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On-Vehicle Inspection

  1. CHECK 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 power switch ON (IG).
      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 the FR system solenoid (SLA**, SLR**, SMC1, SMC2).
      1. Select "SLAFR CUR". Press "→" and check the output voltage.
        NOTE: Do not depress the brake pedal.

        HINT:

        It takes approximately 35 seconds to complete the check.

        Standard voltage 

        VOLTAGE SPECIFICATION

        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

        If incorrect, troubleshoot the brake system (see PROBLEM SYMPTOMS TABLE ).

    3. Check the FL system solenoid (SLA**, SLR**, SMC1, SMC2).
      1. Select "SLAFL CUR". Press "→" and check the output voltage.
        NOTE: Do not depress the brake pedal.

        HINT:

        It takes approximately 35 seconds to complete the check.

        Standard voltage 

        VOLTAGE SPECIFICATION

        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

        If incorrect, troubleshoot the brake system (see PROBLEM SYMPTOMS TABLE ).

    4. Check the RR system solenoid (SLA**, SLR**, SMC1, SMC2).
      1. Select "SLARR CUR". Press "→" and check the output voltage.
        NOTE: Do not depress the brake pedal.

        HINT:

        It takes approximately 35 seconds to complete the check.

        Standard voltage 

        VOLTAGE SPECIFICATION

        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

        If incorrect, troubleshoot the brake system (see PROBLEM SYMPTOMS TABLE ).

    5. Check the RL system solenoid (SLA**, SLR**, SMC1, SMC2).
      1. Select "SLAFL CUR". Press "→" and check the output voltage.
        NOTE: Do not depress the brake pedal.

        HINT:

        It takes approximately 35 seconds to complete the check.

        Standard voltage 

        VOLTAGE SPECIFICATION

        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

        If incorrect, troubleshoot the brake system (see PROBLEM SYMPTOMS TABLE ).

    6. Check the changeover solenoid valves (SMC1, 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 output voltage between "MAS CYL PRS 1" and "FR PRESS SENS" is less than 0.4 V. 

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

      4. Press the return key on the intelligent tester and cancel brake control prohibition (ELECTRONICALLY CONTROLLED BRAKE SYSTEM INVALID).
  2. CHECK 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 a hydro LSPV gauge (SST) and brake pedal effort gauge.

        SST 09709-29018 

        Fig 1: Checking Pressure Sensor Operation
        G05297151Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      2. Bleed 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 power switch ON (IG).
      5. Clear the DTC (see DTC CHECK / CLEAR  ).
    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", TL PRESS SENS" and "RR PRESS SENS", "RL PRES SENS".
      2. Check the brake pedal effort gauge, hydro booster pressure gauge reading, and output pressure voltage.

        Standard voltage 

        VOLTAGE SPECIFICATION

        Brake effort N (kgf, lbf) MAS CYL PRS 1 (V) MAS CYL PRS 2 (V)
        200 (20.4, 45) 0.80 to 1.10 0.80 to 1.10
        500 (51, 112) 1.55 to 1.85 1.55 to 1.85
        VOLTAGE SPECIFICATION

        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) 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
        50 (5.1, 11) 2.6 (26.5, 377) 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

        Brake effort N (kgf, lbf) Rear right wheel hydraulic pressure MPa (kgf/cm2 , psi) RR PRESS SENS (V)
        50 (5.1, 11) 3.3 (33.6, 479) 1.05 to 1.35
        100 (10.2, 22) 5.0 (51.0, 725) 1.35 to 1.65
        100 (10.2, 22) 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

        Brake effort N (kgf, lbf) Rear left wheel hydraulic pressure MPa (kgf/cm2 , psi) RL PRESS SENS (V)
        50 (5.1, 11) 3.3 (33.6, 479) 1.05 to 1.35
        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

        If incorrect, troubleshoot the brake system (see PROBLEM SYMPTOMS TABLE ).

    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 power switch ON (IG).
      3. Turn on the intelligent tester. Select and enter the accumulator (ACC) pressure sensor 1 ("ACC PRESS SENS").
      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 PROBLEM SYMPTOMS TABLE ).

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