Toyota Camry Manual page 1261

DI–234
1 Connect OBD II scan tool or TOYOTA hand–held tester, and read value of engine
coolant temperature.
PREPARATION:
(a) Connect the OBD II scan tool or TOYOTA hand–held tester to the DLC3.
(b) Turn the ignition switch ON and push the OBD II scan tool or TOYOTA hand–held tester main switch
ON.
CHECK:
Read temperature value on the OBD II scan tool or TOYOTA hand–held tester.
OK:
Same as actual engine coolant temperature.
HINT:
D
If there is open circuit, OBD II scan tool or TOYOTA hand–held tester indicates –40°C (–40°F).
If there is open circuit, OBD II scan tool or TOYOTA hand−held tester indicates 140°C (284°F) or more.
D
OK
Check for intermittent problems
(See page DI–197).
2 Check for open in harness or ECM.
ON
Engine Coolant
Temp. Sensor
2
1
NG
DIAGNOSTICS
NG
PREPARATION:
(a) Disconnect the engine coolant temp. sensor connector.
(b) Connect the sensor wire harness terminals together.
ECM
(c) Turn the ignition switch ON.
5 V
CHECK:
14
E10
Read temp. value on the OBD II scan tool or TOYOTA
THW
18
hand–held tester.
E10
E2
OK:
Temperature value: 140 C (284 F) or more
A00214
OK
– ENGINE (1MZ–FE)
–40°C (–40°F) ... Go to step 2.
140°C (284°F) or more ... Go to step 4.
Confirm good connection at sensor.
If OK, replace engine coolant temp. sensor.
Author : Date :
469