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 deceleration sensor or air bag sensor assembly (yaw rate sensor) to perform neutral control. If a malfunction is determined in the deceleration sensor or air bag 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

  • Deceleration sensor

  • 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

A005HEVE01
A005KYXE01

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. 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


      • Vehicle on level ground: 2.31 to 2.69 V

      • Decelerating: 0.5 to (2.5) V

      • Accelerating: (2.5) to 4.5 V

      • Open in deceleration sensor circuit: 4.5 V

      • Short in deceleration sensor circuit: 0.5 V or less

      		 -
      Result
      Result Proceed to
      Data display is not within Normal Condition range (w/o VSC) A
      Data display is within Normal Condition range (w/o VSC) B
      Data display is not within Normal Condition range (w/ VSC) C
      Data display is within Normal Condition range (w/ VSC) D

    B

    CHECK DTC OUTPUT Click here

    C

    REPLACE AIR BAG SENSOR ASSEMBLY (YAW RATE SENSOR) Click here

    D

    REPLACE BRAKE ACTUATOR ASSEMBLY (SKID CONTROL ECU) Click here

    A

  3. CHECK HARNESS AND CONNECTOR (SKID CONTROL ECU - DECELERATION SENSOR)


    1. Disconnect the A55 (for RHD) or A57 (for LHD) skid control ECU connector.

    2. Disconnect the F58 deceleration sensor connector.

    3. Measure the resistance according to the value(s) in the table below.

      Standard Resistance (Check for Open) (for RHD)
      Tester Connection Condition Specified Condition
      A55-4 (GL1) - F58-1 (GL1) Always Below 1 Ω
      A55-7 (GGND) - F58-2 (GGND) Always Below 1 Ω
      A55-28 (VGS) - F58-3 (VGS) Always Below 1 Ω
      Standard Resistance (Check for Open) (for LHD)
      Tester Connection Condition Specified Condition
      A57-4 (GL1) - F58-1 (GL1) Always Below 1 Ω
      A57-7 (GGND) - F58-2 (GGND) Always Below 1 Ω
      A57-28 (VGS) - F58-3 (VGS) Always Below 1 Ω
      Standard Resistance (Check for Short) (for RHD)
      Tester Connection Condition Specified Condition
      A55-4 (GL1) - Body ground Always 10 kΩ or higher
      A55-7 (GGND) - Body ground Always 10 kΩ or higher
      A55-28 (VGS) - Body ground Always 10 kΩ or higher
      Standard Resistance (Check for Short) (for LHD)
      Tester Connection Condition Specified Condition
      A57-4 (GL1) - Body ground Always 10 kΩ or higher
      A57-7 (GGND) - Body ground Always 10 kΩ or higher
      A57-28 (VGS) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  4. INSPECT DECELERATION SENSOR


    1. A005GTDE01
      Text in Illustration
      *a Forward
      *b Backward

      Remove the deceleration sensor.

    2. Connect 3 dry cell batteries of 1.5 V in series.

    3. Connect the VGS terminal to the batteries' positive (+) terminal and the GGND terminal to the batteries' negative (-) terminal.

    4. Apply about 4.5 V between the VGS and GGND terminals.

      Note

      Do not apply voltage of 6 V or more to terminals VGS and GGND.

    5. Check the output voltage of the GL1 terminal when the sensor is tilted forward and backward.

      Standard Voltage
      Tester Connection Sensor Condition Specified Condition
      1 (GL1) - Batteries' negative (-) terminal Horizontal About 2.5 V
      Lean forward 0.5 to 2.5 V
      Lean backward 2.5 to 4.5 V

      Tech Tips


      • If the sensor is tilted too much it may show the wrong value.

      • If dropped, the sensor should be replaced with a new one.

      • Check and ensure the correct installation direction of the deceleration sensor.


    NG

    REPLACE DECELERATION SENSOR Click here

    OK

  5. CHECK DTC OUTPUT


    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
      P1585 is output A
      P1585 is not output B

      Tech Tips

      If any other codes besides DTC P1585 are output, perform troubleshooting for those DTCs first.


    A

    REPLACE BRAKE ACTUATOR ASSEMBLY (SKID CONTROL ECU) Click here

    B

    CHECK FOR INTERMITTENT PROBLEMS (SYMPTOM SIMULATION) Click here

  6. REPLACE DECELERATION SENSOR


    1. Replace the deceleration sensor Click here.


    NEXT

  7. PERFORM INITIALIZATION

    Note


    • Performing reset memory will clear the learned values of both the yaw rate sensor (deceleration sensor 0 point calibration) and CVT oil pressure (CVT oil pressure calibration). Make sure to perform reset memory, yaw rate sensor 0 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

      • Skid control computer (w/o VSC)

      • Oil pressure sensor

      • Deceleration sensor (w/o VSC)

      • Airbag sensor assembly (Yaw rate sensor) (w/ VSC)

    • After performing reset memory, always perform yaw rate sensor (deceleration sensor 0 point) calibration first, and then CVT oil pressure calibration.

    • Always perform 0 point calibration with the vehicle on level ground.

    • Do not shake or vibrate the vehicle during 0 point calibration.


    1. Using the intelligent tester, perform reset memory, deceleration sensor 0 point calibration and CVT oil pressure calibration Click here.

    2. Check that no DTC is stored.


    NEXT

    END

  8. REPLACE AIR BAG SENSOR ASSEMBLY (YAW RATE SENSOR)

    Replace the air bag sensor assembly (yaw rate sensor) Click here.


    NEXT

  9. PERFORM INITIALIZATION

    Note


    • Performing reset memory will clear the learned values of both the yaw rate sensor (deceleration sensor 0 point calibration) and CVT oil pressure (CVT oil pressure calibration). Make sure to perform reset memory, yaw rate sensor 0 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

      • Skid control computer (w/o VSC)

      • Oil pressure sensor

      • Deceleration sensor (w/o VSC)

      • Airbag sensor assembly (Yaw rate sensor) (w/ VSC)

    • After performing reset memory, always perform yaw rate sensor (deceleration sensor 0 point) calibration first, and then CVT oil pressure calibration.

    • Always perform 0 point calibration with the vehicle on level ground.

    • Do not shake or vibrate the vehicle during 0 point calibration.


    1. Using the intelligent tester, perform reset memory, deceleration sensor 0 point calibration and CVT oil pressure calibration Click here.

    2. Check that no DTC is stored.


    NEXT

    END