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 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
P1585

  1. Ignition switch ON

  2. The output value of the deceleration sensor remains at -1.5 G or less, or 1.5 G or more for at least 1.2 seconds.

  3. 0.5 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 power source voltage to the deceleration sensor remains at 4.4 V or less, or 5.6 V or higher for at least 1.2 seconds.

  3. 0.5 seconds or more

  4. 1 trip detection logic

  1. Ignition switch ON

  2. No signal from the deceleration sensor is detected 7 times or more.

  3. 0.5 seconds or more

  4. 1 trip detection logic

  1. Ignition switch ON

  2. 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. 0.5 seconds or more

  4. 1 trip detection logic

  1. Ignition switch ON

  2. 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. 0.5 seconds or more

  4. 1 trip detection logic

WIRING DIAGRAM

A01VGV1E02
*1 Brake Actuator Assembly (Skid Control ECU)
*2 Airbag Sensor Assembly (Yaw Rate Sensor)
*3 CAN Communication Line

PROCEDURE


  1. CHECK DTC OUTPUT (CAN COMMUNICATION SYSTEM)


    1. Check for DTCs of the CAN communication system.

      Result
      Result Proceed to
      DTCs are not output A
      DTCs are output (w/o Toyota Safety Sense) B
      DTCs are output (w/ Toyota Safety Sense) C

    B

    GO TO CAN COMMUNICATION SYSTEM Click here

    C

    GO TO CAN COMMUNICATION SYSTEM 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 TMMF made LHD) B
      Data display is within Normal Condition range (for TMMF made RHD) C

    B

    REPLACE BRAKE ACTUATOR ASSEMBLY Click here

    C

    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