I have an 00si with an 0bd2-0bd1 jumper harness; I have no a/c signal with the obd1 jumper/ecu's I have tried 3 ecus without any success at getting an a/c signal; thus it is not the ecu's.

When I plug in the 0bd2 ecu I get the a/c function and clutch engages. Has anyone had it before; how can I tell if my jumper harness is 0bd2a vs. 0bd2b? Also would this effect the A/C function? I have looked at the stock wiring diagrams and understand how the ecu actuates the a/c function. I have also searched this via ecu pinouts and understand that the obd1 ecu's use A15 for the A/C clutch relay and I believe it is B05 that actuates it on the obd2 ecu's. If I am wrong please correct me I plan to splice these two if I find that my jumper harness lacks this connection.

Thanks in advance for advice if people answer!

Dave

 

i've had a similar problem. my ac fan would turn on with the ac but the compressor wouldn't. so i just jumpered the wire from my fan to the ac compressor and it works just fine. compressor still turns on and off with temps like it's supposed to

 

i would like for you to explain how you do this. im having the same problem. thanks.