Toyota Celica 2005 Repair Manual page 488

3 Check circuit opening relay (Marking: C/OPN) (See page SF−57).
OK
4 Check voltage between terminal FC of ECM and body ground .
ON
A09084
NG
5 Check for open and short in harness and connector between circuit opening
relay (Marking: C/OPN) and ECM, circuit opening relay (Marking: C/OPN) and
ignition switch (See page IN−30).
OK
Replace ECM (See page SF−78).
2005 CELICA (RM1131U)
DIAGNOSTICS
NG
PREPARATION:
(a) Remove the ECM cover.
FC (+) (b) Turn the ignition switch ON.
CHECK:
Measure voltage between terminal FC of the ECM and body
ground.
OK:
Voltage 9 to 14 V
A09092
OK
NG
− ENGINE (1ZZ−FE)
Replace circuit opening relay.
Replace ECM (See page SF−78).
Repair or replace harness or connector.
487
DI−289