Toyota Celica 2005 Repair Manual page 547

DI−348
OBD II scan tool (excluding hand−held tester):
1 Check operation of OCV.
(+)
(−)
OK
2 Check for open and short in harness and connector between OCV and ECM (See
page IN−30).
OK
Check and replace ECM (See page SF−78).
2005 CELICA (RM1131U)
DIAGNOSTICS − ENGINE (2ZZ−GE)
PREPARATION:
(a) Start the engine and warm it up.
(b) Disconnect the OCV connector.
(c) Apply battery voltage between the terminals of the OCV.
CHECK:
Check the engine speed.
OK:
Rough idle or engine stalled
A19255
NG Replace OCV.
NG Repair or replace harness or connector.
546