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Home >> Plymouth >> 1980 >> Sapporo Automatic Trans >> Repair and Diagnosis >> Engine Performance >> Engine Control Systems >> Electronic Spark Control System >> Testing >> Coolant Sensor/Switch Test

Coolant Sensor/Switch Test

  1. Disconnect coolant sensor/switch connector. Connect one lead of ohmmeter to sensor/switch terminal and other lead to ground.
  2. With engine temperature below sensor/switch operating temperature, resistance should be less than 10 ohms. With engine temperature above sensor/switch operating temperature, resistance should be infinite.
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