Tacoma PreRunner L4-2.7L (2TR-FE) (2005)
Brake Master Cylinder: Testing and Inspection
BRAKE MASTER CYLINDER ASSEMBLY (W/ VSC)
ON-VEHICLE INSPECTION
1. CHECK BRAKE MASTER CYLINDER FLUID PRESSURE CHANGE
a. Inspect the battery positive voltage.
Battery positive voltage: 10 to 14 V
b. Turn the ignition switch to OFF, and depress the brake pedal more than 20 times.
HINT: When pressure in the accumulator is released, the reaction force becomes lighter and the stroke becomes longer.
c. Install a LSPV gauge (SST) and brake pedal effort gauge, and bleed the air.
SST 09709-29018
d. When the booster does not operate:
(1) Depress the brake pedal and check the fluid pressure.
At 245 N (25 kgf, 55 ft. lbs.)
At 343 N (35 kgf, 77 ft. lbs.)
e. When the booster operates:
(1) Turn the ignition switch to ON, and wait until the pump motor has stopped.
HINT: Pump operating sound can be heard.
(2) Turn the ignition switch to OFF, and depress the brake pedal more than 20 times.
HINT: When pressure in the accumulator is released, the reaction force becomes lighter and the stroke becomes longer.
(3) Repeat (1) and (2) 5 times.
(4) Turn the ignition switch to ON, and check that the pump stops after approximately 8 to 14 seconds.
NOTICE: If the pump does not stop, repeat step (3) again.