ELECTRONICALLY CONTROLLED BRAKE SYSTEM FREEZE FRAME DATA


  1. FREEZE FRAME DATA/INFORMATION


    1. Whenever an ABS, VSC, electronically controlled brake system 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 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, information (INF) codes that are contained in the Freeze Frame Data can be displayed on the intelligent tester.

      Tech Tips


      • 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 will stop counting the number of times the power switch had been turned from off to on (IG).

      • 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.

      • 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.

  2. CHECK FREEZE FRAME DATA AND INFORMATION


    1. Connect the intelligent tester to the DLC3.

    2. Turn the power switch on (IG).

    3. Turn the intelligent tester on.

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

    5. According to the display on the intelligent tester, select the DTC data display with Freeze Frame Data.

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

    7. Read the information.


      1. Select the item that has an information (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 (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 operations of power switch on (IG) after storing Freeze Frame Data / 0 to 31 - -
        Elapsed Time Elapsed time after power switch on (IG) / Min.: 0 sec., Max.: 100661.76 sec. - -
        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

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

        ON: Switch on

        OFF: Switch off

        		 -
        Reservoir Warning SW Brake fluid level warning switch / 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, TRAC, BA, PB, PBA, HAB, HA-CTRL, Fail, Non or Sys -

        ABS: ABS activated

        VSC: VSC activated

        TRAC: TRC activated

        BA: BA activated

        PB: PB activated

        PBA: PBA activated

        HAB: HAB activated

        HA-CTRL: Hill-start assist control activated

        Fail: Fail safe mode activated

        Non: No system activated

        Sys: System prohibited
        Master Cylinder Sensor Master cylinder pressure sensor 1 / Min.: 0 V, Max.: 5 V When brake pedal released: 0.3 to 0.7 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 When brake pedal is 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 V, Max.: 5 V When brake pedal released: 0.3 to 0.7 V Reading increases when brake pedal is depressed
        Stroke Sensor Brake pedal stroke sensor / Min.: 0 V, Max.: 5 V When brake pedal released: 0.8 to 1.2 V Reading increases when brake pedal is depressed
        Stroke Sensor2 Brake pedal stroke sensor 2 / Min.: 0 V, Max.: 5 V When brake pedal released: 3.8 to 4.2 V Reading decreases when brake pedal is depressed
        Accumulator Sensor Accumulator pressure sensor / Min.: 0 V, Max.: 5 V Specified value: 2.6 to 3.8 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 °/s, Max.: 127 °/s

        Vehicle stopped: 0 °/s

        Turning right: -128 to 0 °/s

        Turning left: 0 to 127 °/s

        		 -
        FR W/C Sensor FR wheel cylinder pressure sensor / Min.: 0 V, Max.: 5 V When brake pedal released: 0.3 to 0.7 V Reading increases when brake pedal is depressed
        FL W/C Sensor FL wheel cylinder pressure sensor / Min.: 0 V, Max.: 5 V When brake pedal released: 0.3 to 0.7 V Reading increases when brake pedal is depressed
        RR W/C Sensor RR wheel cylinder pressure sensor / Min.: 0 V, Max.: 5 V When brake pedal released: 0.3 to 0.7 V Reading increases when brake pedal is depressed
        RL W/C Sensor RL wheel cylinder pressure sensor / Min.: 0 V, Max.: 5 V When brake pedal released: 0.3 to 0.7 V Reading increases when brake pedal is depressed
        Lateral G

        Lateral G / Min.: -25.20 m/s2, Max.: 24.91 m/s2

        		- During turning: Changes in proportion with acceleration
        Forward and Rearward G

        Forward and backward G / Min.: -25.11 m/s2, Max.: 24.91 m/s2

        		- During acceleration/deceleration: Changes in proportion with acceleration
        FR Wheel Speed FR wheel speed sensor / Min.: 0 km/h (0 mph), Max.: 326.4 km/h (202 mph) Vehicle stopped: 0 km/h (0 mph) When driving at constant speed: No large fluctuations
        FL Wheel Speed FL wheel speed sensor / Min.: 0 km/h (0 mph), Max.: 326.4 km/h (202 mph) Vehicle stopped: 0 km/h (0 mph) When driving at constant speed: No large fluctuations
        RR Wheel Speed RR wheel speed sensor / Min.: 0 km/h (0 mph), Max.: 326.4 km/h (202 mph) Vehicle stopped: 0 km/h (0 mph) When driving at constant speed: No large fluctuations
        RL Wheel Speed RL wheel speed sensor / Min.: 0 km/h (0 mph), Max.: 326.4 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.: 326.4 km/h (202 mph) Vehicle stopped: 0 km/h (0 mph) When driving at constant speed: No large fluctuations
        Accelerator Opening Angle % The difference of a present accelerator / Min.: 0%, Max.: 127% When the accelerator pedal released: 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* Motor Relay2 ABS motor relay 2 / ON or OFF

        ON: Relay on

        OFF: Relay off

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

        ON: Relay on

        OFF: Relay off

        		 -
        ECB* Main Relay2 ABS main relay 2 / ON or OFF

        ON: Relay on

        OFF: Relay off

        		 -
        ECB* Solenoid (SMC1) Master cut solenoid (SMC1) / ON or OFF

        ON: Solenoid on

        OFF: Solenoid off

        		 -
        ECB* Solenoid (SMC2) Master cut solenoid (SMC2) / ON or OFF

        ON: Solenoid on

        OFF: Solenoid off

        		 -
        ECB* Solenoid (SCSS) Stroke simulator solenoid (SCSS) / ON or OFF

        ON: Solenoid on

        OFF: Solenoid off

        		 -
        Capacitor Mode Capacitor mode/ ON or OFF

        ON: Mode on

        OFF: Mode off

        		 -
        IG1 Voltage Value IG1 voltage value / Min.: 0 V, Max.: 20 V - Changes in proportion to auxiliary battery voltage
        IG2 Voltage Value IG2 voltage value / Min.: 0 V, Max.: 20 V - Changes in proportion to auxiliary battery voltage
        BS1 Voltage Value BS1 voltage value / Min.: 0 V, Max.: 20 V - Changes in proportion to auxiliary battery voltage
        BS2 Voltage Value BS2 voltage value / Min.: 0 V, Max.: 20 V - Changes in proportion to auxiliary battery voltage
        VM1 Voltage Value VM1 voltage value / Min.: 0 V, Max.: 20 V - Changes in proportion to auxiliary battery voltage
        VM2 Voltage Value VM2 voltage value / Min.: 0 V, Max.: 20 V - Changes in proportion to auxiliary battery voltage
        +B1 Voltage Value +B1 voltage value / Min.: 0 V, Max.: 20 V - Changes in proportion to auxiliary battery voltage
        +B2 Voltage Value +B2 voltage value / Min.: 0 V, Max.: 20 V - Changes in proportion to auxiliary battery voltage
        Motor Relay Voltage Value Motor relay voltage value / Min.: 0 V, Max.: 20 V - Changes in proportion to auxiliary battery voltage
        SLAFR Solenoid Current Linear solenoid (FRA) current / Min.: 0 A, Max.: 1.5 A When brake pedal released: 0 A -
        SLAFL Solenoid Current Linear solenoid (FLA) current / Min.: 0 A, Max.: 1.5 A When brake pedal released: 0 A -
        SLARR Solenoid Current Linear solenoid (RRA) current / Min.: 0 A, Max.: 1.5 A When brake pedal released: 0 A -
        SLARL Solenoid Current Linear solenoid (RLA) current / Min.: 0 A, Max.: 1.5 A When brake pedal released: 0 A -
        SLRFR Solenoid Current Linear solenoid (FRR) current / Min.: 0 A, Max.: 1.5 A When brake pedal released: 0 A -
        SLRFL Solenoid Current Linear solenoid (FLR) current / Min.: 0 A, Max.: 1.5 A When brake pedal released: 0 A -
        SLRRR Solenoid Current Linear solenoid (RRR) current / Min.: 0 A, Max.: 1.5 A When brake pedal released: 0 A -
        SLRRL Solenoid Current Linear solenoid (RLR) current / Min.: 0 A, Max.: 1.5 A When brake pedal released: 0 A -
        FR Target Oil Pressure FR wheel target hydraulic pressure / Min.: 0 MPa, Max.: 20 MPa Changes according to the target wheel cylinder hydraulic pressure -
        FL Target Oil Pressure FL wheel target hydraulic pressure / Min.: 0 MPa, Max.: 20 MPa Changes according to the target wheel cylinder hydraulic pressure -
        RR Target Oil Pressure RR wheel target hydraulic pressure / Min.: 0 MPa, Max.: 20 MPa Changes according to the target wheel cylinder hydraulic pressure -
        RL Target Oil Pressure RL wheel target hydraulic pressure / Min.: 0 MPa, Max.: 20 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°, Max.: 3276.7°

        Left turn: Increase

        Right turn: Decrease

        		 -
        VCM1 Voltage Value VCM voltage value / Min.: 0 V, Max.: 10 V Specified value: 4.8 to 5.2 V -
        VCM2 Voltage Value VCM2 voltage value / Min.: 0 V, Max.: 10 V Specified value: 4.8 to 5.2 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

        		 -

        *: Electronically Controlled Brake System

  3. CLEAR FREEZE FRAME DATA AND INFORMATION

    Note

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


    1. Connect the intelligent tester to the DLC3.

    2. Turn the power switch on (IG).

    3. Turn the intelligent tester on.

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