FJ Cruiser 2WD V6-4.0L (1GR-FE) (2008)
Hydraulic Brake Booster: Testing and Inspection
On-Vehicle Inspection
BRAKE: HYDRAULIC BRAKE BOOSTER:
ON-VEHICLE INSPECTION
1. INSPECT BRAKE MASTER CYLINDER FLUID PRESSURE CHANGE
(a) Inspect the positive battery voltage.
Standard voltage:
11 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 lbf):
At 343 N (35 kgf, 77 lbf):
(e) When the booster operates:
(1) Turn the ignition switch to ON, and wait until the pump motor has stopped (step A).
HINT: Pump operating sound can be heard.
(2) Turn the ignition switch to OFF, and depress the brake pedal more than 20 times (step B).
HINT: When the pressure in the accumulator is released, the reaction force becomes lighter and the stroke becomes longer.
(3) Repeat steps A and B 5 times (step C).
(4) Turn the ignition switch to ON, and check that the pump stops after approximately 8 to 14 seconds.
NOTE: If the pump does not stop, repeat step C again.
(5) Depress the brake pedal and check the fluid pressure.
At 49 N (5 kgf, 11 lbf):
At 98 N (10 kgf, 22 lbf):