ELECTRIC PARKING BRAKE SYSTEM FREEZE FRAME DATA


  1. FREEZE FRAME DATA

    Tech Tips


    • If a DTC is output, the freeze frame data is recorded when the DTC occurs.

    • If freeze frame data is recorded when a DTC occurs, the freeze frame data is not cleared or updated until the recorded DTC is cleared.


    1. Using the GTS, the condition of the vehicle (sensors) when the system is operating or when the malfunction DTC was recorded can be checked.


      Chassis > Electric Parking Brake
      Tester Display Measurement Item Range Normal Condition Diagnostic Note
      Invalid Tension Sensor Output Tension sensor output invalid details are displayed Enable or Disable Enable -
      Invalid Tension Sensor PWR Tension sensor power source invalid details are displayed Enable or Disable Enable -
      Invalid Tension Sensor Comp Tension sensor comparison invalid details are displayed Enable or Disable Enable -
      Tension Sensor 1 Value Tension sensor 1 value input information is displayed

      Min.: 0.000 V

      Max.: 5.000 V

      0.5 to 4.5 V When not normal, tension sensor signal system may be malfunctioning
      Tension Sensor 2 Value Tension sensor 2 value input information is displayed

      Min.: 0.000 V

      Max.: 5.000 V

      0.5 to 4.5 V When not normal, tension sensor signal system may be malfunctioning
      Target Tension Target tension input information is displayed

      Min.: 0 N

      Max.: 3571 N

      - -
      Tension Sensor1 Zero Pt Value Tension sensor 1 zero point calibration input information is displayed

      Min.: 0.000 V

      Max.: 5.000 V

      0.5 to 1.65 V

      (after calibrating zero point)

      When not normal, tension sensor signal system may be malfunctioning
      Tension Sensor2 Zero Pt Value Tension sensor 2 zero point calibration input information is displayed

      Min.: 0.000 V

      Max.: 5.000 V

      0.5 to 1.65 V

      (after calibrating zero point)

      When not normal, tension sensor signal system may be malfunctioning
      Motor Current Value Motor current zero point calibration completed input information is displayed

      Min.: -4.88 A

      Max.: 48.18 A

      -1.63 to 1.63 A: Not during control

      -1.63 to 48.18 A: During control

      When not normal, motor system may be malfunctioning.
      Motor Zero Point Value Motor current zero point calibration input information is displayed

      Min.: -6.70 A

      Max.: 6.70 A

      -1.63 to 1.63A When not normal, motor system may be malfunctioning.
      ECU Power Voltage Parking brake ECU assembly BECU voltage input information is displayed

      Min.: 0.00 V

      Max.: 20.00 V

      11 to 14 V When not normal, there may be a malfunction in the input circuit or low battery voltage.
      +B Power Voltage +B power source input information is displayed/ Lo, Mid or Hi Lo, Mid or Hi Hi -
      Zero Point of Tension Sensor Tension sensor zero point calibration completed information is displayed Uncomp or Comp Comp -
      Lock Controlling Lock control status is displayed ON or OFF

      ON: Control is operating

      OFF: Control is not operating

      -
      Release Controlling Release control status is displayed ON or OFF

      ON: Control is operating

      OFF: Control is not operating

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

      Normal: Normal

      Error: Momentary interruption

      After a momentary interruption occurs, if there is no momentary interruption for 1 second, it switches from "Error" to "Normal".
      FL Speed Sensor Open Front speed sensor LH open detection Normal or Error

      Normal: Normal

      Error: Momentary interruption

      After a momentary interruption occurs, if there is no momentary interruption for 1 second, it switches from "Error" to "Normal".
      RR Speed Sensor Open Rear speed sensor RH open detection Normal or Error

      Normal: Normal

      Error: Momentary interruption

      After a momentary interruption occurs, if there is no momentary interruption for 1 second, it switches from "Error" to "Normal".
      RL Speed Sensor Open Rear speed sensor LH open detection Normal or Error

      Normal: Normal

      Error: Momentary interruption

      After a momentary interruption occurs, if there is no momentary interruption for 1 second, it switches from "Error" to "Normal".
      EFI ECU Communication Open ECM communication open detection Normal or Error

      Normal: Normal

      Error: Momentary interruption

      After a momentary interruption occurs, if there is no momentary interruption for 1 second, it switches from "Error" to "Normal".
      Deceleration Sensor Open Deceleration sensor (yaw rate sensor) power supply voltage status Normal or Error

      Normal: Normal

      Error: Momentary interruption

      After a momentary interruption occurs, if there is no momentary interruption for 1 second, it switches from "Error" to "Normal".
      HV ECU Communication Open Hybrid vehicle control ECU assembly communication open detection Normal or Error Error
      • There is no communication with hybrid vehicle control ECU assembly. As a result, "Error" is displayed permanently.

      • This item is displayed but there is no problem.

      Body ECU Communication Open Main body ECU (multiplex network body ECU) communication open detection Normal or Error

      Normal: Normal

      Error: Momentary interruption

      After a momentary interruption occurs, if there is no momentary interruption for 1 second, it switches from "Error" to "Normal".
      Brake ECU Communication Open Skid control ECU assembly communication open detection Normal or Error

      Normal: Normal

      Error: Momentary interruption

      After a momentary interruption occurs, if there is no momentary interruption for 1 second, it switches from "Error" to "Normal".
      A/C ECU Communication Open Air conditioning amplifier assembly communication open detection Normal or Error

      Normal: Normal

      Error: Momentary interruption

      After a momentary interruption occurs, if there is no momentary interruption for 1 second, it switches from "Error" to "Normal".
      Navigation ECU Communication Open Radio receiver assembly communication open detection Normal or Error

      Normal: Normal

      Error: Momentary interruption

      After a momentary interruption occurs, if there is no momentary interruption for 1 second, it switches from "Error" to "Normal".
      Stop and Start ECU Communication Open Engine stop and start ECU communication open detection Normal or Error Error
      • Engine stop and start ECU is not installed. As a result, "Error" is displayed permanently.

      • This item is displayed but there is no problem.

      Deceleration Sensor Open (EPB) Deceleration sensor (yaw rate sensor) communication open detection Normal or Error

      Normal: Normal

      Error: Momentary interruption

      After a momentary interruption occurs, if there is no momentary interruption for 1 second, it switches from "Error" to "Normal".

      Tech Tips

      EPB stands for electric parking brake

      Forward and Rearward G Deceleration sensor (yaw rate sensor) forward and rearward G value

      -18.300 to 18.318 m/s2

      When vehicle is stopped: 0.000 m/s2

      When driving vehicle: Changes according to increase or decrease in speed

      When not normal, deceleration sensor (yaw rate sensor) system and CAN communication system may be malfunctioning, or there may be a zero point malfunction in electronically controlled brake system deceleration sensor (yaw rate sensor).
      Zero Point of Deceleration Sensor Deceleration sensor (yaw rate sensor) zero point

      -4.595 to 4.559 m/s2

      - -
      Zero Point of Deceleration Sensor 2 Deceleration sensor (yaw rate sensor) 2 zero point

      -4.595 to 4.559 m/s2

      - -
      Vehicle Speed Vehicle speed 0.0 to 326.4 km/h (0.0 to 202.8 mph)

      When vehicle is stopped: 0 km/h (0 mph)

      When driving vehicle: Changes according to vehicle speed (when vehicle speed is constant, there are no big changes in vehicle speed display)

      When not normal, speed sensor system and CAN communication may be malfunctioning
      Stop Light Switch Stop light switch assembly OFF or ON

      OFF: Brake pedal released

      ON: Brake pedal depressed

      -
      EPB Switch Electric parking brake switch assembly input OFF, Lock, Release or Unknown

      OFF: Lock switch and release switch are off

      Lock: Lock switch on

      Release: Release switch on

      When "Unknown" is displayed, electric parking brake switch assembly release side system may be malfunctioning

      Tech Tips

      EPB stands for electric parking brake.

      Auto Mode Request Auto mode request status OFF or ON

      OFF: Not requested

      ON: Requested

      -
      Shift Position Shift position information P, N, R, D or Unknown

      P: Shift position in P

      N: Shift position in N

      R: Shift position in R

      D: Shift position in D or M

      When not normal, shift position signal system may be malfunctioning
      IG Switch IG power source status OFF or ON

      OFF: IG power source not input to parking brake ECU assembly or voltage is low

      ON: Normal IG power source voltage (11 to 14 V) input to parking brake ECU assembly

      -
      Lock Switch 1 Lock switch 1 input signal OFF, ON, Open or Short

      OFF: Lock switch off

      ON: Lock switch on

      When "Open" or "Short" is displayed, electric parking brake switch assembly lock side system may be malfunctioning
      Lock Switch 2 Lock switch 2 input signal OFF, ON, Open or Short

      OFF: Lock switch off

      ON: Lock switch on

      When "Open" or "Short" is displayed, electric parking brake switch assembly lock side system may be malfunctioning
      Release Switch 1 Release switch 1 input signal OFF, ON, Open or Short

      OFF: Release switch off

      ON: Release switch on

      When "Open" or "Short" is displayed, electric parking brake switch assembly release side system may be malfunctioning
      Release Switch 2 Release switch 2 input signal OFF, ON, Open or Short

      OFF: Release switch off

      ON: Release switch on

      When "Open" or "Short" is displayed, electric parking brake switch assembly release side system may be malfunctioning
      Brake Hold Ready Brake hold control permission status OFF or ON - -
      Brake Hold Control Mode OFF, ON, Release or EPB OFF, ON, Release or EPB

      OFF: Brake hold control is not operating

      ON: Brake hold control is operating Release: Brake hold control is released

      EPB: Parking brake is locked during brake hold control

      Tech Tips

      EPB stands for electric parking brake

      EPB Lock Request Lock demand status OFF or ON

      OFF: Not requested

      ON: Requested

      Tech Tips

      EPB stands for electric parking brake

      FR Speed Signal Status FR speed signal status Normal or Stuck Normal -
      FL Speed Signal Status FL speed signal status Normal or Stuck Normal -
      RR Speed Signal Status RR speed signal status Normal or Stuck Normal -
      RL Speed Signal Status RL speed signal status Normal or Stuck Normal -
      Detailed Freeze DTC Information Code (INF Code) for DTC 0 to 65535 - Information code (INF Code) of DTC is displayed.
      Pull Up Resistor Pull up resistor status OFF or ON - -