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Home >> Toyota >> 2024 >> Corolla LE >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 30 (Brake System (HEV) - Inspection) >> BRAKE SYSTEM (for HV Model) >> On-Vehicle Inspection [01/2019 - 09/2022] >> Procedure

On-Vehicle Inspection [01/2019 - 09/2022]: Procedure

WARNING: This page is about a different variant/trim than selected.
  1. INSPECT PRESSURE SENSOR 
    1. Check auxiliary battery voltage.

      Standard Voltage

      11 to 14 V (while the power switch is off)

    2. Set a pedal effort gauge, SST and connect the Techstream.
      1. Set a pedal effort gauge and SST.
        • SST: 09709-29018 
          1. 09709-00060
        GTY943805Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
        *a Pedal Effort Gauge
        *b SST (LSPV Gauge)
        *c SST (No. 1 Nipple)
      2. Connect the Techstream to the DLC3 with the power switch off, the shift lever in P and the parking brake applied.
      3. Turn the power switch on (IG) and turn the Techstream on.
      4. Bleed air from SST (LSPV gauge).

        Refer to PROCEDURE - Step 1

    3. Inspect the reaction force pressure and servo pressure.
      1. Enter the following menus: Chassis / ABS/VSC/TRAC / Data List / Reaction Force Pressure and Servo Pressure.

        Chassis > ABS/VSC/TRAC > Data List 

        Tester Display
        Reaction Force Pressure
        Servo Pressure
      2. Check the value output from "Reaction Force Pressure" and "Servo Pressure" by depressing the brake pedal.

        Standard Result

        Pedal Effort Reaction Force Pressure
        (MPa)        		 Servo Pressure
        (MPa)        		 Front Right Wheel Hydraulic Pressure Rear Left Wheel Hydraulic Pressure
        50 N (5 kgf, 11.2 lbf) 0.08 to 0.88 1.60 to 5.60 1.30 to 5.30 MPa (13.3 to 54.0 kgf/cm2 , 189 to 769 psi) 1.30 to 5.30 MPa (13.3 to 54.0 kgf/cm2 , 189 to 769 psi)
        100 N (10 kgf, 22.5 lbf) 0.74 to 1.54 4.52 to 8.52 4.22 to 8.22 MPa (43.0 to 83.8 kgf/cm2 , 612 to 1192 psi) 4.22 to 8.22 MPa (43.0 to 83.8 kgf/cm2 , 612 to 1192 psi)
        150 N (15 kgf, 33.7 lbf) 1.40 to 2.20 7.29 to 11.29 6.99 to 10.99 MPa (71.3 to 112.1 kgf/cm2 , 1014 to 1594 psi) 6.99 to 10.99 MPa (71.3 to 112.1 kgf/cm2 , 1014 to 1594 psi)
        200 N (20 kgf, 45.0 lbf) 2.06 to 2.86 8.79 to 12.79 8.49 to 12.49 MPa (86.6 to 127.4 kgf/cm2 , 1231 to 1811 psi) 8.49 to 12.49 MPa (86.6 to 127.4 kgf/cm2 , 1231 to 1811 psi)

        Standard Result

        Pedal Effort Reaction Force Pressure
        (MPa)        		 Servo Pressure
        (MPa)        		 Front Left Wheel Hydraulic Pressure Rear Right Wheel Hydraulic Pressure
        50 N (5 kgf, 11.2 lbf) 0.08 to 0.88 1.60 to 5.60 1.30 to 5.30 MPa (13.3 to 54.0 kgf/cm2 , 189 to 769 psi) 1.30 to 5.30 MPa (13.3 to 54.0 kgf/cm2 , 189 to 769 psi)
        100 N (10 kgf, 22.5 lbf) 0.74 to 1.54 4.52 to 8.52 4.22 to 8.22 MPa (43.0 to 83.8 kgf/cm2 , 612 to 1192 psi) 4.22 to 8.22 MPa (43.0 to 83.8 kgf/cm2 , 612 to 1192 psi)
        150 N (15 kgf, 33.7 lbf) 1.40 to 2.20 7.29 to 11.29 6.99 to 10.99 MPa (71.3 to 112.1 kgf/cm2 , 1014 to 1594 psi) 6.99 to 10.99 MPa (71.3 to 112.1 kgf/cm2 , 1014 to 1594 psi)
        200 N (20 kgf, 45.0 lbf) 2.06 to 2.86 8.79 to 12.79 8.49 to 12.49 MPa (86.6 to 127.4 kgf/cm2 , 1231 to 1811 psi) 8.49 to 12.49 MPa (86.6 to 127.4 kgf/cm2 , 1231 to 1811 psi)
    4. Remove the pedal effort gauge and SST.
      1. Remove the pedal effort gauge and SST, and bleed the brake line.

        Refer to PROCEDURE - Step 1

    5. Inspect the accumulator pressure.
      1. Enter the following menus: Chassis / ABS/VSC/TRAC / Data List / Accumulator Pressure and MT Voltage Value.

        Chassis > ABS/VSC/TRAC > Data List 

        Tester Display
        MT Voltage Value
        Accumulator Pressure
      2. While fully depressing the brake pedal 4 or 5 times, check that the MT voltage value is 10 V or more once or more.

        HINT: 

        Usually the MT voltage value is 0 V.

      3. After confirming that the booster pump motor stops, check the accumulator pressure.

        Standard Result

        15 to 21 MPa

  2. INSPECT BRAKE BOOSTER WITH MASTER CYLINDER ASSEMBLY 
    1. Check auxiliary battery voltage.

      Standard Voltage

      11 to 14 V (while the power switch is off)

    2. Set a pedal effort gauge, SST and connect the Techstream.
      1. Set a pedal effort gauge and SST.
        • SST: 09709-29018 
          1. 09709-00060
        GTY943805Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
        *a Pedal Effort Gauge
        *b SST (LSPV Gauge)
        *c SST (No. 1 Nipple)
      2. Connect the Techstream to the DLC3 with the power switch off, the shift lever in P and the parking brake applied.
      3. Turn the power switch on (IG) and turn the Techstream on.
      4. Clear the DTCs.

        Refer to DTC CHECK / CLEAR [01/2019 - 09/2022]

      5. Bleed air from SST (LSPV gauge).

        Refer to PROCEDURE - Step 1

    3. Check operation without the brake booster.
      1. Inspect and adjust the brake pedal height.

        Refer to ADJUSTMENT [01/2019 - 09/2022]

      2. Adjust the brake fluid level in the reservoir between the MIN line and fluid level support line.
        GTY892111Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
        *a Fluid Level Support Line
        *b MIN Line
      3. Turn the Techstream on and enter the following menus: Chassis / ABS/VSC/TRAC / Utility / ECB (Electronically Controlled Brake system) Utility.

        Chassis > ABS/VSC/TRAC > Utility 

        Tester Display
        ECB Utility
      4. Select "Motor Invalid" on the "ECB (Electronically Controlled Brake system) Utility" screen.
      5. Perform "Motor Invalid" according to the display on the Techstream.
      6. Depress the brake pedal 40 times or more to return all the fluid in the accumulator back to the reservoir.

        HINT: 

        A buzzer may sound due to low accumulator pressure. As this is not a malfunction, continue the procedure.

      7. Check that the brake pedal is firm.
      8. Enter the following menus: Chassis / ABS/VSC/TRAC / Data List / Stroke Sensor and Stroke Sensor 2.

        Chassis > ABS/VSC/TRAC > Data List 

        Tester Display
        Stroke Sensor
        Stroke Sensor2
      9. Check the values output from "Stroke Sensor" and "Stroke Sensor 2" by depressing the brake pedal.

        Standard Result

        Pedal Effort Stroke Sensor
        (V)        		 Stroke Sensor 2
        (V)        		 Front Right Wheel Hydraulic Pressure Rear Left Wheel Hydraulic Pressure
        200 N (20 kgf, 45.0 lbf) 1.14 to 1.84 3.14 to 3.86 0.03 to 2.03 MPa (0.3 to 20.7 kgf/cm2 , 4.4 to 294 psi) 0.03 to 2.03 MPa (0.3 to 20.7 kgf/cm2 , 4.4 to 294 psi)
        500 N (51 kgf, 112.4 lbf) 1.31 to 2.01 2.99 to 3.69 2.00 to 4.00 MPa (20.4 to 40.8 kgf/cm2 , 290 to 580 psi) 2.00 to 4.00 MPa (20.4 to 40.8 kgf/cm2 , 290 to 580 psi)

        Standard Result

        Pedal Effort Stroke Sensor
        (V)        		 Stroke Sensor 2
        (V)        		 Front Left Wheel Hydraulic Pressure Rear Right Wheel Hydraulic Pressure
        200 N (20 kgf, 45.0 lbf) 1.14 to 1.84 3.14 to 3.86 0.03 to 2.03 MPa (0.3 to 20.7 kgf/cm2 , 4.4 to 294 psi) 0.03 to 2.03 MPa (0.3 to 20.7 kgf/cm2 , 4.4 to 294 psi)
        500 N (51 kgf, 112.4 lbf) 1.31 to 2.01 2.99 to 3.69 2.00 to 4.00 MPa (20.4 to 40.8 kgf/cm2 , 290 to 580 psi) 2.00 to 4.00 MPa (20.4 to 40.8 kgf/cm2 , 290 to 580 psi)
      10. Remove the pedal effort gauge and SST, and bleed the brake system.

        Refer to PROCEDURE - Step 1

      11. Enter the following menus: Chassis / ABS/VSC/TRAC / Data List / Accumulator Pressure, and check the output pressure.

        Chassis > ABS/VSC/TRAC > Data List 

        Tester Display
        Accumulator Pressure

        Standard Result

        15 to 21 MPa

      12. Clear the DTCs.

        Refer to DTC CHECK / CLEAR [01/2019 - 09/2022]

  3. INSPECT STROKE SIMULATOR 
    1. Check auxiliary battery voltage.

      Standard Voltage

      11 to 14 V (while the power switch is off)

    2. Connect the Techstream and set a pedal effort gauge.
      1. Set a pedal effort gauge.
      2. Connect the Techstream to the DLC3 with the power switch off, the shift lever in P and the parking brake applied.
      3. Turn the power switch on (IG) and turn the Techstream on.
      4. Clear the DTCs.

        Refer to DTC CHECK / CLEAR [01/2019 - 09/2022]

    3. Check operation with the brake booster.
      1. Turn the power switch on (IG).
      2. Enter the following menus: Chassis / ABS/VSC/TRAC / Data List / Stroke Sensor and Stroke Sensor 2.

        Chassis > ABS/VSC/TRAC > Data List 

        Tester Display
        Stroke Sensor
        Stroke Sensor2
      3. Depress the brake pedal 4 or 5 times.
      4. Check the values output from "Stroke Sensor" and "Stroke Sensor 2" by depressing the brake pedal.

        Standard Voltage

        Pedal Effort Stroke Sensor
        (V)        		 Stroke Sensor 2
        (V)
        50 N (5 kgf, 11.2 lbf) 1.05 to 1.75 3.25 to 3.95
        100 N (10 kgf, 22.5 lbf) 1.18 to 1.88 3.12 to 3.82
        150 N (15 kgf, 33.7 lbf) 1.28 to 1.98 3.02 to 3.72
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