Toyota Celica 2005 Repair Manual page 1268

INSPECTION PROCEDURE
1 Check voltage between terminal IDL of cruise control ECU connector and body
ground.
ON
(−) (+)
AB0119
I00167
NG
2 Check for open and short in harness and connector between cruise control ECU
and ECM (See page IN−30).
OK
Check and replace cruise control ECU (See
page IN−30).
2005 CELICA (RM1131U)
DIAGNOSTICS
PREPARATION:
(a)
(b)
(c)
CHECK:
IDL
Measure the voltage between terminal IDL of the ECU connec-
tor and body ground when the throttle valve is fully opened and
fully closed.
OK:
I00172
− CRUISE CONTROL SYSTEM (1ZZ−FE)
Remove ECU with connector being connected.
Disconnect the cruise control ECU connector.
Turn ignition switch ON.
Throttle valve position
Fully opened
Fully closed
OK Proceed to next circuit inspection shown in
problem symptom table (See page DI−1048).
NG Repair or replace harness or connector.
1267
DI−1067
Voltage
10 − 14 V
Below 2 V