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On-Vehicle Inspection

  1. INSPECT BRAKE ACTUATOR ASSEMBLY OPERATION 
    1. Pre-check preparation
      1. Move the shift lever to the P position. Apply the parking brake and connect the intelligent tester to the DLC3.
      2. Turn the ignition switch to the ON position.
      3. Turn on the intelligent tester. Select "MAS CYL PRS1", "MAS CYL PRS2", "FR PRESS SENS", "FL PRESS SENS" and "RL PRESS SENS".
    2. Check FR system solenoids (SLA**, SLR**, SMC1, SMC2).
      1. Select "SLAFR CUR". → Enter and check the output voltage.
      NOTE: Do not depress the brake pedal.

      HINT:

      • It takes approximately 35 seconds to complete the check.
      • If incorrect, troubleshoot the brake system. (See SYSTEM DIAGRAM )

      Standard voltage: 

      VOLTAGE SPECIFICATION CHART

      Sensor 10 to 20 sec. after check start (V) 35 sec. or more after check start (V)
      MAS CYL PRS 1 0.3 to 0.7 0.3 to 0.7
      MAS CYL PRS 2 0.3 to 0.7 0.3 to 0.7
      FR PRESS SENS 2.5 to 4.5 0.3 to 0.7
      FL PRESS SENS 0.3 to 0.7 0.3 to 0.7
      RR PRESS SENS 0.3 to 0.7 0.3 to 0.7
      RL PRESS SENS 0.3 to 0.7 0.3 to 0.7
    3. Check FL system solenoids (SLA**, SLR**, SMC1, SMC2).
      1. Select "SLAFL CUR". → Enter and check the output voltage.
      NOTE: Do not depress the brake pedal.

      HINT:

      • It takes approximately 35 seconds to complete the check.
      • If incorrect, troubleshoot the brake system. (See SYSTEM DIAGRAM )

      Standard voltage: 

      VOLTAGE SPECIFICATION CHART

      Sensor 10 to 20 sec. after check start (V) 35 sec. or more after check start (V)
      MAS CYL PRS 1 0.3 to 0.7 0.3 to 0.7
      MAS CYL PRS 2 0.3 to 0.7 0.3 to 0.7
      FR PRESS SENS 0.3 to 0.7 0.3 to 0.7
      FL PRESS SENS 2.5 to 4.5 0.3 to 0.7
      RR PRESS SENS 0.3 to 0.7 0.3 to 0.7
      RL PRESS SENS 0.3 to 0.7 0.3 to 0.7
    4. Check RR system solenoids (SLA**, SLR**, SMC1, SMC2).
      1. Select "SLARR CUR". → Enter and check the output voltage.
      NOTE: Do not depress the brake pedal.

      HINT:

      • It takes approximately 35 seconds to complete the check.
      • If incorrect, troubleshoot the brake system. (See SYSTEM DIAGRAM )

      Standard voltage: 

      VOLTAGE SPECIFICATION CHART

      Sensor 10 to 20 sec. after check start (V) 35 sec. or more after check start (V)
      MAS CYL PRS 1 0.3 to 0.7 0.3 to 0.7
      MAS CYL PRS 2 0.3 to 0.7 0.3 to 0.7
      FR PRESS SENS 0.3 to 0.7 0.3 to 0.7
      FL PRESS SENS 0.3 to 0.7 0.3 to 0.7
      RR PRESS SENS 2.5 to 4.5 0.3 to 0.7
      RL PRESS SENS 0.3 to 0.7 0.3 to 0.7
    5. Check RL system solenoids (SLA**, SLR**, SMC1, SMC2).
      1. Select "SLAFL CUR". → Enter and check the output voltage.
      NOTE: Do not depress the brake pedal.

      HINT:

      • It takes approximately 35 seconds to complete the check.
      • If incorrect, troubleshoot the brake system. (See SYSTEM DIAGRAM )

      Standard voltage: 

      VOLTAGE SPECIFICATION CHART

      Sensor 10 to 20 sec. after check start (V) 35 sec. or more after check start (V)
      MAS CYL PRS 1 0.3 to 0.7 0.3 to 0.7
      MAS CYL PRS 2 0.3 to 0.7 0.3 to 0.7
      FR PRESS SENS 0.3 to 0.7 0.3 to 0.7
      FL PRESS SENS 0.3 to 0.7 0.3 to 0.7
      RR PRESS SENS 0.3 to 0.7 0.3 to 0.7
      RL PRESS SENS 2.5 to 4.5 0.3 to 0.7
    6. Check SMC1 and SMC2.
      1. Select and enter "ELECTRONICALLY CONTROLLED BRAKE SYSTEM INVALID" on the intelligent tester menu screen to prohibit the brake control.
      2. Check that the brake control warning light comes on.
      3. Check the output voltage by depressing the pedal.

        Standard Voltage: Difference in the output voltage between "MAS CYL PRS 1" and "FR PRESS SENS" is less than 0.4 V. 

        Standard Voltage: Difference in the output voltage between "MAS CYL PRS 2" and "FL PRESS SENS" is less than 0.4 V. 

      4. Enter the return key on the intelligent tester and cancel brake control prohibition (ELECTRONICALLY CONTROLLED BRAKE SYSTEM INVALID).
  2. INSPECT PRESSURE SENSOR OPERATION 
    1. Check the battery voltage

      Standard voltage: 10 to 14 V (during engine stop) 

    2. Connect the hydro booster pressure gauge and pedal effort gauge.
      1. Install the hydro LSPV gauge (SST) and brake pedal effort gauge.

        SST 09709-29018 

        Fig 1: Checking Brake Pedal Effort Gauge, Hydro Booster Pressure Gauge Reading, And Output Pressure Voltage
        G05276946Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.
      2. Bleed the air from the hydro booster pressure gauge.
      3. Move the shift lever to the P position. Connect the intelligent tester to the DLC3 with the parking brake applied.
      4. Turn the ignition switch to the ON position.
      5. Clear the DTC.
    3. Check the wheel cylinder pressure sensor and master pressure sensor.
      1. Turn on the intelligent tester. Select "MAS CYL PRS 1", "MAS CYL PRS 2", "FR PRESS SENS", "FL PRESS SENS", "RR PRESS SENS", and "RL PRES SENS".
      2. Check the brake pedal effort gauge, hydro booster pressure gauge reading, and output pressure voltage. If incorrect, troubleshoot the brake system. (See SYSTEM DIAGRAM )

      Standard voltage: 

      VOLTAGE SPECIFICATION CHART

      Brake effort N (kgf, lbf) MAS CYL PRS 1 (V) MAS CYL PRS 2 (V)
      200 (20.4, 45) 0.85 to 1.15 0.85 to 1.15
      500 (51, 112) 1.85 to 2.15 1.85 to 2.15
      VOLTAGE SPECIFICATION CHART

      Brake effort N (kgf, lbf) Front right wheel hydraulic pressure MPa (kgf/cm2 , psi) FR PRESS SENS (V)
      50 (5.1, 11) 2.6 (26.5, 377) 0.85 to 1.15
      100 (10.2, 22) 6.3 (64.3, 914) 1.6 to 1.9
      150 (15.3, 34) 8.1 (82.6, 1175) 1.95 to 2.25
      200 (20.4, 45) 8.2 (83.6, 1189) 2.0 to 2.3
      VOLTAGE SPECIFICATION CHART

      Brake effort N (kgf, lbf) Front left wheel hydraulic pressure MPa (kgf/cm2 , psi) FL PRESS SENS (V)
      50 (5.1, 11) 2.6 (26.5, 377) 0.85 to 1.15
      100 (10.2, 22) 6.3 (64.3, 914) 1.6 to 1.9
      150 (15.3, 34) 8.1 (82.6, 1175) 1.95 to 2.25
      200 (20.4, 45) 8.2 (83.6, 1189) 2.0 to 2.3
      VOLTAGE SPECIFICATION CHART

      Brake effort N (kgf, lbf) Rear right wheel hydraulic pressure MPa (kgf/cm2 , psi) RR PRESS SENS (V)
      50 (5.1, 11) 2.7 (27.5, 392) 0.85 to 1.15
      100 (10.2, 22) 5.0 (51.0,725) 1.35 to 1.65
      150 (15.3, 34) 5.0 (51.0, 725) 1.35 to 1.65
      200 (20.4, 45) 5.0 (51.0, 725) 1.35 to 1.65
      VOLTAGE SPECIFICATION CHART

      Brake effort N (kgf, lbf) Rear left wheel hydraulic pressure MPa (kgf/cm2 , psi) RL PRESS SENS (V)
      50 (5.1,11) 2.7 (27.5, 392) 0.85 to 1.15
      100 (10.2, 22) 5.0 (51.0, 725) 1.35 to 1.65
      150 (15.3, 34) 5.0 (51.0, 725) 1.35 to 1.65
      200 (20.4, 45) 5.0 (51.0, 725) 1.35 to 1.65
    4. Check the accumulator (ACC) pressure sensor.
      1. Move the shift lever to the P position. Apply the parking brake and connect the intelligent tester to the DLC3.
      2. Turn the ignition switch to the ON position.
      3. Turn on the intelligent tester. Select and enter the accumulator (ACC) pressure sensor 1 ("ACC PRESS SENS") into the date monitor.
      4. Temporarily operate the pump motor by depressing the brake pedal 4 or 5 times.
      5. After confirming that the pump motor stops, check the pressure output voltage.

        Standard voltage: 2.6 to 3.8 V 

        If incorrect, troubleshoot the brake system. (See SYSTEM DIAGRAM )

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