89420H
1.INSPECT VACUUM SENSOR ASSEMBLY
Start the engine.
Turn the ignition switch off.
Compare the "Brake Boost Pressure" values before and after the brake pedal was depressed 5 times.
| Tester Display |
|---|
| Brake Boost Pressure |
Internal pressure changes by 20 kPa (150 mmHg, 5.91 in.Hg) or more.
Standard atmospheric pressure is 101 kPa (758 mmHg, 29.8 in.Hg).
For every 100 m (328 ft.) increase in altitude, atmospheric pressure drops by 1 kPa (8 mmHg, 0.295 in.Hg).
Atmospheric pressure varies with weather.