Toyota Celica 2005 Repair Manual page 444

19 Check for open and short in harness and connector between EFI main relay
(Marking: EFI) and CCV, and CCV and ECM (See page IN−30).
OK
Replace ECM (See page SF−78).
20 Check pressure switching valve.
ON
Air
E
F
BE6653
VSV is ON
A09084
A10278
NG
21 Check operation of pressure switching valve (See page SF−65).
OK
2005 CELICA (RM1131U)
DIAGNOSTICS
TBP
Air
E
F
VSV is OFF
A09099
− ENGINE (1ZZ−FE)
NG Repair or replace harness or connector.
PREPARATION:
(a) Remove the ECM cover.
(b) Turn the ignition switch ON.
CHECK:
Check the VSV function.
(1) Connect between terminal TBP of the ECM connec-
tor and body ground (VSV ON).
(2) Disconnect between terminal TBP of the ECM con-
nector and body ground (VSV OFF).
OK:
(1) VSV is ON:
Air from port E flows out through port F.
(2) VSV is OFF:
Air does not flow from port E to port F.
OK Go to step 23.
NG Replace pressure switching valve.
443
DI−245