My a/c compressor is not running. My car is a 92 Prelude Si automatic. I'm using a 92-96 pdf service manual and a digital multimeter to troubleshoot this a/c issue. I have just troubleshot down to the very bottom of thumbnail page 1,051, which is page 22-17.
The service manual tells me to "Measure voltage between the YELLOW/BLACK2> and BLACK/YELLOW2> wire terminal with the negative probe grounded to the body." I am not getting a battery voltage reading. The repair manual tells me to "Repair open in the YELLOW/BLACK2 <BLACK/YELLOW2> wire between the under-dash fuse/relay box and compressor clutch relay."
Will you guys help me through the troubleshooting process from this point? The wiring schematic is very confusing to me. Also, would it be easier to just replace the open Yellow/Black2 <Black/Yellow2> wire rather than tracing the onen wire through the wiring harness?
I'm sorry for writing so much. I'm just trying to explain this as well as possible so i'll get the best possible help and answers. Please feel free to pm me if you need to. Thank you for your time & help. God bless

 

What is the refrigerant charge at?

 

I Haven't had time to check it. Hopefully i'll get to check it this week. Life has me so busy right now. but let me know how yours was if you get measured befor i do Ok.

 

He is asking because the system has a pressure sensor, so if there is not enough of a charge it won't activate. You should be able to find the voltage that the ecu expects to see in the Helms, and test at the ecu wiring and verify if it is working or not.