300D (123.133) L5-3.0L DSL Turbo (617.952) (1984)
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Heater Core Temperature Sensor / Switch: Testing and Inspection
Heat Exchanger Temperature Sensor
1. Remove heater core temperature sensor. Allow sensor to stabilize to ambient (room) temperature.
2. Connect ohmmeter across sensor pins and compare to specifications below.
Ambient (Room) Temperature
+15°C (+59°F) ............................................................................................................................................................................................ 15.7 ± 0.5 kohms
+25°C (+77°F) ............................................................................................................................................................................................ 10.0 ± 0.5 kohms
+35°C (+95°F) .............................................................................................................................................................................................. 6.5 ± 0.5 kohms
+80°C (+176°F) ............................................................................................................................................................................................ 1.5 ± 0.5 kohms
