ES 250 V6-2.5L (2VZ-FE) (1991)
Vacuum Brake Booster: Testing and Inspection
Operating Check
Fig. 5 Booster Operating Check
1. Depress brake pedal several times with engine stopped and ensure pedal reserve distance does not change, Fig. 5.
2. Depress brake pedal and start engine. If pedal drops slightly, operation is normal.