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On-Vehicle Inspection

  1. CHECK BRAKE ACTUATOR ASSEMBLY OPERATION 
    1. Move the shift lever to the P position. Apply the parking brake and connect the Techstream to the DLC3.
    2. Turn the engine switch on (IG).
    3. Turn on the Techstream.
    4. Enter the following menus: Chassis / ABS/VSC/TRAC / Active Test / Actuator Air Bleeding Pattern / Data List / Master Cylinder Sensor, Master Cylinder Sensor 2, FR W/C Sensor, FL W/C Sensor, RR W/C Sensor, RL W/C Sensor.
    5. Turn on the Actuator Air Bleeding Pattern test, and check the solenoid (SLA##, SLR##, Electronically Controlled Brake System Solenoid (SMC1), Electronically Controlled Brake System Solenoid (SMC2)).
      NOTE:

      Do not depress the brake pedal.

      HINT: 

      • It takes approximately 70 seconds to complete the check.
      • The sensors will be checked one by one within the 70 second time period.
      • If incorrect, troubleshoot the brake system. Refer to PROBLEM SYMPTOMS TABLE .
      1. Check the FR W/C Sensor output voltage.

        Standard voltage

        Sensor After starting check (V) 10 to 20 sec. after starting check (V)
        Master Cylinder Sensor 0.3 to 0.7 0.3 to 0.7
        Master Cylinder Sensor 2 0.3 to 0.7 0.3 to 0.7
        FR W/C Sensor 2.5 to 4.5 0.3 to 0.7
        FL W/C Sensor 0.3 to 0.7 0.3 to 0.7
        RR W/C Sensor 0.3 to 0.7 0.3 to 0.7
        RL W/C Sensor 0.3 to 0.7 0.3 to 0.7
      2. Check the FL W/C Sensor output voltage.

        Standard voltage

        Sensor After starting check (V) 10 to 20 sec. after starting check (V)
        Master Cylinder Sensor 0.3 to 0.7 0.3 to 0.7
        Master Cylinder Sensor 2 0.3 to 0.7 0.3 to 0.7
        FR W/C Sensor 0.3 to 0.7 0.3 to 0.7
        FL W/C Sensor 2.5 to 4.5 0.3 to 0.7
        RR W/C Sensor 0.3 to 0.7 0.3 to 0.7
        RL W/C Sensor 0.3 to 0.7 0.3 to 0.7
      3. Check the RR W/C Sensor output voltage.

        Standard voltage

        Sensor After starting check (V) 10 to 20 sec. after starting check (V)
        Master Cylinder Sensor 0.3 to 0.7 0.3 to 0.7
        Master Cylinder Sensor 2 0.3 to 0.7 0.3 to 0.7
        FR W/C Sensor 0.3 to 0.7 0.3 to 0.7
        FL W/C Sensor 0.3 to 0.7 0.3 to 0.7
        RR W/C Sensor 2.5 to 4.7 0.3 to 0.7
        RL W/C Sensor 0.3 to 0.7 0.3 to 0.7
      4. Check the RL W/C Sensor output voltage.

        Standard voltage

        Sensor After starting check (V) 10 to 20 sec. after starting check (V)
        Master Cylinder Sensor 0.3 to 0.7 0.3 to 0.7
        Master Cylinder Sensor 2 0.3 to 0.7 0.3 to 0.7
        FR W/C Sensor 0.3 to 0.7 0.3 to 0.7
        FL W/C Sensor 0.3 to 0.7 0.3 to 0.7
        RR W/C Sensor 0.3 to 0.7 0.3 to 0.7
        RL W/C Sensor 2.5 to 4.7 0.3 to 0.7
    6. Check SMC1, SMC2
      1. Select: Chassis / ABS/VSC/TRAC / Electronically Controlled Brake Utility / Electronically Controlled Brake Invalid / enter Electronically Controlled Brake system Invalid to prohibit the brake control.
      2. Check that the brake control warning light comes on.
      3. Select: Chassis / ABS/VSC/TRAC / Data List / Master Cylinder Sensor, Master Cylinder Sensor 2, FR W/C Sensor and FL W/C Sensor.
      4. Check the output voltage by depressing the brake pedal.

        Standard voltage

        Difference in output voltage between "Master Cylinder Sensor" and "FR W/C Sensor" is less than 0.4 V.

        Difference in output voltage between "Master Cylinder Sensor 2" and "FL W/C Sensor" is less than 0.4 V.

      5. Select: Chassis / ABS/VSC/TRAC / Electronically Controlled Brake Utility / Electronically Controlled Brake Invalid to cancel brake control prohibition (ELECTRONICALLY CONTROLLED BRAKE SYSTEM INVALID).
  2. CHECK PRESSURE SENSOR OPERATION 
    1. Check the battery voltage.

      Standard voltage

      11 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.
        Fig 1: Checking Pressure Sensor Operation
        GTY278885Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
        • SST: 09709-29018 
      2. Bleed the air from the hydro booster pressure gauge.
      3. Move the shift lever to the P position. Connect the Techstream to the DLC3 with the parking brake applied.
      4. Turn the engine switch on (IG).
      5. Clear the DTC. Refer to DTC CHECK / CLEAR .
    3. Check the wheel cylinder pressure sensor and master pressure sensor.
      1. Turn on the Techstream. Select: Chassis / ABS/ VSC/TRAC / Data List / Master Cylinder Sensor, Master Cylinder Sensor 2, FR W/C Sensor, FL W/C Sensor, RR W/C Sensor, and RL W/C Sensor.
      2. Check the brake pedal effort gauge, hydro booster pressure gauge reading, and output pressure voltage. If incorrect, troubleshoot the brake system. Refer to PROBLEM SYMPTOMS TABLE .

        Standard voltage

        Brake effort N (kgf, lbf) Master Cylinder Sensor (V) Master Cylinder Sensor 2 (V)
        200 (20.4, 45.0) 0.75 to 1.35 0.75 to 1.35
        500 (51, 112.4) 2.05 to 2.45 2.05 to 2.45

        Standard voltage (17 inch brake caliper)

        Brake effort N (kgf, lbf) Front Right Wheel Hydraulic Pressure MPa (kgf/cm2 , psi) FR W/C Sensor (V)
        50 (5.1, 11.2) 1.47 to 3.43 (15 to 34.9, 214 to 497) 0.80 to 1.20
        100 (10.2, 22.4) 4.41 to 6.37 (45 to 64.9, 640 to 923) 1.40 to 1.80
        150 (15.3, 34.0) 4.41 to 6.37 (45 to 64.9, 640 to 923) 1.40 to 1.80
        200 (20.4, 45.0) 4.9 to 6.86 (50 to 69.9, 711 to 994) 1.50 to 1.90

        Standard voltage (18 inch, 19 inch brake caliper)

        Brake effort N (kgf, lbf) Front Right Wheel Hydraulic Pressure MPa (kgf/cm2 , psi) FR W/C Sensor (V)
        50 (5.1, 11.2) 0.74 to 2.69 (7.5 to 27.4, 107 to 390) 0.65 to 1.05
        100 (10.2, 22.4) 3.19 to 5.14 (32.5 to 52.4, 462 to 746) 1.15 to 1.55
        150 (15.3, 34.0) 3.19 to 5.14 (32.5 to 52.4, 462 to 746) 1.15 to 1.55
        200 (20.4, 45.0) 3.43 to 5.39 (35 to 54.9, 498 to 781) 1.20 to 1.60

        Standard voltage (17 inch brake caliper)

        Brake effort N (kgf, lbf) Front Left Wheel Hydraulic Pressure MPa (kgf/cm2 , psi) FL W/C Sensor (V)
        50 (5.1, 11.2) 1.47 to 3.43 (15 to 34.9, 214 to 497) 0.80 to 1.20
        100 (10.2, 22.4) 4.41 to 6.37 (45 to 64.9, 640 to 923) 1.40 to 1.80
        150 (15.3, 34.0) 4.41 to 6.37 (45 to 64.9, 640 to 923) 1.40 to 1.80
        200 (20.4, 45.0) 4.9 to 6.86 (50 to 69.9, 711 to 994) 1.50 to 1.90

        Standard voltage (18 inch, 19 inch brake caliper)

        Brake effort N (kgf, lbf) Front Left Wheel Hydraulic Pressure MPa (kgf/cm2 , psi) FL W/C Sensor (V)
        50 (5.1, 11.2) 0.74 to 2.69 (7.5 to 27.4, 107 to 390) 0.65 to 1.05
        100 (10.2, 22.4) 3.19 to 5.14 (32.5 to 52.4, 462 to 746) 1.15 to 1.55
        150 (15.3, 34.0) 3.19 to 5.14 (32.5 to 52.4, 462 to 746) 1.15 to 1.55
        200 (20.4, 45.0) 3.43 to 5.39 (35 to 54.9, 498 to 781) 1.20 to 1.60

        Standard voltage (17 inch brake caliper)

        Brake effort N (kgf, lbf) Rear Right Wheel Hydraulic Pressure MPa (kgf/cm2 , psi) RR W/C Sensor (V)
        50 (5.1, 11.2) 1.47 to 3.43 (15 to 34.9, 214 to 497) 0.80 to 1.20
        100 (10.2, 22.4) 4.41 to 6.37 (45 to 64.9, 640 to 923) 1.40 to 1.80
        150 (15.3, 34.0) 4.41 to 6.37 (45 to 64.9, 640 to 923) 1.40 to 1.80
        200 (20.4, 45.0) 4.9 to 6.86 (50 to 69.9, 711 to 994) 1.50 to 1.90

        Standard voltage (18 inch, 19 inch brake caliper)

        Brake effort N (kgf, lbf) Rear Right Wheel Hydraulic Pressure MPa (kgf/cm2 , psi) RR W/C Sensor (V)
        50 (5.1, 11.2) 0.74 to 2.69 (7.5 to 27.4, 107 to 390) 0.65 to 1.05
        100 (10.2, 22.4) 3.19 to 5.14 (32.5 to 52.4, 462 to 746) 1.15 to 1.55
        150 (15.3, 34.0) 3.19 to 5.14 (32.5 to 52.4, 462 to 746) 1.15 to 1.55
        200 (20.4, 45.0) 3.43 to 5.39 (35 to 54.9, 498 to 781) 1.20 to 1.60

        Standard voltage (17 inch brake caliper)

        Brake effort N (kgf, lbf) Rear Left Wheel Hydraulic Pressure MPa (kgf/cm2 , psi) RL W/C Sensor (V)
        50 (5.1, 11.2) 1.47 to 3.43 (15 to 34.9, 214 to 497) 0.80 to 1.20
        100 (10.2, 22.4) 4.41 to 6.37 (45 to 64.9, 640 to 923) 1.40 to 1.80
        150 (15.3, 34.0) 4.41 to 6.37 (45 to 64.9, 640 to 923) 1.40 to 1.80
        200 (20.4, 45.0) 4.9 to 6.86 (50 to 69.9, 711 to 994) 1.50 to 1.90

        Standard voltage (18 inch, 19 inch brake caliper)

        Brake effort N (kgf, lbf) Rear Left Wheel Hydraulic Pressure MPa (kgf/cm2 , psi) RL W/C Sensor (V)
        50 (5.1, 11.2) 0.74 to 2.69 (7.5 to 27.4, 107 to 390) 0.65 to 1.05
        100 (10.2, 22.4) 3.19 to 5.14 (32.5 to 52.4, 462 to 746) 1.15 to 1.55
        150 (15.3, 34.0) 3.19 to 5.14 (32.5 to 52.4, 462 to 746) 1.15 to 1.55
        200 (20.4, 45.0) 3.43 to 5.39 (35 to 54.9, 498 to 781) 1.20 to 1.60
    4. Check the accumulator (ACC) pressure sensor.
      1. Move the shift lever to the P position. Apply the parking brake and connect the Techstream to the DLC3.
      2. Turn the engine switch on (IG).
      3. Turn on the Techstream. Select: Chassis / ABS/ VSC/TRAC / Data List / the Accumulator Sensor.
      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 output voltage.

        Standard voltage

        2.6 to 3.8 V

        If incorrect, troubleshoot the brake system. Refer to PROBLEM SYMPTOMS TABLE .

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