ELECTRONICALLY CONTROLLED BRAKE SYSTEM DATA LIST / ACTIVE TEST

  1. DATA LIST

    Tech Tips

    Using the Techstream 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 power switch off.

    3. Connect the Techstream to the DLC3.

    4. Turn the power switch on (IG).

    5. Turn the Techstream on.

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

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

      ABS/VSC/TRAC
      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

      		 -
      ECB* Warning Light Brake warning light / yellow (minor malfunction) / ON or OFF

      ON: Warning light on

      OFF: Warning light off

      		 -
      Buzzer Meter buzzer / ON or OFF

      ON: Buzzer on

      OFF: Buzzer off

      		 -
      Stop Light SW Stop light switch assembly / ON or OFF

      ON: Brake pedal depressed

      OFF: Brake pedal released

      		 -
      Parking Brake SW Parking brake switch assembly / ON or OFF

      ON: Parking brake applied

      OFF: Parking brake released

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

      ON: Reservoir level low

      OFF: Reservoir level normal

      		 -
      Main Idle SW Main idle switch / ON or OFF

      ON: Accelerator pedal released

      OFF: Accelerator pedal depressed

      		 -
      Shift Lever Position Shift position information / Fail, 1st-6th/B, D/M, "P,N" or R Actual shift position -
      Inspection Mode Inspection mode / Other or Inspect

      Other: Normal mode

      Inspect: Inspection mode

      		 -
      Regulator Pressure Sensor Output Regulator pressure sensor output / Min.: 0.00 V, Max.: 5.00 V When brake pedal released: 0.10 to 0.90 V Reading increases when brake pedal is depressed
      Stroke Sensor Brake pedal stroke sensor assembly / Min.: 0.00 V, Max.: 5.00 V When brake pedal released: 0.65 to 1.35 V Reading increases when brake pedal is depressed
      Voltage of Stroke Sensor Voltage of brake pedal stroke sensor assembly / Min.: -2.50 V, Max.: 2.49 V - -
      Stroke Sensor2 Brake pedal stroke sensor assembly 2 / Min.: 0.00 V, Max.: 5.00 V When brake pedal released: 3.65 to 4.35 V Reading decreases when brake pedal is depressed
      Voltage of Stroke Sensor2 Voltage of brake pedal stroke sensor assembly 2 / Min.: -2.50 V, Max.: 2.49 V - -
      Accumulator Sensor Accumulator pressure sensor / Min.: 0.00 V, Max.: 5.00 V Specified value: 2.90 to 4.20 V When brake fluid is stored in the accumulator: Accumulator pressure changes in accordance with volume of fluid stored in the accumulator
      Deceleration Sensor

      Acceleration sensor 1 / Min.: -18.525 m/s2, Max.: 18.387 m/s2

      		- During deceleration/acceleration: Changes continuously
      Zero Point of Decele

      Memorized zero value / Min.: -25.10 m/s2, Max.: 24.90 m/s2

      		- -
      Deceleration Sensor2

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

      		- During deceleration/acceleration: Changes continuously
      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

      Vehicle stationary: 0°/s

      Turning right: -128 to 0°/s

      Turning left: 0 to 127°/s

      		 -
      Zero Point of Yaw Rate Memorized zero value / Min.: -128°, Max.: 127° - After completing zero point calibration: 0°
      Yaw Rate Sensor2 Yaw rate sensor 2 / Min.: -128°/s, Max.: 127°/s

      Vehicle stationary: 0°/s

      Turning right: -128 to 0°/s

      Turning left: 0 to 127°/s

      		 -
      Zero Point of Yaw Rate2 Memorized zero value / Min.: -128°/s, Max.: 127°/s - After completing zero point calibration: 0°/s
      Steering Angle Sensor Steering angle sensor / Min.: -3276.8°, Max.: 3276.7°

      Turning left: Increases

      Turning right: Decreases

      		 -
      Zero Point of Steering Angle Memorized zero value / Min.: -3276.8°, Max.: 3276.7° - After clearing zero point calibration: 0°
      Lateral G

      Lateral G / Min.: -25.10 m/s2, Max.: 24.90 m/s2

      		- During turning: Changes in proportion with lateral acceleration
      Forward and Rearward G

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

      		- During acceleration/deceleration: Changes in proportion with acceleration
      Yaw Rate Value Yaw rate value / Min.: -128°/s, Max.: 127°/s - During turning: Changes in proportion with yaw
      Steering Angle Value Steering angle value / Min.: -3276.8°, Max.: 3276.7° - During steering operation: Changes in proportion with steering wheel rotation
      Slip Indicator Light Slip indicator light / ON or OFF

      ON: Indicator light on

      OFF: Indicator light off

      		 -
      FR Wheel Speed Front speed sensor RH / Min.: 0 km/h (0 mph), Max.: 326 km/h (202 mph) Vehicle stopped: 0 km/h (0 mph) When driving at constant speed: No large fluctuations
      FL Wheel Speed Front speed sensor LH / Min.: 0 km/h (0 mph), Max.: 326 km/h (202 mph) Vehicle stopped: 0 km/h (0 mph) When driving at constant speed: No large fluctuations
      RR Wheel Speed Rear speed sensor RH / Min.: 0 km/h (0 mph), Max.: 326 km/h (202 mph) Vehicle stopped: 0 km/h (0 mph) When driving at constant speed: No large fluctuations
      RL Wheel Speed Rear speed sensor LH / Min.: 0 km/h (0 mph), Max.: 326 km/h (202 mph) Vehicle stopped: 0 km/h (0 mph) When driving at constant speed: No large fluctuations
      Vehicle Speed Maximum wheel speed sensor / Min.: 0 km/h (0 mph), Max.: 326 km/h (202 mph) Vehicle stopped: 0 km/h (0 mph) When driving at constant speed: No large fluctuations
      FR Wheel Acceleration

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

      		- During deceleration/acceleration: Changes continuously
      FL Wheel Acceleration

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

      		- During deceleration/acceleration: Changes continuously
      RR Wheel Acceleration

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

      		- During deceleration/acceleration: Changes continuously
      RL Wheel Acceleration

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

      		- During deceleration/acceleration: Changes continuously
      Stop Light Relay Output Stop light control relay (STOP relay) output / ON or OFF

      ON: Relay output on

      OFF: Relay output off

      		 -
      EBS Relay Stop light control relay (Emergency brake signal) / ON or OFF OFF No change
      FR Wheel ABS Ctrl Status Front wheel RH ABS control status / ON or OFF ON: During control -
      FL Wheel ABS Ctrl Status Front wheel LH ABS control status / ON or OFF ON: During control -
      RR Wheel ABS Ctrl Status Rear wheel RH ABS control status / ON or OFF ON: During control -
      RL Wheel ABS Ctrl Status Rear wheel LH ABS control status / ON or OFF ON: During control -
      RR Wheel EBD Ctrl Status Rear wheel RH EBD control status / ON or OFF ON: During control -
      RL Wheel EBD Ctrl Status Rear wheel LH EBD control status / ON or OFF ON: During control -
      BA Ctrl Status BA control status / ON or OFF ON: During control -
      PBA Ctrl Status PBA control status / ON or OFF OFF No change
      TRC(TRAC) Ctrl Status TR(A)C control status / ON or OFF ON: During control -
      TRC(TRAC) Engine Ctrl Status TR(A)C engine control status / ON or OFF ON: During control -
      TRC(TRAC) Brake Ctrl Status TR(A)C brake control status / ON or OFF ON: During control -
      FR Wheel VSC Ctrl Status Front wheel RH VSC control status / ON or OFF ON: During control -
      FL Wheel VSC Ctrl Status Front wheel LH VSC control status / ON or OFF ON: During control -
      RR Wheel VSC Ctrl Status Rear wheel RH VSC control status / ON or OFF ON: During control -
      RL Wheel VSC Ctrl Status Rear wheel LH VSC control status / ON or OFF ON: During control -
      Accelerator Opening Angle % The difference of a present accelerator / Min.: 0.0%, Max.: 128.0% When the accelerator pedal released: 0.0% During accelerator pedal operation: Changes in proportion with the pedal movement
      Regenerative Cooperation Regenerative cooperation / ON or OFF

      ON: Operate

      OFF: Not operate

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

      ON: Relay on

      OFF: Relay off

      		 -
      ECB* Main Relay ABS main relay / ON or OFF

      ON: Relay on

      OFF: Relay off

      		 -
      ABS Solenoid (SFRH) Holding solenoid valve (FRH) / ON or OFF

      ON: Operate

      OFF: Not operate

      		 -
      ABS Solenoid (SFRR) Reduction solenoid valve (FRR) / ON or OFF

      ON: Operate

      OFF: Not operate

      		 -
      ABS Solenoid (SFLH) Holding solenoid valve (FLH) / ON or OFF

      ON: Operate

      OFF: Not operate

      		 -
      ABS Solenoid (SFLR) Reduction solenoid valve (FLR) / ON or OFF

      ON: Operate

      OFF: Not operate

      		 -
      ABS Solenoid (SRRH) Holding solenoid valve (RRH) / ON or OFF

      ON: Operate

      OFF: Not operate

      		 -
      ABS Solenoid (SRRR) Reduction solenoid valve (RRR) / ON or OFF

      ON: Operate

      OFF: Not operate

      		 -
      ABS Solenoid (SRLH) Holding solenoid valve (RLH) / ON or OFF

      ON: Operate

      OFF: Not operate

      		 -
      ABS Solenoid (SRLR) Reduction solenoid valve (RLR) / ON or OFF

      ON: Operate

      OFF: Not operate

      		 -
      ECB* Solenoid (SRC) Regulator cut solenoid valve (SRC) / ON or OFF

      ON: Operate

      OFF: Not operate

      		 -
      ECB* Solenoid (SCC) Switching solenoid valve (SCC) / ON or OFF

      ON: Operate

      OFF: Not operate

      		 -
      ECB* Solenoid (SMC) Master cut solenoid valve (SMC) / ON or OFF

      ON: Operate

      OFF: Not operate

      		 -
      ECB* Solenoid (SSC) Simulator cut solenoid valve (SSC) / ON or OFF

      ON: Operate

      OFF: Not operate

      		 -
      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

      		 -
      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 Regulator pressure sensor open detection / Error or Normal

      Error: Momentary interruption

      Normal: Normal

      		 -
      Stroke Open Brake pedal stroke sensor assembly open detection / Error or Normal

      Error: Momentary interruption

      Normal: Normal

      		 -
      FR Wheel Cylinder Open Wheel cylinder pressure sensor 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

      		 -
      HV Communication Open Hybrid vehicle communication open detection / Error or Normal

      Error: Momentary interruption

      Normal: Normal

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

      Normal: Normal mode

      TRC OFF: TR(A)C off mode

      Unknown: Unspecified

      VSC OFF: VSC off mode

      		 -
      Number of DTC Number of DTC / Min.: 0, Max.: 255 - Number of DTC output is displayed
      Wheel Cylinder Pressure Sensor Wheel cylinder pressure sensor / Min.: 0.00 V, Max.: 5.00 V When brake pedal released: 0.10 to 0.90 V Reading increases when brake pedal is depressed
      Regulator Pressure Sensor Output After Filter Regulator pressure sensor output after filter / Min.: -1.00 MPa, Max.: 23.99 MPa - -
      Regulator Pressure Sensor Variation Regulator pressure sensor variation / Min.: -30 MPa/s, Max.: 225 MPa/s - -
      SLA Solenoid Current Linear solenoid additional valve (SLA) current / Min.: 0.00 A, Max.: 3.00 A When brake pedal released: 0.00 A -
      SLR Solenoid Current Linear solenoid reduction valve (SLR) current / Min.: 0.00 A, Max.: 3.00 A When brake pedal released: 0.00 A -
      SSC Solenoid Current Simulator cut solenoid valve (SSC) current / Min.: 0.00 A, Max.: 3.00 A When brake pedal released: 0.00 A -
      SCC Solenoid Current Switching solenoid valve (SCC) current / Min.: 0.00 A, Max.: 3.00 A When brake pedal released: 0.00 A -
      SMC Solenoid Current Master cut solenoid valve (SMC) current / Min.: 0.00 A, Max.: 3.00 A When brake pedal released: 0.00 A -
      SRC Solenoid Current Regulator cut solenoid valve (SRC) current / Min.: 0.00 A, Max.: 3.00 A When brake pedal released: 0.00 A -
      DSS Signal Buzzer Skid control buzzer / ON or OFF OFF No change

      *: Electronically Controlled Brake System

  2. ACTIVE TEST

    Tech Tips

    Using the Techstream to perform Active Tests allows relays, VSVs, actuators and other items to be operated without removing any parts to operate 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 power switch off.

    3. Connect the Techstream to the DLC3.

    4. Turn the power switch on (IG).

    5. Turn the Techstream on.

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

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

      ABS/VSC/TRAC
      Tester Display Test Part Control Range Diagnostic Note
      ABS Warning Light ABS warning light Warning light ON/OFF Observe combination meter assembly
      Brake Warning Light Brake warning light / red (malfunction) Warning light ON/OFF Observe combination meter assembly
      ECB* Warning Light Brake warning light / yellow (minor malfunction) Warning light ON/OFF Observe combination meter assembly
      Buzzer Meter buzzer Buzzer ON/OFF Buzzer can be heard
      Stop Light Relay Stop light control relay (STOP relay) Relay ON/OFF Stop lights come on
      ECB* Main Relay ABS main relay Relay ON/OFF -
      ECB* Motor Relay ABS motor relay Relay ON/OFF -
      ABS Solenoid (SRLR) Reduction solenoid valve (RLR) Solenoid ON/OFF -
      ABS Solenoid (SRLH) Holding solenoid valve (RLH) Solenoid ON/OFF -
      ABS Solenoid (SRRR) Reduction solenoid valve (RRR) Solenoid ON/OFF -
      ABS Solenoid (SRRH) Holding solenoid valve (RRH) Solenoid ON/OFF -
      ABS Solenoid (SFLR) Reduction solenoid valve (FLR) Solenoid ON/OFF -
      ABS Solenoid (SFLH) Holding solenoid valve (FLH) Solenoid ON/OFF -
      ABS Solenoid (SFRR) Reduction solenoid valve (FRR) Solenoid ON/OFF -
      ABS Solenoid (SFRH) Holding solenoid valve (FRH) Solenoid ON/OFF -
      ECB* Control Invalid Electronically controlled brake system control invalid Control invalid ON/OFF Electronically controlled brake system control is disabled (braking with no accumulator assist)
      Accumulator Zero Down Reduction of pressure in accumulator Activation ON/OFF Brake fluid in the accumulator makes noise
      Actuator Air Bleeding Pattern Actuator air bleeding pattern activation Activation ON/OFF When accumulator pressure drops, pump operation creates sound
      Power Supply Air Bleeding Pattern1 Power supply air bleeding pattern activation 1 Activation ON/OFF When accumulator pressure drops, pump operation creates sound
      Power Supply Air Bleeding Pattern2 Power supply air bleeding pattern activation 2 Activation ON/OFF When accumulator pressure drops, pump operation creates sound
      TRC(TRAC) OFF Indicator Light TR(A)C OFF indicator light Indicator light ON/OFF Observe combination meter assembly
      VSC OFF Indicator Light VSC OFF indicator light Indicator light ON/OFF Observe combination meter assembly
      Slip Indicator Light Slip indicator light Indicator light ON/OFF Observe combination meter assembly
      EBS Relay - Relay ON/OFF No change
      ECB* Solenoid (SLR) Valve Close Linear solenoid reduction valve (SLR) Valve close ON/OFF -
      ECB* Solenoid (SLA) Valve Close Linear solenoid additional valve (SLA) Valve close ON/OFF -
      Stroke Simulator Cut Valve Pattern Simulator cut solenoid valve (SSC) Pattern activation ON/OFF (Difficult to identify visually)
      ECB* Solenoid (SRC) Regulator cut solenoid valve (SRC) Solenoid ON/OFF Operation sound of solenoid (clicking sound) can be heard
      ECB* Solenoid (SMC) Master cut solenoid valve (SMC) Solenoid ON/OFF Operation sound of solenoid (clicking sound) can be heard
      ECB* Solenoid (SCC) Switching solenoid valve (SCC) Solenoid ON/OFF Operation sound of solenoid (clicking sound) can be heard
      ECB* Solenoid (SSC) Simulator cut solenoid valve (SSC) Solenoid ON/OFF Operation sound of solenoid (clicking sound) can be heard
      ECB* Solenoid (SMC/SRC/SCC) Switching solenoid valve (SMC/SRC/SCC) Solenoid ON/OFF Operation sound of solenoid (clicking sound) can be heard
      ABS Solenoid Solenoid valve (FRH, FRR, FLH, FLR, RRH, RRR, RLH or RLR) Solenoid SFRH/SFRR/SFLH/ SFLR/SRRH/SRRR/SRLH/SRLR Operation sound of solenoid (clicking sound) can be heard
      DSS Signal Buzzer - Buzzer ON/OFF No change

      *: Electronically Controlled Brake System