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

      Tester Display Output Item Description Output Item Diagnostic Note
      ECU-EEPROM Electric parking brake ECU malfunction details are displayed OK or NG Electric parking brake ECU may have malfunction
      ECU-Output Circuit Electric parking brake ECU malfunction details are displayed OK or NG Electric parking brake ECU may have malfunction
      Actuator Over Current Electric parking brake actuator malfunction details are displayed OK or NG Actuator related (there may be motor lock, gear lock, stuck cable, etc.)
      Tension Sensor Tension sensor malfunction details are displayed OK or NG Actuator related (there may be gear or cable problem, actuator may be spinning freely, etc.)
      Energize to Actuator Time Out Electric parking brake actuator malfunction details are displayed OK or NG Actuator related (programmed control completion time may have been exceeded)
      Parking Brake Cable Malfunction Parking brake cable malfunction details are displayed OK or NG Actuator related (cable may be cut)
      Actuator Clutch Malfunction Actuator clutch malfunction details are displayed OK or NG Actuator related (actuator's clutch may have malfunction)
      Tension Sensor Tension sensor malfunction details are displayed OK or NG Tension sensor related
      Deceleration Sensor Output Yaw rate and acceleration sensor malfunction details are displayed OK or NG Yaw rate and acceleration sensor
      Deceleration Sensor Comparison Yaw rate and acceleration sensor malfunction details are displayed OK or NG Yaw rate and acceleration sensor
      Deceleration Sensor Yaw rate and acceleration sensor malfunction details are displayed OK or NG Yaw rate and acceleration sensor
      Invalid Low PWR Supply Voltage Power source voltage invalid details are displayed Enable or Disable -
      Invalid Deceleration Flg Yaw rate and acceleration 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 Tension Sens Zero Pt Tension sensor zero point calibration invalid details are displayed Enable or Disable -
      Invalid Brake Communication Skid control ECU communication invalid details are displayed Enable or Disable -
      Invalid Deceleration Commu Yaw rate and acceleration sensor malfunction details are displayed Enable or Disable -
      Invalid ECT Communication TCM 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 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 on P

      OFF: Shift lever is not on P
      N Position Details of shift lever position information input through CAN are displayed ON or OFF

      ON: Shift lever is on N

      OFF: Shift lever is not on N
      R Position Details of shift lever position information input through CAN are displayed ON or OFF

      ON: Shift lever is on R

      OFF: Shift lever is not on R
      D Position Details of shift lever position information input through CAN are displayed ON or OFF

      ON: Shift lever is on D

      OFF: Shift lever is not on D
      Brake Hold Mode Details of brake hold mode information input through CAN are displayed OFF / Hold / Release / 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 0 to 5 V -
      Tension Sensor 2 Value Tension sensor 2 value input information is displayed 0 to 5 V -
      Target Tension Target tension input information is displayed 0 to 5 kN -
      Tension Sensor1 Zero Pt Value Tension sensor 1 zero point calibration input information is displayed 0 to 5 V -
      Tension Sensor2 Zero Pt Value Tension sensor 2 zero point calibration input information is displayed 0 to 5 V -
      Motor Current Value Motor current zero point calibration completed input information is displayed -4.8877 to 49.18 A -
      Zero Point of Motor Current Motor current zero point calibration input information is displayed -6.7066 to 6.7058 A -
      ECU Power Voltage Electric parking brake ECU +B voltage input information is displayed 0 to 20 V -
      Lock1 Switch Lock switch 1 input information is displayed OFF / ON / Open / Short / Unknown -
      Lock2 Switch Lock switch 2 input information is displayed OFF / ON / Open / Short -
      +B Power Voltage +B power source input information is displayed Lo / Mid / Hi -
      Release Switch1 Release switch 1 input information is displayed OFF / ON / Open / Short -
      Release Switch2 Release switch 2 input information is displayed OFF / ON / Open / Short -
      IG Voltage Status IG power source input information is displayed ON or OFF -
      IG Status Engine 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.