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Home >> Toyota >> 2012 >> FJ Cruiser 4WD, Automatic T/Case Control >> Repair and Diagnosis >> Brakes >> Traction Control >> Vehicle Stability Control System (Diagnostics - Introduction) >> Vehicle Stability Control System >> Freeze Frame Data >> Freeze Frame Data

Freeze Frame Data

  1. HINT: 
    • Whenever a DTC is detected or the ABS operates, the skid control ECU stores the current vehicle (sensor) state as freeze frame data.
    • 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. However, if the vehicle was stopped or at low speed (4.3 mph (7 km/h) or less), or if a DTC is detected, the skid control ECU will not count the number after that.
    • Freeze frame data at the time the ABS operates: The skid control ECU stores and updates the data whenever the ABS system operates. When the ECU stores data at the time a DTC is detected, the data stored when the ABS operated is erased.
    • 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.
    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 times ignition switch turned to ON after storing freeze frame data/ 0 to 31 - -
    Buzzer Skid control buzzer/ ON or OFF ON: Buzzer on
    OFF: Buzzer off    		 -
    Stop Light SW Stop light switch/ ON or OFF ON: Brake pedal depressed
    OFF: Brake pedal released    		 -
    Parking Brake SW Parking brake switch/ ON or OFF ON: Parking brake applied
    OFF: Parking brake released    		 -
    Reservoir Warning SW Brake fluid level warning switch/ ON or OFF OFF -
    Gear Position Gear position information/ P/N, R, 1st-8th, Fail or Not R Actual gear position -
    Shift Lever Position Shift lever position information/ P/N, R, D/M, 1st-6th/B or Fail Actual shift lever position -
    Operated System Operated system status/ ABS, VSC, TRAC, BA, HAB, Fail, Sys or Non - ABS: ABS is activated.
    VSC: VSC is activated.
    TRAC: TRAC is activated.
    BA: BA is activated.
    HAB: HAB is activated.
    Fail: Fail safe mode is activated.
    Sys: System prohibit is activated.
    Non: No operation is activated.
    Master Cylinder Sensor Master cylinder pressure sensor reading/ Min.: 0.00 V, Max.: 5.00 V When brake pedal released: 0.3 to 0.9 V The value increases when the brake pedal is depressed.
    M/C Sensor Grade Master cylinder pressure sensor change/ Min.: -30 MPa/s, Max.: 225 MPa/s When brake pedal released or pedal held at constant position: 0 MPa/s Changes in proportion with the pedal movement speed when the brake pedal is being operated.
    Yaw Rate Sensor Yaw rate and deceleration sensor/ Min.: -128°/s, Max.: 127°/s Vehicle stopped: 0°/s
    Turning right: -128 to 0°/s
    Turning left: 0 to 127°/s    		 -
    Lateral G Lateral G/ Min.: -25.10 m/s2 , Max.: 24.90 m/s2 - Changes in proportion with the pedal movement speed when the brake pedal is being operated.
    Forward and Rearward G Forward and backward G/ Min.: - 25.10 m/s2 , Max.: 24.90 m/s2 - Changes in proportion with acceleration during acceleration/deceleration.
    FR Wheel Speed Front wheel speed sensor RH reading/ Min.: 0 km/h (0 mph), Max.: 326 km/h (202 mph) Vehicle stopped: 0 km/h (0 mph) No large fluctuations when driving at a constant speed.
    FL Wheel Speed Front wheel speed sensor LH reading/ Min.: 0 km/h (0 mph), Max.: 326 km/h (202 mph) Vehicle stopped: 0 km/h (0 mph) No large fluctuations when driving at a constant speed.
    RR Wheel Speed Rear wheel speed sensor RH reading/ Min.: 0 km/h (0 mph), Max.: 326 km/h (202 mph) Vehicle stopped: 0 km/h (0 mph) No large fluctuations when driving at a constant speed.
    RL Wheel Speed Rear wheel speed sensor LH reading/ Min.: 0 km/h (0 mph), Max.: 326 km/h (202 mph) Vehicle stopped: 0 km/h (0 mph) No large fluctuations when driving at a constant speed.
    Vehicle Speed Maximum wheel speed sensor reading/ Min.: 0 km/h (0 mph), Max.: 326 km/h (202 mph) Vehicle stopped: 0 km/h (0 mph) No large fluctuations when driving at a constant speed.
    Vehicle Speed Grade Vehicle acceleration/ Min.: -25.10 m/s2 , Max.: 24.90 m/s2 Vehicle stopped: 0 m/s2 Changes in proportion with the vehicle acceleration/deceleration during driving.
    FR Wheel Direction Front wheel RH direction signal/ Forward or Back Forward: Forward
    Back: Backward    		 -
    FL Wheel Direction Front wheel LH direction signal/ Forward or Back Forward: Forward
    Back: Backward    		 -
    RR Wheel Direction Rear wheel RH direction signal/ Forward or Back Forward: Forward
    Back: Backward    		 -
    RL Wheel Direction Rear wheel LH direction signal/ Forward or Back Forward: Forward
    Back: Backward    		 -
    Real Engine Torque Actual engine torque/ Min.: -1024.0 Nm, Max.: 1023.0 Nm - -
    Accelerator Opening Angle % Throttle valve opening amount/ Min.: 0.0%, Max.: 128.0% When accelerator pedal released: 0% Changes in proportion with the movement of the pedal during accelerator pedal operation.
    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: VSC off mode    		 -
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