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 to perform neutral control. If a malfunction is determined in the deceleration 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 deceleration sensor signal from the brake actuator assembly via CAN communication.

  • 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. Deceleration sensor terminal GL1 voltage of 0.3 V or less or 4.5 V or more.

  3. 3 seconds

  4. 1-trip detection logic

  • Wire harness or connector

  • Deceleration sensor

  • Brake actuator assembly

    (Skid control ECU)

  • CAN communication system

WIRING DIAGRAM

A005L11E01
*a DECELERATION SENSOR
*b SKID CONTROL ECU
*c CAN communication line

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 (HOW TO PROCEED WITH TROUBLESHOOTING) 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

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

    B

    CHECK DTC OUTPUT Click here

    A

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


    1. Disconnect the A55 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)
      Tester Connection Condition Specified Condition
      A55-3 (GL1) - F58-1 (GL1) Always Below 1 Ω
      A55-15 (GGND) - F58-2 (GGND) Always Below 1 Ω
      A55-26 (VGS) - F58-3 (VGS) Always Below 1 Ω
      Standard Resistance (Check for Short)
      Tester Connection Condition Specified Condition
      A55-4 (GL1) or F58-1 (GL1) - Body ground Always 10 kΩ or higher
      A55-15 (GGND) or F58-2 (GGND) - Body ground Always 10 kΩ or higher
      A55-26 (VGS) or F58-3 (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
      1 (GL1) - Batteries' negative (-) terminal Lean forward 0.5 to 2.5 V
      1 (GL1) - Batteries' negative (-) terminal 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

      • Oil pressure sensor

      • Deceleration sensor

    • 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