ELECTRIC PARKING BRAKE SYSTEM DATA LIST / ACTIVE TEST


  1. READ DATA LIST

    Tech Tips

    Using the intelligent tester 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 ignition switch off.

    2. Connect the intelligent tester to the DLC3.

    3. Turn the ignition switch to ON.

    4. Turn the tester on.

    5. Enter the following menus: Chassis / Electric Parking Brake / Data List.

    6. Check the values by referring to the table below.

      Electric Parking Brake
      Tester Display Measurement Item/Range Normal Condition Diagnostic Note
      Tension1 Voltage

      Tension sensor 1 voltage/

      Min.: 0 V

      Max.: 5 V

      		 0.5 to 4.5 V -
      Target Tension

      Target tension/

      Min.: 0 N

      Max.: 3571 N

      		 0 to 1240 N -
      Motor Current Value

      Motor current actual value/

      Min.: -4.8877 A

      Max.: 49.18 A

      		 - -
      Motor Rotate Speed

      Motor rotation speed/

      Min.: -32768 rpm

      Max.: 32767 rpm

      		 -30000 to 30000 rpm -
      Stop Light Switch

      Stop light switch input information/

      ON or OFF

      ON: Brake pedal depressed

      OFF: Brake pedal released

      		 -
      EPB* Switch State

      Electric parking brake switch input information/

      Idle, Apply, Release, Lock1, Lock2, Releas1, Releas2, Short or Invalid

      		 Not Short or Invalid -
      FR Wheel Speed

      Front wheel RH speed/

      Min.: 0 km/h (0 mph)

      Max.: 326.4 km/h (202 mph)

      		 - Actual wheel speed is displayed.
      FL Wheel Speed

      Front wheel LH speed/

      Min.: 0 km/h (0 mph)

      Max.: 326.4 km/h (202 mph)

      		 - Actual wheel speed is displayed.
      RR Wheel Speed

      Rear wheel RH speed/

      Min.: 0 km/h (0 mph)

      Max.: 326.4 km/h (202 mph)

      		 - Actual wheel speed is displayed.
      RL Wheel Speed

      Rear wheel LH speed/

      Min.: 0 km/h (0 mph)

      Max.: 326.4 km/h (202 mph)

      		 - Actual wheel speed is displayed.
      Vehicle Speed

      Vehicle speed/

      Min.: 0 km/h (0 mph)

      Max.: 326.4 km/h (202 mph)

      		 - Actual vehicle speed is displayed.
      Deceleration Sensor 1

      G sensor 1 input/

      Min.: -18.3 m/s2

      Max.: 18.3 m/s2

      		 - Continuously changes when the vehicle is being driven.
      Forward and Rearward G

      Yaw rate sensor input/

      Min.: -18.3 m/s2

      Max.: 18.3 m/s2

      		 - Continuously changes when the vehicle is being driven.
      Zero Point of Deceleration Sensor

      Yaw rate sensor zero point calibration/

      Min.: -4.5952 m/s2

      Max.: 4.5952 m/s2

      		 - -
      P Position

      Shift lever P position input information/

      ON or OFF

      ON: Shift lever in P

      OFF: Shift lever not in P

      		 -
      N Position

      Shift lever N position input information/

      ON or OFF

      ON: Shift lever in N

      OFF: Shift lever not in N

      		 -
      R Position

      Shift lever R position input information/

      ON or OFF

      ON: Shift lever in R

      OFF: Shift lever not in R

      		 -
      D Position

      Shift lever D position input information/

      ON or OFF

      ON: Shift lever in D

      OFF: Shift lever not in D

      		 -
      ECU Voltage Monitor

      ECU (+B) voltage monitor/

      Min.: 0 V

      Max.: 20 V

      		 10 to 16 V -
      IG Status

      Engine switch or ignition switch information/

      ON or OFF

      ON: Ignition switch ON

      OFF: Ignition switch ACC or off

      		 -
      IG Switch

      IG power source information/

      ON or OFF

      ON: IG power source input into electric parking brake ECU

      OFF: IG power source not input into electric parking brake ECU

      		 -
      Parking Brake Light

      PARK warning light output information/

      OFF, LIGHT or BLINK

      		 - -
      EPB* Warning Light

      Brake system warning light (yellow indicator) output information/

      OFF, LIGHT or BLINK

      		 - -
      Communication Brake System

      Communication with skid control ECU/

      ON or OFF

      ON: Ignition switch ON

      OFF: Ignition switch off

      		 -
      Communication G Sensor

      Communication with yaw rate sensor/

      ON or OFF

      ON: Ignition switch ON

      OFF: Ignition switch off

      		 -
      Communication ECT

      Communication with ECM/

      ON or OFF

      ON: Ignition switch ON

      OFF: Ignition switch off

      		 -
      Communication Main Body

      Communication with main body ECU/

      ON or OFF

      ON: Ignition switch ON

      OFF: Ignition switch off

      		 -
      PKB Lock Status

      Parking brake lock status/

      ON or OFF

      ON: Lock

      OFF: Not locked

      		 -
      PKB Release Status

      Parking brake release status/

      ON or OFF

      ON: Release

      OFF: Not released

      		 -
      PKB Unknown Status

      Parking brake status unknown/

      ON or OFF

      		 - -
      Deceleration Sensor Output

      Yaw rate sensor or G sensor output malfunction/

      OK or NG

      		 OK -
      Deceleration Sensor1

      Yaw rate sensor or G sensor malfunction/

      OK or NG

      		 OK -
      FR Speed Sensor Open/Short

      Front speed sensor RH open, short malfunction/

      OK or NG

      		 OK -
      FL Speed Sensor Open/Short

      Front speed sensor LH open, short malfunction/

      OK or NG

      		 OK -
      RR Speed Sensor Open/Short

      Rear speed sensor RH open, short malfunction/

      OK or NG

      		 OK -
      RL Speed Sensor Open/Short

      Rear speed sensor LH open, short malfunction/

      OK or NG

      		 OK -
      FR Speed Sensor PWR Source

      Front speed sensor RH power source malfunction/

      OK or NG

      		 OK -
      FL Speed Sensor PWR Source

      Front speed sensor LH power source malfunction/

      OK or NG

      		 OK -
      RR Speed Sensor PWR Source

      Rear speed sensor RH power source malfunction/

      OK or NG

      		 OK -
      RL Speed Sensor PWR Source

      Rear speed sensor LH power source malfunction/

      OK or NG

      		 OK -
      Brake Communication Failure

      Skid control ECU communication malfunction/

      OK or NG

      		 OK -
      Deceleration Commu Failure

      Yaw rate sensor communication malfunction/

      OK or NG

      		 OK -
      ECT Communication Failure

      ECM communication malfunction/

      OK or NG

      		 OK -
      Temperature Sensor Apply Value

      Temperature sensor apply (lock) value/

      Min.: 0 mV

      Max.: 5000 mV

      		 - -
      Temperature Sensor Release Value

      Temperature sensor release value/

      Min.: 0 mV

      Max.: 5000 mV

      		 - -
      EPB* Control State

      Electric parking brake control state/

      No cntl, St apply, St release or Dy apply

      		 - -
      G Sensor Electrical Failure

      Yaw rate sensor malfunction/

      Normal or Failure

      		 Normal -
      G Sensor Plausibility Failure

      Yaw rate sensor malfunction/

      Normal or Failure

      		 Normal -
      G Sensor Selftest Failure

      Yaw rate sensor malfunction/

      Normal or Failure

      		 Normal -
      Over Voltage Detected

      Overvoltage detected/

      Normal or Failure

      		 Normal Displays the history
      Under Voltage Detected

      Undervoltage detected/

      Normal or Failure

      		 Normal Displays the history
      Motor Activation Permission Failure

      Motor activation permission failure/

      Normal or Failure

      		 Normal -
      Unlocatable Switch Failure

      Electric parking brake switch failure/

      Normal or Failure

      		 Normal -
      Switch Disturbance Failure

      Electric parking brake switch failure/

      Normal or Failure

      		 Normal -
      Short Circuit Switch Failure

      Short to ground in electric parking brake switch circuit/

      Normal or Failure

      		 Normal -
      Switch Single Failure

      Electric parking brake switch single failure/

      Normal or Failure

      		 Normal -
      Clutch Stroke Sensor Electrical Failure

      Brake pedal stroke sensor (Clutch pedal stroke sensor) failure/

      Normal or Failure

      		 Normal -
      Clutch Stroke Sensor Plausibility Failure

      Brake pedal stroke sensor (Clutch pedal stroke sensor) failure/

      Normal or Failure

      		 Normal -
      Clutch Stroke Sensor Disturbance Failure

      Brake pedal stroke sensor (Clutch pedal stroke sensor) failure/

      Normal or Failure

      		 Normal -
      N Position Switch Failure

      Park/neutral position switch failure/

      Normal or Failure

      		 Normal -
      R Position Switch Failure

      Back-up light switch failure/

      Normal or Failure

      		 Normal -
      ECU Hardware Type

      Brake control system type/

      ABS or VSC

      		 - -
      Transmission Variant

      Transmission variant/

      No code, AT/CVT or MT

      		 - -
      Handle Position Variant

      Steering wheel location variant/

      No code, LHD or RHD

      		 - -
      EPB* Level Ground Activation Counter

      Number of times electric parking brake activated on level surface/

      Min.: 0 Times

      Max.: 16777215 Times

      		 - -
      Number of Trouble Codes

      Number of stored DTCs/

      Min.: 0

      Max.: 255

      		 - -
      EPB* Gentle Ascent Activation Counter

      Number of times electric parking brake activated on gentle slope/

      Min.: 0 Times

      Max.: 16777215 Times

      		 - -
      EPB* Steep Gradient Activation Counter

      Number of times electric parking brake activated on steep slope/

      Min.: 0 Times

      Max.: 16777215 Times

      		 - -
      Clutch State

      Clutch state/

      Dispressed, Pressed or Unknown

      		 - -
      Full Release Mode

      Full release mode/

      Not full or Full

      		 Not full

      Full: Full release mode

      Not full: Normal mode
      Clutch Stroke Sensor Disturbance Counter

      Brake pedal stroke sensor (Clutch pedal stroke sensor) disturbance counter/

      Min.: 0

      Max.: 10

      		 - -
      SKS1 Raw Value of AD

      Brake pedal stroke sensor (Clutch pedal stroke sensor)(SKS1) voltage/

      Min.: 0 V

      Max.: 5 V

      		 0.3 to 4.7 V -
      SKS2 Raw Value of AD

      Brake pedal stroke sensor (Clutch pedal stroke sensor)(SKS2) voltage/

      Min.: 0 V

      Max.: 5 V

      		 0.3 to 4.7 V -
      SKS1 Calibration Value of Zero Point

      Brake pedal stroke sensor (Clutch pedal stroke sensor)(SKS1) zero point calibration value/

      Min.: 0 V

      Max.: 5 V

      		 0.43 to 1.6 V -
      SKS2 Calibration Value of Zero Point

      Brake pedal stroke sensor (Clutch pedal stroke sensor)(SKS2) zero point calibration value/

      Min.: 0 V

      Max.: 5 V

      		 3.2 to 4.7 V -
      Neutral Position SW

      Park/neutral position switch signal/

      Lo or Hi

      		 - -
      Reverse Position SW

      Back-up light switch signal/

      Lo or Hi

      		 - -
      VARTRM1

      Transmission variant/

      MT, AT, CVT, MMT, SMT or HV-AT

      		 - -
      STRG_WHL

      Steering wheel position/

      Left or Right

      		 - -
      Yaw G Sensor Installation Info

      Yaw rate sensor installation information/

      ON or OFF

      		 - -
      NE1

      Engine speed/

      Min.: 0 rpm

      Max.: 51199.218 rpm

      		 - Actual engine speed is displayed.
      Actual Torque Output

      Real engine torque/

      Min.: 0 Nm

      Max.: 2047.968 Nm

      		 - -
      Open Rate of Acceleration

      Percentage of acceleration pedal opening angle/

      Min.: 0%

      Max.: 127.5%

      		 - -
      Engine Fail

      Engine failure/

      ON or OFF

      		 OFF -
      TC Terminal State

      TC terminal state/

      ON or OFF

      		 - -
      Starter Signal

      Starter signal/

      ON or OFF

      		 - -
      Test Mode

      Test mode state/

      ON or OFF

      		 - -
      STP Switch Failure Signal

      Stop light switch failure signal/

      ON or OFF

      		 OFF -
      Tension Value

      Tension value signal/

      Min.: 0 N

      Max.: 3571 N

      		 0 to 2000 N -

      Tech Tips

      *: Stands for electric parking brake.

  2. PERFORM ACTIVE TEST

    Tech Tips

    Using the intelligent tester 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. Connect the intelligent tester to the DLC3.

    2. Turn the ignition switch to ON.

    3. Turn the tester on.

    4. Enter the following menus: Chassis / Electric Parking Brake / Active Test.

    5. Perform the Active Test by referring to the table below.

      Electric Parking Brake
      Tester Display Test Part Control Range
      EPB* Warning Light Brake system warning light (Yellow indicator) ON or OFF
      PKB Light PARK warning light ON or OFF
      PKB Release1 Electric parking brake release ON (Release)
      PKB Lock1 Electric parking brake lock ON (Lock)
      Not Avail Display Multi-information display's "PARKING BRAKE INOPERABLE" display ON or OFF
      Check Display Multi-information display's "CHECK PARKING BRAKE SYSTEM" display ON or OFF
      Overheat Display Multi-information display's "PARKING BRAKE OVERHEAT" display ON or OFF
      Release Display Multi-information display's "RELEASE PARKING BRAKE" display ON or OFF
      Full Release Mode De-Activation Parking brake cable full release mode de-activation -
      Full Release Mode Activation Parking brake cable full release mode activation -

      Tech Tips

      *: Stands for electric parking brake.