DTC    P1585    Acceleration Sensor Circuit

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DESCRIPTION

The ECM determines the vehicle inclination based on a signal from the yaw rate and acceleration sensor to perform neutral control. If a malfunction is determined in the yaw rate and acceleration sensor based on a malfunction signal from the brake actuator assembly, the ECM cancels neutral control as a fail-safe function.

HINT:
  1. The ECM receives a yaw rate and acceleration sensor signal from the brake actuator assembly via CAN communication.
  2. If a CAN communication DTC is output, perform troubleshooting for that DTC 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. Output value of the yaw rate and acceleration sensor (G sensor) remains at -1.5 G or less or 1.5 G or more for at least 1.2 seconds.
  3. 3.0 seconds
  4. 1-trip detection logic
  1. Yaw rate and acceleration sensor
  2. Brake actuator assembly
    (Skid control ECU)
  3. CAN communication system
  1. Ignition switch ON
  2. Battery voltage to the yaw rate and acceleration sensor (G sensor) remains at 4.4 V or less or 5.6 V or more for at least 1.2 seconds.
  3. 3.0 seconds
  4. 1-trip detection logic
  1. Ignition switch ON
  2. No signal from the yaw rate and acceleration sensor (G sensor) is repeated 7 times or more.
  3. 3.0 seconds
  4. 1-trip detection logic
  1. Ignition switch 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. 3.0 seconds
  4. 1-trip detection logic
  1. Ignition switch ON
  2. A yaw rate and acceleration sensor (G sensor) power source voltage malfunction signal is received for at least 10 seconds with the vehicle speed 3 km/h (1.8 mph) or more.
  3. 3.0 seconds
  4. 1-trip detection logic

WIRING DIAGRAM


C194819E02


INSPECTION 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 (Click here)
A


2.READ VALUE USING INTELLIGENT TESTER (G SENSOR)

  1. Connect the intelligent tester to the DLC3.

  1. Turn the ignition switch to ON.

  1. Turn the tester on.

  1. Enter the following menus: Powertrain / Engine and ECT / Data List.

  1. 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 yaw rate and acceleration sensor/
    min.: 0 V
    max.: 5 V
    		Displays converted voltage of yaw rate and acceleration sensor
    1. Vehicle on level ground: 2.31 V to 2.69 V
    2. Decelerating: 1.88 V to (2.5) V
    3. Accelerating: (2.5) V to 3.11 V
    4. G sensor malfunction: set to 1.87 V
    5. Communication malfunction: set to 1.87 V
    		-
    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 YAW RATE AND ACCELERATION SENSOR

  1. Replace yaw rate and acceleration sensor (Click here).


NEXT


4.PERFORM INITIALIZATION

NOTICE:
  1. Performing reset memory/initialization will clear the learned values of both the yaw rate and acceleration sensor (deceleration sensor 0 point calibration) and the CVT oil pressure (CVT oil pressure calibration). Make sure to perform reset memory, yaw rate and acceleration sensor 0 point calibration, and CVT oil pressure calibration when replacing any of the parts shown in the following table:
    Replaced Part
    1. Continuously variable transaxle assembly
    2. ECM
    3. Oil pressure sensor
    4. Yaw rate and acceleration sensor
  2. After reset memory, always perform yaw rate and acceleration sensor (deceleration sensor 0 point) calibration first, and then the CVT oil pressure calibration.
  3. Always perform the 0 point calibration with the vehicle on level ground.
  4. Do not shake or vibrate the vehicle during the 0 point calibration.

  1. Using the intelligent tester, perform the reset memory, deceleration sensor 0 point calibration and CVT oil pressure calibration (Click here).

  1. Check for DTCs again (Click here).


NEXT

END