Component Tests and General Diagnostics
BRAKE SYSTEM (OTHER): BRAKE SYSTEM: ON-VEHICLE INSPECTION
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
(a) Check battery voltage.
Standard voltage:
11 to 14 V (while the power switch is off)
(b) Set a pedal effort gauge, SST (LSPV gauge) and connect the Techstream.
(1) Set a pedal effort gauge and SST (LSPV gauge).
SST : 09709-29018
Text in Illustration
(2) Bleed air from SST (LSPV gauge) Service and Repair.
(3) Connect the Techstream to the DLC3 with the power switch off, park (P) selected and the parking brake applied.
(4) Turn the power switch on (IG) and turn the Techstream on.
(5) Clear the DTCs Reading and Clearing Diagnostic Trouble Codes.
(c) Inspect the wheel cylinder pressure sensor and regulator pressure sensor.
(1) Enter the following menus: Chassis / ABS/VSC/TRC / Active Test / Power Supply Air Bleeding Pattern 1.
(2) Select "Wheel Cylinder Pressure Sensor" and "Regulator Pressure Sensor Output".
(3) Check the value output from "Wheel Cylinder Pressure Sensor" and "Pressure Regulator Sensor Output" by depressing the brake pedal.
Standard Result:
Standard Result:
(4) After inspection, turn "Power Supply Air Bleeding Pattern 1" off.
(d) Remove a pedal effort gauge and SST (LSPV gauge).
(1) Remove a pedal effort gauge and SST (LSPV gauge), and bleed brake line Service and Repair.
(e) Inspect the accumulator sensor.
(1) Enter the following menus: Chassis / ABS/VSC/TRAC / 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
(a) Check battery voltage.
Standard voltage:
11 to 14 V (while the power switch is off)
(b) 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, park (P) selected and the parking brake applied.
(3) Turn the power switch on (IG) and turn the Techstream on.
(4) Clear the DTCs Reading and Clearing Diagnostic Trouble Codes.
(c) Check operation without the brake booster.
(1) Inspect and adjust the brake pedal height Adjustments.
(2) Adjust the brake fluid level in the reservoir between MIN line and fluid level support line.
Text in Illustration
(3) Turn the Techstream on and enter the following menus: Chassis / ABS/VSC/TRAC / 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/TRAC / 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:
(6) Turn the power switch off to finish "Zero Down".
(7) Turn the power switch on (IG) and wait at least 20 seconds, then enter the following menus: Chassis / ABS/VSC/TRAC / Data List "Accumulator Sensor", and check the output voltage.
Standard voltage:
2.9 to 4.2 V
3. INSPECT STROKE SIMULATOR
(a) Check battery voltage.
Standard voltage:
11 to 14 V (while the power switch is off)
(b) 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, park (P) selected and the parking brake applied.
(3) Turn the power switch on (IG) and turn the Techstream on.
(4) Clear the DTCs Reading and Clearing Diagnostic Trouble Codes.
(c) 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".
(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:
