Vehicle Stability Control System (For Hatchback With Built-In Type Yaw Rate Sensor) Freeze Frame Data

Brake. Yaris. Ncp93, 131
Brake Control Dynamic Control Systems. Yaris. Ncp93, 131

  1. FREEZE FRAME DATA

  1. CHECK FREEZE FRAME DATA

  1. CLEAR FREEZE FRAME DATA

Vehicle Stability Control System (For Hatchback With Built-In Type Yaw Rate Sensor) -- Freeze Frame Data



FREEZE FRAME DATA

  1. Whenever a DTC is detected, the skid control ECU (brake actuator assembly) stores the current vehicle (sensor) state as Freeze Frame Data.

  2. The skid control ECU (brake actuator assembly) stores the number of times (maximum: 31) the ignition switch has been turned from off to ON since the last time the ABS was activated.

    HINT:
    1. However, if the vehicle is stopped or at a low speed (7 km/h (4.3 mph) or less), or if a DTC is detected, the skid control ECU (brake actuator assembly) will stop counting the number.
    2. Freeze Frame Data at the time the ABS operates:
      The skid control ECU (brake actuator assembly) stores and updates data whenever the ABS system operates.
      When the ECU stores data at the time a DTC is detected, the data stored during ABS operation is cleared.
    3. Freeze Frame Data at the time a DTC is detected:
      When the skid control ECU (brake actuator assembly) stores data at the time a DTC is detected, no updates will be performed until the data is cleared.

CHECK FREEZE FRAME DATA

  1. Connect the Techstream to the DLC3.

  2. Turn the ignition switch to ON.

  3. Turn the Techstream on.

  4. Check the freeze frame data by following the prompts on the Techstream display.

    ABS/VSC/TRAC
    Tester Display
    		Measurement Item/Range
    		Normal Condition
    		Diagnostic Note
    Elapsed Time after Freeze Trigger
    		Elapsed time after freeze trigger/Min.: 0 msec, Max.: 500 msec
    		-
    		-
    Number of IG ON
    		Number of operations of ignition switch being turned to ON after storing Freeze Frame Data/0 to 31
    		-
    		-
    Stop Light SW
    		Stop light switch/OFF or ON
    		OFF: Brake pedal released
    ON: Brake pedal depressed
    		-
    Parking Brake SW
    		Parking brake switch/OFF or ON
    		OFF: Parking brake released
    ON: Parking brake applied
    		-
    Gear Position
    		Gear position information /Fail, 1st-7th, "P, N", 8th, R, Not R
    		Actual gear position
    		-
    Shift Lever Position
    		Shift lever position information/Fail, 1st-5th, 6th/B, D/M, "P, N", R
    		Actual shift lever position
    		-
    Operated System
    		Operated system status/Non, ABS, VSC, TRAC, BA, HAB, Fail, PBA, PB, HA-CTRL, Sys
    		Non: No operation activated
    ABS: ABS activated
    VSC: VSC activated
    TRAC: TRAC activated
    BA: BA activated
    Fail: Fail safe mode activated
    Sys: System prohibit activated
    		-
    Master Cylinder Sensor
    		Master cylinder pressure sensor reading/Min.: 0 V, Max.: 5 V
    		0.3 to 0.9 V: When brake pedal is released
    		Reading increases when brake pedal is depressed.
    M/C Sensor Grade
    		Master cylinder pressure sensor change/Min.: -30 MPa/s, Max.: 225 MPa/s
    		0 MPa/s: When brake pedal is released or pedal held at constant position
    		When brake pedal is being operated: Changes in proportion with pedal movement speed
    Yaw Rate Sensor
    		Yaw rate sensor/Min.: -128°/s, Max.: 127°/s
    		0°/s: Vehicle stopped
    -128 to 0°/s: Turning right
    0 to 127°/s: Turning left
    		-
    Lateral G
    		Lateral G/Min.: -25.10 m/s2, Max.: 24.90 m/s2
    		-
    		During turning: Changes in proportion with acceleration
    Forward and Rearward G
    		Forward and backward G/Min.: -25.10 m/s2, Max.: 24.90 m/s2
    		-
    		During acceleration/deceleration:
    Changes in proportion with acceleration
    FR Wheel Speed
    		FR wheel speed sensor reading/Min.: 0 km/h (0 mph), Max.: 326 km/h (202 mph)
    		0 km/h: Vehicle stopped
    		When driving at constant speed:
    No large fluctuations
    FL Wheel Speed
    		FL wheel speed sensor reading/Min.: 0 km/h (0 mph), Max.: 326 km/h (202 mph)
    		0 km/h: Vehicle stopped
    		When driving at constant speed:
    No large fluctuations
    RR Wheel Speed
    		RR wheel speed sensor reading/Min.: 0 km/h (0 mph), Max.: 326 km/h (202 mph)
    		0 km/h: Vehicle stopped
    		When driving at constant speed:
    No large fluctuations
    RL Wheel Speed
    		RL wheel speed sensor reading/Min.: 0 km/h (0 mph), Max.: 326 km/h (202 mph)
    		0 km/h: Vehicle stopped
    		When driving at constant speed:
    No large fluctuations
    Vehicle Speed
    		Maximum wheel speed sensor reading/Min.: 0 km/h (0 mph), Max.: 326 km/h (202 mph)
    		Actual vehicle speed
    		Speed indicated on speedometer
    Vehicle Speed Grade
    		Vehicle speed grade/Min.: -25.10 m/s2, Max.: 24.90 m/s2
    		0 m/s2: Vehicle stopped
    		During driving: Changes in proportion with vehicle acceleration/deceleration
    Real Engine Torque
    		Real engine torque/Min.: -1024 Nm, Max.: 1023 Nm
    		-
    		-
    Accelerator Opening Angle %
    		The difference of a present accelerator/Min.: 0%, Max.: 128%
    		0%: When the accelerator pedal is released
    		During accelerator pedal operation: Changes in proportion with the pedal movement
    IG1 Voltage Value
    		IG1 voltage value / Min.: 0 V, Max.: 20 V
    		-
    		Changes in proportion to auxiliary battery voltage
    Inspection Mode
    		Inspection mode/Other or Inspect
    		Other: Normal mode
    Inspect: Inspection mode
    		-
    Steering Angle Sensor
    		Steering angle sensor/Min.: -3276.8°, Max.: 3276.7°
    		Left turn: Increase
    Right turn: Decrease
    		-
    TRAC/VSC Off Mode
    		TRAC/VSC off mode/Normal, TRC OFF or VSC OFF
    		Normal: Normal mode
    TRC OFF: TRAC OFF mode
    VSC OFF: TRAC, VSC OFF mode
    		-


CLEAR FREEZE FRAME DATA
NOTICE:
Clearing the DTC will also clear the Freeze Frame Data.

  1. Connect the Techstream to the DLC3.

  2. Turn the ignition switch to ON.

  3. Clear the DTC and Freeze Frame Data (YARIS_NCP93 RM000000XHV0CQX.html).