Summit Wagon AWD L4-2350cc 2.4L SOHC (1995)
Coolant Temperature Sensor/Switch (For Computer): Testing and Inspection
TROUBLESHOOTING HINTS
Suspect the coolant temperature sensor or sensor circuit if fast idle speed is inadequate or the engine emits dark smoke during engine warm up.
SENSOR INSPECTION
CAUTION: Be careful not to touch the tool against the resin section of the connector when removing and installing.
1. Remove engine coolant temperature sensor from the intake manifold.
Engine Coolant Temperature Sensor
2. With temperature sensing portion of engine coolant temperature sensor immersed in hot water check resistance
Temperature °C (°F)
Resistance in k ohms
0 (32)
5.8
20 (68)
2.4
40 (104)
1.1
80 (176)
0.3
3. If the resistance deviates from the standard value greatly replace the sensor.
INSTALLATION
1. Apply sealant to threaded portion.
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Specified sealant: 3M NUT locking Part No. 4171 or equivalent
2. Install engine coolant temperature sensor and tighten it to specified torque.
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Sensor tightening torque: 30 Nm (22 ft lb)
3. Fasten harness connectors securely.
HARNESS INSPECTION