Vehicle Stability Control System Freeze Frame Data

Brake. Corolla. Zre142 Aze141
Brake Control Dynamic Control Systems. Corolla. Zre142 Aze141

  1. FREEZE FRAME DATA

  1. CHECK FREEZE FRAME DATA

  1. CLEAR FREEZE FRAME DATA

Vehicle Stability Control System -- Freeze Frame Data



FREEZE FRAME DATA

  1. Whenever an ABS DTC is detected, the skid control ECU stores the current vehicle (sensor) state as Freeze Frame Data.

  2. The skid control ECU 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. If the vehicle is stopped, at a low speed (7 km/h (4.3 mph) or less), or if a DTC is detected, the skid control ECU will stop counting the number of times the ignition switch has been turned from off to ON.
    2. Freeze Frame Data at the time the ABS operates:
      The skid control ECU 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 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. Enter the following menus: Chassis / ABS/VSC/TRAC / Trouble Codes.

  5. According to the Techstream display, select the trouble code data display with Freeze Frame Data.

    ABS/VSC/TRAC
    Tester Display
    		Measurement Item
    		Reference Value
    Elapsed Time after Freeze Trigger
    		Elapsed time after freeze frame 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
    Buzzer
    		Skid control buzzer signal
    		Skid control buzzer ON: ON, OFF: OFF
    Stop Light SW
    		Stop light switch signal
    		Stop light switch ON: ON, OFF: OFF
    Parking Brake SW
    		Parking brake switch signal
    		Parking brake switch ON: ON, OFF: OFF
    Gear Position
    		Gear position information
    		Fail
    P,N
    R
    Not R
    1st
    2nd
    3rd
    4th
    5th
    6th
    7th
    8th
    Shift Lever Position
    		Shift lever position information
    		Fail
    P,N
    R
    D/M
    1st
    2nd
    3rd
    4th
    5th
    6th/B
    Operated System
    		Operated system status
    		ABS: ABS activated
    VSC: VSC activated
    TRAC: TR(A)C activated
    BA: BA activated
    HAB: HAB activated
    PBA: PBA activated
    PB: PB activated
    HA-CTRL: Hill-start assist control activated
    Fail: Fail safe mode activated
    Sys: System prohibit activated
    Non: No operation activated
    Master Cylinder Sensor
    		Master cylinder pressure sensor reading
    		Brake pedal released: 0.3 to 0.9 V
    Brake pedal depressed: 0.8 to 4.5 V
    M/C Sensor Grade
    		Master cylinder pressure sensor change
    		Min.: -30 Mpa/s, Max.: 225 Mpa/s
    Yaw Rate Sensor
    		Yaw rate sensor reading
    		Min.: -128 °/s, Max.: 127 °/s
    Lateral G
    		Lateral G
    		Min.: -25.10 m/s2, Max.: 24.90 m/s2
    Forward and Rearward G
    		Forward and backward G
    		Min.: -25.10 m/s2, Max.: 24.90 m/s2
    FR Wheel Speed
    		FR wheel speed
    		Min.: 0 km/h (0 mph), Max.: 326 km/h (202 mph)
    FL Wheel Speed
    		FL wheel speed
    		Min.: 0 km/h (0 mph), Max.: 326 km/h (202 mph)
    RR Wheel Speed
    		RR wheel speed
    		Min.: 0 km/h (0 mph), Max.: 326 km/h (202 mph)
    RL Wheel Speed
    		RL wheel speed
    		Min.: 0 km/h (0 mph), Max.: 326 km/h (202 mph)
    Vehicle Speed
    		Vehicle speed reading
    		Min.: 0 km/h (0 mph), Max.: 326 km/h (202 mph)
    Vehicle Speed Grade
    		Vehicle speed grade
    		Min.: -25.10 m/s2, Max.: 24.90 m/s2
    Real Engine Torque
    		Real engine torque
    		Min.: -1024 Nm, Max.: 1023 Nm
    Accelerator Opening Angle %
    		Accelerator opening angle %
    		Min.: 0%, Max.: 128%
    IG1 Voltage Value
    		IG1 voltage value
    		Min.: 0 V, Max.: 20 V
    Inspection Mode
    		Inspection mode
    		Other: Normal mode
    Inspect: Inspection mode
    Steering Angle Sensor
    		Steering angle sensor reading
    		Left turn: Increase
    Right turn: Decrease
    TRAC/VSC Off Mode
    		TR(A)C/VSC off mode
    		Normal: Normal mode
    TRC OFF: TR(A)C off mode
    VSC OFF: VSC off mode


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

  1. Connect the Techstream to the DLC3.

  2. Turn the ignition switch to ON.

  3. Clear the DTCs and Freeze Frame Data (COROLLA_ZRE142 RM000000XHV0F2X.html).