Concorde V6-2.7L VIN R (1998)
Coolant Temperature Sensor/Switch (For Computer): Testing and Inspection
Sensor Test
Fig 48 Engine Coolant Temperature Sensor
1. With the key off, disconnect wire harness connector from coolant temperature sensor.
2. Connect a high input impedance (digital) volt-ohmmeter to terminals A and B. The ohmmeter should read as follows:
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Engine/Sensor at normal operating temperature around 200°F should read approximately 700 to 1,000 ohms.
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Engine/Sensor at room temperature around 70°F ohmmeter should read approximately 7,000 to 13,000 ohms.
3. Test the resistance of the wire harness between the PCM 40-way connector terminal 26 and the sensor harness connector. Refer to Electrical
diagrams for circuit information. If the resistance is greater than 1 ohm, repair the wire harness as necessary
