cowboyrx Posted February 26, 2009 Share Posted February 26, 2009 '99 Accord Coupe 4-cyl Auto without climate control -------------------------------------------------- With the blower turned on at any speed, pressing the A/C switch does not turn on the light in the switch, compressor clutch or the radiator fans. Blower works fine at any speed. Systems has freon in it. Fuses are not blown. Turning the front window defrost switch turns the compressor on, both radiator fans, and the A/C switch has the small green LED lit as it should. (I can turn the compressor on/off with the A/C switch in this mode) The A/C pressure switch on the high side tests okay. Service manual flowchart asks to test the A/C thermostat, which I can't find on the car. It's supposed to have a 5 pin connector with 3 wires and supposed to be located on the evaporator box. All I see is a 2 wire connector going into the evaporator and their colors don't match the wiring schematic. Is this the thermostat? Strangely enough, the front window defrost switch's orange light is now always on even when ignition key is turned off and key is out. Has anyone seen this before? Is this an ECM problem? Link to comment Share on other sites More sharing options...
Turtlehead Posted February 27, 2009 Share Posted February 27, 2009 Honestly I would start by looking at the ETM and see how the deforst switch and the A/C switch are connected electrically. Is there a common ground they they run through in tandem, etc. It sounds more like an electrical issue based on what you have said. You can always pop the A/C switch first and use a test light to see if that has power with the key in the on position. If there is power then obviously the issue is after the switch. My only question is where were you looking for the 5P connector on the evap? I do not have the ETM with me right now, but if you have the ETM it should show a good picture of where it is located. It sounds like you have experience working on cars so you should be able to resolve the issue. If you have the service manual all ready and you are planning on keeping the car I would get the ETM for the car. The ETM in my opinion is the most valuable manual for any car. Basic mechanics lots of people can figure out, but with the ETM you will have all your bases covered. Best of luck. Link to comment Share on other sites More sharing options...
Recommended Posts
Archived
This topic is now archived and is closed to further replies.