Intake Air Control System: Inspection

WARNING: This page is about a different car, the 2008 Toyota Camry Solara. However, it is still accessible from the selected car via links, so may be relevant.

INSPECT INTAKE AIR CONTROL VALVE ASSEMBLY NO.3
1. Apply 26.7 kPa (200 mmHg, 7.9 in.Hg) of vacuum to the actuator. Check if the valve rotates open, as shown in the illustration.
2. Apply the vacuum for 1 minute. The actuator should continue to be keeping the valve open.
  If the result is not as specified, replace the I AC valve assembly No. 3.
  
  Fig 1: Inspecting Intake Air Control Valve Assembly
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

INSPECT VACUUM SWITCHING VALVE FOR IAC VALVE ASSEMBLY NO.3

Check the VSV resistance.

Resistance

VACUUM SWITCHING VALVE FOR IAC VALVE ASSEMBLY NO. 3

Tester Connection	Specified Condition
1 - 2	37 to 44 Ω at 20°C (68°F)
1 - Body ground 2 - Body ground	10 kΩ or higher

Fig 2: Measuring Resistance Between Vacuum Switching Valve Terminals

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

If the result is not as specified, replace the VSV assembly No. 3.

Check VSV operation.
1. Check that air flows from port E to the filter.
  
  Fig 3: Checking Air Flows From Port E To Filter
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Apply battery voltage across the terminals. Check that air flows from port E to port F. If the result is not as specified, replace the VSV assembly No. 3.
  
  Fig 4: Checking Air Flows From Port E To Port F
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

INSPECT AIR CLEANER CAP SUB-ASSEMBLY
1. Cover port C with your finger, and check that air flows from port B to port A.
2. Cover port C with your finger, and check that air does not flow from port A to port B.
3. Cover ports A and C with your fingers, and apply 60 kPa (450 mmHg, 18 in.Hg) of vacuum to port B for 1 minute. Check that there is no change in the vacuum after 1 minute.
  If the result is not as specified, replace the air cleaner cap.
  
  Fig 5: Identifying Air Cleaner Cap Ports
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

INSPECT VACUUM SWITCHING VALVE FOR IAC VALVE ASSEMBLY NO. 2

Check the VSV resistance.

Resistance

VACUUM SWITCHING VALVE FOR IAC VALVE ASSEMBLY NO. 2

Tester Connection	Specified Condition
1 - 2	33 to 39 Ω at 20°C (68°F)
1 - Body ground 2 - Body ground	10 kΩ or higher

Fig 6: Measuring Resistance Between Vacuum Switching Valve Terminals

If the result is not as specified, replace the VSV assembly.

Check VSV operation.
1. Check that air flows from port E to the filter.
  
  Fig 7: Checking Air Flows From Port E To Filter
  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 result is not as specified, replace the VSV assembly.
  
  Fig 8: Checking Air Flows From Port E To Port F
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002