2022 Jeep Grand Cherokee – Fuse Box Diagram & Amperage

Quick Answer

The 2022 Jeep Grand Cherokee has three main fuse box locations: under the hood, under the dashboard (passenger side kick panel), and in the cargo area (right rear trim panel).

Under-Hood Fuse Box (Power Distribution Center)

The under-hood fuse box, also known as the Power Distribution Center (PDC), is located in the engine compartment, typically on the driver's side, near the battery. It contains high-amperage fuses and relays for critical systems.

Relays in Under-Hood Fuse Box:

• R1: Starter Relay
• R2: Fuel Pump Relay
• R3: HVAC Blower Relay
• R4: A/C Clutch Relay
• R5: Headlight Low Beam Relay
• R6: Headlight High Beam Relay
• R7: Cooling Fan Low Relay
• R8: Cooling Fan High Relay
• R9: Ignition Coil/PCM Relay

Passenger Side Dashboard Fuse Box (Junction Block)

The dashboard fuse box, also known as the Junction Block, is located on the passenger side of the cabin, behind the kick panel. This fuse box typically houses fuses for interior electrical components and accessories.

Cargo Area Fuse Box

The cargo area fuse box is located in the right rear trim panel of the cargo area. This fuse box usually controls accessories in the rear of the vehicle, such as the rear power outlet, power liftgate, and other cargo area functions.

Note on Trim Variations: Fuse configurations can vary slightly between different trim levels (e.g., Laredo, Limited, Overland, Summit) and optional packages. Always consult the fuse legend printed on the inside of the fuse box cover specific to your vehicle for the most accurate information.

How to Test a Fuse

Testing a fuse is a straightforward process. You will need a fuse puller (usually found in one of the fuse boxes) and a multimeter or a fuse tester.

1. Locate the suspected fuse: Refer to the fuse box diagrams and the legend on the fuse box cover.
2. Turn off the ignition: Ensure the vehicle is off to prevent electrical surges or accidental shorts.
3. Remove the fuse: Use the fuse puller to carefully remove the fuse from its slot.
4. Inspect visually: Many fuses have a visible wire inside. If this wire is broken or melted, the fuse is blown. However, some blown fuses might not be visibly obvious.
5. Test with a multimeter (Ohm setting): Touch the multimeter probes to the two metal terminals on top of the fuse. A good fuse will show very low resistance (close to 0 ohms) or continuity. A blown fuse will show infinite resistance or no continuity.
6. Test with a fuse tester: Insert the fuse into the tester. If the light on the tester illuminates, the fuse is good. If it doesn't, the fuse is blown.
7. Replace with a new fuse: If the fuse is blown, replace it with a new fuse of the exact same amperage rating and color. Using a fuse with a different amperage can damage your vehicle's electrical system.

Common Blown Fuses on This Vehicle

While any fuse can blow, some are more commonly affected due to their circuits' frequent use or higher load:

• Cigar Lighter/12V Outlets (F31, F32, F50): These fuses often blow due to short circuits from faulty charging accessories or overloading the outlet with high-power devices. If your phone charger or air compressor stops working, check these first.
• Blower Motor (F05): A failing blower motor or an obstruction in the blower motor assembly can cause this fuse to blow, leading to a loss of HVAC fan function.
• Radio/Infotainment (F30): Issues with aftermarket installations, software glitches, or internal component failures can sometimes lead to this fuse blowing, causing the infotainment system to stop working.
• Headlights (F08, F09, F10, F11): While less common with modern LED systems, a short in the wiring or a faulty headlight assembly could potentially blow these fuses. If one or both headlights are out, these are worth checking.
• Trailer Brake Controller (F14): If you frequently tow and use the trailer brake system, a short in the trailer wiring or an issue with the trailer brake controller itself can cause this fuse to blow.

What to Check First: Before assuming a blown fuse, always ensure the component or system you're having trouble with is correctly connected and powered on. For example, if a 12V outlet isn't working, try a different device. If a light is out, check the bulb if it's a replaceable type. Then, consult your vehicle's owner's manual for specific troubleshooting steps and the most accurate fuse diagrams.

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