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 assembly stores the current vehicle (sensor) state as Freeze Frame Data.

    2. The skid control ECU 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 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 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 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 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.


      Chassis > ABS/VSC/TRC > Trouble Codes

    5. Read the Freeze Frame Data recorded when the DTCs were stored.

    6. Read the information.


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


        Chassis > 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 codes (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

        		 -
        TRC(TRAC)/VSC OFF SW VSC OFF switch (Combination switch assembly) ON or OFF

        ON: Switch on

        OFF: Switch off

        		 -
        Reservoir Warning SW Brake fluid level warning switch (Brake master cylinder reservoir assembly) ON or OFF

        ON: Reservoir level low

        OFF: Reservoir level normal

        		 -
        Shift Lever Position Shift lever position information Fail, 1st-6th/B, D/M, P,N or R Actual shift lever 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: High power assist brake activated*

        HA-CTRL: Hill-start assist control activated*

        TSC: Trailer sway control activated*

        Fail: Fail safe mode activated

        Non: No system activated

        Sys: System prohibited

        Tech Tips

        *: Not supported
        Master Cylinder Sensor Master cylinder pressure sensor 1 Min.: 0.00 V, Max.: 5.00 V Brake pedal released: 0.30 to 0.70 V Reading increases when brake pedal is depressed
        M/C Sensor Grade Master cylinder pressure sensor change Min.: -30 MPa/s, Max.: 225 MPa/s Brake pedal released or pedal held at constant position: 0 MPa/s When brake pedal is being depressed: Changes in proportion with pedal movement speed
        Master Cylinder Sensor2 Master cylinder pressure sensor 2 Min.: 0.00 V, Max.: 5.00 V Brake pedal released: 0.30 to 0.70 V Reading increases when brake pedal is depressed
        Stroke Sensor Brake pedal stroke sensor assembly 1 Min.: 0.00 V, Max.: 5.00 V Brake pedal released: 0.80 to 1.20 V Reading increases when brake pedal is depressed
        Stroke Sensor2 Brake pedal stroke sensor assembly 2 Min.: 0.00 V, Max.: 5.00 V Brake pedal released: 3.80 to 4.20 V Reading decreases when brake pedal is depressed
        Accumulator Sensor Accumulator pressure sensor Min.: 0.00 V, Max.: 5.00 V Specified value: 2.60 to 3.80 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

        		 -
        FR W/C Sensor Front wheel cylinder pressure sensor RH Min.: 0.00 V, Max.: 5.00 V Brake pedal released: 0.30 to 0.70 V Reading increases when brake pedal is depressed
        FL W/C Sensor Front wheel cylinder pressure sensor LH Min.: 0.00 V, Max.: 5.00 V Brake pedal released: 0.30 to 0.70 V Reading increases when brake pedal is depressed
        RR W/C Sensor Rear wheel cylinder pressure sensor RH Min.: 0.00 V, Max.: 5.00 V Brake pedal released: 0.30 to 0.70 V Reading increases when brake pedal is depressed
        RL W/C Sensor Rear wheel cylinder pressure sensor LH Min.: 0.00 V, Max.: 5.00 V Brake pedal released: 0.30 to 0.70 V Reading increases when brake pedal is depressed
        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.: 127.0% Accelerator pedal released: 0.0% During accelerator pedal operation: Changes in proportion with the pedal movement
        ECB Motor Relay ABS motor relay 1 ON or OFF

        ON: Relay on

        OFF: Relay off

        		 ECB: Electronically Controlled Brake System
        ECB Motor Relay2 ABS motor relay 2 ON or OFF

        ON: Relay on

        OFF: Relay off

        		 ECB: Electronically Controlled Brake System
        ECB Main Relay ABS main relay 1 ON or OFF

        ON: Relay on

        OFF: Relay off

        		 ECB: Electronically Controlled Brake System
        ECB Main Relay2 ABS main relay 2 ON or OFF

        ON: Relay on

        OFF: Relay off

        		 ECB: Electronically Controlled Brake System
        ECB Solenoid (SMC1) Master cut solenoid (SMC1) ON or OFF

        ON: Solenoid on

        OFF: Solenoid off

        		 ECB: Electronically Controlled Brake System
        ECB Solenoid (SMC2) Master cut solenoid (SMC2) ON or OFF

        ON: Solenoid on

        OFF: Solenoid off

        		 ECB: Electronically Controlled Brake System
        Capacitor Mode Capacitor mode ON or OFF

        ON: Mode on

        OFF: Mode 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 BS1 voltage value Min.: 0.00 V, Max.: 20.00 V - Changes in proportion to auxiliary battery voltage
        BS2 Voltage Value BS2 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
        VM2 Voltage Value VM2 voltage value Min.: 0.00 V, Max.: 20.00 V - Changes in proportion to auxiliary battery voltage
        +B1 Voltage Value +B1 voltage value Min.: 0.00 V, Max.: 20.00 V - Changes in proportion to auxiliary battery voltage
        +B2 Voltage Value +B2 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 - -
        SLAFR Solenoid Current Linear solenoid (FRA) current Min.: 0.00 A, Max.: 1.50 A Brake pedal released: 0.00 A -
        SLAFL Solenoid Current Linear solenoid (FLA) current Min.: 0.00 A, Max.: 1.50 A Brake pedal released: 0.00 A -
        SLARR Solenoid Current Linear solenoid (RRA) current Min.: 0.00 A, Max.: 1.50 A Brake pedal released: 0.00 A -
        SLARL Solenoid Current Linear solenoid (RLA) current Min.: 0.00 A, Max.: 1.50 A Brake pedal released: 0.00 A -
        SLRFR Solenoid Current Linear solenoid (FRR) current Min.: 0.00 A, Max.: 1.50 A Brake pedal released: 0.00 A -
        SLRFL Solenoid Current Linear solenoid (FLR) current Min.: 0.00 A, Max.: 1.50 A Brake pedal released: 0.00 A -
        SLRRR Solenoid Current Linear solenoid (RRR) current Min.: 0.00 A, Max.: 1.50 A Brake pedal released: 0.00 A -
        SLRRL Solenoid Current Linear solenoid (RLR) current Min.: 0.00 A, Max.: 1.50 A Brake pedal released: 0.00 A -
        FR Target Oil Pressure Front wheel RH target hydraulic pressure Min.: 0.00 Mpa, Max.: 20.00 Mpa - Changes according to the target wheel cylinder hydraulic pressure
        FL Target Oil Pressure Front wheel LH target hydraulic pressure Min.: 0.00 Mpa, Max.: 20.00 Mpa - Changes according to the target wheel cylinder hydraulic pressure
        RR Target Oil Pressure Rear wheel RH target hydraulic pressure Min.: 0.00 Mpa, Max.: 20.00 Mpa - Changes according to the target wheel cylinder hydraulic pressure
        RL Target Oil Pressure Rear wheel LH target hydraulic pressure Min.: 0.00 Mpa, Max.: 20.00 Mpa - Changes according to the target wheel cylinder hydraulic pressure
        Inspection Mode Inspection mode Other or Inspect

        Other: Normal mode

        Inspect: Inspection mode

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

        Turning left: Increases

        Turning right: Decreases

        		 -
        VCM1 Voltage Value VCM1 voltage value Min.: 0.00 V, Max.: 10.00 V Specified value: 4.80 to 5.20 V -
        VCM2 Voltage Value VCM2 voltage value Min.: 0.00 V, Max.: 10.00 V Specified value: 4.80 to 5.20 V -
        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

        		 -
        Voltage of Stroke Sensor Voltage of brake pedal stroke sensor assembly 1 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 - -

  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


      Chassis > ABS/VSC/TRC > Clear DTCs