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 sensor assembly (yaw rate and acceleration sensor). If a malfunction in the airbag sensor assembly (yaw rate and acceleration sensor) is determined based on a malfunction signal from the skid control ECU (brake actuator assembly), the ECM stores this DTC.

Tech Tips


  • The airbag sensor assembly (yaw rate and acceleration sensor) signal is sent to the skid control ECU (brake actuator assembly) 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 skid control ECU (brake actuator assembly) has detected one of the following conditions, and the ECM has received a diagnostic signal from the skid control ECU (brake actuator assembly) for 3 seconds or more (1 trip detection logic).


  • 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.

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

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

  • 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.

  • 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.

  • Airbag sensor assembly (Yaw rate and acceleration sensor)

  • Brake actuator assembly (Skid control ECU)

  • CAN communication system

 Does not come on DTC stored
DTC Detection Condition Patterns:
Vehicle Condition
Pattern 1 Pattern 2 Pattern 3 Pattern 4 Pattern 5
Diagnostic Condition The ignition switch is ON. ○ ○ ○ ○ ○
Malfunction Condition The output value of the airbag sensor assembly (yaw rate and acceleration sensor) remains below -1.5 G or less, or 1.5 G or more for at least 1.2 seconds or more. ○ - - - -
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. - ○ - - -
No signal from the airbag sensor assembly (yaw rate and acceleration sensor) is detected 7 times or more. - - ○ - -
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. - - - ○ -
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. - - - - ○
Duration 3 seconds or more 3 seconds or more 3 seconds or more 3 seconds or more 3 seconds or more
Detection Logic 1 trip detection logic 1 trip detection logic 1 trip detection logic 1 trip detection logic 1 trip detection logic

Tech Tips

This DTC is output when any one of the above detection patterns is met.

WIRING DIAGRAM

B008L29E73
*a Skid Control ECU (Brake Actuator Assembly)
*b to CAN Communication System
*c Airbag ECU Assembly (Yaw Rate and Acceleration Sensor)
*d 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

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 Shift Test inspection 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.


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

    5. In accordance with 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

      Min.: 0 V

      Max.: 79.998 V

      Displays converted voltage of yaw rate and acceleration sensor


      • 2.31 V to 2.69 V: Vehicle on level ground

      • 1.88 V to 2.5 V: Decelerating

      • 2.5 V to 3.11 V: Accelerating

      • Set to 1.87 V: G sensor malfunction

      • Set to 1.87 V: Communication malfunction

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