Toyota Camry Manual page 1262

3 Check for open in harness or ECM.
ON
Engine Coolant Temp. Sensor
2
1
THW E2
NG
Confirm good connection at ECM.
If OK, check and replace ECM.
4 Check for short in harness and ECM.
ON
Engine Coolant
Temp. Sensor
NG
DIAGNOSTICS
PREPARATION:
ECM
(a)
(b)
5 V
14
THW
E10
HINT:
18
E2
E10 Engine coolant temp. sensor connector is disconnected. Be-
fore checking, do a visual and contact pressure check for the
ECM connector (See page IN–31).
(c)
CHECK:
Read temperature. value on the OBD II scan tool or TOYOTA
hand–held tester.
OK:
A02020
OK
PREPARATION:
(a)
(b)
ECM
CHECK:
5 V
14
Read temperature value on the OBD II scan tool or TOYOTA
E10
THW
hand–held tester.
18
E10
E2
OK:
A00216
OK
– ENGINE (1MZ–FE)
Remove the glove compartment (See page SF–73).
Connect between terminals THW and E2 of the ECM con-
nector.
Turn the ignition switch ON.
Temperature value: 140 C (284 F) or more
Open in harness between terminal E2 or THW,
repair or replace harness.
Disconnect the engine coolant temp. sensor connector.
Turn the ignition switch ON.
Temperature value: –40 C (–40 F)
Replace engine coolant temp. sensor.
Author :
DI–235
Date :
470