Section 259 (Intake Air Control System): Inspection: 3MZ-FE

WARNING: This page is about a different car, the 2004 Toyota Camry Solara. However, it is still accessible from the selected car via links, so may be relevant.

INSPECT INTAKE AIR CONTROL VALVE ASSY NO. 2
1. Apply 26.7 kPa (200 mmHg, 7.9 in.Hg) of vacuum to the actuator. Check if the actuator rod pulls the lever and causes the valve to rotate open, as shown in Fig 1 .
  
  Fig 1: Checking Actuator Rod Pulls Lever & Causes Valve To Rotate Open
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Apply the vacuum for 1 minute. Check that the actuator rod does not return.
If the result is not as specified, replace the IAC valve assy No. 2.
INSPECT INTAKE AIR CONTROL VALVE ASSY 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 Fig 2 .
  
  Fig 2: Checking Valve Rotates Open
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
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 IAC valve assy No. 3.
INSPECT VACUUM SWITCHING VALVE ASSY FOR IAC VALVE ASSY NO. 3
1. Check the VSV resistance.
  Standard:
  
  Fig 3: Checking Valve Resistance
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  
  If the result is not as specified, replace the VSV assy No. 3.
  
  Fig 4: Valve Resistance Table
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Check VSV operation.
  1. Check that air flows from port E to the filter.
    
    Fig 5: 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 assy No. 3.
Fig 6: Checking Air Flows From Port E To Port F
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
INSPECT AIR CLEANER CAP SUB-ASSY
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 7: Inspecting Air Cleaner Cap Sub-Assy
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

INSPECT VACUUM SWITCHING VALVE ASSY FOR IAC VALVE ASSY NO. 2

Check the VSV resistance.

Fig 8: Checking VSV Resistance

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Standard:

RESISTANCE CHECK

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

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

Check VSV operation.
1. Check that air flows from port E to the filter.
  
  Fig 9: 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 assy.

Fig 10: Checking Air Flows From Port E To Port F