Engine Coolant Temperature (Ect) Sensor Inspection - Lexus 2005 IS300 User Manual

SST
Ohmmeter
30
20
10
5
3
2
1
0.5
0.3
0.2
0.1
-20 0 20
(-4) (32) (68)
S01196 Temperature °C (°F)
S01699
2005 LEXUS IS300 (RM1140U)
INSPECTION
1.
2.
(a)
(b)
B01944
3.
Using an ohmmeter, measure the resistance between the ter-
minals.
If the resistance is not as specified, replace the ECT sensor.
4.
(a)
(b)
Acceptable
(c)
5.
40 60 80 100
(104) (140) (176) (212)
Z17274
SFI - ENGINE COOLANT TEMPERATURE (ECT) SENSOR
DRAIN ENGINE COOLANT
REMOVE ECT SENSOR
Disconnect the ECT sensor connector.
Using SST, remove the ECT sensor and gasket.
SST 09205-76030
INSPECT ECT SENSOR
Resistance: Refer to the graph
REINSTALL ECT SENSOR
Install a new gasket to the ECT sensor.
Using SST, install the ECT sensor.
SST 09205-76030
Torque: 19.6 N·m (200 kgf·cm, 14 ft·lbf)
Connect the ECT sensor connector.
REFILL WITH ENGINE COOLANT
Author :
SF-65
SF0O6-06
Date :
1446