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 ECU assembly (yaw rate and acceleration sensor). If a malfunction of the airbag ECU 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 ECU 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

After the ignition switch is turned ON, the brake actuator assembly (skid control ECU) has detected one of the following conditions, and the ECM has received a diagnostic signal from the brake actuator assembly (skid control ECU) for 3 seconds or more (1 trip detection logic).


  • Output value of the airbag ECU assembly (yaw rate and acceleration sensor) remains below -1.5 G or more than 1.5 G for at least 1.2 seconds or more.

  • Airbag ECU assembly (yaw rate and acceleration sensor) power source voltage is 4.4 V or less, or 5.6 V or higher, for at least 1.2 seconds or more.

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

  • Vehicle is stationary, and the difference between GL1 and GL2 does not decrease below 0.4 G within 60 seconds after it has exceeded 0.6 G.

  • Malfunction signal of the airbag ECU assembly (yaw rate and acceleration sensor) power source voltage has occurred for 10 seconds or more while the vehicle is driven at 3 km/h (1.8 mph) or more.

  • Airbag ECU assembly (Yaw rate and acceleration sensor)

  • Brake actuator assembly (Skid control ECU)

  • CAN communication system

 Does not come on DTC stored

WIRING DIAGRAM

B00471JE80
*1 Brake Actuator Assembly (Skid Control ECU)
*2 to CAN Communication System
*3 Airbag ECU Assembly (Yaw Rate and Acceleration Sensor)
*4 CAN Communication Line

CAUTION / NOTICE / HINT

Note


  • Perform initialization after replacing any parts related to the continuously variable transaxle system.

    Click here


  • Check that no DTCs are stored after performing initialization.

    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.

      Result
      Result Proceed to
      DTC U0129 is not output A
      DTC U0129 is output (w/o Toyota Safety Sense) B
      DTC U0129 is output (w/ Toyota Safety Sense) C

    B

    GO TO CAN COMMUNICATION SYSTEM Click here

    C

    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.

      Engine and ECT
      Tester Display Measurement Item Range Normal Condition Diagnostic Note
      G Sensor Converted output voltage of G sensor

      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

      		 -
      Result
      Result Proceed to
      Data List value is not normal A
      Data List value is normal (for TMMF made LHD) B
      Data List value is normal (for TMMF made RHD) C

    B

    REPLACE BRAKE ACTUATOR ASSEMBLY (SKID CONTROL ECU) Click here

    C

    REPLACE BRAKE ACTUATOR ASSEMBLY (SKID CONTROL ECU) Click here

    A

  3. REPLACE AIRBAG ECU ASSEMBLY


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

      Click here

      Result
      Proceed to
      NEXT

    NEXT

  4. PERFORM INITIALIZATION

    Click here

    Result
    Proceed to
    NEXT

    NEXT

    END