CONTINUOUSLY VARIABLE TRANSAXLE SYSTEM, Diagnostic DTC:P1586

DTC Code DTC Name
P1586 Acceleration Sensor Malfunction

DESCRIPTION

The ECM determines the vehicle inclination based on a signal from the yaw rate and acceleration sensor (airbag sensor assembly)*1 or deceleration sensor*2.

DTC No. Detection Item DTC Detection Condition Trouble Area MIL Memory
P1586 Acceleration Sensor Malfunction

1. Diagnosis Condition 2. Malfunction Status 3. Malfunction Time 4. Other


  1. The ignition switch is ON.

  2. With the vehicle speed at 30 km/h (18 mph) or more, the difference between the longitudinal acceleration calculated based on the G sensor value and the longitudinal acceleration calculated based on the vehicle speed exceeds 0.35 G for 60 seconds or more.

  3. 3.0 seconds

  4. 1 trip detection logic


  1. The ignition switch is ON.

  2. No change detected in the yaw rate and acceleration sensor*1 or deceleration sensor*2 signal 16 times or more while the vehicle speed decreases from 30 km/h (18 mph) to 0 km/h (0 mph).

  3. 3.0 seconds

  4. 1 trip detection logic

  • Yaw rate and acceleration sensor (Airbag sensor assembly)*1

  • Deceleration sensor*2

  • Skid control ECU (Brake actuator assembly)

  • CAN communication system

 - DTC stored

*1: w/ VSC

*2: w/o VSC

WIRING DIAGRAM

Refer to DTC P1585.

Click here

CAUTION / NOTICE / HINT

Note


  • Perform initialization when parts related to the continuously variable transaxle are replaced.

    Click here

  • Check that no DTCs are stored after performing initialization.

    Click here

Tech Tips

If a CAN communication DTC is output, perform troubleshooting for that DTC first.

PROCEDURE


  1. CHECK DTC OUTPUT (CAN COMMUNICATION SYSTEM)


    1. Check for DTCs of the CAN communication system.


      Result
      Proceed to
      DTCs are not output
      DTCs are output

    DTCs are output

    GO TO CAN COMMUNICATION SYSTEM (DIAGNOSIS SYSTEM) for LHD: Click here for RHD: Click here

    DTCs are not output

  2. CHECK DTC OUTPUT (IN ADDITION TO DTC P1586)


    1. Clear the DTCs.

      Click here

      Tech Tips

      Write down the currently output DTCs before clearing them.


      Powertrain > Engine and ECT > Clear DTCs

    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 GTS to the DLC3.

    4. Turn the ignition switch to ON.

    5. Turn the GTS on.

    6. Enter the following menus: Powertrain / Engine and ECT / Trouble Codes.


      Powertrain > Engine and ECT > Trouble Codes

    7. Read the DTCs using the GTS.

      Result
      Proceed to
      Only P1586 is output
      P1586 and other DTCs are output

      Tech Tips

      If any other DTCs besides DTC P1586 are output, perform troubleshooting for those DTCs first.


    P1586 and other DTCs are output

    GO TO DTC CHART Click here

    Only P1586 is output

  3. 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.


      Powertrain > Engine and ECT > Data List
      Tester Display
      G Sensor

      Powertrain > Engine and ECT > Data List
      Tester Display Measurement Item Range Normal Condition Diagnostic Note
      G Sensor Converted output voltage of deceleration sensor

      min.: 0 V

      max.: 79.998 V

      Displays converted voltage of deceleration sensor


      • Vehicle on level ground: 2.31 V to 2.69 V

      • Decelerating: 1.88 V to 2.5 V

      • Accelerating: 2.5 V to 3.11 V

      • G sensor malfunction: Set to 1.87 V

      • Communication malfunction: Set to 1.87 V

      		 -

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

      Result
      Result Proceed to
      Data displayed is as specified under Normal Condition (w/ VSC) A
      Data displayed is as specified under Normal Condition (w/o VSC) B
      Data displayed is not as specified under Normal Condition (w/ VSC) C
      Data displayed is not as specified under Normal Condition (w/o VSC) D

    A

    REPLACE SKID CONTROL ECU (BRAKE ACTUATOR ASSEMBLY) Click here

    C

    REPLACE YAW RATE AND ACCELERATION SENSOR (AIRBAG SENSOR ASSEMBLY) Click here

    D

    REPLACE DECELERATION SENSOR Click here

    B

  4. REPLACE SKID CONTROL ECU (BRAKE ACTUATOR ASSEMBLY)


    1. Replace the skid control ECU (brake actuator assembly).

      Click here

      Result
      Proceed to
      NEXT

    NEXT

    PERFORM INITIALIZATION Click here

  5. REPLACE YAW RATE AND ACCELERATION SENSOR (AIRBAG SENSOR ASSEMBLY)


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

      Click here

      Result
      Proceed to
      NEXT

    NEXT

    PERFORM INITIALIZATION Click here

  6. REPLACE DECELERATION SENSOR


    1. Replace the deceleration sensor.

      Click here

      Result
      Proceed to
      NEXT

    NEXT

    PERFORM INITIALIZATION Click here