If you’re looking for the AC wiring diagram for your 1996 Honda Civic, you’ve come to the right place. This article will cover everything you need to know about the wiring diagram for your Civic’s AC system, including wiring diagrams, FAQ, and more.
Table of Contents
Wiring Diagram
For your convenience, we have included a Honda Civic AC wiring diagram below.
| Wire Color | Function | Location |
|---|---|---|
| White | Main relay output | Under dash fuse box |
| Blue | Power to compressor clutch | Under hood fuse box |
| Green/Red | Temperature sensor | In climate control panel |
| Green/Yellow | Evaporator temperature sensor | In evaporator housing |
Note that this wiring diagram is for a 1996 Honda Civic with a 1.6L engine. If you have a different engine or a different year model, the wiring diagram may not be 100% accurate for your vehicle. However, this diagram should give you a good starting point and help you identify the various wires and their functions in your AC system.
For more detailed information on how to read wiring diagrams, check out this guide from AutoZone.
Civic AC Wiring Diagram FAQ
1. What is the function of the white wire in the Civic AC system?
The white wire carries the main relay output signal. This signal goes to the PCM (powertrain control module) and tells the AC system to turn on or off based on the PCM’s instructions.
2. What does the blue wire do in the Civic AC system?
The blue wire carries power to the compressor clutch. When the AC system is turned on, the PCM sends a signal to the main relay which then sends power to the compressor clutch via the blue wire. This engagement of the compressor clutch allows the system to start building pressure and producing cold air.
3. How does the temperature sensor work in the Civic AC system?
The temperature sensor in the Civic AC system is responsible for monitoring the temperature of the evaporator. If the evaporator gets too cold, it can freeze and cause damage to the AC system. The temperature sensor sends a signal to the PCM when the temperature drops below a certain threshold. The PCM then adjusts the compressor clutch engagement to prevent the evaporator from freezing.
4. Where is the evaporator temperature sensor located?
The evaporator temperature sensor is located in the evaporator housing. It is usually mounted on or near the evaporator inlet or outlet pipe.
Tips for Troubleshooting Your AC
If you’re having problems with your Civic’s AC system, there are a few things you can check before taking it to a mechanic. Here are some tips for troubleshooting your AC:
Check the fuses
If your AC system is not working at all, the first thing you should check is the AC fuse. The AC fuse is usually located in the under-hood fuse box or the under-dash fuse box. Check your owner’s manual to find out where the fuse is located for your specific vehicle. If the fuse is blown, replace it with a new one and see if the AC system starts working again.
Check the refrigerant level
If your AC system is blowing warm air or not blowing at all, it could be due to low refrigerant. You can check the refrigerant level using a pressure gauge or have it checked by a professional. If the refrigerant level is low, you may have a leak in the system that needs to be repaired.
Check the compressor clutch
If your AC system is not engaging at all, the problem could be a faulty compressor clutch. You can test the clutch by checking for voltage at the blue wire with the AC system turned on. If there is voltage but the clutch is not engaging, it may need to be replaced.
Check the temperature sensor
If your AC system is blowing cold air but then suddenly stops, it could be due to a faulty temperature sensor. You can test the sensor using a multimeter or have it checked by a professional. If the sensor is faulty, it will need to be replaced.
Check the AC control panel
If your AC system is not responding to input from the AC control panel, the problem could be a faulty control panel. You can test the panel using a multimeter or have it checked by a professional. If the panel is faulty, it will need to be replaced.
By following these tips, you can save yourself time and money by identifying and fixing simple problems with your Civic’s AC system. However, if you’re not comfortable performing these checks yourself, don’t hesitate to take your vehicle to a professional mechanic for help.
