AC heater control Module
#1
AC heater control Module
I know these things are known to go out. I purchased a 2004 Pacifica 2 months ago. The module wasn't working then. I've tried 5 different control modules with no luck. Can they really be that crappy to have that many failed units or is there some other place I should be looking. Module has no action. LCD not working. No Controls working on any of the units I've tried. I purchase the first unit from salvage yard. They gave me 2 others to try. I then went to my cousin who works parts at a Nissan dealer here in Las Vegas. He ordered me a unit from a parts distributor of theirs. I have no way to know if the units worked in other vehicles. I have checked the wires coming from the dash for power. I get 12.4 V on the red and black wires. I've looked over all the fuses under the hood. Looking for an answer. Can Chrysler dealer bench test these things?
#4
Then I would start checking out the BCM. if you are getting NO functions at all for fan ,vent position.
A scanner that can read OBD11 AND ABS/ body codes would be VERY helpful at this point.
A scanner that can read OBD11 AND ABS/ body codes would be VERY helpful at this point.
Last edited by REBEL59; 10-02-2017 at 06:52 PM.
#5
I had the codes read today. Nothing regarding the BCM. I've been playing with the car trying to get rid of the ABS / TCS lights on dash as well. I was looking at the fuses under the hood. ABS fuses are good so I decided to check for voltage at the fuses. Seams that fuses 44 (Rear Heated Seats) and 45 (ABS IGN RUN have no power to the fuse at all. SO I jumped power from a spare space to 45 and low and behold the ABS lights went out and the AC heat control module powered up. Any idea why I wouldn't have power to these two fuses? All AC controls seam to work other then the fan never shuts off. I can turn off the power the fan still blowing.
#6
I had the codes read today. Nothing regarding the BCM. I've been playing with the car trying to get rid of the ABS / TCS lights on dash as well. I was looking at the fuses under the hood. ABS fuses are good so I decided to check for voltage at the fuses. Seams that fuses 44 (Rear Heated Seats) and 45 (ABS IGN RUN have no power to the fuse at all. SO I jumped power from a spare space to 45 and low and behold the ABS lights went out and the AC heat control module powered up. Any idea why I wouldn't have power to these two fuses? All AC controls seam to work other then the fan never shuts off. I can turn off the power the fan still blowing.
Think I just figured all my problems out. I'm missing the Run Relay #18. Going to get one of those and should be golden. Fingers crossed.
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