Component Inspection
Check PCSV
1.

IG KEY : OFF , Engine : OFF

2.

Disconnect the hose leading from the PCSV to the intake manifold at PCSV.

3.

Apply a vacuum at the nipple and verify that the PCSV holds vacuum.

4.

IG KEY: ON and ground terminal 1 of the PCSV connector (should hear a faint click from PCSV).

5.

Vacuum should be released.

6.

Repeat this procedure 4 or 5 times to ensure PCSV reliability.

7.

Is PCSV working properly?

YES

a.

PCSV is OK.

b.

Possibility of defective ECM. Temporarily test with a new ECM and check for proper operation.

If problem is corrected, replace ECM and go to "Verification of Vehicle Repair" procedure.

NO

a.

Test with a new PCSV and check for proper operation.If problem is corrected, replace it.

And go to "Verification of Vehicle Repair" procedure.

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