2009 Honda Civic A/C Relay Location

The A/C relay for the 2009 Honda Civic is located in the Underwood fuse box. The location of this box can be found near the battery on the passenger side of the engine bay. Once you have located and opened it, look for a black plastic cover that has several relays inside.

Find one labeled ‘A/C’ or ‘ACG’ and remove it from its socket. This is your A/C relay which controls power to your air conditioning system.

2009 Honda Civic AC Relay Location

Page Contents


Where is the Ac Relay Located?What are the Symptoms of a Bad Ac Relay in a Car?How Do You Test an Ac Relay on a Honda Civic?How Do I Know If My Relay Switch is Bad on My Ac Unit?Honda Civic 2003-2012 AC FUSE and Relay is causing AC shut down problem2009 Honda Civic Ac RelayMg Clutch Fuse Honda CivicConclusion

Where is the Ac Relay Located?

The AC relay is located in the main power box, usually close to where the battery is housed. It’s typically a small rectangular box with a black or grey lid and will have several terminals on top of it. Inside this box are two relays that control when your air conditioner compressor turns on and off.

The larger of these two relays controls the compressor, while the smaller one acts as an overload protection switch for your system.

To find out which one is your AC relay, check for its part number or label printed on its surface – this should be “AC Relay” followed by a number (such as “ACR-123”). It’s important to identify it correctly before attempting any repairs or maintenance work to ensure you don’t damage any other parts in the process!

What are the Symptoms of a Bad Ac Relay in a Car?

When it comes to diagnosing a bad AC relay in your car, the most common symptom is that the air conditioning system will not turn on at all. This can be due to any number of issues, including a blown fuse or a faulty relay. If you notice that your AC system is completely dead and won’t respond when you try to turn it on, then this could be an indication that there’s something wrong with the relay.

Other symptoms of a bad AC relay include strange noises coming from under the hood when you attempt to start up the air conditioner, as well as unusual smells emanating from areas around where your engine is located.

It’s important to remember that these are just general indicators; if you’re experiencing any of these problems with your vehicle, it’s best to take it into an auto shop for further inspection and diagnosis before attempting any repairs yourself.

How Do You Test an Ac Relay on a Honda Civic?

Testing an AC relay on a Honda Civic is relatively straightforward. First, you will need to open the hood and locate the AC relay. It should be located near the radiator in most models of Honda Civics.

Once you have located it, disconnect its wiring harness from the engine bay. Then run a voltage meter across both terminals of the AC relay and check for continuity. If there is no current flowing through either terminal, then your AC relay has likely failed and needs to be replaced.

Make sure to only use OEM parts when replacing any part of your car’s electrical system as aftermarket parts can cause further problems down the road.

Otherwise, if an appropriate amount of current passes through both terminals then your AC relay is functioning properly. And no further action needs to be taken at this time other than recording these results in case they are needed later during troubleshooting or repairs down the line.

How Do I Know If My Relay Switch is Bad on My Ac Unit?

A bad relay switch on an AC unit could be causing your system to not turn on or not distribute cool air. It’s important to identify if the issue is caused by a failed relay switch in order for it to be fixed properly. If you suspect that your relay switch might be bad, there are several signs that can indicate this problem.

These include hearing a buzzing sound coming from the outside condenser unit when attempting to start the AC, noticing sparks near the contactor, and/or seeing burning marks around the wiring connected to the contactor.

In addition, you may also experience issues with power supply such as flickering lights or tripped circuit breakers when trying to start up your system. If any of these symptoms are present then it’s likely that your relay switch is failing and needs to be replaced.

The best course of action would be contacting an HVAC technician who can diagnose and repair this problem quickly and safely in order for you to get back into a comfortable environment as soon as possible!

Honda Civic 2003-2012 AC FUSE and Relay is causing AC shut down problem

2009 Honda Civic Ac Relay

The 2009 Honda Civic Ac Relay is a small electronic device that helps regulate the flow of power to the air conditioning system in your vehicle. It connects to the main fuse box and allows current to travel from there through several other components before reaching the AC compressor, which is responsible for cooling down the interior of your car.

It’s important to regularly check this relay in order to ensure it’s working correctly, as any issues with it can cause your air conditioner not operate properly.

Mg Clutch Fuse Honda Civic

The Mg Clutch Fuse Honda Civic is a standard component of the vehicle’s electrical system. It protects the clutch from damage caused by high current draw, and it is located in the engine bay fuse box next to the battery. This important fuse should be checked regularly for signs of wear and tear, as any malfunction can result in costly repairs or even total failure of the clutch system.


In conclusion, if you own a 2009 Honda Civic and the air conditioning system is not working properly, the A/C relay location can be found in the engine bay fuse box. Replacing this component may help resolve any issues related to your vehicle’s air conditioning system.

It is important to refer to your owner’s manual for more exact instructions on how to replace or troubleshoot this part of your vehicle.

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