Inspection

3MZ-FE INTAKE AIR CONTROL SYSTEM:

INSPECTION

1. INSPECT INTAKE AIR CONTROL VALVE ASSEMBLY NO.3





(a) 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.
(b) 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 assembly No. 3.
2. INSPECT VACUUM SWITCHING VALVE FOR IAC VALVE ASSEMBLY NO.3





(a) Check the VSV resistance.
Resistance:





If the result is not as specified, replace the VSV assembly No. 3.
(b) Check VSV operation.





(1) Check that air flows from port E to the filter.





(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.
3. INSPECT AIR CLEANER CAP SUB-ASSEMBLY





(a) Cover port C with your finger, and check that air flows from port B to port A.
(b) Cover port C with your finger, and check that air does not flow from port A to port B.
(c) 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.
4. INSPECT VACUUM SWITCHING VALVE FOR IAC VALVE ASSEMBLY NO.2





(a) Check the VSV resistance.
Resistance:





If the result is not as specified, replace the VSV assembly.
(b) Check VSV operation.





(1) Check that air flows from port E to the filter.





(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.