HVAC electrical diagram
Thread Starter
Team Owner
Joined: Jan 2007
Posts: 31,233
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From: Utah
HVAC electrical diagram
I fried my HVAC and was wondering if anyone actually has a wiring diagram for the HVAC. I've checked a decent amount of posts and there are people saying they have it so if someone does can you help me out? PLEASE!!!!
Thanks,
Franklin
Thanks,
Franklin
Thread Starter
Team Owner
Joined: Jan 2007
Posts: 31,233
Likes: 201
From: Utah
Anyone know what this is that is circled. It's off the circuit board that plugs into the wiring harness of the car. I think I might have fried it. Thinking maybe a voltage regulator.
Last edited by sublime1996525; Sep 14, 2008 at 07:57 PM.
Tech Contributor
Joined: Apr 2007
Posts: 10,924
Likes: 78
From: Forney Texas
If it is, ST microelectronics makes one. The part # for the 7994 is LD1085c. You can buy one from Digikey for 2.73. It is on catalog page# 1010. You might want to make sure that circuit board trace is intact before you start chasing a replacement part. That trace looks bad and could be open under the white plastic plug. If you have to repair it, you can just solder a wire from each end and do it on the back side of the circuit board and drill through to cross sides of the board if necessary. Put the board in front of a light to make sure it's not a multi-layered board before you drill.
Last edited by BLOWNBLUEZ06; Sep 14, 2008 at 10:35 PM.
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Thread Starter
Team Owner
Joined: Jan 2007
Posts: 31,233
Likes: 201
From: Utah
Right now I'm not experiencing any problems, but I did have a short which is what blackened the trace. I just noticed that the trace goes thru the part so I was wondering what it was before I hook it up and start the car for fear that something might go bad.
Thread Starter
Team Owner
Joined: Jan 2007
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From: Utah
Ok I am having an issue. The led lights stay lit the entire time. I turned the car off, went back 30 minutes later and the lights are still lit. I think I have an idea what that component does. Anyone else have any suggestions?
Le Mans Master
Joined: May 2006
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From: DuBois PA
St. Jude Donor '11-'12-'13-'14-'15
That happened to a unit I was installing LEDs in for a friend, one of the LEDs got shorted (happened during shipping) and caused some smoke and exactly what you are experiencing.... A new power board fixed it, but we already know the culprit is on it. Can you trace back from the lighting pins coming from the display board? Third and Sixth ones in from the Black wire I believe...
Tim
Tim
Tech Contributor
Joined: Apr 2007
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From: Forney Texas
Ok, With those schematics I sent you, unplug the controller and meter the 2 main grounds. If you're missing a ground, it could be sourcing the ground through another path which could possibly cause your problem. One is black and the other is grey and black.
Thread Starter
Team Owner
Joined: Jan 2007
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From: Utah
Ok I'll try that. Thanks.
Instructor
Joined: Apr 2002
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I have posted this on a new thread but what I am trying to find fits perfect for this thread. I did the resolder fix to bring back my display but found only the display and led's are working all the lamps are dead. I found this blown and missing a big chunk of it and trying to find the part # for it:
If someone knows the part # or has a wiring diagram I would be very thankful my email is mvette67@hotmail.com.
Thank you,
Mike
If someone knows the part # or has a wiring diagram I would be very thankful my email is mvette67@hotmail.com.
Thank you,
Mike
