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 yaw rate and acceleration sensor to perform neutral control. If a malfunction is determined in the yaw rate and acceleration sensor based on a malfunction signal from the brake actuator assembly, the ECM cancels neutral control as a fail-safe function.

Tech Tips


  • The ECM receives a yaw rate and acceleration sensor signal from the brake actuator assembly via CAN communication.

    If a CAN communication DTC is output, perform troubleshooting for that DTC 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

  • Yaw rate and acceleration sensor

  • Brake actuator assembly

    (Skid control ECU)

  • CAN communication system

  1. Ignition switch ON

  2. The yaw rate and acceleration 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

A011BQEE02

INSPECTION PROCEDURE

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 Click here

    A

  2. CHECK OTHER DTC OUTPUT (IN ADDITION TO DTC P1586)


    1. Clear the DTCs Click here.

    2. Perform a road test where the vehicle is driven at 30 km/ h (18 mph) or more, the brakes are applied at least 16 times and the vehicle is finally stopped.

    3. Connect the intelligent tester to the DLC3.

    4. Turn the ignition switch to ON.

    5. Turn the tester on.

    6. Enter the following menus: Powertrain / Engine and ECT / DTC / Current or Pending.

    7. Read the DTCs using the tester.

      Result
      Result Proceed to
      Only P1586 is output A
      P1586 and other DTCs are output B

      Tech Tips

      If any other codes besides DTC P1586 are output, perform troubleshooting for those DTCs first.


    B

    GO TO DTC CHART Click here

    A

  3. READ VALUE USING INTELLIGENT TESTER


    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 yaw rate and acceleration sensor/

      min.: 0 V

      max.: 5 V

      Displays converted voltage of yaw rate and acceleration sensor


      • Vehicle on level ground: 2.31 V to 2.69 V

      • Decelerating: 1.88 V to (2.5) V

      • Accelerating: (2.5) V to 3.11 V

      • G sensor malfunction: set to 1.87 V

      • Communication malfunction: set to 1.87 V

      		 -
      Result
      Result Proceed to
      Data display is not within Normal Condition range A
      Data display is within Normal Condition range B

    B

    REPLACE BRAKE ACTUATOR ASSEMBLY Click here

    A

  4. REPLACE YAW RATE AND ACCELERATION SENSOR


    1. Replace yaw rate and acceleration sensor Click here.


    NEXT

  5. PERFORM INITIALIZATION


    1. Perform the initialization Click here.

    2. Check for DTCs again Click here.


    NEXT

    END