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Home >> Lexus >> 2024 >> TX 350 Base, FWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 46 (Electronically Controlled Brake System - Diagnostics - Introduction (1 Of 2)) >> ELECTRONICALLY CONTROLLED BRAKE SYSTEM (except Gasoline Model) >> Data List / Active Test [09/2023 - 12/2023] >> Data List / Active Test [09/2023 - 12/2023]

Data List / Active Test [09/2023 - 12/2023]

WARNING: This page is about a different car, the 2024 Lexus TX 550h+ and 2024 Lexus TX 500h. However, it is still accessible from the selected car via links, so may be relevant.
  1. DATA LIST 
    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.

    HINT: 

    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.

    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 the GTS on.
    6. Enter the following menus: Chassis / Brake Booster / Data List.
    7. Enter the following menus: Chassis / Brake/EPB* / Data List.

      *: Electric Parking Brake System

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

      Chassis > Brake Booster > Data List 

      Tester Display Measurement Item Range Normal Condition Diagnostic Note
      Total Distance Traveled - Unit Total distance traveled unit km / mile - -
      Total Distance Traveled Total distance traveled Min.: 0
      Max.: 16777215      		 - -
      Solenoid Power Supply Voltage Solenoid power supply voltage value Min.: 0.0 V
      Max.: 25.5 V      		 - Changes in proportion to auxiliary battery voltage
      Stop Light SW Stop light switch assembly (STP terminal input) OFF / ON OFF: Brake pedal released
      ON: Brake pedal depressed      		 HINT: 
      The brake pedal state is determined using the voltage at terminal STP
      Parking Brake SW Parking brake status OFF / ON OFF: Parking brake released
      ON: Parking brake applied      		 -
      Buzzer Meter buzzer OFF / ON OFF: Buzzer off
      ON: Buzzer on      		 -
      Dealer Mode Dealer Mode (Signal Check mode or Calibration mode) status OFF / ON OFF: Normal mode
      ON: Dealer Mode (Signal Check mode or Calibration mode)      		 HINT: 
      • For details on Dealer Mode (Signal Check), refer to Signal Check*1
      • For details on Dealer Mode (Calibration), refer to Reset Memory / Calibration*2
      Reservoir Warning SW Brake fluid level warning switch OFF / ON OFF: Reservoir level normal
      ON: Reservoir level low      		 -
      ECB Solenoid (SGH) Switching solenoid valve (SGH) OFF / ON OFF: Solenoid off
      ON: Solenoid on      		 ECB: Electronically Controlled Brake System
      ECB Solenoid (SSA) Switching solenoid valve (SSA) OFF / ON OFF: Solenoid off
      ON: Solenoid on      		 ECB: Electronically Controlled Brake System
      IGP_PT2 IGP_PT2 status OFF / ON OFF: IGP_PT2 OFF
      ON: IGP_PT2 ON      		 -
      Stroke Sensor Brake pedal stroke sensor 1 Min.: 0.0 V
      Max.: 5.0 V      		 Brake pedal released: 0.6 to 1.4 V Reading increases when brake pedal is depressed
      Quantity of Brake Pedal Stroke Brake pedal stroke amount Min.: 0 mm (0 in.)
      Max.: 255 mm (10 in.)      		 Brake pedal released: 0 mm (0 in.) Reading increases when brake pedal is depressed
      Servo Pressure Pressure value of servo Min.: 0.00 MPa
      Max.: 24.48 MPa      		 Brake pedal released: 0.00 to 1.53 MPa Brake pedal is being depressed: Changes in proportion to the depression force of the brake pedal
      Voltage of Stroke Sensor Voltage of brake pedal stroke sensor 1 Min.: 0.0 V
      Max.: 5.0 V      		 - -
      Brake Pedal Stroke Change Speed Brake pedal stroke rate of change Min.: -2560 mm/s
      Max.: 2540 mm/s      		 Brake pedal released or depressed and held: 0 mm/s Brake pedal is being moved: Changes in proportion to the operation speed of the brake pedal
      Target Oil Pressure Wheel target hydraulic pressure Min.: 0.00 MPa
      Max.: 20.00 MPa      		 - Changes according to the target wheel cylinder hydraulic pressure
      VCSK Voltage Value VCSK voltage value Min.: 0.000 V
      Max.: 5.500 V      		 4.800 to 5.200 V -
      SGH Solenoid Current Switching solenoid valve (SGH) current Min.: 0.000 A
      Max.: 3.000 A      		 0.000 to 1.500 A -
      SSA Solenoid Current Switching solenoid valve (SSA) current Min.: 0.000 A
      Max.: 3.000 A      		 0.000 to 1.500 A -
      ECB Main Relay Main relay operation request OFF / ON OFF: Relay off
      ON: Relay on      		 ECB: Electronically Controlled Brake System
      Brake Booster Motor Brake booster motor status OFF / ON OFF: Motor off
      ON: Motor on      		 -
      Linear Solenoid (SLM1) Linear solenoid valve (SLM1) current Min.: 0.000 A
      Max.: 0.504 A      		 - -
      Linear Solenoid (SLM2) Linear solenoid valve (SLM2) current Min.: 0.000 A
      Max.: 0.504 A      		 - -
      The Number of Capacitor Operation Displays the number of integration control supply operations Min.: 0 Times
      Max.: 255 Times      		 - -
      Gap Hold Chamber Oil Pressure Pressure value of stroke simulator Min.: 0.00 MPa
      Max.: 24.48 MPa      		 Brake pedal released: 0.00 to 1.53 MPa Brake pedal is being depressed: Changes in proportion to the depression force of the brake pedal
      Gap Hold Chamber Oil Pressure Grade Amount of change in stroke simulator oil pressure Min.: -30 MPa/s
      Max.: 225 MPa/s      		 - -
      Linear Solenoid Current (SLM1) Linear solenoid valve (SLM1) current Min.: 0.000 A
      Max.: 1.500 A      		 Brake pedal released: 0 A -
      Linear Solenoid Current (SLM2) Linear solenoid valve (SLM2) current Min.: 0.000 A
      Max.: 1.500 A      		 Brake pedal released: 0 A -
      IGR Voltage IGR voltage value Min.: 0.0 V
      Max.: 25.5 V      		 - Changes in proportion to auxiliary battery voltage
      BS Voltage BS voltage value Min.: 0.0 V
      Max.: 25.5 V      		 - Changes in proportion to auxiliary battery voltage
      BM Voltage BM voltage value Min.: 0.0 V
      Max.: 25.5 V      		 - Changes in proportion to auxiliary battery voltage
      Zero point Calibrated Value of Phase U Current Monitor Displays zero point calibrated value of phase U current monitor for brushless motor Min.: -32.768 A
      Max.: 32.767 A
      Not supported: Not supported      		 - -
      Zero point Calibrated Value of Phase V Current Monitor Displays zero point calibrated value of phase V current monitor for brushless motor Min.: -32.768 A
      Max.: 32.767 A
      Not supported: Not supported      		 - -
      Zero point Calibrated Value of Phase W Current Monitor Displays zero point calibrated value of phase W current monitor for brushless motor Min.: -32.768 A
      Max.: 32.767 A
      Not supported: Not supported      		 - -
      Thermistor1 Temperature for Inverter Circuit Temperature of thermistor1 in inverter circuit Min.: -327.68°C (-558°F)
      Max.: 327.67°C (622°F)
      Not supported: Not supported      		 - -
      Thermistor2 Temperature for Inverter Circuit Temperature of thermistor2 in inverter circuit Min.: -327.68°C (-558°F)
      Max.: 327.67°C (-622°F)
      Not supported: Not supported      		 - -
      Brushless Motor Inverter end Voltage Inverter end voltage for brushless motor Min.: 0.00 V
      Max.: 655.35 V
      Not supported: Not supported      		 - Changes in proportion to auxiliary battery voltage
      Brushless Motor Required Rotation Speed (with Rotation Angle Sensor) Requested brushless motor rotation speed Min.: -32768 rpm
      Max.: 32767 rpm      		 Brake pedal released: 0 rpm -
      Brushless Motor Actual Rotation Speed (with Rotation Angle Sensor) Actual brushless motor rotation speed Min.: -32768 rpm
      Max.: 32767 rpm      		 Brake pedal released: 0 rpm -
      Brushless Motor Operation Status (with Rotation Angle Sensor) Operation status of brushless motor Abnormal / Stop / Synchronization drive / Extended Induced voltage - -
      Gap Hold Chamber Pressure Sensor Open History History of momentary open in gap pressure sensor None / Exist - -
      Down Stream Voltage Solenoid Relay Solenoid relay downstream voltage Min.: 0.0 V
      Max.: 25.5 V      		 - Changes in proportion to auxiliary battery voltage
      CBKP Voltage CBKP voltage value Min.: 0.0 V
      Max.: 25.5 V      		 - Changes in proportion to auxiliary battery voltage
      1. *1: for performing Dealer Mode (Signal Check): Refer to SIGNAL CHECK [09/2023 - ] 
      2. *2: for entering Dealer Mode (Calibration): Refer to RESET MEMORY / CALIBRATION [09/2023 - ]

      Chassis > Brake/EPB > Data List 

      Tester Display Measurement Item Range Normal Condition Diagnostic Note
      Total Distance Traveled - Unit Total distance traveled unit km / mile - -
      Total Distance Traveled Total distance traveled Min.: 0
      Max.: 16777215      		 - -
      FR Wheel Speed Front wheel speed sensor RH reading Min.: 0.0 km/h (0 mph)
      Max.: 6553.5 km/h (4072 mph)      		 Vehicle stopped: 0.0 km/h (0 mph) When driving at constant speed: No large fluctuations
      FL Wheel Speed Front wheel speed sensor LH reading Min.: 0.0 km/h (0 mph)
      Max.: 6553.5 km/h (4072 mph)      		 Vehicle stopped: 0.0 km/h (0 mph) When driving at constant speed: No large fluctuations
      RR Wheel Speed Rear wheel speed sensor RH reading Min.: 0.0 km/h (0 mph)
      Max.: 6553.5 km/h (4072 mph)      		 Vehicle stopped: 0.0 km/h (0 mph) When driving at constant speed: No large fluctuations
      RL Wheel Speed Rear wheel speed sensor LH reading Min.: 0.0 km/h (0 mph)
      Max.: 6553.5 km/h (4072 mph)      		 Vehicle stopped: 0.0 km/h (0 mph) When driving at constant speed: No large fluctuations
      FR Wheel Acceleration Front wheel RH acceleration Min.: -200.840 m/s2
      Max.: 199.271 m/s2      		 Vehicle stopped: 0.000 m/s2
      During deceleration: -200.840 to 0.000 m/s2
      During acceleration: 0.000 to 199.271 m/s2      		 During deceleration/acceleration: Changes continuously
      FL Wheel Acceleration Front wheel LH acceleration Min.: -200.840 m/s2
      Max.: 199.271 m/s2      		 Vehicle stopped: 0.000 m/s2
      During deceleration: -200.840 to 0.000 m/s2
      During acceleration: 0.000 to 199.271 m/s2      		 During deceleration/acceleration: Changes continuously
      RR Wheel Acceleration Rear wheel RH acceleration Min.: -200.840 m/s2
      Max.: 199.271 m/s2      		 Vehicle stopped: 0.000 m/s2
      During deceleration: -200.840 to 0.000 m/s2
      During acceleration: 0.000 to 199.271 m/s2      		 During deceleration/acceleration: Changes continuously
      RL Wheel Acceleration Rear wheel LH acceleration Min.: -200.840 m/s2
      Max.: 199.271 m/s2      		 Vehicle stopped: 0.000 m/s2
      During deceleration: -200.840 to 0.000 m/s2
      During acceleration: 0.000 to 199.271 m/s2      		 During deceleration/acceleration: Changes continuously
      Master Cylinder Sensor 1 Master cylinder pressure sensor pressure (value detected by ECU) Min.: -1.00 MPa
      Max.: 23.99 MPa      		 Brake pedal released: -1.00 to 0.00 MPa Reading increases when brake pedal is depressed
      Zero Point of M/C Memorized zero point value of master cylinder pressure sensor Min.: -12.5 MPa
      Max.: 12.4 MPa      		 - -
      Master Cylinder Sensor Temperature Master cylinder pressure sensor temperature Min.: -80°C (-112°F)
      Max.: 175°C (347°F)      		 Current master cylinder pressure sensor temperature -
      M/C Sensor Grade Master cylinder pressure sensor change (value detected by ECU) Min.: -30 MPa/s
      Max.: 225 MPa/s      		 Brake pedal released or pedal held at constant position: 0 MPa/s When brake pedal is being operated: Changes in proportion with the pedal movement speed
      Lateral G Lateral G Min.: -25.105 m/s2
      Max.: 24.908 m/s2      		 Turning right: -25.105 to 0.000 m/s2
      Turning left: 0.000 to 24.908 m/s2      		 During turning: Changes in proportion with lateral acceleration
      Forward and Rearward G Forward and rearward G Min.: -25.105 m/s2
      Max.: 24.908 m/s2      		 During deceleration: -25.105 to 0.000 m/s2
      During acceleration: 0.000 to 24.908 m/s2      		 During acceleration/deceleration: Changes in proportion with acceleration
      Zero Point of Decele2 Memorized zero point value of lateral G Min.: -25.105 m/s2
      Max.: 24.908 m/s2      		 - -
      Zero Point of Decele Memorized zero point value of forward and rearward G Min.: -25.105 m/s2
      Max.: 24.908 m/s2      		 - -
      Yaw Rate Sensor Value Yaw rate sensor value Min.: -128°/s
      Max.: 127°/s      		 Vehicle stopped: 0°/s
      Turning right: -128 to 0°/s
      Turning left: 0 to 127°/s      		 -
      Zero Point of Yaw Rate Sensor Memorized zero point value of yaw rate sensor Min.: -128°/s
      Max.: 127°/s      		 After completing zero point calibration: °/s -
      Steering Angle Value Steering sensor value Min.: -3276.8°
      Max.: 3276.7°
      Not supported: Not supported      		 Turning left: 0.0 to 3276.7°
      Turning right: -3276.8 to 0.0°      		 -
      Zero Point of Steering Angle Memorized zero point value of steering sensor Min.: -3276.8°
      Max.: 3276.7°
      Not supported: Not supported      		 - -
      MT Voltage Value ABS motor drive voltage value Min.: 0.0 V
      Max.: 25.5 V      		 - Changes in proportion to auxiliary battery voltage
      HINT: 
      This is the voltage downstream of the ABS motor as monitored by the No. 2 skid control ECU (brake actuator assembly)
      Solenoid Power Supply Voltage Solenoid power supply voltage value Min.: 0.0 V
      Max.: 25.5 V      		 - Changes in proportion to auxiliary battery voltage
      HINT: 
      This is the voltage output (which supplies power to each solenoid) from the No. 2 skid control ECU (brake actuator assembly) to the ABS solenoid relay
      Vehicle Speed Vehicle speed
      (Vehicle speed signal output to combination meter assembly)      		 Min.: 0.0 km/h (0 mph)
      Max.: 6553.5 km/h (4072 mph)      		 Vehicle stopped: 0.0 km/h (0 mph) When driving at constant speed: No large fluctuations
      Accelerator Opening Angle % Percentage of accelerator pedal opening angle Min.: 0.0%
      Max.: 127.5%      		 Accelerator pedal released: 0.0% During accelerator pedal operation: Changes in proportion with the pedal movement
      Gear Position Automatic transmission shift state fail / 1st / 2nd / 3rd / 4th / 5th / 6th / 7th / 8th / 9th / 10th / P/N / R / Not supported Actual automatic transmission shift state -
      Shift Lever Position Shift position information fail / 1st / 2nd / 3rd / 4th / 5th / 6th / B / D/M / N / P / R / No input / Not supported Actual shift position -
      TRC(TRAC)/VSC OFF Mode TRAC/VSC off mode Normal mode (TRC(TRAC) ON/VSC ON) / TRC(TRAC) OFF mode (TRC(TRAC) OFF/VSC ON) / VSC expert mode (VSC expert mode MID ON) / VSC OFF mode (TRC(TRAC) OFF/VSC OFF) Normal mode (TRC(TRAC) ON/VSC ON): Normal mode
      TRC(TRAC) OFF mode (TRC(TRAC) OFF/VSC ON): TRAC off mode
      VSC expert mode (VSC expert mode MID ON): VSC expert mode
      VSC OFF mode (TRC(TRAC) OFF/VSC OFF): VSC off mode      		 -
      Brake Hold Control Mode Brake hold control mode Out of control mode / Pressure hold mode / Pressure release mode / EPB lock mode / Not supported Out of control mode: Brake hold control system is off or brake hold control system is stand-by mode (brake hold standby indicator light is illuminated)
      Pressure hold mode: Brake hold control is operating (brake hold operated indicator light is illuminated)
      Pressure release mode: Brake hold control is released (brake hold operated indicator light not illuminated)
      EPB lock mode: Parking brake is engaged during brake hold control      		 HINT: 
      • EPB: Electric Parking Brake System
      • If the brake pedal is not depressed for 3 minutes or more after entering pressure hold mode, the system automatically changes to EPB lock mode
      FR Target Oil Pressure Front wheel RH target oil pressure Min.: 0.0 MPa
      Max.: 20.0 MPa      		 - Different according to target oil pressure of each wheel
      FL Target Oil Pressure Front wheel LH target oil pressure Min.: 0.0 MPa
      Max.: 20.0 MPa      		 - Different according to target oil pressure of each wheel
      RR Target Oil Pressure Rear wheel RH target oil pressure Min.: 0.0 MPa
      Max.: 20.0 MPa      		 - Different according to target oil pressure of each wheel
      RL Target Oil Pressure Rear wheel LH target oil pressure Min.: 0.0 MPa
      Max.: 20.0 MPa      		 - Different according to target oil pressure of each wheel
      Vehicle Speed Grade Vehicle acceleration/deceleration Min.: -25.105 m/s2
      Max.: 24.908 m/s2      		 Vehicle stopped: 0.000 m/s2
      During deceleration: -25.105 to 0.000 m/s2
      During acceleration: 0.000 to 24.908 m/s2      		 During driving: Changes in proportion with vehicle acceleration/deceleration
      Vehicle Stop Time from IG ON Time vehicle stopped after ignition switch turned to ON Min.: 0 s
      Max.: 1275 s      		 - -
      Travel Distance from IG ON Driving time after ignition switch turned to ON Min.: 0 s
      Max.: 1275 s      		 - -
      Stop Light SW Stop light switch assembly status
      (STP or STP2 terminal input)      		 OFF / ON OFF: Brake pedal released
      ON: Brake pedal depressed      		 HINT: 
      • Stop light control relay (semiconductor power integration ECU) off: STP terminal status displayed.
      • Stop light control relay (semiconductor power integration ECU) on: STP2 terminal status displayed.
      Parking Brake SW Parking brake status OFF / ON OFF: Parking brake released
      ON: Parking brake applied      		 -
      Brake Hold Switch Brake hold switch (electric parking brake switch assembly) (BH terminal input) OFF / ON OFF: Brake hold switch (electric parking brake switch assembly) OFF
      ON: Brake hold switch (electric parking brake switch assembly) ON      		 HINT: 
      The brake hold switch (electric parking brake switch assembly) state is determined using the voltage at terminal BH
      Stop Light Relay Stop light control relay (semiconductor power integration ECU) status
      (STP terminal input)      		 OFF / ON OFF: Stop light control relay (semiconductor power integration ECU) off and brake pedal released
      ON: Stop light control relay (semiconductor power integration ECU) on or brake pedal depressed      		 HINT: 
      The voltage of power supplied to the stop lights is measured at the STP terminal.
      Inspection Mode Inspection mode OFF / ON OFF: Normal mode
      ON: Inspection mode      		 -
      TRC(TRAC) Control TRAC control status Out of controlling / Under Controlling Out of controlling: Not during control
      Under Controlling: During control      		 -
      TRC(TRAC) Engine Control TRAC throttle control status Out of controlling / Under Controlling Out of controlling: Not during control
      Under Controlling: During control      		 -
      TRC(TRAC) Brake Control TRAC brake control status Out of controlling / Under Controlling Out of controlling: Not during control
      Under Controlling: During control      		 -
      FR Wheel VSC Ctrl Status Front wheel RH VSC control status Out of controlling / Under Controlling Out of controlling: Not during control
      Under Controlling: During control      		 -
      FL Wheel VSC Ctrl Status Front wheel LH VSC control status Out of controlling / Under Controlling Out of controlling: Not during control
      Under Controlling: During control      		 -
      RR Wheel VSC Ctrl Status Rear wheel RH VSC control status Out of controlling / Under Controlling Out of controlling: Not during control
      Under Controlling: During control      		 -
      RL Wheel VSC Ctrl Status Rear wheel LH VSC control status Out of controlling / Under Controlling Out of controlling: Not during control
      Under Controlling: During control      		 -
      FR Wheel ABS Ctrl Status Front wheel RH ABS control status Out of controlling / Under Controlling Out of controlling: Not during control
      Under Controlling: During control      		 -
      FL Wheel ABS Ctrl Status Front wheel LH ABS control status Out of controlling / Under Controlling Out of controlling: Not during control
      Under Controlling: During control      		 -
      RR Wheel ABS Ctrl Status Rear wheel RH ABS control status Out of controlling / Under Controlling Out of controlling: Not during control
      Under Controlling: During control      		 -
      RL Wheel ABS Ctrl Status Rear wheel LH ABS control status Out of controlling / Under Controlling Out of controlling: Not during control
      Under Controlling: During control      		 -
      BA Ctrl Status BA control status OFF / ON OFF: Not during control
      ON: During control      		 -
      PBA Ctrl Status PBA control status OFF / ON OFF: Not during control
      ON: During control      		 -
      Stop Light Relay State for ECU Control Stop light control relay (semiconductor power integration ECU) status (STPO terminal output) (for ECU control) OFF / ON OFF: Stop light control relay (semiconductor power integration ECU) off (Stop light off)
      ON: Stop light control relay (semiconductor power integration ECU) on (Stop light on)      		 -
      Solenoid State for ECU Control ABS solenoid relay status (for ECU control) OFF / ON OFF: ABS solenoid relay not operating
      ON: ABS solenoid relay operating      		 -
      Motor State for ECU Control ABS motor relay status (for ECU control) OFF / ON OFF: ABS motor relay not operating
      ON: ABS motor relay operating      		 -
      Buzzer Meter buzzer OFF / ON OFF: Buzzer off
      ON: Buzzer on      		 -
      Dealer Mode Dealer Mode (Signal Check mode or Calibration mode) status OFF / ON OFF: Normal mode
      ON: Dealer Mode (Signal Check mode or Calibration mode)      		 HINT: 
      • For details on Dealer Mode (Signal Check), refer to Signal Check*1
      • For details on Dealer Mode (Calibration), refer to Reset Memory / Calibration*2
      Zero Point Memory State of Steering Angle Sensor Steering sensor zero point memorization status Zero point is not memorized / Zero point is memorized - HINT: 
      The steering sensor zero point is acquired when the vehicle is being driven in a straight line at a speed of 35 km/h (22 mph) or more for approximately 5 seconds
      Regenerative Cooperation Regenerative cooperation OFF / ON OFF: Not operating
      ON: Operating      		 -
      TRC(TRAC)/VSC OFF SW VSC OFF switch (electric parking brake switch assembly) (CSW terminal input) OFF / ON OFF: VSC OFF switch (electric parking brake switch assembly) OFF
      ON: VSC OFF switch (electric parking brake switch assembly) ON      		 HINT: 
      The VSC OFF switch (electric parking brake switch assembly) state is determined using the voltage at terminal CSW
      IGP_PT2 IGP_PT2 status OFF / ON OFF: IGP_PT2 OFF
      ON: IGP_PT2 ON      		 -
      FR Wheel Front right wheel rotation direction Forward / Back When driving forward: forward
      When reversing: Back      		 -
      FL Wheel Front left wheel rotation direction Forward / Back When driving forward: forward
      When reversing: Back      		 -
      RR Wheel Rear right wheel rotation direction Forward / Back When driving forward: forward
      When reversing: Back      		 -
      RL Wheel Rear left wheel rotation direction Forward / Back When driving forward: forward
      When reversing: Back      		 -
      Brake Hold Ready Brake hold control permission status Not in stand-by mode / Stand-by mode Not in stand-by mode: Brake hold function not operating (brake hold standby indicator light not illuminated)
      Stand-by mode: Brake hold function stand-by state (brake hold standby indicator light illuminated)      		 -
      Stroke Sensor2 Brake pedal stroke sensor 2 Min.: 0.0 V
      Max.: 5.0 V      		 Brake pedal released: 3.6 to 4.4 V Reading decreases when brake pedal is depressed
      Quantity of Brake Pedal Stroke Brake pedal stroke amount Min.: 0 mm (0 in.)
      Max.: 255 mm (10 in.)      		 Brake pedal released: 0 mm (0 in.) Reading increases when brake pedal is depressed
      Voltage of Stroke Sensor2 Voltage of brake pedal stroke sensor 2 Min.: 0.0 V
      Max.: 5.0 V      		 - -
      FR Regenerative Request FR regenerative request torque Min.: 0 Nm
      Max.: 1048560 Nm      		 - Changes according to brake pedal force (When depressing the brake pedal lightly after reaching 30 km/h (19 mph) or more, avoiding sudden braking.)
      FR Regenerative Operation FR regenerative operation torque Min.: 0 Nm
      Max.: 1048560 Nm      		 - Changes according to brake pedal force (When depressing the brake pedal lightly after reaching 30 km/h (19 mph) or more, avoiding sudden braking.)
      Brake Pedal Stroke Change Speed Brake pedal stroke rate of change Min.: -2560 mm/s
      Max.: 2540 mm/s      		 Brake pedal released or depressed and held: 0 mm/s Brake pedal is being moved: Changes in proportion to the operation speed of the brake pedal
      VCSK Voltage Value VSK2 voltage value Min.: 0.000 V
      Max.: 5.500 V      		 4.800 to 5.200 V -
      ABS Solenoid (SRLR) Rear pressure reduction solenoid LH status OFF / ON OFF: Not operating
      ON: Operating (pressure reduction)      		 HINT: 
      The solenoid valve controls the brake fluid pressure of the wheel cylinder of the vehicle
      ABS Solenoid (SRLH) Rear pressure holding solenoid LH status OFF / ON OFF: Not operating
      ON: Operating (pressure holding)      		 HINT: 
      The solenoid valve controls the brake fluid pressure of the wheel cylinder of the vehicle
      ABS Solenoid (SRRR) Rear pressure reduction solenoid RH status OFF / ON OFF: Not operating
      ON: Operating (pressure reduction)      		 HINT: 
      The solenoid valve controls the brake fluid pressure of the wheel cylinder of the vehicle
      ABS Solenoid (SRRH) Rear pressure holding solenoid RH status OFF / ON OFF: Not operating
      ON: Operating (pressure holding)      		 HINT: 
      The solenoid valve controls the brake fluid pressure of the wheel cylinder of the vehicle
      ABS Solenoid (SFLR) Front pressure reduction solenoid LH status OFF / ON OFF: Not operating
      ON: Operating (pressure reduction)      		 HINT: 
      The solenoid valve controls the brake fluid pressure of the wheel cylinder of the vehicle
      ABS Solenoid (SFLH) Front pressure holding solenoid LH status OFF / ON OFF: Not operating
      ON: Operating (pressure holding)      		 HINT: 
      The solenoid valve controls the brake fluid pressure of the wheel cylinder of the vehicle
      ABS Solenoid (SFRR) Front pressure reduction solenoid RH status OFF / ON OFF: Not operating
      ON: Operating (pressure reduction)      		 HINT: 
      The solenoid valve controls the brake fluid pressure of the wheel cylinder of the vehicle
      ABS Solenoid (SFRH) Front pressure holding solenoid RH status OFF / ON OFF: Not operating
      ON: Operating (pressure holding)      		 HINT: 
      The solenoid valve controls the brake fluid pressure of the wheel cylinder of the vehicle
      TRC(TRAC)/VSC Solenoid (SM2) Master cylinder cut solenoid (Brake Pressure Control Solenoid "B") status OFF / ON OFF: Not operating
      ON: Operating (pressure regulation)      		 HINT: 
      Depending on the operating conditions, the master cylinder cut solenoid valves regulate the brake fluid pressure generated by the pump motor
      TRC(TRAC)/VSC Solenoid (SM1) Master cylinder cut solenoid (Brake Pressure Control Solenoid "A") status OFF / ON OFF: Not operating
      ON: Operating (pressure regulation)      		 HINT: 
      Depending on the operating conditions, the master cylinder cut solenoid valves regulate the brake fluid pressure generated by the pump motor
      ABS Motor Relay Motor relay OFF / ON OFF: Motor relay off
      ON: Motor relay on      		 -
      Solenoid Relay Solenoid relay OFF / ON OFF: Solenoid relay off
      ON: Solenoid relay on      		 -
      STPO Stop light control relay (semiconductor power integration ECU) status
      (STPO terminal output)      		 OFF / ON OFF: Stop light control relay (semiconductor power integration ECU) off (Stop light off)
      ON: Stop light control relay (semiconductor power integration ECU) on (Stop light on)      		 HINT: 
      When STPO is ON, the stop light control relay (semiconductor power integration ECU) turns ON and the stop lights illuminate
      IGR Voltage IG1 voltage value Min.: 0.0 V
      Max.: 25.5 V      		 - Changes in proportion to auxiliary battery voltage
      +BS Voltage +BS voltage value Min.: 0.0 V
      Max.: 25.5 V      		 - Changes in proportion to auxiliary battery voltage
      +BM Voltage BM voltage value Min.: 0.0 V
      Max.: 25.5 V      		 - Changes in proportion to auxiliary battery voltage
      Voltage Difference between Motor Input-Output Terminal Voltage difference between motor input-output terminal Min.: -640.00 V
      Max.: 639.98 V
      Not supported: Not supported      		 - -
      Yaw Rate Sensor 1 Higher Resolution Signal Yaw rate sensor 1 higher resolution signal Min.: -327.68 deg/sec
      Max.: 327.67 deg/sec
      Not supported: Not supported      		 Turning right: -327.68 to 0.00 deg/sec
      Turning left: 327.68 to 0.00 deg/sec      		 -
      Yaw Rate Sensor 2 Higher Resolution Signal Yaw rate sensor 2 higher resolution signal Min.: -327.68 deg/sec
      Max.: 327.67 deg/sec
      Not supported: Not supported      		 Turning right: -327.68 to 0.00 deg/sec
      Turning left: 327.68 to 0.00 deg/sec      		 -
      GL1 GX Sensor Higher Resolution Signal GL1 GX sensor higher resolution signal Min.: -32768 mG
      Max.: 32767 mG
      Not supported: Not supported      		 During deceleration: -32768 to 0 mG
      During acceleration: 0 to 32767 mG      		 -
      GL2 GY Sensor Higher Resolution Signal GL2 GY sensor higher resolution signal Min.: -32768 mG
      Max.: 32767 mG
      Not supported: Not supported      		 Turning right: -32768 to 0 mG
      Turning left: 0 to 32767 mG      		 -
      Request Acceleration of Upper Limit from Toyota Safety Sense Request acceleration of upper limit from Toyota safety sense Min.: -32.768 m/s2
      Max.: 32.767 m/s2      		 During deceleration: -32.768 to 0 m/s2
      During acceleration: 0 to 32.767 m/s2      		 -
      Request Acceleration of Lower Limit from Toyota Safety Sense Request acceleration of lower limit from Toyota safety sense Min.: -32.768 m/s2
      Max.: 32.767 m/s2      		 During deceleration: -32.768 to 0 m/s2
      During acceleration: 0 to 32.767 m/s2      		 -
      Request Acceleration and Deceleration ID of Upper Limit from Toyota Safety Sense Request acceleration and deceleration ID of upper limit from Toyota safety sense Min.: 0
      Max.: 63      		 Not during control: 0 -
      Request Acceleration and Deceleration ID of Lower Limit from Toyota Safety Sense Request acceleration and deceleration ID of lower limit from Toyota safety sense Min.: 0
      Max.: 63      		 Not during control: 0 -
      Target Acceleration of Upper Limit from Vehicle Motion Control Target acceleration of upper limit from vehicle motion control Min.: -1310.72 m/s2
      Max.: 1310.68 m/s2      		 During deceleration: -1310.72 to 0.00 m/s2
      During acceleration: 0.00 to 1310.68 m/s2      		 -
      Target Acceleration of Lower Limit from Vehicle Motion Control Target acceleration of lower limit from vehicle motion control Min.: -1310.72 m/s2
      Max.: 1310.68 m/s2      		 During deceleration: -1310.72 to 0.00 m/s2
      During acceleration: 0.00 to 1310.68 m/s2      		 -
      Target Acceleration and Deceleration ID of Upper Limit from Vehicle Motion Control Target acceleration and deceleration ID of upper limit from vehicle motion control Min.: 0
      Max.: 63      		 Not during control: 0 -
      Target Acceleration and Deceleration ID of Lower Limit from Vehicle Motion Control Target acceleration and deceleration ID of lower limit from vehicle motion control Min.: 0
      Max.: 63      		 Not during control: 0 -
      Target Driving Force of Upper Limit from Vehicle Motion Control Target driving force of upper limit from vehicle motion control Min.: -65536 N
      Max.: 65534 N
      • When the shift state is other than R (reverse)
        1. During deceleration: -65536 to 0 N
        2. During acceleration: 0 to 65534 N
      • When the shift state is R (reverse)
        1. During deceleration: 0 to 65534 N
        2. During acceleration: -65536 to 0 N
      		 -
      Target Driving Force of Lower Limit from Vehicle Motion Control Target driving force of lower limit from vehicle motion control Min.: -65536 N
      Max.: 65534 N
      • When the shift state is other than R (reverse)
        1. During deceleration: -65536 to 0 N
        2. During acceleration: 0 to 65534 N
      • When the shift state is R (reverse)
        1. During deceleration: 0 to 65534 N
        2. During acceleration: -65536 to 0 N
      		 -
      Brakes Specifications Change by C-BEST Brakes specifications change by C-BEST None / Exist - -
      SLM2 Refresh Drive Completed Status Linear solenoid (SLM2) refresh complete/incomplete Not Complete / Complete Complete: Linear solenoid (SLM2) refresh complete
      Not complete: Linear solenoid (SLM2) refresh incomplete      		 -
      Zero Point of G Sensor Learning Status G sensor zero point learning complete/incomplete Complete / Not Complete Complete: G sensor zero point learning complete
      Not complete: G sensor zero point learning incomplete      		 -
      Zero Point of Yaw Rate Sensor Learning Status Yaw rate sensor zero point learning complete/incomplete Complete / Not Complete Complete: Yaw rate sensor zero point learning complete
      Not complete: Yaw rate sensor zero point learning incomplete      		 -
      Linear Solenoid Valve Offset Learning Status Linear solenoid valve offset learning complete/incomplete Complete / Not Complete Complete: Linear solenoid valve offset learning complete
      Not complete: Linear solenoid valve offset learning incomplete      		 -
      Zero Point of Stroke Sensor Learning Status Stroke sensor zero point learning complete/incomplete Complete / Not Complete Complete: Stroke sensor zero point learning complete
      Not complete: Stroke sensor zero point learning incomplete      		 -
      System Variant Learning Status System variant learning complete/incomplete Complete / Not Complete Complete: System variant learning complete
      Not complete: System variant learning incomplete      		 -
      Drive Mode Select Customize Item EPS Available Drive mode select customize item EPS available Not Applicable / Applicable - -
      Drive Mode Select Customize Item Adaptive Variable Suspension System Available Drive mode select customize item adaptive variable suspension system available Not Applicable / Applicable - -
      Drive Mode Select Customize Item Brake Available Drive mode select customize item brake available Not Applicable / Applicable - -
      1. *1: for performing Dealer Mode (Signal Check): Refer to SIGNAL CHECK [09/2023 - ] 
      2. *2: for entering Dealer Mode (Calibration): Refer to RESET MEMORY / CALIBRATION [09/2023 - ]

      Chassis > Steering Angle Sensor > Data List 

      Tester Display Measurement Item Range Normal Condition Diagnostic Note
      Total Distance Traveled Total distance traveled Min.: 0
      Max.: 16777215      		 - -
      Total Distance Traveled - Unit Total distance traveled unit km / mile - -
      Steering Angle Signal Information Steering angle value
      (Rotation to the left side is positive)      		 Min.: -3072.0 deg
      Max.: 3070.5 deg      		 Turning left: 0.0 to 3070.5 deg
      Turning right: -3072.0 to 0.0 deg      		 During steering operation: Changes in proportion with steering wheel rotation
      Sensor Malfunction Factor (Current) Sensor malfunction factor (current) Normal / Angle Velocity / AD / Sensor Element / Steering Angle Value / Steering Angle Value of RAM Stuck - -
      Sensor Malfunction Factor (Past) Sensor malfunction factor (past) Normal / Angle Velocity / AD / Sensor Element / Steering Angle Value / Steering Angle Value of RAM Stuck - -
      Total Distance Traveled (When Sensor Malfunction occurred) Total distance traveled (when sensor malfunction occurred) Min.: 0
      Max.: 16777215      		 - -
      Total Distance Traveled - Unit (When Sensor Malfunction occurred) Total distance traveled unit (when sensor malfunction occurred) km / mile - -
  2. CHECK FOR INTERMITTENT PROBLEMS 

    HINT: 

    A momentary interruption (open circuit) in the connectors and/or wire harnesses between the sensors and ECUs can be detected using the Data List function of the GTS.

    1. Turn the ignition switch off.
    2. Connect the GTS to the DLC3.
    3. Turn the ignition switch to ON.
    4. Turn the GTS on.
    5. Enter the following menus: Chassis / Brake Booster / Data List.
    6. Enter the following menus: Chassis / Brake/EPB* / Data List.

      *: Electric Parking Brake System

    7. Follow the directions on the GTS to display the Data List and select areas where momentary interruptions should be monitored.

      HINT: 

      A momentary interruption (open circuit) cannot be detected for 3 seconds after the ignition switch is turned to ON (initial check).

      Chassis > Brake Booster > Data List 

      Tester Display Measurement Item Range Normal Condition Diagnostic Note
      Stop Switch Open Momentary interruption (open circuit) status in wire harness between No. 1 skid control ECU (brake booster with master cylinder assembly) and stop light switch assembly status Normal / Under intermittent Normal: Normal
      Under intermittent: Momentary interruption      		 -
      Stroke Open Brake pedal stroke sensor 1 open detection Normal / Under intermittent Normal: Normal
      Under intermittent: Momentary interruption      		 -
      Servo Pressure Sensor Open Servo pressure sensor open detection Normal / Under intermittent Normal: Normal
      Under intermittent: Momentary interruption      		 -
      Gap Hold Chamber Pressure Sensor Open Gap pressure sensor open detection Normal / Under intermittent Normal: Normal
      Under intermittent: Momentary interruption      		 -

      Chassis > Brake/EPB > Data List 

      Tester Display Measurement Item Range Normal Condition Diagnostic Note
      FR Speed Open Front speed sensor RH open detection Normal / Under intermittent Normal: Normal
      Under intermittent: Momentary interruption      		 -
      FL Speed Open Front speed sensor LH open detection Normal / Under intermittent Normal: Normal
      Under intermittent: Momentary interruption      		 -
      RR Speed Open Rear speed sensor RH open detection Normal / Under intermittent Normal: Normal
      Under intermittent: Momentary interruption      		 -
      RL Speed Open Rear speed sensor LH open detection Normal / Under intermittent Normal: Normal
      Under intermittent: Momentary interruption      		 -
      Yaw Rate Open Yaw rate sensor (airbag ECU assembly) open detection Normal / Under intermittent Normal: Normal
      Under intermittent: Momentary interruption      		 -
      Deceleration Open Acceleration sensor (airbag ECU assembly) open detection Normal / Under intermittent Normal: Normal
      Under intermittent: Momentary interruption      		 -
      Steering Open Steering sensor open detection Normal / Under intermittent Normal: Normal
      Under intermittent: Momentary interruption      		 -
      Master Cylinder Open Master cylinder pressure sensor open detection Normal / Under intermittent Normal: Normal
      Under intermittent: Momentary interruption      		 -
      FR Speed Sensor Voltage Open Front speed sensor RH voltage open detection Normal / Under intermittent Normal: Normal
      Under intermittent: Momentary interruption      		 -
      FL Speed Sensor Voltage Open Front speed sensor LH voltage open detection Normal / Under intermittent Normal: Normal
      Under intermittent: Momentary interruption      		 -
      RR Speed Sensor Voltage Open Rear speed sensor RH voltage open detection Normal / Under intermittent Normal: Normal
      Under intermittent: Momentary interruption      		 -
      RL Speed Sensor Voltage Open Rear speed sensor LH voltage open detection Normal / Under intermittent Normal: Normal
      Under intermittent: Momentary interruption      		 -
      M/C Pressure Sensor Noise Master cylinder pressure sensor noise detection Normal / Under intermittent Normal: Noise is not detected
      Under intermittent: Noise is detected      		 -
      Yaw Rate Sensor Voltage Open Yaw rate sensor (airbag ECU assembly) voltage open detection Normal / Under intermittent Normal: Normal
      Under intermittent: Momentary interruption      		 -
      Master Cylinder Pressure Sensor Power Supply Open Master cylinder pressure sensor power supply voltage status Normal / Under intermittent Normal: Normal
      Under intermittent: Momentary interruption      		 -
      Solenoid Power Supply Open Solenoid power supply voltage status Normal / Under intermittent Normal: Normal
      Under intermittent: Momentary interruption      		 -
      Motor Power Supply Open Motor power supply voltage status Normal / Under intermittent Normal: Normal
      Under intermittent: Momentary interruption      		 -
      Stop Switch Open Momentary interruption (open circuit) status in wire harness between No. 2 skid control ECU (brake actuator assembly) and stop light switch assembly status Normal / Under intermittent Normal: Normal
      Under intermittent: Momentary interruption      		 -
      A/C ECU Communication Open Air conditioning amplifier assembly communication open detection Normal / Under intermittent Normal: Normal
      Under intermittent: Momentary interruption      		 -
      Air Bag ECU Communication Open Airbag ECU assembly communication open detection Normal / Under intermittent Normal: Normal
      Under intermittent: Momentary interruption      		 -
      Stroke2 Open Brake pedal stroke sensor 2 open detection Normal / Under intermittent Normal: Normal
      Under intermittent: Momentary interruption      		 -
      HV Communication Open Hybrid vehicle control ECU assembly communication open detection Normal / Under intermittent Normal: Normal
      Under intermittent: Momentary interruption      		 -
      Body ECU Communication Open Main body ECU (multiplex network body ECU) communication open detection Normal / Under intermittent Normal: Normal
      Under intermittent: Momentary interruption      		 -
    8. Push the line graph button to display the line graph.
    9. Check for intermittent shorts, etc.

      OK

      Normal is displayed.

      HINT: 

      If "Under intermittent" remains displayed on the GTS, measure the resistance between the skid control ECU and each sensor or each ECU.

    10. While observing the screen, gently jiggle the connectors or wire harnesses between the ECUs and sensors, or between ECUs.

      OK

      Normal is displayed.

      HINT: 

      • If a momentary interruption occurs and Under intermittent is displayed on the GTS, Under intermittent will remain displayed on the GTS for 1 second after the circuit returns to normal.
        Fig 1: Indicates That There Has Been A Momentary Interruption
        GTY884909Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      • If the display changes, this indicates that there has been a momentary interruption (open circuit) in the connector and/or wire harness. In this case, repair or replace the connectors and/or wire harnesses as one of them is faulty.
  3. ACTIVE TEST 

    HINT: 

    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 the GTS on.
    6. Enter the following menus: Chassis / Brake Booster / Active Test.
    7. Enter the following menus: Chassis / Brake/EPB* / Active Test.

      *: Electric Parking Brake System

    8. According to the display on the GTS, perform the Active Test.
      NOTE:
      • Although the Active Test automatically turns off the actuator after approximately 5 seconds in order to protect the actuator, do not operate the actuator repeatedly without sufficient waiting time in between.
      • To protect the solenoids, do not operate the solenoids repeatedly without sufficient waiting time in between.
      • Do not depress the brake pedal when only the pressure release solenoids valves are ON.
      • Do not operate more than one solenoid at the same time, except for when operating the pressure hold solenoid and pressure release solenoid of the same wheel.

      Chassis > Brake Booster > Active Test 

      Tester Display Measurement Item Control Range Restrict Condition Diagnostic Note
      ECB Solenoid Switching solenoid (SSA, SGH) Solenoid Start (Activate)
      Solenoid SSA / SGH      		 Vehicle condition:
      • Vehicle stopped
      • Shift position is in the P or N
      • Apply the parking brake

      HINT: 
      To protect actuator and Solenoid(s), this test will continue for 25 seconds.
      • Check that the GTS display for the solenoid (SSA or SGH) changes to ON/OFF during Solenoid Start (Activate)
      • ECB: Electronically Controlled Brake System
      ECB Main Relay Main relay OFF / ON Vehicle condition: Vehicle stopped
      HINT: 
      To protect this Actuator and Solenoid, this test will only last 5 seconds.      		 ECB: Electronically Controlled Brake System
      Brake Booster Motor Brake booster motor OFF / ON Vehicle condition:
      • Vehicle stopped
      • Shift position is in the P or N
      • Apply the parking brake

      HINT: 
      To protect this Drive Circuit and Solenoid, this test will only last 10 seconds.      		 -
      Linear Solenoid (SLM1) Linear solenoid (SLM1) Solenoid Start (Activate)
      Solenoid SLM1      		 Vehicle condition:
      • Vehicle stopped
      • Shift position is in the P or N
      • Apply the parking brake

      HINT: 
      To protect this Drive Circuit and Solenoid, this test will only last 2 seconds.      		 -
      Linear Solenoid (SLM2) Linear solenoid (SLM2) Solenoid Start (Activate)
      Solenoid SLM2      		 Vehicle condition:
      • Vehicle stopped
      • Shift position is in the P or N
      • Apply the parking brake

      HINT: 
      To protect this Drive Circuit and Solenoid, this test will only last 2 seconds.      		 -

      Chassis > Brake/EPB > Active Test 

      Tester Display Measurement Item Control Range Restrict Condition Diagnostic Note
      ABS Solenoid Pressure holding solenoid (SFRH, SFLH, SRRH, SRLH)
      Pressure reduction solenoid (SFRR, SFLR, SRRR, SRLR)      		 Solenoid Start (Activate)
      Solenoid SFRH / SFLH / SRRH / SRLH / SFRR / SFLR / SRRR / SRLR      		 Vehicle condition:
      • Vehicle stopped
      • Shift position is in the P or N
      • Apply the parking brake

      HINT: 
      To protect actuator and Solenoid(s), this test will continue for 25 seconds.      		 Check that the GTS display for the solenoid (SRLR, SRLH, SRRR, SRRH, SFLR, SFLH, SFRR or SFRH) changes to ON/OFF during Solenoid Start (Activate)
      VSC Solenoid Master cylinder cut solenoid (SM1, SM2) Solenoid Start (Activate)
      Solenoid SM1 / SM2      		 Vehicle condition:
      • Vehicle stopped
      • Shift position is in the P or N
      • Apply the parking brake

      HINT: 
      To protect actuator and Solenoid(s), this test will continue for 25 seconds.      		 Check that the GTS display for the solenoid (SM1 or SM2) changes to ON/OFF during Solenoid Start (Activate)
      Motor Relay ABS motor relay OFF / ON Vehicle condition: Vehicle stopped
      HINT: 
      To protect this Actuator and Solenoid, this test will only last 5 seconds.      		 Operating sound of motor can be heard
      Solenoid Relay Solenoid relay OFF / ON Vehicle condition: Vehicle stopped
      HINT: 
      To protect this Actuator and Solenoid, this test will only last 5 seconds.      		 Perform the Active Test and check that the voltage displayed for the solenoid power supply voltage Data List item changes.
      Stop Lamp Relay Stop light control relay (semiconductor power integration ECU) OFF / ON Vehicle condition: Vehicle stopped
      HINT: 
      To protect this Actuator and Solenoid, this test will only last 5 seconds.      		 With the brake pedal released, check that the stop lights illuminate and the value of Stop Light Relay on the GTS changes to ON when Stop Lamp Relay is ON
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