CONTINUOUSLY VARIABLE TRANSAXLE SYSTEM, Diagnostic DTC:P1585

DTC Code DTC Name
P1585 Acceleration Sensor Circuit

DESCRIPTION

The ECM determines the vehicle inclination based on a signal from the airbag sensor assembly (yaw rate and acceleration sensor). If a malfunction is determined in the airbag sensor assembly (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 signal of the airbag sensor assembly (yaw rate and acceleration 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. Detection Item DTC Detection Condition Trouble Area MIL Memory
P1585 Acceleration Sensor Circuit

  1. Diagnosis Condition


    • The ignition switch is ON.

  2. Malfunction Status


    • The output value of the yaw rate and acceleration sensor remains at -1.5 G or less, or 1.5 G or more for at least 1.2 seconds.

  3. Malfunction Time


    • 0.5 seconds or more

  4. Other


    • 1-trip detection logic


  1. Diagnosis Condition


    • The ignition switch is ON.

  2. Malfunction Status


    • The power source voltage to the yaw rate and acceleration sensor remains at 4.4 V or less, or 5.6 V or higher for at least 1.2 seconds.

  3. Malfunction Time


    • 0.5 seconds or more

  4. Other


    • 1-trip detection logic


  1. Diagnosis Condition


    • The ignition switch is ON.

  2. Malfunction Status


    • No signal from the yaw rate and acceleration sensor is detected 7 times or more.

  3. Malfunction Time


    • 0.5 seconds or more

  4. Other


    • 1-trip detection logic


  1. Diagnosis Condition


    • The ignition switch is ON.

  2. Malfunction Status


    • With the vehicle stopped, the difference between GL1 and GL2 does not become less than 0.4 G within 60 seconds after exceeding 0.6 G.

  3. Malfunction Time


    • 0.5 seconds or more

  4. Other


    • 1-trip detection logic


  1. Diagnosis Condition


    • The ignition switch is ON.

  2. Malfunction Status


    • A yaw rate sensor power source voltage malfunction signal is received for at least 10 seconds with the vehicle speed at 3 km/h (1.8 mph) or more.

  3. Malfunction Time


    • 0.5 seconds or more

  4. Other


    • 1-trip detection logic

  • Airbag sensor assembly (Yaw rate and acceleration sensor)

  • Brake actuator assembly (Skid control ECU)

  • CAN communication system

 Does not come on DTC stored

WIRING DIAGRAM

A01TAESE11
*1 Brake actuator assembly (Skid control ECU)
*2 to CAN communication system
*3 Airbag sensor assembly (Yaw rate and acceleration sensor)
*4 CAN Communication Line

PROCEDURE


  1. CHECK DTC OUTPUT


    1. Connect the GTS to the DLC3.

    2. Turn the ignition switch to ON.

    3. Turn the GTS on.

    4. Check for DTCs.

      Click here


      Powertrain > Engine and ECT > Trouble Codes
      Result
      Result Proceed to
      DTC U0129 is not output A
      DTC U0129 is output B

    B

    GO TO CAN COMMUNICATION SYSTEM Click here

    A

  2. READ VALUE USING GTS (G SENSOR)


    1. Connect the GTS to the DLC3.

    2. Turn the ignition switch to ON.

    3. Turn the GTS on.

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

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


      Powertrain > Engine and ECT > 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


      • 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 B

    B

    REPLACE BRAKE ACTUATOR BRACKET ASSEMBLY Click here

    A

  3. REPLACE AIR BAG SENSOR ASSEMBLY (YAW RATE AND ACCELERATION SENSOR)


    1. Replace the airbag sensor assembly (yaw rate and acceleration sensor).

      Click here

      Result
      Proceed to
      NEXT

    NEXT

  4. PERFORM INITIALIZATION

    Note


    • Performing Reset Memory will clear the learned value of the yaw rate and acceleration sensor (deceleration sensor zero point calibration) and the CVT oil pressure (CVT oil pressure calibration). Make sure to perform Reset Memory, yaw rate and acceleration sensor zero point calibration, and CVT oil pressure calibration when replacing any of the parts shown in the following table:

      Replaced Part

      • Continuously variable transaxle assembly

      • ECM

      • Oil pressure sensor

      • Airbag sensor assembly (Yaw rate and acceleration sensor)

    • After performing Reset Memory, always perform yaw rate and acceleration sensor (deceleration sensor zero point) calibration first, and then CVT oil pressure calibration.

    • Always perform calibration with the vehicle on level ground.

    • Do not shake or vibrate the vehicle during calibration.


    1. Using the GTS, perform Reset Memory, deceleration sensor zero point calibration and CVT oil pressure calibration.

      Click here

    2. Check for DTCs again.

      Click here

      Result
      Proceed to
      NEXT

    NEXT

    END