCs are output, perform troubleshooting for those DTCs first.

DTC No.

DTC Detection Condition


  1. Diagnosis Condition

  2. Malfunction Status

  3. Malfunction Time

  4. Other

 Trouble Area
P1586

  1. Ignition switch ON

  2. With the vehicle speed 30 km/h (18 mph) or more, the difference between longitudinal G calculated based on the G sensor value and longitudinal G calculated based on the vehicle speed exceeds 0.35 G for 60 seconds or more.

  3. Condition 2 is determined for 3.0 seconds or more.

  4. 1 trip detection logic

  • Airbag sensor assembly

    (Yaw rate sensor)

  • Brake actuator assembly

    (Skid control ECU)

  • CAN communication system

  1. Ignition switch ON

  2. The deceleration sensor or center airbag sensor assembly (yaw rate sensor) signal does not change 16 times or more while the vehicle speed decreases from 30 km/h (18 mph ) to 0 km/h.

  3. Condition 2 is determined for 3.0 seconds or more.

  4. 1 trip detection logic

WIRING DIAGRAM

Refer to P1585 Click here.

PROCEDURE


  1. CHECK DTC OUTPUT (CAN COMMUNICATION SYSTEM)


    1. Check for DTCs of the CAN communication system Click here.

      Result
      Result Proceed to
      DTCs are not output A
      DTCs are output B

    B

    GO TO CAN COMMUNICATION SYSTEM (HOW TO PROCEED WITH TROUBLESHOOTING) Click here

    A

  2. READ VALUE USING INTELLIGENT TESTER (G SENSOR)


    1. Connect the intelligent tester to the DLC3.

    2. Turn the ignition switch to ON.

    3. Turn the tester on.

    4. Enter the following menus: Powertrain / Engine and ECT / Data List.

    5. In accordance with the display on the tester, read the Data List.

      Tester Display Measurement Item/Range Normal Condition Diagnostic Note
      G sensor

      Converted output voltage of deceleration sensor/

      min.: 0 V

      max.: 5 V

      Displays converted voltage of deceleration sensor


      • 2.31 V to 2.69 V: Vehicle on level ground

      • 1.88 V to 2.5 V: Decelerating

      • 2.5 V to 3.11 V: Accelerating

      • Set to 1.87 V: G sensor malfunction

      • Set to 1.87 V: Communication malfunction

      		 -
      Result
      Result Proceed to
      Data display is not within Normal Condition range A
      Data display is within Normal Condition range (for TMC Made LHD) B
      Data display is within Normal Condition range (for TMC Made RHD) C
      Data display is within Normal Condition range (for TMMF Made LHD) D
      Data display is within Normal Condition range (for TMMF Made RHD) E

    B

    REPLACE BRAKE ACTUATOR ASSEMBLY Click here

    C

    REPLACE BRAKE ACTUATOR ASSEMBLY Click here

    D

    REPLACE BRAKE ACTUATOR ASSEMBLY Click here

    E

    REPLACE BRAKE ACTUATOR ASSEMBLY Click here

    A

  3. REPLACE AIRBAG SENSOR ASSEMBLY (YAW RATE SENSOR)

    Replace the airbag sensor assembly (yaw rate sensor) Click here.


    NEXT

  4. PERFORM INITIALIZATION


    1. Perform the initialization Click here.

    2. Check for DTCs again Click here.


    NEXT

    END