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ELECTRIC PARKING BRAKE SYSTEM DATA LIST / ACTIVE TEST

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  1. READ DATA LIST

    Tip:

    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 power switch off.

    2. Connect the GTS to the DLC3.

    3. Turn the power switch on (IG).

    4. Turn the GTS on.

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

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


      1. Chassis > Electric Parking Brake > Data List
        Tester Display Measurement Item Range Normal Condition Diagnostic Note
        Tension1 Voltage Tension sensor 1 voltage display

        min.: 0.000 V

        max.: 5.000 V

        		 0.5 to 4.5 V When not normal, tension sensor system may be malfunctioning.
        Tension2 Voltage Tension sensor 2 voltage display

        min.: 0.000 V

        max.: 5.000 V

        		 0.5 to 4.5 V When not normal, tension sensor system may be malfunctioning.
        Target Tension Target tension display

        min.: 0 N

        max.: 3571 N

        		 - -
        Zero Point of Tension1 Tension sensor 1 zero point calibration voltage display

        min.: 0.000 V

        max.: 5.000 V

        0.5 to 1.65 V

        (after calibrating zero point)

        		 When not normal, tension sensor system may be malfunctioning.
        Zero Point of Tension2 Tension sensor 2 zero point calibration voltage display

        min.: 0.000 V

        max.: 5.000 V

        0.5 to 1.65 V

        (after calibrating zero point)

        		 When not normal, tension sensor system may be malfunctioning.
        Motor Voltage Monitor Motor voltage display

        min.: 0 V

        max.: 5 V

        		 - -
        Motor Current Value Motor current actual value display

        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.
        Zero Point of Motor Current Motor current zero point calibration display

        min.: -6.70 A

        max.: 6.70 A

        		 -1.63 to 1.63 A When not normal, motor system may be malfunctioning.
        ECU Voltage Monitor +B power source voltage display

        min.: 0.00 V

        max.: 20.00 V

        		 11 to 14 V When not normal, +B input circuit may be malfunctioning or auxiliary battery voltage may have decreased
        +B Voltage Value Electric parking brake motor power source information display Lo, Mid or Hi Hi -
        Tension Sensor Voltage Tension sensor power source voltage display

        min.: 0.000 V

        max.: 5.000 V

        		 4.75 to 5.0 V When not normal, tension sensor power supply circuit may be malfunctioning.
        Lock1 Control Status Routine lock output information display ON or OFF

        OFF: Routine lock not output

        ON: Routine lock output

        		 -
        Lock2 Control Status Dynamic parking brake output information display ON or OFF

        OFF: Dynamic parking brake control off

        ON: Dynamic parking brake control on

        		 -
        Lock3 Control Status Re-lock output information display ON or OFF

        OFF: Re-lock not output

        ON: Re-lock is output

        		 -
        Lock4 Control Status Release position lock output information display ON or OFF

        OFF: Release position lock not output

        ON: Release position lock is output

        		 -
        Lock5 Control Status Maximum lock output information display ON or OFF

        OFF: Maximum lock not output

        ON: Maximum lock is output

        		 -
        Lock6 Control Status Forced re-lock output information display ON or OFF

        OFF: Forced re-lock not output

        ON: Forced re-lock is output

        		 -
        Release1 Control Status Release output information display ON or OFF

        OFF: Release not output

        ON: Release is output

        		 -
        PKB Lock Status Lock status display ON or OFF

        ON: Locked

        OFF: Released

        		 -
        PKB Release Status Release status display ON or OFF

        ON: Locked

        OFF: Released

        		 -
        PKB Unknown Status Parking brake status unknown display ON or OFF OFF: Locked or released ON: except locked or released
        PKB Lock Permit Parking brake lock control permission display ON or OFF - -
        PKB Release Permit Parking brake release control permission display ON or OFF - -
        Dynamic Parking Permit Dynamic parking control permission display ON or OFF - -
        Auto Mode Memory Previous auto mode operation memory availability display ON or OFF - -
        Auto Ready Status Auto control permission display ON or OFF - -
        Invalid Tension Sensor Output Tension sensor output invalid display Enable or Disable Enable -
        Invalid Tension Sensor PWR Tension sensor power source invalid display Enable or Disable Enable -
        Invalid Tension Sensor Comp Tension sensor comparison invalid display Enable or Disable Enable -
        Low Tension operation Counter Low tension operation counter

        min.: 0 Times

        max. : 16777215 Times

        		 - -
        Number of Trouble Codes Number of DTCs recorded

        min.: 0

        max. : 25

        		 0 -
        Middle Tension operation Counter Middle tension operation counter

        min.: 0 Times

        max. : 65535 Times

        		 - -
        High Tension operation Counter High tension operation counter

        min.: 0 Times

        max. : 65535 Times

        		 - -
        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 Error

        • There is no communication with ECM. As a result, "Error" is displayed permanently.

        • This item is displayed but there is no problem.
        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

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

        • There is no communication with engine stop and start ECU.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".

        Tip:

        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 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 stopped: 1 km/h (1 mph) or less

        When driving: 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
        Indoor Temperature Interior temperature -6.50 to 57.25°C (20.3 to 135°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
        Stop Light Switch Stop light switch assembly input signal 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

        Tip:

        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 "Unknown" is displayed, 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 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
        Tip:

        EPB stands for electric parking brake
        EPB Lock Request Lock demand status OFF or ON

        OFF: Not requested

        ON: Requested
        Tip:

        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 -
        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

        		 -
        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 warning light / yellow (minor malfunction) output signal OFF or ON

        OFF: Brake warning light / yellow (minor malfunction) turns off

        ON: Brake warning light / yellow (minor malfunction) illuminates
        Tip:

        EPB stands for electric parking brake
        AUTO Indicator AUTO indicator light output signal OFF or ON OFF

        • AUTO indicator light is not installed, so always displays "OFF".

        • This item is displayed but there is no problem.
        Meter ECU Connection Cancel Request Completes communication with the combination meter assembly and stops transmission OFF or ON

        OFF: Not complete

        ON: Complete

        		 -










































































  2. PERFORM ACTIVE TEST

    Tip:

    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 power switch off.

    2. Connect the GTS to the DLC3.

    3. Turn the power switch on (IG).

    4. Turn the GTS on.

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

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


      1. Chassis > Electric Parking Brake > Active Test
        Tester Display Measurement Item Control Range Diagnostic Note
        Auto Mode AUTO (shift-linked) mode ON or OFF

        • Vehicle stopped

        • Power switch on (IG)
        EPB Warning Light Brake warning light / yellow (minor malfunction) ON or OFF

        • Vehicle stopped

        • Power switch on (IG)

        Tip:

        EPB stands for electric parking brake
        PKB Light Parking brake indicator light (red) ON or OFF

        • Vehicle stopped

        • Power switch on (IG)
        PKB Lock Control Parking brake lock control ON or OFF

        • Vehicle stopped

        • Power switch on (IG)
        PKB Release Control Parking brake release control ON or OFF

        • Vehicle stopped

        • Power switch on (IG)