Install vacuum gauge to PCSV after disconnecting PCSV vacuum hose.
Inspect vacuum leakage by using vacuum gauge.
■ Specification : Vacuum state maintains at operating vacuum gauge.
Does vacuum gauge maintain vacuum value?
![]() | ▶ Go to "PCSV actuation test" as below. |
![]() | ▶ Replace the PCSV. |
Perform "canister purge valve" actuation test after engine warming up.
■ Specification : Vacuum state released by actuation test.
Is vacuum state released by actuation test?
![]() | There are possible causes as below. ▶ Click on "Fuel supply state" item for more details. ▶ Click on "Fuel pump relay circuit" item for more details. |
![]() | ▶ Check fuel leakage on the PCSV. ▶ Check that PCSV is opened always. ▶ Replace the PCSV. |