Toyota Celica 2005 Repair Manual page 1274

INSPECTION PROCEDURE
1 Check operation of overdrive.
PREPARATION:
Test drive after engine warms up.
CHECK:
Check that the overdrive ON ↔ OFF occurs by operating the O/D switch ON−OFF.
OK
2 Check voltage between terminal OD of harness side connector of cruise control
ECU and body ground.
ON
(−) (+)
AB0119
I00143
OK
2005 CELICA (RM1131U)
DIAGNOSTICS
O/D
I00174
− CRUISE CONTROL SYSTEM (1ZZ−FE)
NG Check and repair electronically controlled
transmission (See page DI−666 or DI−755).
PREPARATION:
(a) Remove ECU with connector being connected.
(b) Turn the ignition switch ON.
(c) Disconnect the ECU connector.
CHECK:
Measure the voltage between terminal OD of the harness side
connector of ECU and body ground.
OK:
Voltage: 10 − 14 V
NG Go to step 5.
1273
DI−1073