Toyota Celica 2005 Repair Manual page 587

DI−388
4 Check for short in harness and ECM.
Engine Coolant
Temp. Sensor
NG
5 Check for short in harness or ECM.
Engine Coolant
Temp. Sensor
E10 Connector
A19551
NG
Replace ECM (See page SF−78).
2005 CELICA (RM1131U)
DIAGNOSTICS
PREPARATION:
(a) Disconnect the engine coolant temperature sensor con-
ECM
nector.
(b) Turn the ignition switch ON.
THW
(c) When using hand−held tester, enter the following menu:
DIAGNOSIS / ENHANCED OBD II / DATA LIST / ALL
E2
DADA / COOLANT TEMP.
CHECK:
Read the temperature value on the OBD II scan tool or hand−
A19550
held tester.
OK:
Temperature value: −40°C (−40°F)
OK
PREPARATION:
(a) Remove the ECM cover.
ECM
(b) Disconnect the E10 connector from the ECM.
HINT:
THW
The engine coolant temperature sensor connector is discon-
nected.
E2
(c) Turn the ignition switch ON.
(d) When using hand−held tester, enter the following menu:
DIAGNOSIS / ENHANCED OBD II / DATA LIST / ALL
DADA / COOLANT TEMP.
CHECK:
Read the temperature value on the OBD II scan tool or hand−
held tester.
OK:
A19635
Temperature value: −40°C (−40°F)
OK
586
− ENGINE (2ZZ−GE)
Replace engine coolant temperature sensor.
Repair or replace harness or connector.