Dodge Repair Questions? Ask a Mechanic for Answers ASAP
Hi Im David, allow me a few moments to look up some info on your vehicle. thank you
check for power at the compressor. let me know the outcome. thanks
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check the ground wires for a voltage drop reading. A max voltage reading of 0.250 volt indicates a bad (shorted) wire connections. Do this with key on and reading must be done when engine is hot and cold. (Readings must be the same). The heater wires in order to work must have a power supply, which is normally 12 volts. . Always measure the voltage on that supply wire by using a voltmeter. However, to make sure it really works poke it with a test light and see if the test light will light up. Sometimes, it reads 12 volts on the tester but it is not strong enough to light a test light. This indicates a failing or corroded power supply wire.If the heater wires proves OK, then your next task is to measure the signal wire to the computer terminal. Again you can do this by going to the computer pin and checking if you are getting the correct reading. You should get between 0.1volt to 0.9 volt when the engine is warmed-up. The reading must be oscillating and NOT stuck on one end or at the middle. To test the validity of the reading, you can manually lean-out the reading by disconnecting a vacuum hose. You can also enrich it by introducing a carb cleaner spray to your throttle
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