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Home >> Jaguar >> 1978 >> XJ-S >> Repair and Diagnosis >> Engine Performance >> Fuel Delivery >> Fuel Injection - LUCAS Electronic Fuel Injection >> Testing >> Air Temperature Sensor

Air Temperature Sensor

Disconnect battery and pull electrical connector off sensor. Connect ohmmeter between sensor terminals and note resistance reading. Compare reading with AIR TEMPERATURE SENSOR SPECIFICATIONS table to determine whether or not sensor is functioning properly. If reading is outside range, replace sensor.

AIR TEMPERATURE SENSOR SPECIFICATIONS

Temperature °F (°C) Resistance (Ohms)
26 (-10) 960
32 (0) 640
50 (10) 435
68 (20) 300
86 (30) 210
104 (40) 150
122 (50) 108
140 (60) 80