Intake System: Inspection

WARNING: This page is about a different car, the 2007 Toyota Tacoma. However, it is still accessible from the selected car via links, so may be relevant.

INSPECT INTAKE AIR SURGE TANK
1. Inspect the diaphragm.
  1. Check that the lever moves when a vacuum of 26.6 kPa (200 mmHg) is applied with the Vacuum gage on.
  2. Check that the vacuum of 26.6 kPa (200 mmHg) is sustained for 1 minute in the above state.
    
    Fig 1: Inspecting Intake Air Surge Tank
    Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

INSPECT NO. 1 VACUUM SWITCHING VALVE ASSEMBLY

Check the resistance.

Using an ohmmeter, measure the resistance between the terminals.

Standard

RESISTANCE AND TERMINALS SPECIFICATION

Tester Connection	Specified Condition
1 - 2	37 to 44 Ω at 20°C (68°F)

If the result is not as specified, replace the vacuum switching valve No. 1.

Fig 2: Measuring Resistance Between Terminals Using Ohmmeter

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Check the vacuum switching valve No. 1 for ground.

Using an ohmmeter, measure the resistance between each terminal and the body.

Standard

RESISTANCE AND TERMINALS SPECIFICATION

Tester Connection	Specified Condition
1 - Body	10 kΩ or higher
2 - Body	10 kΩ or higher

If the result is not as specified, replace the vacuum switching valve No. 1.

Fig 3: Measuring Resistance Between Each Terminal & Body Using Ohmmeter

Check the operation.
1. Check that air does not flow from port E to port F.
  If the operation is not as specified, replace the vacuum switching valve No. 1.
  
  Fig 4: Checking If Air Does Not Flow From E To F Port
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Apply battery voltage across the terminals.
3. Check that air flows from port E to port F.
  If the operation is not as specified, replace the vacuum switching valve No. 1.
  
  Fig 5: Checking If Air Flows From E To F Port
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002