Intake Air Control System: Inspection

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 Diaphragm Using Vacuum Gauge
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INSPECT VACUUM SWITCHING VALVE ASSY NO.1

Check the resistance.

Using an ohmmeter, measure the resistance between the terminals.

Standard:

STANDARD TESTER CONNECTION SPECIFIED CONDITION

Tester Connection	Specified Condition
1-2	37 to 44 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

G03084052

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:

STANDARD TESTER CONNECTION SPECIFIED CONDITION

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

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

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

G03084053

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

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 Air Does Not Flow From Port E To Port F
  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: Applying Battery Voltage Across Terminals
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002