VACUUM SENSOR ASSEMBLY ON-VEHICLE INSPECTION

PROCEDURE

1. INSPECT VACUUM SENSOR ASSEMBLY

   
   

   1. Warm up the engine.

   2. Turn the engine switch off.

   3. Connect the GTS to the DLC3.

   4. Start the engine.

   5. Turn the GTS on.

   6. Enter the following menus: Powertrain / Stop and Start / Data List / Brake Boost Pressure.

      
      Powertrain > Stop and Start > Data List

      Tester Display
      Brake Boost Pressure

   7. Compare the "Brake Boost Pressure" values before and after the brake pedal was depressed 5 times.

      Standard
      Internal pressure changes by 20 kPa (150 mmHg, 5.91 in.Hg) or more.

      Tech Tips

      
      

      • 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.