ELECTRONICALLY CONTROLLED 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. Warm up the engine.

    2. Turn the engine switch off.

    3. Connect the GTS to the DLC3.

    4. Turn the engine switch on (IG).

    5. Turn the GTS on.

    6. Enter the following menus: Chassis / ABS/VSC/TRC / Data List.

    7. According to the display on the GTS, read the Data List.

      ABS/VSC/TRC
      Tester Display Measurement Item/Range Normal Condition Diagnostic Note
      ABS Warning Light ABS warning light / ON or OFF

      ON: Warning light ON

      OFF: Warning light OFF

      		 -
      Brake Warning Light Brake warning light / red (malfunction) / ON or OFF

      ON: Warning light ON

      OFF: Warning light OFF

      		 -
      Electronically Controlled Brake System Warning Light Brake warning light / yellow (minor malfunction) / ON or OFF

      ON: Warning light ON

      OFF: Warning light OFF

      		 -
      Buzzer Skid control buzzer / ON or OFF

      ON: Buzzer ON

      OFF: Buzzer OFF

      		 -
      Stop Light SW Stop light switch / ON or OFF

      ON: Brake pedal depressed

      OFF: Brake pedal released

      		 -
      Parking Brake SW Parking brake switch / ON or OFF

      ON: Parking brake applied

      OFF: Parking brake released

      		 -
      TRC(TRAC)/VSC OFF SW VSC OFF switch / ON or OFF

      ON: Switch ON

      OFF: Switch OFF

      		 -
      Reservoir Warning SW Brake fluid level warning switch / ON or OFF

      ON: Reservoir level normal

      OFF: Reservoir level low

      		 -
      Main Idle SW Main idle switch / ON or OFF

      ON: Accelerator pedal released

      OFF: Accelerator pedal depressed

      		 -
      Gear Position Gear position information / P,N, R, 1st-8th, Fail, Not R Actual gear position -
      Shift Lever Position Shift lever position information / P,N, R, D/M, 1st-6th/B, Fail Actual shift lever position -
      Shift Information Shift information / ON or OFF

      ON: During gear change

      OFF: Not during gear change

      		 -
      Inspection Mode Inspection mode / Other or Inspect

      Other: Normal mode

      Inspect: Inspection mode

      		 -
      Number of IG ON(Inspection) Number of engine switch on (IG) after entering the inspection mode / min.: 0, max.: 255 - -
      Master Cylinder Sensor Master cylinder pressure sensor 1 reading / min.: 0.00 V, max.: 5.00 V When brake pedal is released: 0.30 to 0.90 V Reading increases when brake pedal is depressed
      Voltage of M/C Master cylinder pressure sensor 1 reading / min.: -2.50 V, max.: 2.49 V When brake pedal is released: 0.30 to 0.90 V Reading increases when brake pedal is depressed
      Master Cylinder Sensor2 Master cylinder pressure sensor 2 reading / min.: 0.00 V, max.: 5.00 V When brake pedal is released: 0.30 to 0.90 V Reading increases when brake pedal is depressed
      Voltage of M/C2 Master cylinder pressure sensor 2 reading / min.: -2.50 V, max.: 2.49 V When brake pedal is released: 0.30 to 0.90 V Reading increases when brake pedal is depressed
      Stroke Sensor Stroke sensor / min.: 0.00 V, max.: 5.00 V When brake pedal is released: 0.70 to 1.30 V -
      Voltage of Stroke Sensor Voltage of stroke sensor / min.: -2.50 V, max.: 2.49 V When brake pedal is released: 0.70 to 1.30 V -
      Stroke Sensor2 Stroke sensor 2 / min.: 0.00 V, max.: 5.00 V When brake pedal is released: 3.70 to 4.30 V -
      Voltage of Stroke Sensor2 Voltage of stroke sensor 2 / min.: -2.50 V, max.: 2.49 V When brake pedal is released: 0.70 to 1.30 V -
      Accumulator Sensor Accumulator pressure sensor / min.: 0.00 V, max.: 5.00 V Specified value: 2.60 to 3.80 V -
      Deceleration Sensor

      Acceleration sensor 1 reading / min.: -18.525 m/s2, max.: 18.387 m/s2

      Approximately -1.274 to 1.274 m/s2while stationary

      		 Reading changes when vehicle is bounced
      Zero Point of Decele

      Memorized zero value / min.: -25.10 m/s2, max.: 24.90 m/s2

      		- -
      Deceleration Sensor2

      Acceleration sensor 2 reading / min.: -18.525 m/s2, max.: 18.387 m/s2

      Approximately -1.274 to 1.274 m/s2while stationary

      		 Reading changes when vehicle is bounced
      Zero Point of Decele2

      Memorized zero value / min.: -25.10 m/s2, max.: 24.90 m/s2

      		- -
      Yaw Rate Sensor Yaw rate sensor 1 / min.: -128°/s, max.: 127°/s - -
      Zero Point of Yaw Rate Memorized zero value / min.: -128°, max.: 127° - -
      Yaw Rate Sensor2 Yaw rate sensor 2 / min.: -128°/s, max.: 127°/s - -
      Zero Point of Yaw Rate2 Memorized zero value / min.: -128°/s, max.: 127°/s - -
      Steering Angle Sensor Steering angle sensor / min.: -3276.8°, max.: 3276.7°

      Left turn: Increase

      Right turn: Decrease

      		 -
      Zero Point of Steering Angle Memorized zero value / min.: -3276.8°, max.: 3276.7° - -
      FR W/C Sensor Front wheel cylinder pressure sensor RH / min.: 0.00 V, max.: 5.00 V When brake pedal is released: 0.30 to 0.90 V -
      FL W/C Sensor Front wheel cylinder pressure sensor LH / min.: 0.00 V, max.: 5.00 V When brake pedal is released: 0.30 to 0.90 V -
      RR W/C Sensor Rear wheel cylinder pressure sensor RH / min.: 0.00 V, max.: 5.00 V When brake pedal is released: 0.30 to 0.90 V -
      RL W/C Sensor Rear wheel cylinder pressure sensor LH / min.: 0.00 V, max.: 5.00 V When brake pedal is released: 0.30 to 0.90 V -
      Lateral G

      Lateral G / min.: -25.10 m/s2, max.: 24.90 m/s2

      		- -
      Forward and Rearward G

      Forward and rearward G / min.: -25.10 m/s2, max.: 24.90 m/s2

      		- -
      Yaw Rate Value Yaw rate value / min.: -128°/s, max.: 127°/s - -
      Steering Angle Value Steering angle value / min.: -3276.8°, max.: 3276.7° - -
      Slip Indicator Light Slip indicator light / ON or OFF

      ON: Indicator light ON

      OFF: Indicator light OFF

      		 -
      FR Wheel Speed Front wheel speed sensor RH reading / min.: 0 km/h (0 mph), max.: 326 km/h (202 mph) Actual wheel speed Similar speed as indicated on speedometer
      FL Wheel Speed Front wheel speed sensor LH reading / min.: 0 km/h (0 mph), max.: 326 km/h (202 mph) Actual wheel speed Similar speed as indicated on speedometer
      RR Wheel Speed Rear wheel speed sensor RH reading / min.: 0 km/h (0 mph), max.: 326 km/h (202 mph) Actual wheel speed Similar speed as indicated on speedometer
      RL Wheel Speed Rear wheel speed sensor LH reading / min.: 0 km/h (0 mph), max.: 326 km/h (202 mph) Actual wheel speed Similar speed as indicated on speedometer
      Vehicle Speed Maximum wheel speed sensor reading / min.: 0 km/h (0 mph), max.: 326 km/h (202 mph) Actual vehicle speed Speed indicated on speedometer
      FR Wheel Acceleration

      Front wheel acceleration RH / min.: -200.84 m/s2, max.: 199.27 m/s2

      		- -
      FL Wheel Acceleration

      Front wheel acceleration LH / min.: -200.84 m/s2, max.: 199.27 m/s2

      		- -
      RR Wheel Acceleration

      Rear wheel acceleration RH / min.: -200.84 m/s2, max.: 199.27 m/s2

      		- -
      RL Wheel Acceleration

      Rear wheel acceleration LH / min.: -200.84 m/s2, max.: 199.27 m/s2

      		- -
      FR Wheel Direction Front wheel direction RH / Forward or Back

      Forward: Forward

      Back: Back

      		 -
      FL Wheel Direction Front wheel direction LH / Forward or Back

      Forward: Forward

      Back: Back

      		 -
      RR Wheel Direction Rear wheel direction RH / Forward or Back

      Forward: Forward

      Back: Back

      		 -
      RL Wheel Direction Rear wheel direction LH / Forward or Back

      Forward: Forward

      Back: Back

      		 -
      FR Wheel ABS Ctrl Status Front wheel RH ABS control status / ON or OFF

      ON: During control

      OFF: Not during control

      		 -
      FL Wheel ABS Ctrl Status Front wheel LH ABS control status / ON or OFF

      ON: During control

      OFF: Not during control

      		 -
      RR Wheel ABS Ctrl Status Rear wheel RH ABS control status / ON or OFF

      ON: During control

      OFF: Not during control

      		 -
      RL Wheel ABS Ctrl Status Rear wheel LH ABS control status / ON or OFF

      ON: During control

      OFF: Not during control

      		 -
      BA Ctrl Status BA control status / ON or OFF

      ON: During control

      OFF: Not during control

      		 -
      PBA Ctrl Status PBA control status / ON or OFF

      ON: During control

      OFF: Not during control

      		 -
      TRC(TRAC) Ctrl Status TR(A)C control status / ON or OFF

      ON: During control

      OFF: Not during control

      		 -
      TRC(TRAC) Engine Ctrl Status TR(A)C engine control status / ON or OFF

      ON: During control

      OFF: Not during control

      		 -
      TRC(TRAC) Brake Ctrl Status TR(A)C brake control status / ON or OFF

      ON: During control

      OFF: Not during control

      		 -
      FR Wheel VSC Ctrl Status Front wheel RH VSC control status / ON or OFF

      ON: During control

      OFF: Not during control

      		 -
      FL Wheel VSC Ctrl Status Front wheel LH VSC control status / ON or OFF

      ON: During control

      OFF: Not during control

      		 -
      RR Wheel VSC Ctrl Status Rear wheel RH VSC control status / ON or OFF

      ON: During control

      OFF: Not during control

      		 -
      RL Wheel VSC Ctrl Status Rear wheel LH VSC control status / ON or OFF

      ON: During control

      OFF: Not during control

      		 -
      Engine Revolutions Engine revolutions / min.: 0 rpm, max.: 65535 rpm - -
      Real Engine Torque Real engine torque / min.: -1024.0 Nm, max.: 1023.0 Nm - -
      Accelerator Opening Angle % Percentage of accelerator pedal opening angle / min.: 0.0%, max.: 128.0% - -
      Electronically Controlled Brake System Motor Relay Electronically controlled brake system motor relay / ON or OFF

      ON: Motor relay ON

      OFF: Motor relay OFF

      		 -
      Electronically Controlled Brake System Motor Relay2 Electronically controlled brake system motor relay 2 / ON or OFF

      ON: Motor relay ON

      OFF: Motor relay OFF

      		 -
      Electronically Controlled Brake System Main Relay Electronically controlled brake system main relay / ON or OFF

      ON: Main relay ON

      OFF: Main relay OFF

      		 -
      Electronically Controlled Brake System Main Relay2 Electronically controlled brake system main relay 2 / ON or OFF

      ON: Main relay ON

      OFF: Main relay OFF

      		 -
      Electronically Controlled Brake System Solenoid (SMC1) Electronically controlled brake system solenoid (SMC1) / ON or OFF

      ON: Operates

      OFF: Does not operate

      		 -
      Electronically Controlled Brake System Solenoid (SMC2) Electronically controlled brake system solenoid (SMC2) / ON or OFF

      ON: Operates

      OFF: Does not operate

      		 -
      Electronically Controlled Brake System Solenoid (SCSS) Electronically controlled brake system solenoid (SCSS) / ON or OFF

      ON: Operates

      OFF: Does not operate

      		 -
      SLAFR Solenoid Current SLAFR solenoid current / min.: 0.00 A, max.: 3.00 A When brake pedal is released: 0.00 A -
      SLAFL Solenoid Current SLAFL solenoid current / min.: 0.00 A, max.: 3.00 A When brake pedal is released: 0.00 A -
      SLARR Solenoid Current SLARR solenoid current / min.: 0.00 A, max.: 3.00 A When brake pedal is released: 0.00 A -
      SLARL Solenoid Current SLARL solenoid current / min.: 0.00 A, max.: 3.00 A When brake pedal is released: 0.00 A -
      SLRFR Solenoid Current SLRFR solenoid current / min.: 0.00 A, max.: 3.00 A When brake pedal is released: 0.00 A -
      SLRFL Solenoid Current SLRFL solenoid current / min.: 0.00 A, max.: 3.00 A When brake pedal is released: 0.00 A -
      SLRRR Solenoid Current SLRRR solenoid current / min.: 0.00 A, max.: 3.00 A When brake pedal is released: 0.00 A -
      SLRRL Solenoid Current SLRRL solenoid current / min.: 0.00 A, max.: 3.00 A When brake pedal is released: 0.00 A -
      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 SFI communication open detection / Error or Normal

      Error: Momentary interruption

      Normal: Normal

      		 -
      Yaw Rate Open Yaw rate sensor open detection / Error or Normal

      Error: Momentary interruption

      Normal: Normal

      		 -
      Deceleration Open Acceleration sensor open detection / Error or Normal

      Error: Momentary interruption

      Normal: Normal

      		 -
      Steering Open Steering angle sensor open detection / Error or Normal

      Error: Momentary interruption

      Normal: Normal

      		 -
      Master Cylinder Open Master cylinder pressure sensor open detection / Error or Normal

      Error: Momentary interruption

      Normal: Normal

      		 -
      Master Cylinder2 Open Master cylinder pressure sensor 2 open detection / Error or Normal

      Error: Momentary interruption

      Normal: Normal

      		 -
      Stroke Open Stroke sensor open detection / Error or Normal

      Error: Momentary interruption

      Normal: Normal

      		 -
      FR Wheel Cylinder Open Front wheel cylinder pressure sensor RH open detection / Error or Normal

      Error: Momentary interruption

      Normal: Normal

      		 -
      FL Wheel Cylinder Open Front wheel cylinder pressure sensor LH open detection / Error or Normal

      Error: Momentary interruption

      Normal: Normal

      		 -
      RR Wheel Cylinder Open Rear wheel cylinder pressure sensor RH open detection / Error or Normal

      Error: Momentary interruption

      Normal: Normal

      		 -
      RL Wheel Cylinder Open Rear wheel cylinder pressure sensor LH open detection / Error or Normal

      Error: Momentary interruption

      Normal: Normal

      		 -
      Accumulator Open Accumulator pressure sensor open detection / Error or Normal

      Error: Momentary interruption

      Normal: Normal

      		 -
      VGRS Information VGRS information / With, Without or Unknown

      With: With

      Without: Without

      		 -
      Suspension Information Suspension information / SPORT, NORMAL, COIL, WITHOUT

      SPORT: Sport mode

      NORMAL: Normal mode

      COIL: Coil type

      WITHOUT: Without

      		 -
      Wheelbase Information Wheelbase information / Short, Long, Without

      Short: Standard type

      Long: Long type

      Without: Without
      VCM1 Voltage Value VCM1 Voltage Value / min.: 0.00 V, max.: 10.00 V - -
      VCM2 Voltage Value VCM2 Voltage Value / min.: 0.00 V, max.: 10.00 V - -
      IG1 Voltage Value IG1 Voltage Value / min.: 0.00 V, max.: 20.00 V - -
      IG2 Voltage Value IG2 Voltage Value / min.: 0.00 V, max.: 20.00 V - -
      BS1 Voltage Value BS1 Voltage Value / min.: 0.00 V, max.: 20.00 V - -
      BS2 Voltage Value BS2 Voltage Value / min.: 0.00 V, max.: 20.00 V - -
      VM1 Voltage Value VM1 Voltage Value / min.: 0.00 V, max.: 20.00 V - -
      VM2 Voltage Value VM2 Voltage Value / min.: 0.00 V, max.: 20.00 V - -
      +B1 Voltage Value +B1 Voltage Value / min.: 0.00 V, max.: 20.00 V - -
      +B2 Voltage Value +B2 Voltage Value / min.: 0.00 V, max.: 20.00 V - -
      MT Voltage Value MT Voltage Value / min.: 0.00 V, max.: 20.00 V - -
      BH Standby Light Brake hold standby indicator light / ON or OFF

      ON: Brake hold standby indicator light ON

      OFF: Brake hold standby indicator light OFF

      		 -
      BH Operated Light Brake hold operated indicator light / ON or OFF

      ON: Brake hold operated indicator light ON

      OFF: Brake hold operated indicator light OFF

      		 -
      TRC/VSC Off Mode TR(A)C and VSC OFF mode status / Normal, Unknown, TRC OFF or VSC OFF

      Normal: Normal

      TRC OFF: TR(A)C OFF mode

      VSC OFF: VSC OFF mode

      		 -
      Number of DTC Number of DTC / min.: 0, max.: 255 - -
      ACC Low Pressure History Trip Counter Number of times engine switch turned on (IG) and then off after ACC low pressure condition occurs / Min.: 0, Max.: 255 0 -
      ACC Low Pressure History Accumulation Counter Total number of times ACC low pressure condition occurs while brake control system not prepared / Min.: 0, Max.: 255 0 -

  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. Warm up the engine.

    2. Turn the engine switch off.

    3. Connect the GTS to the DLC3.

    4. Turn the engine switch on (IG).

    5. Turn the GTS on.

    6. Enter the following menus: Chassis / ABS/VSC/TRC / Active Test.

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

      Tech Tips


      • The engine switch must be turned on (IG) to proceed to the Active Test using the GTS.

      • The Active Tests of the ABS solenoid, ABS motor relay, ABS warning light and brake warning light / red (malfunction) are available when the vehicle is stopped.

      • The motors stop automatically after 5 seconds of activation to prevent them from being damaged. When the motors are driven repeatedly, certain intervals are required.

      • Each solenoid stops automatically after 2 seconds of activation to prevent them from being damaged, and can be operated again after a certain interval.

      • Do not depress the brake pedal while only the pressure reduction solenoid valves are on.

      • Do not drive 2 or more solenoids simultaneously except to operate the pressure holding solenoid valves and pressure reduction solenoid valves of each wheel.

      ABS/VSC/TRC
      Tester Display Test Part Control Range Diagnostic Note
      ABS Warning Light ABS warning light ON / OFF Observe combination meter
      Brake Warning Light Brake warning light / red (malfunction) ON / OFF Observe combination meter
      Electronically Controlled Brake System Warning Light Brake warning light / yellow (minor malfunction) ON / OFF Observe combination meter
      Buzzer Skid control buzzer ON / OFF Buzzer can be heard
      Stop Light Relay Stop light operation relay ON / OFF Observe rear combination light (stop light) (Does not come on for 5 sec. or more)
      Electronically Controlled Brake System Main Relay Electronically controlled brake system main relay ON / OFF Operation sound of relay (clicking sound) can be heard
      Electronically Controlled Brake System Main Relay2 Electronically controlled brake system main relay 2 ON / OFF Operation sound of relay (clicking sound) can be heard
      Electronically Controlled Brake System Motor Relay Electronically controlled brake system motor relay ON / OFF Operation sound of relay (clicking sound) and motor can be heard
      Electronically Controlled Brake System Motor Relay2 Electronically controlled brake system motor relay 2 ON / OFF Operation sound of relay (clicking sound) and motor can be heard
      Electronically Controlled Brake System Solenoid (SMC1) Electronically controlled brake system solenoid (SMC1) ON / OFF Operation sound of solenoid (clicking sound) can be heard
      Electronically Controlled Brake System Solenoid (SMC2) Electronically controlled brake system solenoid (SMC2) ON / OFF Operation sound of solenoid (clicking sound) can be heard
      Electronically Controlled Brake System Control Invalid Electronically controlled brake system control invalid ON / OFF Electronically controlled brake system control is blocked (braking with no boost assist)
      Accumulator Zero Down Accumulator zero down activation ON / OFF Brake fluid in accumulator makes noise
      Stroke Simulator Cut Valve Pattern Stroke simulator cut valve pattern activation ON / OFF

      -

      (Difficult to identify visually)
      Actuator Air Bleeding Pattern Actuator air bleeding pattern activation ON / OFF When accumulator pressure lowers, pump operation creates sound
      Power Supply Air Bleeding Pattern1 Power supply air bleeding pattern activation 1 ON / OFF When accumulator pressure lowers, pump operation creates sound
      Power Supply Air Bleeding Pattern2 Power supply air bleeding pattern activation 2 ON / OFF When accumulator pressure lowers, pump operation creates sound
      RL Wheel Air Bleeding Pattern Rear wheel LH air bleeding pattern activation ON / OFF When accumulator pressure lowers, pump operation creates sound
      RR Wheel Air Bleeding Pattern Rear wheel RH air bleeding pattern activation ON / OFF When accumulator pressure lowers, pump operation creates sound
      Pump Check Pattern Pump check pattern activation ON / OFF When accumulator pressure lowers, pump operation creates sound
      Drain System Air Bleeding Pattern Drain system air bleeding pattern activation ON / OFF When accumulator pressure lowers, pump operation creates sound
      Electronically Controlled Brake System Solenoid (SLRRL) Valve Close SLRRL solenoid ON / OFF Operating sound of solenoid (clicking sound) can be heard
      Electronically Controlled Brake System Solenoid (SLARL) Valve Close SLARL solenoid ON / OFF Operating sound of solenoid (clicking sound) can be heard
      Electronically Controlled Brake System Solenoid (SLRRR) Valve Close SLRRR solenoid ON / OFF Operating sound of solenoid (clicking sound) can be heard
      Electronically Controlled Brake System Solenoid (SLARR) Valve Close SLARR solenoid ON / OFF Operating sound of solenoid (clicking sound) can be heard
      Electronically Controlled Brake System Solenoid (SLRFL) Valve Close SLRFL solenoid ON / OFF Operating sound of solenoid (clicking sound) can be heard
      Electronically Controlled Brake System Solenoid (SLAFL) Valve Close SLAFL solenoid ON / OFF Operating sound of solenoid (clicking sound) can be heard
      Electronically Controlled Brake System Solenoid (SLRFR) Valve Close SLRFR solenoid ON / OFF Operating sound of solenoid (clicking sound) can be heard
      Electronically Controlled Brake System Solenoid (SLAFR) Valve Close SLAFR solenoid ON / OFF Operating sound of solenoid (clicking sound) can be heard
      BH Standby Light Brake hold standby indicator light ON / OFF Observe combination meter
      BH Operated Light Brake hold operated indicator light ON / OFF Observe combination meter
      TRC(TRAC) OFF Indicator Light TRAC OFF indicator ON / OFF Observe combination meter
      VSC OFF Indicator Light VSC OFF indicator light ON / OFF Observe combination meter
      Slip Indicator Light Slip indicator light ON / OFF Observe combination meter