ANTI-LOCK BRAKE SYSTEM DATA LIST / ACTIVE TEST


  1. 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 ignition switch off.

    3. Connect the GTS to the DLC3.

    4. Turn the ignition switch to ON.

    5. Turn ON the GTS.

    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 OFF -
      Brake Warning Light Brake warning light/ ON or OFF 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

      		 -
      Brake Pedal Load Sensing SW Brake pedal load sensing switch/ ON or OFF

      ON: Brake pedal depressed beyond specified point

      OFF: Brake pedal not depressed beyond specified point

      		 -
      Master Cylinder Sensor Master cylinder pressure sensor reading/ Min.: 0.00 V, Max.: 5.00 V When brake pedal is released: 0.3 to 0.9 V The value increases when the brake pedal is depressed.
      Zero Point of M/C Memorized zero value/ Min.: -12.50 MPa, Max.: 12.40 MPa After master cylinder pressure sensor zero point calibration: 2.45 +/- 1 MPa -
      Deceleration Sensor

      Acceleration sensor/ Min.: -18.525 m/s2, Max.: 18.387 m/s2

      		- Changes continuously during acceleration/deceleration.
      Deceleration Sensor2

      Acceleration sensor 2/ Min.: -18.525 m/s2, Max.: 18.387 m/s2

      		- Changes continuously during acceleration/deceleration.
      Forward and Rearward G

      Forward and backward G/ Min.: -25.10 m/s2, Max.: 24.90 m/s2

      		- Changes in proportion to acceleration during acceleration/deceleration.
      L4 Switch Transfer L4 detection switch/ ON or OFF

      ON: Transfer L4 position

      OFF: Transfer except L4 position

      		 -
      FR Wheel Speed FR wheel speed sensor value/ Min.: 0 km/h (0 mph), Max.: 326 km/h (202 mph)

      Vehicle stopped:

      0 km/h

      		 No large fluctuations when driving at a constant speed.
      FL Wheel Speed FL wheel speed sensor value/ Min.: 0 km/h (0 mph), Max.: 326 km/h (202 mph)

      Vehicle stopped:

      0 km/h

      		 No large fluctuations when driving at a constant speed.
      RR Wheel Speed RR wheel speed sensor value/ Min.: 0 km/h (0 mph), Max.: 326 km/h (202 mph)

      Vehicle stopped:

      0 km/h

      		 No large fluctuations when driving at a constant speed.
      RL Wheel Speed RL wheel speed sensor value/ Min.: 0 km/h (0 mph), Max.: 326 km/h (202 mph)

      Vehicle stopped:

      0 km/h

      		 No large fluctuations when driving at a constant speed.
      Vehicle Speed Maximum wheel speed sensor value/ Min.: 0 km/h (0 mph), Max.: 326 km/h (202 mph)

      Vehicle stopped:

      0 km/h

      		 No large fluctuations when driving at a constant speed.
      FR Wheel Acceleration

      FR wheel acceleration/ Min.: -200.84 m/s2, Max.: 199.27 m/s2

      		- Changes continuously during acceleration/deceleration.
      FL Wheel Acceleration

      FL wheel acceleration/ Min.: -200.84 m/s2, Max.: 199.27 m/s2

      		- Changes continuously during acceleration/deceleration.
      RR Wheel Acceleration

      RR wheel acceleration/ Min.: -200.84 m/s2, Max.: 199.27 m/s2

      		- Changes continuously during acceleration/deceleration.
      RL Wheel Acceleration

      RL wheel acceleration/ Min.: -200.84 m/s2, Max.: 199.27 m/s2

      		- Changes continuously during acceleration/deceleration.
      FR Wheel Direction Front wheel RH direction signal/ Forward or Back

      Forward: Forward

      Back: Backward

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

      Forward: Forward

      Back: Backward

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

      Forward: Forward

      Back: Backward

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

      Forward: Forward

      Back: Backward

      		 -
      EBS Relay Stop light control ECU (Emergency brake signal)/ ON or OFF

      ON: Stop light control ECU on

      OFF: Stop light control ECU off

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

      ON: During control

      OFF: Not during control

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

      ON: During control

      OFF: Not during control

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

      ON: During control

      OFF: Not during control

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

      ON: During control

      OFF: Not during control

      		 -
      RR Wheel EBD Ctrl Status RR wheel EBD control status/ ON or OFF

      ON: During control

      OFF: Not during control

      		 -
      RL Wheel EBD Ctrl Status RL wheel EBD 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

      		 -
      Engine Revolutions Engine speed/ Min.: 0 rpm, Max.: 65535 rpm Engine stopped: 0 rpm -
      Accelerator Opening Angle %*1 Percentage of accelerator pedal opening angle/ Min.: 0.0%, Max.: 128.0% When accelerator pedal released: 0% Changes in proportion to the movement of the pedal during accelerator pedal operation.
      Solenoid Relay ABS solenoid relay/ ON or OFF

      ON: Solenoid relay ON

      OFF: Solenoid relay OFF

      		 -
      ECB*2 Motor Relay ABS motor relay/ ON or OFF

      ON: Motor relay ON

      OFF: Motor relay OFF

      		 The item is displayed on the GTS but not used.
      Fail Safe Motor Relay ABS motor fail -safe relay/ ON or OFF

      ON: Motor relay ON

      OFF: Motor relay OFF

      		 -
      TR(A)C/VSC Solenoid (SM2) Master cut solenoid (SM2)/ ON or OFF

      ON: Operating

      OFF: Not operating

      		 -
      TR(A)C/VSC Solenoid (SM1) Master cut solenoid (SM1)/ ON or OFF

      ON: Operating

      OFF: Not operating

      		 -
      ABS Solenoid (SFRH) ABS solenoid (SFRH)/ ON or OFF

      ON: Operating

      OFF: Not operating

      		 -
      ABS Solenoid (SFRR) ABS solenoid (SFRR)/ ON or OFF

      ON: Operating

      OFF: Not operating

      		 -
      ABS Solenoid (SFLH) ABS solenoid (SFLH)/ ON or OFF

      ON: Operating

      OFF: Not operating

      		 -
      ABS Solenoid (SFLR) ABS solenoid (SFLR)/ ON or OFF

      ON: Operating

      OFF: Not operating

      		 -
      ABS Solenoid (SRRH) ABS solenoid (SRRH)/ ON or OFF

      ON: Operating

      OFF: Not operating

      		 -
      ABS Solenoid (SRRR) ABS solenoid (SRRR)/ ON or OFF

      ON: Operating

      OFF: Not operating

      		 -
      ABS Solenoid (SRLH) ABS solenoid (SRLH)/ ON or OFF

      ON: Operating

      OFF: Not operating

      		 -
      ABS Solenoid (SRLR) ABS solenoid (SRLR)/ ON or OFF

      ON: Operating

      OFF: Not operating

      		 -
      FR Speed Open Front speed sensor RH open circuit detection/ Error or Normal Normal -
      FL Speed Open Front speed sensor LH open circuit detection/ Error or Normal Normal -
      RR Speed Open Rear speed sensor RH open circuit detection/ Error or Normal Normal -
      RL Speed Open Rear speed sensor LH open circuit detection/ Error or Normal Normal -
      Deceleration Open Acceleration sensor open circuit detection/ Error or Normal Normal -
      Master Cylinder Open Master cylinder pressure sensor open circuit detection/ Error or Normal Normal -
      Wheelbase Information*1 Wheelbase information/ Short, Long, Without

      Short: Short wheelbase

      Long: Long wheelbase

      		 -
      IG1 Voltage Value IG1 voltage/ Min.: 0.00 V, Max.: 20.00 V Ignition switch ON: 11 to 14 V -
      MT Voltage Value Motor driving monitor voltage/ Min.: 0.00 V, Max.: 20.00 V - -
      Number of DTC Number of DTC stored/ Min.: 0, Max.: 255 0 -
      IG Voltage Value Decreased IG voltage value decrease detection/ Error or Normal Normal -
      IG Voltage Value Increased IG voltage value increase detection/ Error or Normal Normal -
      FR Speed Sensor Voltage Open Front speed sensor RH voltage open circuit detection/ Error or Normal Normal -
      FL Speed Sensor Voltage Open Front speed sensor LH voltage open circuit detection/ Error or Normal Normal -
      RR Speed Sensor Voltage Open Rear speed sensor RH voltage open circuit detection/ Error or Normal Normal -
      RL Speed Sensor Voltage Open Rear speed sensor LH voltage open circuit detection/ Error or Normal Normal -
      M/C Pressure Sensor Noise Master cylinder pressure sensor noise detection/ Error or Normal Normal -
      Brake Pedal Switch Open Brake pedal load sensing switch open circuit detection/ Error or Normal Normal -
      Yaw Rate Sensor Voltage Open Acceleration sensor voltage open circuit detection/ Error or Normal Normal -
      Hazard Switch History Hazard warning switch history/ Incomplete or Completel Normal -

      • *1: for 2TR-FE

      • *2: Electronically Controlled Brake

  2. 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 ignition switch off.

    3. Connect the GTS to the DLC3.

    4. Turn the ignition switch to ON.

    5. Turn ON the GTS.

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

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

      ABS/VSC/TRC
      Tester Display Test Part Control Range Diagnostic Note
      ABS Warning Light ABS warning light Warning light ON/OFF Observe the combination meter.
      Brake Warning Light Brake warning light Warning light ON/OFF Observe the combination meter.
      Solenoid Relay Solenoid relay Relay ON/OFF -
      Motor Relay Motor relay Relay ON/OFF The operating sound of the motor can be heard.
      ABS Solenoid (SRLR) ABS solenoid (SRLR) Solenoid ON/OFF The operating sound of the solenoid (clicking sound) can be heard.
      ABS Solenoid (SRLH) ABS solenoid (SRLH) Solenoid ON/OFF The operating sound of the solenoid (clicking sound) can be heard.
      ABS Solenoid (SRRR) ABS solenoid (SRRR) Solenoid ON/OFF The operating sound of the solenoid (clicking sound) can be heard.
      ABS Solenoid (SRRH) ABS solenoid (SRRH) Solenoid ON/OFF The operating sound of the solenoid (clicking sound) can be heard.
      ABS Solenoid (SFLR) ABS solenoid (SFLR) Solenoid ON/OFF The operating sound of the solenoid (clicking sound) can be heard.
      ABS Solenoid (SFLH) ABS solenoid (SFLH) Solenoid ON/OFF The operating sound of the solenoid (clicking sound) can be heard.
      ABS Solenoid (SFRR) ABS solenoid (SFRR) Solenoid ON/OFF The operating sound of the solenoid (clicking sound) can be heard.
      ABS Solenoid (SFRH) ABS solenoid (SFRH) Solenoid ON/OFF The operating sound of the solenoid (clicking sound) can be heard.
      VSC/TRC Solenoid (SMR) Master cut solenoid (SM2) Solenoid ON/OFF The operating sound of the solenoid (clicking sound) can be heard.
      VSC/TRC Solenoid (SMF) Master cut solenoid (SM1) Solenoid ON/OFF The operating sound of the solenoid (clicking sound) can be heard.
      EBS Relay Stop light control ECU (Emergency brake signal) Stop light control ECU assembly ON/OFF Make sure the hazard warning switch is off and the stop light switch is on when performing this Active Test.
      ABS Solenoid Selection of multiple ABS solenoids (SFRH, SFLH, SRRH, SRLH, SFRR, SFLR, SRRR and SRLR) possible Start/Stop

      Start: When Start is selected, the selected solenoids turn ON.

      Stop: When Stop is selected, the selected solenoids turn OFF.
      VSC/TRC(TRAC) Solenoid Selection of master cut solenoids SMR (SM2) and SMF (SM1) possible Start/Stop

      Start: When Start is selected, the selected solenoids turn ON.

      Stop: When Stop is selected, the selected solenoids turn OFF.