350Z V6-3.5L (VQ35) (2003)
Vacuum Brake Booster: Testing and Inspection
On-Vehicle Service
OPERATING CHECK
With the engine stopped, change the vacuum to the atmospheric pressure by depressing the brake pedal several times. Then with brake pedal fully
depressed, start the engine and when the vacuum pressure reaches the standard, check that the clearance between the brake pedal and floor panel
decreases.
CAUTION: Depressing pedal interval is approximately 5 seconds.
AIRTIGHT CHECK
Testing Brake Booster
^
Run the engine at idle for approximately 1 minute, and stop it after applying vacuum to the booster. Depress the brake pedal normally to change
the vacuum to the atmospheric pressure. Check that distance between the brake pedal and floor panel gradually increases.
^
Depress brake pedal while engine is running, and stop engine with pedal depressed. The pedal stroke should not change after holding pedal down
for 30 seconds.
CAUTION: Depressing pedal interval is approximately 5 seconds.