VACUUM SENSOR ASSEMBLY ON-VEHICLE INSPECTION

PROCEDURE

1. INSPECT VACUUM SENSOR

   
   

   1. Connect the GTS to the DLC3.

   2. Start the engine.

   3. Turn the engine switch off.

   4. Turn the engine switch on (IG).

   5. Turn the GTS on.

   6. Enter the following menus: Chassis / ABS/VSC/TRC / Data List / Brake Boost Pressure.

      
      Chassis > ABS/VSC/TRC > Data List

      Tester Display
      Brake Booster Pressure

   7. Compare the "Brake Boost Pressure" values before and after the brake pedal is 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.