ELECTRIC PARKING BRAKE SYSTEM FREEZE FRAME DATA


  1. FREEZE FRAME DATA


    • 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.

      Tester Display Measurement Item/Range Normal Condition Diagnostic Note
      ECU-EEPROM Parking brake ECU assembly malfunction details are displayed/ OK or NG OK Parking brake ECU assembly may have malfunction
      ECU-Output Circuit Parking brake ECU assembly malfunction details are displayed/ OK or NG OK Parking brake ECU assembly may have malfunction
      Actuator Over Current Parking brake with bracket actuator assembly malfunction details are displayed/ OK or NG OK Actuator related (there may be motor lock, gear lock, stuck cable, etc.)
      Tension Sensor Tension sensor malfunction details are displayed/ OK or NG OK Actuator related (there may be gear or cable problem, actuator may be spinning freely, etc.)
      Energize to Actuator Time Out Parking brake with bracket actuator assembly malfunction details are displayed/ OK or NG OK Actuator related (programmed control completion time may have been exceeded)
      Parking Brake Cable Malfunction Parking brake cable malfunction details are displayed/ OK or NG OK Actuator related (cable may be cut)
      Actuator Clutch Malfunction Actuator clutch malfunction details are displayed/ OK or NG OK Actuator related (actuator's clutch may have malfunction)
      Tension Sensor Tension sensor malfunction details are displayed/ OK or NG OK Tension sensor related
      Deceleration Sensor Output Acceleration sensor (Yaw rate sensor) malfunction details are displayed/ OK or NG OK Acceleration sensor (Yaw rate sensor)
      Deceleration Sensor Comparison Acceleration sensor (Yaw rate sensor) malfunction details are displayed/ OK or NG OK Acceleration sensor (Yaw rate sensor)
      Deceleration Sensor Acceleration sensor (Yaw rate sensor) malfunction details are displayed/ OK or NG OK Acceleration sensor (Yaw rate sensor)
      Invalid Low PWR Supply Voltage Power source voltage invalid details are displayed/ Enable or Disable - -
      Invalid Deceleration Flg Acceleration sensor (Yaw rate sensor) malfunction details are displayed/ Enable or Disable - -
      Invalid Vehicle Speed Speed sensor malfunction details are displayed/ Enable or Disable - -
      Invalid Tension Sensor Output Tension sensor output invalid details are displayed/ Enable or Disable - -
      Invalid Tension Sensor PWR Tension sensor power source invalid details are displayed/ Enable or Disable - -
      Invalid Tension Sensor Comp Tension sensor comparison invalid details are displayed/ Enable or Disable - -
      Invalid Brake Communication Skid control ECU assembly communication invalid details are displayed/ Enable or Disable - -
      Invalid Deceleration Commu Acceleration sensor (Yaw rate sensor) malfunction details are displayed/ Enable or Disable - -
      Invalid ECT Communication - - -
      Invalid HV Communication Power management control ECU communication invalid details are displayed/ Enable or Disable - -
      Invalid ACN Communication Air conditioning amplifier communication invalid details are displayed/ Enable or Disable - -
      Invalid J/B Communication Main body ECU (Multiplex network body ECU) communication invalid details are displayed/ Enable or Disable - -
      P Position Details of shift lever position information input through CAN are displayed/ ON or OFF

      ON: Shift lever is in P

      OFF: Shift lever is not in P

      -
      R Position Details of shift lever position information input through CAN are displayed/ ON or OFF

      ON: Shift lever is in R

      OFF: Shift lever is not in R

      -
      N Position Details of shift lever position information input through CAN are displayed/ ON or OFF

      ON: Shift lever is in N

      OFF: Shift lever is not in N

      -
      D Position Details of shift lever position information input through CAN are displayed/ ON or OFF

      ON: Shift lever is in D

      OFF: Shift lever is not in D

      -
      Brake Hold Mode Details of brake hold mode information input through CAN are displayed/ OFF, Hold, Release or EPB (*)

      OFF: Brake hold control is not operating

      Hold: Brake hold control is operating

      Release: Brake hold control is released

      EPB (*): After brake hold control operates for 3 minutes, electric parking brake is in lock condition

      EPB Lock On Request

      (*)

      Details of electric parking brake lock request information input through CAN are displayed/ ON or OFF

      ON: Request is made

      OFF: No request is made

      -
      Brake Hold Ready Details of brake hold standby information input through CAN are displayed/ ON or OFF

      ON: Request is made

      OFF: No request is made

      -
      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 -
      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 -
      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

      - -
      Tension Sensor2 Zero Pt Value

      Tension sensor 2 zero point calibration input information is displayed/

      Min.: 0.000 V

      Max.: 5.000 V

      - -
      Motor Current Value

      Motor current zero point calibration completed input information is displayed/

      Min.: -4.88 A

      Max.: 48.81 A

      - -
      Motor Zero Point Value

      Motor current zero point calibration input information is displayed/

      Min.: -6.70 A

      Max.: 6.70 A

      - -
      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 -
      Lock1 Switch Lock switch 1 input information is displayed/ OFF, ON, OPEN, SHORT or UNKNOWN - -
      Lock2 Switch Lock switch 2 input information is displayed/ OFF, ON, OPEN or SHORT - -
      +B Power Voltage +B power source input information is displayed/ Lo, Mid or Hi Hi -
      Release Switch1 Release switch 1 input information is displayed/ OFF, ON, OPEN or SHORT - -
      Release Switch2 Release switch 2 input information is displayed/ OFF, ON, OPEN or SHORT - -
      IG Voltage Status IG power source input information is displayed/ ON or OFF - -
      IG Status Power switch status is displayed/ ON or OFF - -
      Pull Up Pull up resistance change input information is displayed/ ON or OFF - -
      Zero Point of Tension Sensor Tension sensor zero point calibration completed information is displayed/ Comp or Uncomp - -
      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

      -
      Automatic Mode Auto mode status is displayed/ ON or OFF - -

      Tech Tips

      *: EPB stands for electric parking brake.