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Home >> Jaguar >> 1982 >> XJ6 Base >> Repair and Diagnosis >> Engine Performance >> Fuel Delivery >> Fuel Injection - LUCAS-BOSCH AFC System >> Testing >> Coolant Temperature Sensor

Coolant Temperature Sensor

  1. Disconnect battery ground cable and electrical connector from sensor. Connect an ohmmeter between sensor terminals. Reading should be as shown in Temperature/Resistance Relationship chart.
  2. Disconnect ohmmeter and check resistance between each terminal and sensor body. A very high resistance denoting an open circuit should be obtained. If sensor does not respond as outlined, replace coolant temperature sensor.
    TEMPERATURE/RESISTANCE RELATIONSHIP

    Temperature (Coolant) Resistance (Ohms)
    14°F (0°C) 9200
    32°F (0°C) 5900
    68°F (20°C) 2500
    104°F (40°C) 1180
    140°F (60°C) 600
    176°F (80°C) 325
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