Toyota Celica 2005, Repair Manual

Page: 721 / 2497

A19641
ON OFF
TBP
Air
E
Air
E
F F
DI − 522
− DIAGNOSTICS ENGINE (2ZZ − GE)
2005 CELICA (RM1131U)
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).
NG Repair or replace harness or connector.
OK
Replace ECM (See page SF − 78).
20 Check pressure switching valve.
PREPARATION:
(a) Remove the ECM cover.
(b) Turn the ignition switch ON.
CHECK:
Check the pressure switching valve function.
(1) Connect the terminal TBP of the ECM connector
and body ground (ON).
(2) Disconnect the terminal TBP of the ECM connector
and body ground (OFF).
OK:
(1) Pressure switching vavle is ON:
Air from port E flows out through port F.
(2) Pressure switching valve is OFF:
Air does not from flow port E to port F.
OK Go to step 23.
NG
21 Check operation of pressure switching valve (See page SF − 65).
NG Replace pressure switching valve.
OK
720