VEHICLE STABILITY CONTROL SYSTEM FREEZE FRAME DATA


  1. FREEZE FRAME DATA


    1. Whenever an ABS DTC is detected, the skid control ECU (brake actuator assembly) stores the current vehicle (ECU or sensor) state as Freeze Frame Data.

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

      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 actuator assembly) will stop counting the number.

      • Freeze Frame Data at the time the ABS operates:

        The skid control ECU (brake actuator 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 actuator 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


    1. Turn the engine switch off.

    2. Connect the GTS to the DLC3.

    3. Turn the engine switch on (IG).

    4. Turn the GTS on.

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

    6. Select a DTC to display its Freeze Frame Data.

      ABS/VSC/TRC
      Tester Display Measurement Item/Range Normal Condition Diagnostic Note
      FR Speed Open Front speed sensor RH open detection / Error or Normal

      Error: Momentary interruption

      Normal: Normal

      		 -
      FL Speed Open Front speed sensor LH open detection / Error or Normal

      Error: Momentary interruption

      Normal: Normal

      		 -
      RR Speed Open Rear speed sensor RH open detection / Error or Normal

      Error: Momentary interruption

      Normal: Normal

      		 -
      RL Speed Open Rear speed sensor LH open detection / Error or Normal

      Error: Momentary interruption

      Normal: Normal

      		 -
      EFI Communication Open ECM communication open detection / Error or Normal

      Error: Momentary interruption

      Normal: Normal

      		 -
      Yaw Rate Open Yaw rate sensor open detection / Error or Normal

      Error: Momentary interruption

      Normal: Normal

      		 -
      Deceleration Open Acceleration sensor open detection / Error or Normal

      Error: Momentary interruption

      Normal: Normal

      		 -
      Steering Open Steering angle sensor open detection / Error or Normal

      Error: Momentary interruption

      Normal: Normal

      		 -
      Master Cylinder Open Master cylinder pressure sensor open detection / Error or Normal

      Error: Momentary interruption

      Normal: Normal

      		 -
      FR Speed Sensor Voltage Open Front speed sensor RH voltage open detection / Error or Normal

      Error: Momentary interruption

      Normal: Normal

      		 -
      FL Speed Sensor Voltage Open Front speed sensor LH voltage open detection / Error or Normal

      Error: Momentary interruption

      Normal: Normal

      		 -
      RR Speed Sensor Voltage Open Rear speed sensor RH voltage open detection / Error or Normal

      Error: Momentary interruption

      Normal: Normal

      		 -
      RL Speed Sensor Voltage Open Rear speed sensor LH voltage open detection / Error or Normal

      Error: Momentary interruption

      Normal: Normal

      		 -
      M/C Pressure Sensor Noise Master cylinder pressure sensor noise detection / Error or Normal

      Error: Momentary interruption

      Normal: Normal

      		 -
      Brake Pedal Switch Open Brake pedal load sensing switch open detection / Error or Normal

      Error: Momentary interruption

      Normal: Normal

      		 -
      Yaw Rate Sensor Voltage Open Yaw rate sensor voltage open detection / Error or Normal

      Error: Momentary interruption

      Normal: Normal

      		 -
      EFI Communication Invalid ECM communication invalid detection / Error or Normal

      Error: Invalid

      Normal: Normal

      		 -
      Number of IG ON Number of times engine switch turned on (IG) after Freeze Frame Data stored / 0 to 31 - -
      Elapsed Time Time elapsed after engine switch turned on (IG) / Min.: 0 sec, Max.: 100661 sec - -
      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

      		 -
      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, TRC, BA, HAB, PBA, PB, HA-CTRL, TSC, Fail, Sys or Non Actual operated system

      ABS: ABS activated

      VSC: VSC activated

      TRC: TRC activated

      BA: BA activated

      HAB: HAB activated*

      PBA: PBA activated

      PB: PB activated*

      HA-CTRL: Hill-start assist control activated

      TSC: TSC activated*

      Fail: Fail safe mode activated

      Sys: System prohibit activated

      Non: No operation activated
      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 operated: Changes in proportion with pedal movement speed
      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

      		 -
      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 wheel speed sensor RH reading / 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 wheel speed sensor LH reading / 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 wheel speed sensor RH reading / 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 wheel speed sensor LH reading / 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 reading / 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 Grade

      Vehicle speed grade / Min.: -25.10 m/s2, Max.: 24.90 m/s2

      Vehicle stopped: 0 m/s2

      		During driving: Changes in proportion with vehicle acceleration/deceleration
      Real Engine Torque Real engine torque / Min.: -1024.0 Nm, Max.: 1023.0 Nm - -
      Accelerator Opening Angle % Percentage of accelerator pedal opening angle / Min.: 0.0%, Max.: 127.0% When the accelerator pedal is released: 0.0% During accelerator pedal operation: Changes in proportion with the pedal movement
      BS1 Voltage Value +BS voltage value / Min.: 0.00 V, Max.: 20.00 V Engine switch on (IG): 11 to 14 V Changes in proportion to battery voltage
      FR Target Oil Pressure Front wheel RH target oil pressure / Min.: 0.00 V, Max.: 20.00 V - Different according to target oil pressure of each wheel
      FL Target Oil Pressure Front wheel LH target oil pressure / Min.: 0.00 V, Max.: 20.00 V - Different according to target oil pressure of each wheel
      RR Target Oil Pressure Rear wheel RH target oil pressure / Min.: 0.00 V, Max.: 20.00 V - Different according to target oil pressure of each wheel
      RL Target Oil Pressure Rear wheel LH target oil pressure / Min.: 0.00 V, Max.: 20.00 V - Different according to target oil pressure of each wheel
      Brake Pedal Load Sensing SW Brake pedal load sensing switch / ON or OFF

      ON: Brake pedal depressed beyond a specified point

      OFF: Brake pedal not depressed beyond a specified point

      		 -
      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°

      Turning left: Increases

      Turning right: Decreases

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

      Normal: Normal mode

      TRC OFF: TRC off mode

      VSC Expert Mode: VSC expert mode

      VSC OFF: VSC off mode

      		 -
      Master Cylinder Pressure Master cylinder pressure sensor pressure / Min.: 0.00 Mpa, Max.: 23.28 Mpa

      Proportional to pedal force: Pedal operated

      0.00 Mpa: Pedal released

      		 -
      Master Cylinder Sensor Temperature Master cylinder pressure sensor temperature / Min.: -80°C (-112°F), Max.: 175°C (347°F) - Displays current master cylinder temperature
      Vehicle Stop Time from IG ON Time vehicle stopped after engine switch turned on (IG) / Min.: 0 s, Max.: 1275 s - -
      Travel Distance from IG ON Driving time after engine switch turned on (IG) / Min.: 0 s, Max.: 1275 s - -
      Engine Revolutions Engine speed / Min.: 0 rpm, Max.: 25500 rpm - -
      Motor Power Supply Voltage Motor power supply voltage / Min.: 0.00 V, Max.: 20.00 V Engine switch on (IG): 11 to 14 V Changes in proportion to battery voltage
      Solenoid Power Supply Voltage Solenoid power supply voltage / Min.: 0.00 V, Max.: 20.00 V Engine switch on (IG): 11 to 14 V Changes in proportion to battery voltage
      MT Voltage Value Motor voltage value / Min.: 0.00 V, Max.: 20.00 V - Changes in proportion to battery voltage
      Stop Light Relay State for ECU Control Stop light control relay (for ECU control) / ON or OFF

      ON: Stop light control relay operating

      OFF: Stop light control relay not operating

      		 -
      Engine Stop by Stop and Start System Engine stopped by stop and start system status / ON or OFF

      ON: Engine stopped by stop and start control

      OFF: Engine not stopped by stop and start control

      		 -
      Solenoid State for ECU Control Solenoid (for ECU control) status / ON or OFF

      ON: Solenoid relay operating

      OFF: Solenoid relay not operating

      		 -
      Motor State for ECU Control Motor (for ECU control) status / ON or OFF

      ON: Motor relay operating

      OFF: Motor relay not operating

      		 -
      Operation History of IG OFF while Vehicle is moving History of engine switch turned off when vehicle is in motion / ON or OFF

      ON: History of engine switch turned off with vehicle speed 3 km/h (2 mph) or higher

      OFF: No history

      		 -
      Master Cylinder Pressure Sensor Power Supply Open Master cylinder pressure sensor power supply voltage status / Error or Normal

      Error: Momentary interruption

      Normal: Normal

      		 -
      Solenoid Power Supply Open Solenoid power supply voltage status / Error or Normal

      Error: Momentary interruption

      Normal: Normal

      		 -
      Motor Power Supply Open Motor power supply voltage status / Error or Normal

      Error: Momentary interruption

      Normal: Normal

      		 -
      Stop Switch Open Momentary interruption (open circuit) status in the wire harness between the skid control ECU (brake actuator assembly) and the stop light switch assembly / Error or Normal

      Error: Momentary interruption

      Normal: Normal

      		 -
      IG Switch Engine switch on (IG) status / ON or OFF - -
      Elapsed Time after Freeze Trigger Elapsed time after storing freeze frame data / Min.: 0 msec, Max.: 1020 msec - -

      Tech Tips

      *: Not supported

  3. CLEAR FREEZE FRAME DATA

    Note

    Clearing the DTC will also clear the Freeze Frame Data.


    1. Turn the engine switch off.

    2. Connect the GTS to the DLC3.

    3. Turn the engine switch on (IG).

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