Volvo RWD 200 Forum

INDEX FOR 10/2025(CURRENT) INDEX FOR 9/2004 200 INDEX

[<<]  [>>]


 VIEW    REPLY TO THIS MESSAGE    PRINT   SAVE 

91+ AC wiring question for older 240 retrofit 200 1980

posted by  drj434343 on  Sun Mar 4 23:57 CST 2012
Author: [PROFILE] [EVERY POST] [THREADS] [BEST POSTS] RSS Feed     [IGNORE ALL POSTS]
last visit: Thu Oct 24 09:46 CST 2013
[RELATED]

I am trying to transplant a 93' 240 AC system into my 80' 242, and have discovered there was a 12V connection from the AC switch to the ECU then directly to the compressor. See the red highlighted lines in the middle of the diagram below and the circled connection to the ECU.



Now, the way I read this, that connection has the ability to turn the compressor on without any input from the pressure switches in the system. This seems dangerous.

The other issue is that I don't have an ECU in my K-jet system to connect this to anyway. It looks like I can simply delete this portion and the system will still work through the pressure switch portion of the circuit.

Does anyone know what the ECU portion of the circuit does and why it seems to bypass the pressure switch activation of the compressor? Can I omit it?






THREADED THREADED EXPANDED FLAT PRINT ALL
MESSAGES IN THIS THREAD

New 91+ AC wiring question for older 240 retrofit [200][1980]
posted by  drj434343 subscriber  on Sun Mar 4 23:57 CST 2012 >


<< < > >>



©Jarrod Stenberg 1997-2022. All material except where indicated.


All participants agree to these terms.

Brickboard.com is not affiliated with nor sponsored by AB Volvo, Volvo Car Corporation, Volvo Cars of North America, Inc. or Ford Motor Company. Brickboard.com is a Volvo owner/enthusiast site, similar to a club, and does not intend to pose as an official Volvo site. The official Volvo site can be found here.