Component Inspection

INSPECTION

1. INSPECT INTAKE AIR CONTROL VALVE ASSEMBLY NO.1 (1MZ-FE ONLY)




a. With vacuum of 26.7 kPa (200 mm Hg, 7.9 in. Hg) applied to the actuator, check that the IAC valve closes.
b. 1 minute after applying the vacuum, check that the IAC valve remains closed.

If the result is not as specified, replace the IAC valve assembly No. 1.

NOTE: Do not adjust the screw.

2. INSPECT INTAKE AIR CONTROL VALVE ASSEMBLY NO.2




a. 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 the illustration.
b. One minute after applying the vacuum, check that the actuator rod does not return.

If the result is not as specified, replace the IAC valve assembly No. 2.

3. 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 one 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.

4. INSPECT VACUUM SWITCHING VALVE ASSEMBLY FOR ACIS




a. Cover port C with your finger, and check that air flows from port B to port A.
b. Cover ports C with your finger, and check that air does not flow from port A to port B.
c. Cover port A and C with your fingers, and apply 60 kPa (450 mmHg, 18 in.Hg) of vacuum to port B. Check that there is no change in the vacuum after one minute.

If the result is not as specified, replace air cleaner cap.

5. INSPECT VALVE ASSEMBLY, VACUUM SWITCHING FOR IAC VALVE NO.1 (1MZ-FE ONLY) AND NO.2

Standard:

a. Check the VSV 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.

6. INSPECT VACUUM SWITCHING VALVE ASSEMBLY FOR IAC VALVE ASSEMBLY NO. 3

Standard:

a. Check the VSV 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 F.

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