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GSIC - Global Service Information Center

BRAKE SYSTEM > ON-VEHICLE INSPECTION

for Preparation Click here

NOTICE:

A DTC may be stored during the inspection procedure. Be sure to clear the DTC and check that a normal system code is output after the inspection is finished.

1. INSPECT PRESSURE SENSOR

Check battery voltage.
Standard voltage:
11 to 14 V (while the power switch is off)

Set a pedal effort gauge, SST (LSPV gauge) and connect the intelligent tester.
1. Set a pedal effort gauge and SST (LSPV gauge).
  SST
  09709-29018
  Text in Illustration
  *1
  Pedal Effort Gauge
  *2
  SST (LSPV Gauge)
2. Bleed air from SST (LSPV gauge) (Click here).
3. Connect the intelligent tester to the DLC3 with the power switch off, park (P) selected and parking brake applied.
4. Turn the power switch on (IG) and turn the intelligent tester on.
5. Clear the DTCs (Click here).

Text in Illustration
*1	Pedal Effort Gauge
*2	SST (LSPV Gauge)

Inspect wheel cylinder pressure sensor and regulator pressure sensor.

Enter the following menus: Chassis / ABS/VSC/TRC / Active Test / Power Supply Air Bleeding Pattern 1.
Select "Wheel Cylinder Pressure Sensor" and "Regulator Pressure Sensor Output".

Check the value output from "Wheel Cylinder Pressure Sensor" and "Regulator Pressure Sensor Output" by depressing the brake pedal.

Standard Result:

Pedal Effort N (kgf, lbf)	Regulator Pressure Sensor Output (V)	Rear Right Wheel Hydraulic Pressure (MPa (kgf/cm², psi))	Rear Left Wheel Hydraulic Pressure (MPa (kgf/cm², psi))
50 (5, 11.2)	0.52 to 1.32	0.0 to 4.0 (0.0 to 40.7, 0 to 580)	0.0 to 4.0 (0.0 to 40.7, 0 to 580)
100 (10, 22.5)	1.35 to 2.15	4.1 to 8.1 (41.8 to 82.5, 595 to 1174)	4.1 to 8.1 (41.8 to 82.5, 595 to 1174)
150 (15, 33.7)	2.17 to 2.97	8.15 to 12.15 (83.1 to 123.8, 1182 to 1762)	8.15 to 12.15 (83.1 to 123.8, 1182 to 1762)
200 (20, 45.0)	3.00 to 3.80	12.20 to 16.20 (124.4 to 165.1, 1770 to 2349)	12.20 to 16.20 (124.4 to 165.1, 1770 to 2349)

Standard Result:

Pedal Effort N (kgf, lbf)	Wheel Cylinder Pressure Sensor (V)	Front Right Wheel Hydraulic Pressure (MPa (kgf/cm², psi))	Front Left Wheel Hydraulic Pressure (MPa (kgf/cm², psi))
50 (5, 11.2)	0.46 to 1.26	0.0 to 3.76 (0.0 to 38.3, 0 to 545)	0.0 to 3.76 (0.0 to 38.3, 0 to 545)
100 (10, 22.5)	1.17 to 1.97	3.22 to 7.22 (32.8 to 73.6, 467 to 1047)	3.22 to 7.22 (32.8 to 73.6, 467 to 1047)
150 (15, 33.7)	1.87 to 2.67	6.69 to 10.69 (68.2 to 109.0, 970 to 1550)	6.69 to 10.69 (68.2 to 109.0, 970 to 1550)
200 (20, 45.0)	2.58 to 3.38	10.13 to 14.13 (103.3 to 144.0, 1469 to 2049)	10.13 to 14.13 (103.3 to 144.0, 1469 to 2049)

After inspection, turn "Power Supply Air Bleeding Pattern 1" off.

Inspect accumulator sensor.
1. Enter the following menus: Chassis / ABS/VSC/TRC / Data List "Accumulator Sensor".
2. Depress the brake pedal 4 or 5 times and operate the booster pump motor.
3. After confirming that the booster pump motor stops, check the output voltage.
  Standard voltage:
  2.9 to 4.2 V

2. INSPECT BRAKE BOOSTER WITH MASTER CYLINDER ASSEMBLY

Check battery voltage.
Standard voltage:
11 to 14 V (while the power switch is off)

Connect the intelligent tester and set a pedal effort gauge.
1. Set a pedal effort gauge.
2. Connect the intelligent tester to the DLC3 with the power switch off, park (P) selected and parking brake applied.
3. Turn the power switch on (IG) and turn the intelligent tester on.
4. Clear the DTCs (Click here).

Check operation without the brake booster.
1. Inspect and adjust the brake pedal height.
  HINT:
  1. for LHD: Click here
  2. for RHD: Click here
2. Adjust the brake fluid level in the reservoir between MIN line and fluid level support line.
  Text in Illustration
  *1
  Fluid Level Support Line
  *2
  MIN Line
3. Turn the intelligent tester on and enter the following menus: Chassis / ABS/VSC/TRC / Utility / ECB (Electronically Controlled Brake system) Utility / Zero Down.
  NOTICE:
  Go to the next step without turning the power switch off.
4. Enter the following menus: Chassis / ABS/VSC/TRC / Data List "Wheel Cylinder Pressure Sensor", "Stroke Sensor" and "Stroke Sensor 2".
5. Check the value output from "Wheel Cylinder Pressure Sensor", "Stroke Sensor" and "Stroke Sensor 2" by depressing the brake pedal.
  
  Standard Voltage:
  
  Pedal Effort
  N (kgf, lbf)
  Wheel Cylinder Pressure Sensor
  (V)
  Stroke Sensor
  (V)
  Stroke Sensor 2
  (V)
  200 (20, 45.0)
  0.453 to 1.253
  0.98 to 1.68
  3.32 to 4.02
  500 (51, 112.4)
  0.982 to 1.782
  1.15 to 1.86
  3.14 to 3.84
6. Turn the power switch off to finish "Zero Down".
7. Turn the power switch on and wait at 20 seconds, then enter the following menus: Chassis / ABS/VSC/TRC / Data List "Accumulator Sensor", and check the output voltage.
  Standard voltage:
  2.9 to 4.2 V

Text in Illustration
*1	Fluid Level Support Line
*2	MIN Line

3. INSPECT STROKE SIMULATOR

Check battery voltage.
Standard voltage:
11 to 14 V (while the power switch is off)

Connect the intelligent tester and set a pedal effort gauge.
1. Set a pedal effort gauge.
2. Connect the intelligent tester to the DLC3 with the power switch off, park (P) selected and parking brake applied.
3. Turn the power switch on (IG) and turn the intelligent tester on.
4. Clear the DTCs (Click here).

Check operation with the brake booster.
1. Turn the power switch on (IG).
2. Enter the following menus: Chassis / ABS/VSC/TRC / Data List "Stroke Sensor" and "Stroke Sensor 2".
3. Depress the brake pedal 4 or 5 times.
4. Check the value output from "Stroke Sensor" and "Stroke Sensor 2" by depressing the brake pedal.
  
  Standard Voltage:
  
  Pedal Effort
  N (kgf, lbf)
  Stroke Sensor
  (V)
  Stroke Sensor 2
  (V)
  50 (5, 11.2)
  1.03 to 1.73
  3.26 to 3.96
  100 (10, 22.4)
  1.26 to 1.96
  3.04 to 3.74
  150 (15, 34.0)
  1.30 to 2.00
  3.00 to 3.70

Pedal Effort N (kgf, lbf)	Wheel Cylinder Pressure Sensor (V)	Stroke Sensor (V)	Stroke Sensor 2 (V)
200 (20, 45.0)	0.453 to 1.253	0.98 to 1.68	3.32 to 4.02
500 (51, 112.4)	0.982 to 1.782	1.15 to 1.86	3.14 to 3.84