CONTINUOUSLY VARIABLE TRANSAXLE SYSTEM(for 1ZR-FAE), 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 of the airbag sensor assembly (yaw rate and acceleration sensor) is determined based on a malfunction signal from the brake actuator assembly (skid control ECU), the ECM stores a DTC.

Tech Tips


  • The airbag sensor assembly (yaw rate and acceleration sensor) signal is sent to the brake actuator assembly (skid control ECU) via CAN communication.

  • 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 2. Malfunction Status 3. Malfunction Time 4. Other


    DTC Detection Condition 1

  1. The ignition switch is ON.

  2. The output value of the airbag sensor assembly (yaw rate and acceleration 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


    DTC Detection Condition 2

  1. The ignition switch is ON.

  2. The airbag sensor assembly (yaw rate and acceleration sensor) power source voltage is at 4.4 V or less, or 5.6 V or higher for 1.2 seconds or more.

  3. 0.5 seconds or more

  4. 1-trip detection logic


    DTC Detection Condition 3

  1. The ignition switch is ON.

  2. No signal from the airbag sensor assembly (yaw rate and acceleration sensor) is detected 7 times or more.

  3. 0.5 seconds or more

  4. 1-trip detection logic


    DTC Detection Condition 4

  1. The ignition switch is 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


    DTC Detection Condition 5

  1. The ignition switch is ON.

  2. An airbag sensor assembly (yaw rate and acceleration 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

  • 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

A01TAESE43
*1 Brake Actuator Assembly (Skid Control ECU)
*2 to CAN Communication System
*3 Airbag sensor Assembly (Yaw Rate and Acceleration Sensor)
*4 CAN Communication Line

CAUTION / NOTICE / HINT

Tech Tips

After performing repair, clear the DTCs and perform the following procedure to check that DTCs are not output.


  1. Turn the ignition switch to ON and wait for 60 seconds or more.

  2. Perform the D position test in Road Test.

    Click here

  3. Check for DTCs again.

    Click here

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.


      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 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.

    5. According to 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 assembly

      Min.: 0 V

      Max.: 79.998 V

      • 2.31 to 2.69 V: Vehicle on level ground

      • 1.88 to 2.5 V: Decelerating

      • 2.5 to 3.11 V: Accelerating

      • Stuck at 1.87 V: G sensor malfunction

      • Stuck at 1.87 V: Communication malfunction

      		 -

      Powertrain > Engine and ECT > Data List
      Tester Display
      G Sensor
      Result
      Result Proceed to
      Data List value is not normal A
      Data List value is normal B

    B

    REPLACE BRAKE ACTUATOR ASSEMBLY Click here

    A

  3. REPLACE AIRBAG SENSOR ASSEMBLY


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

      Click here

      Result
      Proceed to
      NEXT

    NEXT

    PERFORM INITIALIZATION Click here