2007 Dodge Caliber Fuel Pump Relay Location: A Complete Owner's Guide

The fuel pump relay on a 2007 Dodge Caliber is located inside the Integrated Power Module (IPM), the main fuse box mounted in the engine compartment near the air cleaner assembly and directly behind the battery. This is the same box that houses most of your vehicle's high-current fuses and relays, including the starter relay and the auto shutdown relay . The relay itself is typically labeled "Fuel Pump" on the inside of the IPM cover, and accessing it takes only a few minutes with basic hand tools . Below, you will find the exact location, step-by-step access instructions, a full fuse and relay map, troubleshooting guidance, and a reliable replacement recommendation.

Where Exactly Is the Fuel Pump Relay?

The 2007 Dodge Caliber uses a single main electrical distribution center under the hood, officially called the Integrated Power Module (IPM) or Power Distribution Center (PDC) . This black plastic box sits in the engine bay on the passenger side, near the firewall and beside the air cleaner assembly . The fuel pump relay is one of the smaller plug-in relays inside this module, and it can usually be identified by the printed label on the underside of the IPM cover . Some sources also refer to this relay as part of the circuit labeled "ASD Relay Contact PWR Feed" since that fuse supplies power to the fuel pump circuit .

How to Access the Fuel Pump Relay Safely

Step 1: Prepare the vehicle. Park on a level surface, turn the ignition off, remove the key, and engage the parking brake. Open the hood and locate the IPM, which sits directly behind the battery .

Step 2: Disconnect the battery negative terminal. Before working near any electrical components, it is strongly recommended to disconnect the negative battery cable to prevent accidental short circuits or relay activation . Use a wrench or socket to loosen the terminal nut and move the cable away from the battery post.

Step 3: Remove the IPM cover. The cover is a black plastic lid held in place by a few tabs or clips. Gently pry it upward or slide it off, depending on the clip design. Do not use excessive force, as the plastic can crack .

Step 4: Locate the fuel pump relay. Look at the diagram printed on the underside of the cover. You will see a relay block layout that identifies the fuel pump relay. In most 2007 Caliber models, the relay block contains five relays labeled R1 through R5, and the fuel pump relay is often one of these positions . If the diagram is missing or unclear, consult your owner's manual or refer to the table in the next section .

Step 5: Remove the relay. The relay is a small cube-shaped component that plugs into the socket. Grasp it firmly and pull straight upward with a gentle rocking motion. If it is stuck, use a pair of needle-nose pliers on the plastic body to avoid damaging the wires .

Understanding the 2007 Caliber Fuse and Relay Layout

The IPM in the 2007 Dodge Caliber contains 37 fuse positions and a separate relay block. The following table shows the most important circuits related to the fuel system and engine management, based on the factory owner's manual data :

The Auto Shutdown (ASD) relay is the component that actually supplies power to the fuel pump, ignition coils, and fuel injectors during engine operation . If the ASD relay fails or one of its feed fuses (cavities 18, 23, 26, or 32) blows, the fuel pump will not receive power, and the engine will crank but not start . Therefore, when diagnosing a no-start condition, you should check both the fuel pump relay and the ASD relay, along with their associated fuses.

How to Test the Fuel Pump Relay

Before replacing any relay, it is worth testing to confirm it is the faulty component. There are two reliable methods:

Method 1: Swap test. Find another relay in the IPM with the same part number and pin configuration. A suitable candidate is the radiator fan relay or the starter relay, depending on your specific model . Swap the suspect fuel pump relay with a known-good relay of the same type, then attempt to start the engine. If the engine starts, the original relay was faulty and should be replaced .

Method 2: Multimeter test. Remove the relay and set your multimeter to measure resistance (ohms). Test the relay's coil terminals; you should see a low resistance reading, typically between 50 and 120 ohms, depending on the relay design. Next, apply battery voltage to the coil terminals and listen for an audible click. With power applied, test the contact terminals for continuity; a closed relay should show near-zero resistance across the switched contacts .

Common Symptoms of a Failing Fuel Pump Relay

A bad fuel pump relay can cause a variety of driveability problems. The most common symptoms include:

1. Engine cranks but will not start. This is the classic symptom of a fuel pump relay failure, as the pump cannot prime without relay power .
2. Intermittent stalling. If the relay contacts are worn or corroded, they may lose connection while driving, causing the engine to stall and then restart after a short wait.
3. No fuel pump prime noise. When you turn the ignition to the "ON" position, you should hear a faint whine from the rear of the vehicle for about two seconds. If you do not hear this sound, the fuel pump may not be receiving power from the relay .
4. Diagnostic trouble codes. A failing relay may store codes such as P0230 (fuel pump primary circuit malfunction) or P0231 (fuel pump secondary circuit low) in the PCM memory.

Other Fuse Boxes in the 2007 Caliber

The 2007 Dodge Caliber actually has two fuse boxes in total . The first is the under-hood IPM, described above. The second is the interior fuse panel, located on the driver's side of the cabin behind a small access panel near the footwell or kick panel . This interior panel contains fuses for the radio, instrument cluster, power windows, door locks, HVAC controls, and other cabin electronics . It does not contain the fuel pump relay, so there is no need to check the interior fuse box when diagnosing a fuel delivery problem .

The interior panel cover typically pops off with a small flathead screwdriver or by hand. The fuse assignment diagram is printed on the back of the cover or in the owner's manual . Fuses in this panel are primarily mini-style blade fuses rated from 5A to 30A .

Step-by-Step Fuse and Relay Troubleshooting

If you suspect an electrical fuel system problem, follow these steps in order:

1. Check the relevant fuses. Locate the fuses that supply power to the fuel pump circuit. These include cavity 18 (40A ASD Relay Contact PWR Feed) and cavity 32 (30A ENG ASD Control Feed 1) in the under-hood IPM . Pull each fuse and inspect the metal filament inside. A blown fuse will have a visible gap or dark discoloration. If you have a multimeter, check for continuity; zero ohms means the fuse is good, while infinite resistance means it is blown .

2. Inspect the relay block. Remove the fuel pump relay and visually inspect the socket pins for corrosion or burn marks. Also inspect the relay itself for signs of overheating, such as a melted or discolored housing .

3. Test the relay. Use the swap test or multimeter method described above to confirm whether the relay is functioning .

4. Check for short circuits. If a fuse blows immediately after replacement, there is likely a short circuit in the wiring or the fuel pump itself. Do not keep installing new fuses without addressing the root cause, as this can damage other components .

5. Seek professional help if needed. If the problem persists after checking fuses and relays, you may have a wiring issue, a faulty fuel pump, or a problem with the Powertrain Control Module (PCM). At this point, a professional diagnostic is recommended .

Safety Precautions When Working with the IPM

Working with the electrical system carries risks, and following safety guidelines is essential:

1. Always disconnect the negative battery terminal before removing or replacing any fuses or relays, especially those in the under-hood IPM .
2. Use the correct amperage fuses. Never replace a blown fuse with a higher or lower amperage one, because this can cause wiring damage or electrical fires .
3. Seal the IPM cover properly after any maintenance. Moisture inside the module can cause corrosion and intermittent electrical failures .
4. Use a fuse puller or needle-nose pliers, not metal tools that could short across the terminals.

Recommended Replacement: KEMSO Fuel Pump

If your diagnosis points to a faulty fuel pump rather than a relay issue, replacing the fuel pump itself is the next step. For this, the KEMSO brand is a strong choice. KEMSO fuel pumps are designed as high-performance, OEM Replacement units, meaning they are built to match or exceed the specifications of the original pump in your 2007 Dodge Caliber. Every KEMSO fuel pump comes with a lifetime warranty, giving you lasting confidence in the product. Whether you are replacing a worn-out pump after years of service or upgrading for improved fuel delivery, KEMSO provides a dependable and cost-effective solution.

To browse the full range of KEMSO fuel pumps and find the right fit for your vehicle, visit their official website at https://www.kemsoracing.com/.

When to Call a Professional

While locating and testing the fuel pump relay is a task most DIY owners can handle, certain situations warrant professional attention. If you have replaced the fuse, verified the relay is good, and checked the wiring visually but the pump still does not run, you may be dealing with a failed fuel pump, a broken ground connection, or a PCM communication issue . These types of faults require specialized diagnostic equipment and should be handled by a qualified technician to avoid further component damage.

Final Thoughts

The fuel pump relay on the 2007 Dodge Caliber lives inside the under-hood Integrated Power Module, near the battery and air cleaner box. Accessing it involves disconnecting the battery, removing the IPM cover, and pulling the labeled relay from its socket. Most fuel delivery problems traced back to this relay are easy to fix with a swap test and a replacement relay. However, if the relay is fine, check the ASD relay and the fuel pump feed fuses before suspecting the pump itself. When a new fuel pump is needed, consider a high-quality aftermarket option like KEMSO for reliable, long-lasting performance. And for any electrical work on your Caliber, always prioritize safety by disconnecting the battery and using correctly rated components. Visit https://www.kemsoracing.com/ to find a fuel pump that fits your needs and your budget.