blower auto control
Thread Starter
3rd Gear
Joined: Jun 2009
Posts: 3
Likes: 0
From: Zionsville IN
blower auto control
My 88's blower went from randomly turning on to not working at all. All of the old threads I've found refer to the control module failing and the blower staying on. My clutch is enganging when turning on the air so relay should be OK? The motor is showing OK. What else am I missing that could be causing a problem. Is there a way to check the module with a meter?
Le Mans Master
Joined: Jul 2007
Posts: 5,043
Likes: 8
From: Tampa Florida
Your fan motor might just be shot. Divide and conquer: Pull the fan motor and apply 12v battery voltage to the motor's leads and see if she'll spin. If the fan works look for trouble some place else.
Last edited by engle1147; Jun 20, 2009 at 02:48 PM.
Le Mans Master
Joined: Dec 2000
Posts: 7,839
Likes: 22
From: San Diego, Ca
As above, jumper the blower motor - if it works, make sure the connector is intact.
Module provides a switched ground for the compressor - there's no relay - that part is working.
Controls send a low voltage signal to the Module - Tan or Brown wire. It's 2.5 volts at 1; 6 volts at 10. Output is 4/12. If there's no input, it's the Control Panel or the wire. If there's no output, it's the Module.
Module provides a switched ground for the compressor - there's no relay - that part is working.
Controls send a low voltage signal to the Module - Tan or Brown wire. It's 2.5 volts at 1; 6 volts at 10. Output is 4/12. If there's no input, it's the Control Panel or the wire. If there's no output, it's the Module.
