ELECTRIC PARKING BRAKE SYSTEM DATA LIST / ACTIVE TEST


  1. READ DATA LIST

    Tech Tips

    Using the GTS to read the Data List allows the values or states of switches, sensors, actuators and other items to be read without removing any parts. This non-intrusive inspection can be very useful because intermittent conditions or signals may be discovered before parts or wiring is disturbed. Reading the Data List information early in troubleshooting is one way to save diagnostic time.

    Note

    In the table below, the values listed under "Normal Condition" are reference values. Do not depend solely on these reference values when deciding whether a part is faulty or not.


    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/EPB / Data List.

    6. Read the Data List according to the display on the GTS.


      Chassis > ABS/VSC/TRC/EPB > Data List
      Tester Display Measurement Item Range Normal Condition Diagnostic Note
      Stop Light SW Stop light switch assembly ON or OFF

      ON: Brake pedal depressed

      OFF: Brake pedal released

      -
      Deceleration Sensor Acceleration sensor

      Min.: -18.525 m/s2

      Max.: 18.387 m/s2

      - During deceleration/acceleration: Changes continuously
      Zero Point of Decele Memorized zero value

      Min.: -25.10 m/s2

      Max.: 24.90 m/s2

      - -
      Deceleration Sensor2 Acceleration sensor 2

      Min.: -18.525 m/s2

      Max.: 18.387 m/s2

      - During deceleration/acceleration: Changes continuously
      Zero Point of Decele2 Memorized zero value

      Min.: - 25.10 m/s2

      Max.: 24.90 m/s2

      - -
      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
      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

      -
      Deceleration Open Acceleration sensor open detection Error or Normal

      Error: Momentary interruption

      Normal: Normal

      -
      Number of DTC Number of DTCs recorded

      Min.: 0

      Max.: 255

      - -
      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

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

      Error: Momentary interruption

      Normal: Normal

      -
      A/C ECU Communication Open Air conditioning amplifier assembly communication open detection Error or Normal

      Error: Momentary interruption

      Normal: Normal

      -
      Navigation ECU Communication Open Radio receiver assembly communication open detection Error or Normal

      Error: Momentary interruption

      Normal: Normal

      -
      Stop and Start ECU Communication Open Engine stop and start ECU communication open detection Error or Normal

      Error: Momentary interruption

      Normal: Normal

      -
      Vehicle Speed (Control Value) Vehicle speed (control value)

      Min.: 0.0 km/h (0.0 MPH)

      Max.: 326.4 km/h (202.8 MPH)

      - -
      ECU +B1 Voltage Skid control ECU (brake actuator assembly) +B1 voltage 0.00 to 20.00 V 11 to 14 V -
      ECU +B2 Voltage Skid control ECU (brake actuator assembly) +B2 voltage 0.00 to 20.00 V 11 to 14 V -
      RH Actuator Motor Input Voltage Parking brake motor RH (parking brake actuator assembly RH) input voltage 0.00 to 20.00 V - -
      RH Actuator Motor +Terminal Voltage Parking brake motor RH (parking brake actuator assembly RH) positive (+) terminal side voltage 0.00 to 20.00 V - -
      RH Actuator Motor -Terminal Voltage Parking brake motor RH (parking brake actuator assembly RH) negative (-) terminal side voltage 0.00 to 20.00 V - -
      LH Actuator Motor Input Voltage Parking brake motor LH (parking brake actuator assembly LH) input voltage 0.00 to 20.00 V - -
      LH Actuator Motor +Terminal Voltage Parking brake motor LH (parking brake actuator assembly LH) positive (+) terminal side voltage 0.00 to 20.00 V - -
      LH Actuator Motor -Terminal Voltage Parking brake motor LH (parking brake actuator assembly LH) negative (-) terminal side voltage 0.00 to 20.00 V - -
      Indoor Temperature Interior temperature -6.50 to 57.25°C (20.30 to 135.00°F) - When displayed value differs from actual interior temperature, air conditioning system and CAN communication system may be malfunctioning
      Ambient Temperature Ambient temperature -40 to 50°C (-40 to 122°F) - When displayed value differs from actual ambient temperature, air conditioning system and CAN communication system may be malfunctioning
      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 not normal, 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 - -
      Shift Position Position of shift lever P, N, R, D or Unknown

      P: Shift lever in P

      N: Shift lever in N

      R: Shift lever in R

      D: Shift lever 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 voltage is not input to skid control ECU (brake actuator assembly)

      ON: IG power source voltage is input to skid control ECU (brake actuator assembly)

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

      OFF: Lock switch off

      ON: Lock switch on

      When not normal, 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 not normal, 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 not normal, 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 not normal, 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 Brake hold control mode 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 -
      RH Actuator Current Status Parking brake actuator assembly RH monitoring current condition Inval or Valid Valid -
      LH Actuator Current Status Parking brake actuator assembly LH monitoring current condition Inval or Valid Valid -
      RH Actuator Nut Stroke Parking brake actuator assembly RH nut stroke value 0.000 to 8.160 mm (0.000 to 0.321 in.) - -
      LH Actuator Nut Stroke Parking brake actuator assembly LH nut stroke value 0.000 to 8.160 mm (0.000 to 0.321 in.) - -
      RH Actuator Motor Actual Current Parking brake motor RH (parking brake actuator assembly RH) current value -5.0362 to 50.5000 A - -
      RH Actuator Motor Adjustment Current Parking brake motor RH (parking brake actuator assembly RH) current calibration value -6.9690 to 6.9140 A - -
      RH Actuator 0 load Current Parking brake actuator assembly RH current value with no load -5.0362 to 50.5000 A - -
      LH Actuator Motor Actual Current Parking brake motor LH (parking brake actuator assembly LH) current value -5.0362 to 50.5000 A - -
      LH Actuator Motor Adjustment Current Parking brake motor LH (parking brake actuator assembly LH) current calibration value -6.9690 to 6.9140 A - -
      LH Actuator 0 load Current Parking brake actuator assembly LH current value with no load -5.0362 to 50.5000 A - -
      Counter of IG ON After EPB Control Cancel Number of times the engine switch was turned on (IG) after EPB control was cancelled 0 to 255 Times - -
      RH Actuator Status Parking brake actuator assembly RH condition Default, Lock Standby, Lock, Lock Dynamic, Release Standby, Release, Lock Faulty, Unexpected, Lock Dynamic Standby, Release Dynamic Standby, Lock Dynamic Faulty, Lock1, Lock2, Lock3, Lock4, Lock5, Lock6, Lock7, Release1, Release2 or Release3 - -
      LH Actuator Status Parking brake actuator assembly LH condition Default, Lock Standby, Lock, Lock Dynamic, Release Standby, Release, Lock Faulty, Unexpected, Lock Dynamic Standby, Release Dynamic Standby, Lock Dynamic Faulty, Lock1, Lock2, Lock3, Lock4, Lock5, Lock6, Lock7, Release1, Release2 or Release3 - -
      RH Actuator Motor Current Differential Differences in parking brake motor RH (parking brake actuator assembly RH) monitoring current -1.008 to 0.945 A - -
      LH Actuator Motor Current Differential Differences in parking brake motor LH (parking brake actuator assembly LH) monitoring current -1.008 to 0.945 A - -
      Auto Mode AUTO (shift-linked) mode permission status OFF or ON

      OFF: Manual mode

      ON: AUTO (shift-linked) mode

      -
      Dynamic PKB Mode Dynamic parking brake operation status OFF or ON

      OFF: Dynamic parking brake is not operating

      ON: Dynamic parking brake is operating

      -
      Permission of Interlocking Shift AUTO (shift-linked) mode permission status OK or NG - -
      Permission of Interlocking Brake Brake-linked permission status OK or NG - -
      Permission of RH Interlocking PKB Lock Parking brake actuator assembly RH parking brake lock control permission status OK or NG - -
      Permission of RH Interlocking PKB Release Parking brake actuator assembly RH parking brake release control permission status OK or NG - -
      Permission of RH Interlocking Dynamic PKB Parking brake actuator assembly RH dynamic parking control permission status OK or NG - -
      Permission of RH Interlocking PKB Full Release Parking brake actuator assembly RH parking brake full release permission status OK or NG - -
      Permission of LH Interlocking PKB Lock Parking brake actuator assembly RH parking brake lock control permission status OK or NG - -
      Permission of LH Interlocking PKB Release Parking brake actuator assembly RH parking brake release control permission status OK or NG - -
      Permission of LH Interlocking Dynamic PKB Parking brake actuator assembly RH dynamic parking control permission status OK or NG - -
      Permission of LH Interlocking PKB Full Release Parking brake actuator assembly LH parking brake full release permission status OK or NG - -
      Fade Status Fade status OFF or ON - -
      Counter of EPB Control Cancel Number of times EPB control was cancelled 0 to 7 Times -

      Tech Tips

      EPB stands for electric parking brake.

      Parking Brake Light Parking brake indicator light (red) output signal OFF, Light or Blink

      OFF: Parking brake indicator light (red) turns off

      Light: Parking brake indicator light (red) illuminates

      Blink: Parking brake indicator light (red) flashes

      -
      EPB Warning Light Brake system warning light (yellow indicator) output signal OFF or ON

      OFF: Brake system warning light (yellow indicator) turns off

      ON: Brake system warning light (yellow indicator) illuminates

      -
      AUTO Indicator AUTO indicator light output signal OFF or ON

      OFF: AUTO (shift-linked) mode OFF

      Normal: AUTO (shift-linked) mode ON

      -
      Meter ECU Connection Cancel Request Meter ECU connection cancel request status OFF or ON - -
  2. PERFORM ACTIVE TEST

    Tech Tips

    Using the GTS to perform Active Tests allows relays, VSVs, actuators and other items to be operated without removing any parts. This non-intrusive functional inspection can be very useful because intermittent operation may be discovered before parts or wiring is disturbed. Performing Active Tests early in troubleshooting is one way to save diagnostic time. Data List information can be displayed while performing Active Tests.


    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/EPB / Active Test.

    6. According to the display on the GTS, perform the Active Test.


      Chassis > ABS/VSC/TRC/EPB > Active Test
      Tester Display Measurement Item Control Range Diagnostic Note
      Auto Mode AUTO (shift-linked) mode ON or OFF
      • Vehicle stopped

      • Engine switch on (IG)

      EPB Warning Light Brake system warning light (yellow) ON or OFF
      • Vehicle stopped

      • Engine switch on (IG)

      Tech Tips

      EPB stands for electric parking brake.

      PKB Light Parking brake indicator light (red) ON or OFF
      • Vehicle stopped

      • Engine switch on (IG)

      • Parking brake released

      PKB Lock Control Parking brake lock control ON or OFF
      • Vehicle stopped

      • Engine switch on (IG)

      PKB Release Control Parking brake release control ON or OFF
      • Vehicle stopped

      • Engine switch on (IG)

      PKB Full Release Control Parking brake full release control ON or OFF
      • Vehicle stopped

      • Engine switch on (IG)