Quote:
Originally Posted by hancock1701
Could you please show me how to test the heating circuit? Do I remove the sensor and test the wiring on the sensor?
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The heater circuit is tested with a digital multimeter with the sensor still installed. You are looking for the presence of resistance between pins 1 & 2 on the connector, and should see between 1.8 and 2.5 ohm. If the unit is in range, turn the ignition to on, and check the same circuit for voltage, you should see 12V.