Climate control
Thread Starter
Burning Brakes
Joined: Nov 2008
Posts: 995
Likes: 1
From: Naples Campania
Climate control
I've been gone for awhile because it's just a little too cold to work on the car right now. No, there is no snow here in Naples, Italy, but it's just the temp with high wind keeps me inside most of the time. If it is good weather, I'm on the roof with a cigar enjoying it rather than busting up my knuckles on 91'. Now that it's getting warmer, I'm hoping I could get some help with this.
I have done some searches, and I haven't found my symptoms. Generally, the problem with the climate control modules here are a blown fuze or a bad vacuum line, but this is really strange. I have power to it, I know this because the back light comes on and goes off when it's supposed to. However, the display shows nothing and none of the controls work. Without pulling apart the console, is it possible that one of the connectors in the back is disconnected? Is there a connection to the heater core that could be causing this?
No, I don't have my FSM anymore.
Thanks!
I have done some searches, and I haven't found my symptoms. Generally, the problem with the climate control modules here are a blown fuze or a bad vacuum line, but this is really strange. I have power to it, I know this because the back light comes on and goes off when it's supposed to. However, the display shows nothing and none of the controls work. Without pulling apart the console, is it possible that one of the connectors in the back is disconnected? Is there a connection to the heater core that could be causing this?
No, I don't have my FSM anymore.
Thanks!
7th Gear
Joined: Aug 2011
Posts: 7
Likes: 1
My 86 was doing the same thing. I pulled the unit out and took it apart. There is a circuit board plugged into the back of the face plate. The rectangular connector was not holding the board tight any more. I used a dental tool to reach in and raise each of the tiny connectors. Put it back together and it is working fine now.
Le Mans Master
Joined: Aug 2005
Posts: 7,392
Likes: 216
From: Merritt Island, FL
The backlight for the display is likely on a completely different circuit from the actual function circuits of the HVAC system.
I'd not suspect anything related to the heater core or blower box. I'd first check fuses, then on to checking wiring connections at the control panel and the programmer that is under the driver's side dash.
I'd not suspect anything related to the heater core or blower box. I'd first check fuses, then on to checking wiring connections at the control panel and the programmer that is under the driver's side dash.
Safety Car
Joined: Nov 2008
Posts: 4,328
Likes: 15
From: Jacksonville FL
The backlight for the display is likely on a completely different circuit from the actual function circuits of the HVAC system.
I'd not suspect anything related to the heater core or blower box. I'd first check fuses, then on to checking wiring connections at the control panel and the programmer that is under the driver's side dash.
I'd not suspect anything related to the heater core or blower box. I'd first check fuses, then on to checking wiring connections at the control panel and the programmer that is under the driver's side dash.
Race Director
Joined: Apr 2002
Posts: 10,036
Likes: 346
From: Anaheim CA
There is only one connector on the back of the unit. The main power to the unit comes from the GAGES fuse, and I assume the rest of the instrument panel is working because you didn't say otherwise. Given that, it appears that the problem is inside the control head.
