Toyota Tundra 2005 Service - Repair - Maintenance page 1933

Ohmmeter
30
20
10
5
Acceptable
3
2
1
0.5
0.3
0.2
0.1
−20 0 20 40 60 80 100
(−4) (32) (68) (104) (140) (176)
TEMPERATURE _C (_F)
SFI (1GR−FE) − ENGINE COOLANT TEMPERATURE (ECT) SENSOR
ENGINE COOLANT
TEMPERATURE (ECT) SENSOR
INSPECTION
1. DRAIN ENGINE COOLANT
2. REMOVE V−BANK COVER
3. REMOVE ENGINE COOLANT TEMPERATURE SEN-
SOR
(a) Disconnect the engine coolant temperature sensor con-
nector.
(b) Remove the engine coolant temperature sensor and gas-
ket from the water by−pass joint.
4. INSPECT ENGINE COOLANT TEMPERATURE SEN-
SOR RESISTANCE
Using an ohmmeter, measure the resistance between termi-
nals.
Resistance:
2.32 to 2.59 kΩ at 20 _C (68 _F)
0.310 to 0.326 kΩ at 80 _C (176 _F)
NOTICE:
When inspecting the water temperature sensor in water,
prevent water flow into the terminals. After inspection,
wipe the water off from the sensor.
5. INSTALL ENGINE COOLANT TEMPERATURE SEN-
SOR
(a) Install a new gasket and engine coolant temperature sen-
sor to the water by−pass joint.
Torque: 20 N·m (204 kgf·cm, 15 ft·lbf)
(b) Connect the engine coolant temperature connector.
6. ADD ENGINE COOLANT
(212)
7. CHECK FOR COOLANT LEAKS
A23233
8. INSTALL V−BANK COVER
SF−59
SF1Z8−01