Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
Main Relay
On 3.0L, fuse No. 13 (15-amp) in fuse and relay box, located in left front kick panel, supplies constant battery voltage to one side of main relay. For all other models, slow blow fuse No. 5 in main fuse box, located in front of driver shock tower in engine compartment, supplies constant battery voltage to one side of main relay. On all models, when main relay is energized by ECM, main relay provides voltage to fuel pump relay, oxygen sensors, data link connector (DLC) terminal No. 1, Electronic Control Module (ECM), and various other electrical components.
NO RELATED
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.