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On-Vehicle Inspection

  1. INSPECT BRAKE ACTUATOR 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 PRS 1", "MAS CYL PRS 2", "FR PRESS SENS", "FL PRESS SENS", "RR PRESS SENS" and "RL PRESS SENS".
    2. Check FR system solenoid (SLA**, SLR**, SMC1, SMC2)
      1. Select "SLAFR CUR". → Set the current to 1.2 A. → 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 PROBLEM SYMPTOMS TABLE  ).

        Standard output voltage 

        STANDARD 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
    3. Check FL system solenoid (SLA**, SLR**, SMC1, SMC2)
      1. Select "SLAFL CUR". → Set the current to 1.2 A. → 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 PROBLEM SYMPTOMS TABLE  ).

        Standard output voltage 

        STANDARD 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
    4. Check RR system solenoid (SLA**, SLR**, SMC1, SMC2)
      1. Select "SLARR CUR". → Set the current to 1.2 A. → 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 PROBLEM SYMPTOMS TABLE  ).

        Standard output voltage 

        STANDARD 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
    5. Check RL system solenoid (SLA**, SLR**, SMC1, SMC2)
      1. Select "SLARL CUR". → Set the current to 1.2 A. → 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 PROBLEM SYMPTOMS TABLE  ).

        Standard output voltage 

        STANDARD 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
    6. Check SMC1, SMC2
      1. Select and enter "ELECTRONICALLY CONTROLLED BRAKE SYSTEM INVALID" to prohibit the brake control (ELECTRONICALLY CONTROLLED BRAKE SYSTEM) on the intelligent tester menu screen.
      2. Check that the ELECTRONICALLY CONTROLLED BRAKE SYSTEM warning light comes on.
      3. Check the output voltage by depressing the brake pedal.

        Standard difference in output voltage 

        STANDARD VOLTAGE SPECIFICATION

        Sensor Specified Condition
        Between "MAS CYL PRES 1" and "FR PRESS SENS" Less than 0.4 V
        Between "MAS CYL PRES 2" and "FL PRESS SENS" 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. INSPECT PRESSURE SENSOR OPERATION 
    1. Check battery voltage.

      Standard battery voltage: 

      10 to 14 V (during engine stop) 

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

        SST 09709-29018 

      2. Bleed the air out of the hydro booster pressure gauge.
      3. Move the shift lever to the P position. Connect 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  ).
        Fig 1: Connecting Hydro Booster Pressure Gauge
        G05189344Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    3. Check 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 PRESS SENS".
      2. Check the brake effort, pressure gauge reading, and output pressure voltage.

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

        Standard output voltage 

        STANDARD VOLTAGE SPECIFICATION

        Brake effort N (kgf, lbf) MAS CYL PRS 1 (V) MAS CYL PRS 2 (V)
        200 (20.4, 45) 0.9 to 1.2 0.9 to 1.2
        500 (51, 112) 1.7 to 2.2 1.7 to 2.2
        STANDARD VOLTAGE SPECIFICATION

        Brake effort N (kgf, lbf) Front right wheel hydraulic pressure MPa (kgf/cm2 , psi) FR PRESS SENS (V)
        50 (5.1, 11) 3.6 (36.4, 518) 1.15 to 1.35
        100 (10.2, 22) 6.9 (70.0, 996) 1.8 to 2.0
        150 (15.3, 34) 9.1 (93.3,1, 327) 2.25 to 2.45
        200 (20.4, 45) 11.4 (115.9, 1, 648) 2.65 to 2.95
        50 (5.1, 11) 3.6 (36.4, 518) 1.15 to 1.35
        100 (10.2, 22) 6.9 (70.0, 996) 1.8 to 2.0
        150 (15.3, 34) 9.1 (93.3, 1, 327) 2.25 to 2.45
        200 (20.4, 45) 11.4 (115.9, 1, 648) 2.65 to 2.95
        STANDARD VOLTAGE SPECIFICATION

        Brake effort N (kgf, lbf) Rear right wheel hydraulic pressure MPa (kgf/cm2 , psi) RR PRESS SENS (V)
        50 (5.1, 11) 3.9 (39.4, 560) 1.2 to 1.4
        100 (10.2, 22) 4 (40.8, 580) 1.25 to 1.5
        150 (15.3, 34) 4 (40.8, 580) 1.25 to 1.5
        200 (20.4, 45) 4 (40.8, 580) 1.25 to 1.5
        STANDARD VOLTAGE SPECIFICATION

        Brake effort N (kgf, lbf) Rear left wheel hydraulic pressure MPa (kgf/cm2 , psi) RL PRESS SENS (V)
        50 (5.1, 11) 3.9 (39.4, 560) 1.2 to 1.4
        100 (10.2, 22) 4 (40.8, 580) 1.25 to 1.5
        150 (15.3, 34) 4 (40.8, 580) 1.25 to 1.5
        200 (20.4, 45) 4 (40.8, 580) 1.25 to 1.5
    4. Check accumulator (ACC) pressure sensor.
      1. Move the shift lever to the P position. Apply the parking brake and connect the intelligent tester.
      2. Turn the power switch ON (IG).
      3. Turn on the intelligent tester. Select the accumulator (ACC) pressure sensor 1 ("ACC PRESS SENS").
      4. Temporarily operate the pump motor by depressing the brake pedal 4 to 5 times.
      5. After confirming that the pump motor stops, check the pressure output voltage.

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

        Standard output voltage: 

        2.6 to 3.8 V 

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