Toyota RM787U, Service And Repair Manual

Page: 622 / 1976

DI-84
- DIAGNOSTICS ENGINE
238
Author: Date:
2001 SIENNA (RM787U)
OK:
VSV is ON:
Air does not flow from port E to port F.
VSV is OFF:
Air from port E flows out through port F.
OK Go to step 21.
NG
18 Check vacuum hose between VSV for CCV and charcoal canister.
CHECK:
(a)
Check that the vacuum hose is connected correctly.
(b) Check the vacuum hose for looseness and disconnection.
(c) Check the vacuum hose for cracks, hole damage and blockage.
NG Repair or replace.
OK
19 Check operation of VSV for CCV (See page SF-73 ).
OK Go to step 20.
NG
Replace VSV and charcoal canister, and then clean vacuum hose between charcoal canister and
VSV for CCV.
20 Check for open and short in harness and connector between EFI main relay
(Marking: EFI) and VSV for CCV, and VSV for CCV and ECM (See page
IN-31 ).
NG Repair or replace harness or connector.
OK