ELECTRONICALLY CONTROLLED BRAKE SYSTEM FREEZE FRAME DATA


  1. FREEZE FRAME DATA/INFORMATION


    1. Whenever an ABS, VSC or electronically controlled brake system DTC is detected, the skid control ECU (brake booster with master cylinder assembly) stores the current vehicle (sensor) state as Freeze Frame Data.

    2. The skid control ECU (brake booster with master cylinder assembly) stores the number of times (maximum: 31) the power switch has been turned from off to on (IG) since the last time the ABS was activated.

    3. For DTCs stored in the skid control ECU (brake booster with master cylinder assembly), information (INF) codes that are contained in the Freeze Frame Data can be displayed on the GTS.

      Tech Tips


      • If the vehicle is stopped or driven at a low speed (7 km/h (4.3 mph) or less), or if a DTC is detected, the skid control ECU (brake booster with master cylinder assembly) will stop counting the number of times the power switch has been turned from off to on (IG).

      • Freeze Frame Data at the time the ABS operates:

        The skid control ECU (brake booster with master cylinder 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.

      • Freeze Frame Data at the time a DTC is detected:

        When the skid control ECU (brake booster with master cylinder assembly) stores data at the time a DTC is detected, no updates will be performed until the data is cleared.

  2. CHECK FREEZE FRAME DATA AND INFORMATION


    1. Connect the GTS to the DLC3.

    2. Turn the power switch on (IG).

    3. Turn the GTS on.

    4. Enter the following menus: Chassis / ABS/VSC/TRC / Trouble Codes.

    5. Read the Freeze Frame Data recorded when the DTC was set.

    6. Read the information.


      1. Select the item that has an information code (INF code) from the Freeze Frame Data screen.

        ABS/VSC/TRC
        Tester Display Measurement Item/Range Normal Condition Diagnostic Note
        Detailed Freeze DTC Detailed code for Freeze Frame DTC / Min.: 0, Max.: 65535 - Number of information code (INF code) output is displayed
        Elapsed Time after Freeze Trigger Elapsed time after freeze trigger / Min.: 0 msec, Max.: 500 msec - -
        Number of IG ON Number of times power switch turned on (IG) after Freeze Frame Data stored / 0 to 31 - -
        Elapsed Time Elapsed time after power switch turned on (IG) / Min.: 0 sec, Max.: 100661 sec - -
        Buzzer Meter buzzer / ON or OFF

        ON: Buzzer on

        OFF: Buzzer off

        		 -
        Stop Light SW Stop light switch assembly / ON or OFF

        ON: Brake pedal depressed

        OFF: Brake pedal released

        		 -
        Parking Brake SW Parking brake switch assembly / ON or OFF

        ON: Parking brake applied

        OFF: Parking brake released

        		 -
        Reservoir Warning SW Brake fluid level warning switch / ON or OFF

        ON: Reservoir level low

        OFF: Reservoir level normal

        		 -
        Shift Lever Position Shift position information / Fail, 1st-6th/B, D/M, P,N or R Actual shift position -
        Operated System Operated system status / ABS, VSC, TRC, BA, PB, PBA, HAB, HA-CTRL, TSC, Fail, Non or Sys -

        ABS: ABS activated

        VSC: VSC activated

        TRC: TRC activated

        BA: BA activated

        PB: PB activated

        PBA: PBA activated

        HAB: HAB activated

        HA-CTRL: Hill-start assist control activated

        TSC: TSC activated

        Fail: Fail safe mode activated

        Non: No system activated

        Sys: System prohibited
        Stroke Sensor Brake pedal stroke sensor assembly / Min.: 0.00 V, Max.: 5.00 V When brake pedal released: 0.65 to 1.35 V Reading increases when brake pedal is depressed
        Stroke Sensor2 Brake pedal stroke sensor assembly 2 / Min.: 0.00 V, Max.: 5.00 V When brake pedal released: 3.65 to 4.35 V Reading decreases when brake pedal is depressed
        Accumulator Sensor Accumulator pressure sensor / Min.: 0.00 V, Max.: 5.00 V Specified value: 2.90 to 4.20 V When brake fluid is stored in the accumulator: Accumulator pressure changes in accordance with volume of fluid stored in the accumulator
        Yaw Rate Sensor Yaw rate sensor / Min.: -128 degrees/s, Max.: 127 degrees/s

        Vehicle stopped: 0 degrees/s

        Turning right: -128 to 0 degrees/s

        Turning left: 0 to 127 degrees/s

        		 -
        Lateral G

        Lateral G / Min.: -25.10 m/s2, Max.: 24.90 m/s2

        		- During turning: Changes in proportion with lateral 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 Front speed sensor RH / Min.: 0 km/h (0 mph), Max.: 326 km/h (202 mph) Vehicle stopped: 0 km/h (0 mph) When driving at constant speed: No large fluctuations
        FL Wheel Speed Front speed sensor LH / Min.: 0 km/h (0 mph), Max.: 326 km/h (202 mph) Vehicle stopped: 0 km/h (0 mph) When driving at constant speed: No large fluctuations
        RR Wheel Speed Rear speed sensor RH / Min.: 0 km/h (0 mph), Max.: 326 km/h (202 mph) Vehicle stopped: 0 km/h (0 mph) When driving at constant speed: No large fluctuations
        RL Wheel Speed Rear speed sensor LH / Min.: 0 km/h (0 mph), Max.: 326 km/h (202 mph) Vehicle stopped: 0 km/h (0 mph) When driving at constant speed: No large fluctuations
        Vehicle Speed Maximum wheel speed sensor / Min.: 0 km/h (0 mph), Max.: 326 km/h (202 mph) Vehicle stopped: 0 km/h (0 mph) When driving at constant speed: No large fluctuations
        Accelerator Opening Angle % Percentage of accelerator pedal opening angle / Min.: 0.0%, Max.: 128.0% When the accelerator pedal released: 0.0% During accelerator pedal operation: Changes in proportion with the pedal movement
        ECB* Motor Relay ABS motor relay / ON or OFF

        ON: Relay on

        OFF: Relay off

        		 -
        ECB* Main Relay ABS main relay / ON or OFF

        ON: Relay on

        OFF: Relay off

        		 -
        IG1 Voltage Value IG1 voltage value / Min.: 0.00 V, Max.: 20.00 V - Changes in proportion to auxiliary battery voltage
        IG2 Voltage Value IG2 voltage value / Min.: 0.00 V, Max.: 20.00 V - Changes in proportion to auxiliary battery voltage
        BS1 Voltage Value BS voltage value / Min.: 0.00 V, Max.: 20.00 V - Changes in proportion to auxiliary battery voltage
        VM1 Voltage Value VM1 voltage value / Min.: 0.00 V, Max.: 20.00 V - Changes in proportion to auxiliary battery voltage
        Motor Relay Voltage Value Motor relay voltage value / Min.: 0.00 V, Max.: 20.00 V

        During motor operation: 12.00 V

        No motor operation: 0.00 V

        		 -
        Steering Angle Sensor Steering angle sensor / Min.: - 3276.8 degrees, Max.: 3276.7 degrees

        Turning left: Increases

        Turning right: Decreases

        		 -
        TRC/VSC Off Mode TRC/VSC off mode / Normal, TRC OFF or VSC OFF

        Normal: Normal mode

        TRC OFF: TRC off mode

        VSC OFF: VSC off mode

        		 -
        Regulator Pressure Sensor Output Regulator pressure sensor output / Min.: 0.00 V, Max.: 5.00 V When brake pedal released: 0.10 to 0.90 V Reading increases when brake pedal is depressed
        Regulator Pressure Sensor Output Variant Regulator pressure sensor output variant / Min.: -30 MPa/s, Max.: 225 MPa/s - -
        Wheel Cylinder Pressure Sensor Wheel cylinder pressure sensor / Min.: 0.00 V, Max.: 5.00 V When brake pedal released: 0.10 to 0.90 V Reading increases when brake pedal is depressed
        SLA Solenoid Current Linear solenoid additional valve (SLA) current / Min.: 0.00 A, Max.: 1.50 A When brake pedal released: 0.00 A -
        SLR Solenoid Current Linear solenoid reduction valve (SLR) current / Min.: 0.00 A, Max.: 1.50 A When brake pedal released: 0.00 A -
        Target Oil Pressure Wheel target hydraulic pressure / Min.: 0.00 Mpa, Max.: 20.00 Mpa Changes according to the target wheel cylinder hydraulic pressure -
        ECB* Solenoid (SSC) Simulator cut solenoid valve (SSC) / ON or OFF

        ON: Solenoid on

        OFF: Solenoid off

        		 -
        ECB* Solenoid (SCC) Switching solenoid valve (SCC) / ON or OFF

        ON: Solenoid on

        OFF: Solenoid off

        		 -
        ECB* Solenoid (SMC) Master cut solenoid valve (SMC) / ON or OFF

        ON: Solenoid on

        OFF: Solenoid off

        		 -
        ECB* Solenoid (SRC) Regulator cut solenoid valve (SRC) / ON or OFF

        ON: Solenoid on

        OFF: Solenoid off

        		 -
        Voltage of Stroke Sensor Voltage of brake pedal stroke sensor assembly / Min.: -2.50 V, Max.: 2.49 V - -
        Voltage of Stroke Sensor2 Voltage of brake pedal stroke sensor assembly 2 / Min.: -2.50 V, Max.: 2.49 V - -

        *: Electronically Controlled Brake System

  3. CLEAR FREEZE FRAME DATA AND INFORMATION

    Note

    Clearing the DTCs will also clear the Freeze Frame Data and information codes (INF codes).


    1. Connect the GTS to the DLC3.

    2. Turn the power switch on (IG).

    3. Turn the GTS on.

    4. Clear the DTCs and Freeze Frame Data Click here.