ENGINE COOLANT TEMPERATURE SENSOR
E2-14prose procedureUnverifiedCoolant fan relay comes in two terminal layouts: [TYPE 1] and [TYPE 2].
Removal
- 1Disconnect the engine coolant temperature sensor connector.
- 2Remove the engine coolant temperature sensor.
Inspection
- 1Place the sensor in water with a thermometer and heat the water gradually.
- 2Measure resistance of the sensor with an ohmmeter.
- 3If not as specified, replace the engine coolant temperature sensor.
ECT sensor resistance
91°C {[?]96°F}
Resistance kΩ1.70-1.84
97°C {207°F}
Resistance kΩ1.42-1.53
108°C {226°F}
Resistance kΩ1.03-1.11
Installation
- 1Install the engine coolant temperature sensor and a new washer.Tightening torque: 16-23 N·m {1.6-2.4 kgf·m, 12-17 ft-lbf}
- 2Connect the engine coolant temperature sensor connector.
COOLANT FAN RELAY
Removal
- 1Disconnect the negative battery cable.
- 2Remove the coolant fan relay.
Inspection
- 1Check continuity of the coolant fan relay as shown.
![Coolant fan relay continuity diagram. Top circle shows the internal schematic with terminals A, B (top) and C, D (bottom) and the coil/contact arrangement. Below are two relay terminal layouts labeled [TYPE 1] and [TYPE 2] showing terminals A, B, C, D.](/images/page-0168_fig4.png)
- 2Apply battery positive voltage between terminals B and D. Check for continuity between terminals A and C.
- 3If not as specified, replace the coolant fan relay.
Coolant fan relay continuity
A-C
ContinuityNo
B-D
ContinuityYes