In this article, we’ll guide you on how to perform the AC compressor relay bypass in 5 easy-to-follow steps.
Table of Contents
How to Perform AC Compressor Relay Bypass
By bypassing the relay, you can discern if the relay itself is the obstacle preventing your compressor from working. This is a diagnostic measure, not a long-term solution. Here’s how to safely execute it:
Preparation: Before proceeding, make sure the vehicle is turned off, keys are removed from the ignition, and you’re wearing rubber gloves. This ensures that there’s no electric current flow and reduces the risk of any accidental electrical shock.
Remove the relay: Hold the relay firmly with your fingers, or for a better grip, use needle-nose pliers or a relay puller tool (This QWORK Relay Puller Plier on Amazon can aid you in performing this task). Gently wiggle the relay while pulling it upwards to remove it from its socket. Store it in a safe place to prevent damage or loss.
Create the bypass: You’ll need a jumper wire, which is a short electrical wire with exposed metal ends. Insert each end of this wire into the two primary (usually larger) terminals where the relay was placed. This direct connection is your bypass, allowing power to flow continuously to the AC compressor.
Test the system: With the bypass in place, start your vehicle and activate the AC. If the compressor initiates, it’s a strong indication that the relay may be defective. If there’s no change, the problem might lie elsewhere in the system.
Revert to the original state: After your assessment, turn off the car and carefully remove the jumper wire. Replace the AC compressor relay into its original socket by pushing it down until it’s seated firmly. This step ensures your car returns to its standard configuration.
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Locating the AC Compressor Relay
If you don’t know the location of the AC compressor relay, the steps below will guide you:
Open your vehicle’s hood: Ensure your car is on a flat surface and the engine is turned off. Pull the hood release lever, typically found near the driver’s side door frame. Stand in front of the car and lift the hood using the exterior latch.
Locate the fuse box: Most cars house the fuse box near the battery, but it can also be found on the driver’s side, often under a labeled cover.
Find the diagram: Inside the fuse box cover, there’s typically a diagram that serves as a map. This map will detail the position and function of each relay and fuse. Here, you’ll want to find the “ac compressor relay location” label.
Identify the relay: Once you’ve found the relay’s depiction on the diagram, compare it to the actual components in the fuse box. Take a mental or physical note (maybe even a photo) of its position as you’ll be referring back to it soon.