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.

Tip:

  • 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.

  3. 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.

  5. Malfunction Time

    • 0.5 seconds or more

  7. Other

    • 1-trip detection logic

  1. Diagnosis Condition

    • The ignition switch is ON.

  3. 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.

  5. Malfunction Time

    • 0.5 seconds or more

  7. Other

    • 1-trip detection logic

  1. Diagnosis Condition

    • The ignition switch is ON.

  3. Malfunction Status

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

  5. Malfunction Time

    • 0.5 seconds or more

  7. Other

    • 1-trip detection logic

  1. Diagnosis Condition

    • The ignition switch is ON.

  3. 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.

  5. Malfunction Time

    • 0.5 seconds or more

  7. Other

    • 1-trip detection logic

  1. Diagnosis Condition

    • The ignition switch is ON.

  3. 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.

  5. Malfunction Time

    • 0.5 seconds or more

  7. 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

C264292E11

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 hereClick hereClick 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 hereClick hereClick 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 ASSEMBLY

    Click hereClick 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