Locate the central power panel beneath the dashboard on the driver’s side for quick identification of circuits controlling lights, audio, and climate systems. Use the reference chart inside the cover to match each slot with its respective component, ensuring precise troubleshooting without guesswork.
Check auxiliary connections near the engine compartment for high-current modules such as the cooling fans and starter relay. Observing the numbered guide allows safe removal and replacement of any malfunctioning element without risking damage to surrounding electronics.
Verify interior connections behind the glove compartment for entertainment and safety features. Labels correspond directly with the printed map provided in the owner’s manual, helping technicians or owners pinpoint specific lines efficiently and prevent accidental circuit interruptions.
Document any modifications to aftermarket lighting or audio systems by marking altered pathways. Accurate notes on relocated or replaced slots maintain operational clarity and simplify future maintenance or inspections.
2013 Infiniti QX56 Electrical Layout Reference
Check the main power distribution box behind the glove compartment for label identification before attempting replacements. Each slot has a unique rating, usually printed directly on the lid.
For passenger compartment accessories, locate the secondary box near the driver’s side footwell. It contains modules controlling lighting circuits, seat heaters, and audio components.
- Headlight circuits: 15A
- Interior lighting: 10A
- Power seats: 25A
- Audio amplifier: 30A
The engine bay panel handles high-current circuits. Look for the starter relay, cooling fans, and transmission control fuses. Misplacement can trigger engine immobilizer warnings.
Replacement and Safety Tips
- Always disconnect the negative battery terminal before removing any protective element.
- Use the exact amp rating marked on the cover; mismatches may blow multiple circuits.
- Keep a small tester or multimeter handy to confirm continuity after installation.
Label each extracted component to avoid confusion. Multiple slots appear identical but govern different systems such as cruise control, horn, and windshield wipers.
Check the owner’s manual supplement for the auxiliary panel located in the rear cargo area. This often controls trailer connections, rear AC, and optional seating functions.
Keep a log of replacements, especially for high-load circuits like the sunroof motor or power liftgate. Tracking failures helps identify wiring harness faults before serious damage occurs.
Locating the Interior and Engine Compartment Fuse Boxes
Access the cabin junction box by opening the driver’s side door and removing the lower dashboard panel beneath the steering column. The enclosure is secured with two push clips; releasing them allows the cover to swing open, revealing rows of color-coded protectors labeled for lighting, audio, and climate control circuits.
The engine bay control panel sits near the battery on the driver’s side. Lift the black plastic lid marked with circuit symbols to expose heavy-duty breakers for the ignition system, radiator fan, and fuel pump. A small retaining tab locks the cover in place; pressing it downward releases the assembly without tools.
Inside each compartment, slots are aligned in a grid pattern with identification numbers molded into the plastic next to each slot. Keep a flashlight handy to read the fine labels, which indicate amperage ratings and the specific devices they safeguard. Refer to the stamped chart on the underside of the cover for a quick reference of circuit positions.
For troubleshooting, always disconnect the negative terminal of the battery before removing any protectors. Use needle-nose pliers to extract faulty units, and avoid forcing components into misaligned sockets. Proper orientation and snug seating ensure that each protector resumes correct operation, preventing electrical faults or intermittent power loss to critical systems.