2014 Nissan Pathfinder Ac Relay Location

If you're experiencing air conditioning problems in your 2014 Nissan Pathfinder, a faulty AC relay could be the culprit. Locating and replacing this relay is often a straightforward process that can save you a trip to the mechanic. This guide will provide clear instructions and helpful information on finding the 2014 Nissan Pathfinder AC relay location.

Understanding the AC Relay and Its Function

Before diving into the location, it's crucial to understand what an AC relay does. A relay is essentially an electrically operated switch. In the context of your car's air conditioning system, the AC relay allows a small electrical current from the AC control switch to control a larger current that activates the AC compressor. The compressor is responsible for circulating refrigerant, which is vital for cooling the air inside your vehicle.

When you turn on your AC, the AC control switch sends a signal to the relay. If the relay is functioning correctly, it closes the circuit, sending power to the compressor. If the relay is faulty, it may not close the circuit, preventing the compressor from engaging, and resulting in warm air blowing from your vents.

Common Symptoms of a Faulty AC Relay:

Air conditioning not working (blowing warm air)
AC compressor not engaging (you won't hear the characteristic click when the AC is turned on)
Intermittent AC function (AC works sometimes, but not others)
Clicking sound from the relay itself

Locating the 2014 Nissan Pathfinder AC Relay

The AC relay in your 2014 Nissan Pathfinder is typically located in one of two places: either in the engine compartment fuse box or in the fuse box located inside the cabin, often near the driver's side dashboard. Let’s explore both locations in detail.

Engine Compartment Fuse Box

This is the most common location for the AC relay. Follow these steps to find it:

Locate the Fuse Box: Open the hood of your 2014 Nissan Pathfinder. Look for a black, rectangular box. It's usually situated near the battery or one of the fenders. The fuse box will have a lid or cover.
Open the Fuse Box: Most fuse box covers have clips or tabs that you need to release to remove the cover. You might need a small flathead screwdriver to gently pry the cover open.
Consult the Fuse Box Diagram: Inside the fuse box cover, you should find a diagram that identifies each fuse and relay. This diagram is crucial for locating the AC relay. Look for a symbol or label that says "AC Compressor Relay," "A/C Relay," or something similar. The diagram will also show the location of each relay and fuse within the box.
Identify the Relay: Once you've found the AC relay on the diagram, locate the corresponding relay in the fuse box. Relays are typically small, cube-shaped components.

Interior Fuse Box (Dashboard Area)

In some cases, the AC relay might be located in a fuse box inside the vehicle. Here’s how to check:

Locate the Interior Fuse Box: The interior fuse box is usually located under the dashboard on the driver's side. You might need to get down on your hands and knees to see it properly. Some vehicles have a small access panel that you need to remove to access the fuse box.
Open the Fuse Box: Similar to the engine compartment fuse box, the interior fuse box will have a cover that needs to be removed.
Consult the Fuse Box Diagram: Again, the fuse box cover should have a diagram. Check it for the AC relay, using the same keywords as before (AC Compressor Relay, A/C Relay).
Identify the Relay: Locate the relay within the fuse box that matches the diagram.

Important Note: The specific location of the AC relay may vary slightly depending on the trim level and specific options of your 2014 Nissan Pathfinder. Always refer to the fuse box diagram for accurate identification.

Testing the AC Relay

Once you've located the AC relay, you can test it to determine if it's faulty. Here are a couple of methods:

The Swap Test: This is the easiest and most common method. Locate another relay in the fuse box that is identical to the AC relay (same part number and specifications). A common candidate is the horn relay or a similar non-essential relay. Swap the AC relay with the known good relay. If the AC now works, and the component previously controlled by the swapped relay (e.g., the horn) no longer works, then the original AC relay is likely faulty. Remember to put the original relay back if the AC still doesn’t work!
Using a Multimeter: A multimeter can be used to test the continuity and resistance of the relay. This method requires some electrical knowledge and understanding of how relays work. You'll need to identify the coil terminals and the switch terminals on the relay and use the multimeter to test for continuity when the coil is energized. If you're not comfortable using a multimeter, it's best to consult a qualified technician.

Replacing the AC Relay

If you've determined that the AC relay is faulty, replacing it is usually a simple process:

Purchase a New Relay: Buy a replacement AC relay that is compatible with your 2014 Nissan Pathfinder. You can find these at most auto parts stores or online retailers. Make sure to match the part number and specifications of the original relay.
Disconnect the Battery (Optional but Recommended): To prevent any accidental electrical shorts, it's a good idea to disconnect the negative terminal of your car battery before replacing the relay.
Remove the Old Relay: Carefully pull the old relay out of the fuse box. It may be a tight fit, so use a gentle, rocking motion to loosen it.
Install the New Relay: Align the new relay with the connector in the fuse box and push it in firmly until it is fully seated.
Reconnect the Battery (if disconnected): If you disconnected the battery, reconnect the negative terminal.
Test the AC: Start your car and turn on the AC to see if it is working properly.

Additional Tips and Considerations

Fuse Inspection: Before replacing the AC relay, inspect the AC fuse in the fuse box. A blown fuse can also prevent the AC compressor from engaging. Replace the fuse if it is blown.
Wiring Issues: If replacing the relay and fuse doesn't solve the problem, there may be other issues with the AC system, such as a faulty AC compressor, low refrigerant levels, or wiring problems. In this case, it's best to consult a qualified mechanic.
Consult a Professional: If you're not comfortable working with electrical components or are unsure about any of the steps involved, it's always best to seek the assistance of a qualified automotive technician.

Conclusion

Locating and replacing the AC relay in your 2014 Nissan Pathfinder can be a relatively simple DIY task that can restore your air conditioning system. By following the steps outlined in this guide, you should be able to identify the relay's location, test it, and replace it if necessary. Remember to always consult the fuse box diagram and take necessary safety precautions when working with electrical components. If you encounter any difficulties or are unsure about any aspect of the process, don't hesitate to seek professional help. A properly functioning AC system is essential for comfortable driving, especially during hot weather, so taking the time to address AC problems promptly is well worth the effort.