ELECTRONICALLY CONTROLLED BRAKE SYSTEM > FREEZE FRAME DATA

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FREEZE FRAME DATA

  1. 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 the ON position since the last time the ABS was activated.

    HINT:
    1. However, if the vehicle is stopped or at low speed (4.3 mph (7 km/h) or less), or if a DTC is detected, the skid control ECU will stop counting the number since then.
    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 erased.
    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.

  2. Connect the intelligent tester to the DLC3.

  3. Turn the ignition switch on.

  4. From the display on the tester, select the FREEZE FRAME DATA.

    Intelligent Tester Display
    		Measurement Item
    		Reference Value
    Vehicle Speed
    		Vehicle speed reading
    		Min.: 0 mph (0 km/h), Max.: 202 mph (326.4 km/h)
    Stop Lamp SW
    		Stop light switch signal
    		Stop light switch ON: ON, OFF: OFF
    Number of IG ON
    		Number of operations of ignition switch on after storing freeze frame data
    		0 to 31
    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.: 255 MPa/s
    Yaw Rate Sensor
    		Yaw rate sensor reading
    		Min.: -128 deg/s, Max.: 127 deg/s
    Steering Angle Sensor
    		Steering angle sensor reading
    		Left turn: Increase
    Right turn: Drop
    Forward and Rearward G
    		Forward and rearward G
    		Min.: -25.11 m/s2, Max.: 24.91 m/s2
    Buzzer
    		Skid control buzzer signal
    		Skid control buzzer ON: ON, OFF: OFF
    Parking Brake SW
    		Parking brake switch signal
    		Parking brake switch ON: ON, OFF: OFF
    FR Wheel Speed
    		FR wheel speed reading
    		Min.: 0 mph (0 km/h), Max.: 202 mph (326.4 km/h)
    FL Wheel Speed
    		FL wheel speed reading
    		Min.: 0 mph (0 km/h), Max.: 202 mph (326.4 km/h)
    RR Wheel Speed
    		RR wheel speed reading
    		Min.: 0 mph (0 km/h), Max.: 202 mph (326.4 km/h)
    RL Wheel Speed
    		RL wheel speed reading
    		Min.: 0 mph (0 km/h), Max.: 202 mph (326.4 km/h)
    Lateral G
    		Lateral G
    		Min.: -25.11 m/s2, Max.: 24.91 m/s2
    Gear Position
    		Gear position information
    		FAIL
    1st
    2nd
    3rd
    4th
    5th
    6th
    P, N
    R
    NOT R
    Shift Lever Position
    		Shift lever position information
    		FAIL
    1st
    2nd
    3rd
    4th
    5th
    6th/B
    D/M
    P, N
    R
    TRC (TRAC) / VSC OFF SW
    		Traction control switch signal
    		Traction control switch ON: ON, OFF: OFF
    Operated System
    		Operated system status
    		ABS activated: ABS
    VSC activated: VSC
    TRAC activated: TRAC
    BA activated: BA
    HAB activated: HAB
    PBA activated: PBA
    PB activated: PB
    Fail safe mode activated: FAIL
    No system activated: SYS
    Elapsed Time after Freeze Trigger
    		Elapsed time after freeze trigger
    		Min.: 0 ms, Max.: 500 ms
    Stroke Sensor
    		Stroke sensor reading
    		Min.: 0 V, Max.: 5 V
    Stroke Sensor2
    		Stroke sensor 2 reading
    		Min.: 0 V, Max.: 5 V
    FR W/C Sensor
    		FR wheel cylinder pressure sensor reading
    		Min.: 0 V, Max.: 5 V
    FL W/C Sensor
    		FL wheel cylinder pressure sensor reading
    		Min.: 0 V, Max.: 5 V
    RR W/C Sensor
    		RR wheel cylinder pressure sensor reading
    		Min.: 0 V, Max.: 5 V
    RL W/C Sensor
    		RL wheel cylinder pressure sensor reading
    		Min.: 0 V, Max.: 5 V
    Accumulator Sensor
    		Accumulator pressure sensor reading
    		Min.: 0 V, Max.: 5 V
    Master Cylinder Sensor2
    		Master cylinder pressure sensor reading
    		Min.: 0 V, Max.: 5 V
    Motor Relay Voltage Value
    		Motor relay voltage value
    		Min.: 0 V, Max.: 20 V
    SLAFR Solenoid Current
    		SLAFR solenoid current
    		Min.: 0 A, Max.: 1.5 A
    SLAFL Solenoid Current
    		SLAFL solenoid current
    		Min.: 0 A, Max.: 1.5 A
    SLARR Solenoid Current
    		SLARR solenoid current
    		Min.: 0 A, Max.: 1.5 A
    SLARL Solenoid Current
    		SLARL solenoid current
    		Min.: 0 A, Max.: 1.5 A
    SLRFR Solenoid Current
    		SLRFR solenoid current
    		Min.: 0 A, Max.: 1.5 A
    SLRFL Solenoid Current
    		SLRFL solenoid current
    		Min.: 0 A, Max.: 1.5 A
    SLRRR Solenoid Current
    		SLRRR solenoid current
    		Min.: 0 A, Max.: 1.5 A
    SLRRL Solenoid Current
    		SLRRL solenoid current
    		Min.: 0 A, Max.: 1.5 A
    FR Target Oil Pressure
    		FR wheel target oil pressure reading
    		Min.: 0 MPa, Max.: 20 MPa
    FL Target Oil Pressure
    		FL wheel target oil pressure reading
    		Min.: 0 MPa, Max.: 20 MPa
    RR Target Oil Pressure
    		RR wheel target oil pressure reading
    		Min.: 0 MPa, Max.: 20 MPa
    RL Target Oil Pressure
    		RL wheel target oil pressure reading
    		Min.: 0 MPa, Max.: 20 MPa
    DETAILED CODE
    		Detailed code for freeze frame DTC
    		Min.: 0, Max.: 65535
    IG1 Voltage Value
    		IG1 voltage value
    		Min.: 0 V, Max.: 20 V
    IG2 Voltage Value
    		IG2 voltage value
    		Min.: 0 V, Max.: 20 V
    BS1 Voltage Value
    		BS1 voltage value
    		Min.: 0 V, Max.: 20 V
    BS2 Voltage Value
    		BS2 voltage value
    		Min.: 0 V, Max.: 20 V
    VM1 Voltage Value
    		VM1 voltage value
    		Min.: 0 V, Max.: 20 V
    VM2 Voltage Value
    		VM2 voltage value
    		Min.: 0 V, Max.: 20 V
    +B1 Voltage Value
    		+B1 voltage value
    		Min.: 0 V, Max.: 20 V
    +B2 Voltage Value
    		+B2 voltage value
    		Min.: 0 V, Max.: 20 V
    Elapsed Time
    		Elapsed time after ignition switch on
    		Min.: 0 sec., Max.: 100661.76 sec.
    Capacitor Mode
    		Capacitor mode
    		Capacitor mode ON: ON, OFF: OFF
    ECB Solenoid (SCSS)
    		ECB solenoid (SCSS) signal
    		ECB solenoid (SCSS) ON: ON, OFF: OFF
    ECB Solenoid (SMC1)
    		ECB solenoid (SMC1) signal
    		ECB solenoid (SMC1) ON: ON, OFF: OFF
    ECB Solenoid (SMC2)
    		ECB solenoid (SMC2) signal
    		ECB solenoid (SMC2) ON: ON, OFF: OFF
    ECB Main Relay
    		ECB main relay signal
    		ECB main relay ON: ON, OFF: OFF
    ECB Main Relay2
    		ECB main relay 2 signal
    		ECB main relay 2 ON: ON, OFF: OFF
    ECB Motor Relay
    		ECB motor relay signal
    		ECB motor relay ON: ON, OFF: OFF
    ECB Motor Relay2
    		ECB motor relay 2 signal
    		ECB motor relay 2 ON: ON, OFF: OFF
    Reservoir Warning SW
    		Brake fluid level warning switch signal
    		Brake fluid level warning switch ON: ON, OFF: OFF