Dodge Repair: NO A/C ????, pressure transducer, dodge stratus


Question
Mr.Moseley, I have a 1996 dodge stratus w/ 2.0 5spd w/ A/C that will not operate, the A/C light on the hvac control module does not light and the comp is not getting power to it, I checked the pressure transducer pins for damage and checked all the fuses and grounds as per the service manual? need help...  Thank you sir  

Answer
The power for the clutch should come directly from fuse 19 (40amp) in the power distribution center (PDC) under the hood.  Power should always be there at the fuse.  The source for that fuse also feeds the ignition switch so if the power source PRIOR to the fuse is bad then your ignition switch wouldn't work properly.

The clutch grounds through the clutch and power to the clutch itself is fed from the a/c relay.  Now, if the computer doesn't tell the relay to work then the relay will not complete it's circuit and power will never be sent to the compressor.  

What you'll have to do is pull out the a/c clutch relay and verify that two circuits in there have power.  If you look at the relay you'll see markings showing pins 30 and 87.  If you jump the corresponding pins in the slot the relay came out of you should hear the a/c clutch engage and disengage.

Now... the second power I was talking about where you pulled out the relay comes from fuse 9 (10amp) in the PDC as well.  If you don't have two powers in there then you've got a bad fuse or an open wire.  If you've got two hot wires and the compressor clicks on and off then for some reason the computer is not commanding the compressor on.

This can be caused by a bad control head, a bad transducer or even a sensor that measures the temperature of the component inside the dash.  The transducer connector should have three wires.  One is a ground, one is a reference voltage (5 or 8) and the other is a signal.  You can verify the reference voltage and ground but the signal is going to real difficult to fake.

Let me know how much of that helped, what results you've found after checking those things above and we'll see if we can go to the next step.
Doug