Understanding the fuse box layout in your 2016 Nissan Altima is crucial for diagnosing and resolving electrical issues, especially those related to your OBD2 port. While there isn’t a fuse labeled specifically as “OBD2 fuse,” several fuses within your Altima’s fuse boxes power the systems that the OBD2 port relies on. This article will guide you through the fuse box locations and diagrams for your 2016 Nissan Altima, helping you pinpoint the fuses relevant to your OBD2 system and other vital components.
The 2016 Nissan Altima is equipped with multiple fuse boxes, strategically placed throughout the vehicle to protect various electrical circuits. Knowing the location and function of each fuse box is the first step in effective troubleshooting. Let’s explore each fuse box in detail:
1. Instrument Panel Fuse Box
Located inside the vehicle, typically beneath the dashboard on the driver’s side, the Instrument Panel Fuse Box controls many of the Altima’s interior electrical functions. This fuse box is often the first place to check for issues related to interior lights, accessories, and certain electronic control modules.
2016 Nissan Altima Instrument Panel Fuse Box Diagram
An overview diagram showcasing the Instrument Panel Fuse Box in a 2016 Nissan Altima, highlighting its position and general component layout.
Here’s a breakdown of some key fuses within the Instrument Panel Fuse Box:
| Fuse Number | Amperage | Description |
|---|---|---|
| 1 | 10A | Auto Light System, Back-up Lamp, Body Control Module, CVT Control System, Daytime Light System, Door Mirror, Engine Control System, Front Fog Lamp, Front Wiper and Washer System, Homelink Universal Transceiver, Headlamp, Illumination, Intelligent Key System, Inside Mirror, Interior Room Lamp, NVIS, Moonroof, Parking Lamps, License Plate Lamps, Tail Lamps, Power Distribution System, Power Door Lock System, Power Window System, Rear Window Defogger, Tire Pressure Monitoring System, Turn Signal and Hazard Warning Lamps, Vehicle Security System, Warning Chime System |
| 10 | 10A | Back-up Lamp, Body Control Module, Brake Control System, CVT Shift Lock System, Engine Control System, Intelligent Key System, Power Distribution System, Stop Lamp, Intelligent Key System, NVIS, Power Distribution System |
| 15 | 20A | BASE Audio System, Display Audio System, Navigation System, Driver Assistance System |
| 20 & 21 | 20A | Power Socket |
| 30 | 10A | Air Conditioner Control, Compass, Heated Steering Wheel, Homelink Universal Transceiver, Inside Mirror, Power Distribution System, Rear Window Defogger, Engine Control Module, Power Distribution System |
| 31 | 5A | Brake Control System, Charging System, CVT Control System, Daytime Light System, Electronically Controlled Power Steering System, Engine Control System, Front Fog Lamp, Headlamp, Illumination, Combination Meter, Parking Lamps, License Plate Lamps, Tail Lamps, SRS Air Bag Control System, Tire Pressure Monitoring System, Turn Signal and Hazard Warning Lamps, Warning Chime System |
2. Engine Fuse Box (Fuse box #1 & #2)
Located in the engine compartment, these fuse boxes (often split into two sections) manage fuses and relays for critical engine and powertrain components. These boxes protect systems like the engine control module (ECM), fuel pump, ignition system, and cooling fans.
2016 Nissan Altima Engine Fuse Box #1 Diagram
Diagram illustrating the Engine Fuse Box #1 in a 2016 Nissan Altima, showing the arrangement of fuses and their corresponding functions within the engine bay.
2016 Nissan Altima Engine Fuse Box #2 Diagram
Detailed view of the Engine Fuse Box #2 in a 2016 Nissan Altima, emphasizing the fuse layout and their roles in the engine’s electrical system.
Here are some notable fuses from the Engine Fuse Boxes:
(Fuse Box #1)
| Fuse Number | Amperage | Description |
|---|---|---|
| 34 & 35 | 10A | Headlamp High Beam |
| 36 & 37 | 15A | Headlamp Low Beam |
| 38 | 10A | Engine Control Module |
| 39 | 10A | ENG SOL – Engine Control Module |
| 46 | 10A | BCM (Body Control Module), CVT ControlSystem,Engine ControlSystem,Intelligent Key: System, NVIS, Starting System |
| 47 | 15A | Fuel Pump |
| 56 | 10A | ECM BAT – Engine Control Module |
(Fuse Box #2)
| Fuse Number | Amperage | Description |
|---|---|---|
| 59 | 10A | BCM (Body Control Module), Intelligent Key System |
| 60 | 10A | CVT Control System |
| 62 | 10A | Charging System |
| I | MPF2 | Auto Light System, Back-up Lamp, Base Audio System, BCM (Body Control Module), CVT Shift Lock System, Door Mirror, Daytime Light System, Display Audio System, Front Fog Lamp, Front Wiper And Washer System, Headlamp, Illumination, Intelligent Key System, Interior Room Lamp, Moonroof, Navigation System, NVIS, Parking Lamps, License Plate Lamps, Tail Lamps, Power Distribution System, Power Door Lock System, Power Seat For Driver Side, Power Window System, Rear Window Defogger, Tire Pressure Monitoring System, Turn Signal And Hazard Warning Lamps, Trunk Lid Opener, Vehicle Security System, Warning Chime System |
| L & N | MPF2 | Engine Control Module |
3. Instrument Panel – Relays
This section, often located near the Instrument Panel Fuse Box, houses relays that control higher-current circuits within the interior. Relays are essentially electrical switches that allow a small current to control a larger current flow.
2016 Nissan Altima Instrument Panel Relays Diagram
A schematic diagram of the Instrument Panel Relays in a 2016 Nissan Altima, detailing the position and function of each relay component.
Key Relays in this section include:
| Relay Designation | Description |
|---|---|
| R1 | Ignition 2 |
| R2 | Blower Motor |
| R3 | Rear Window Defogger |
| R4 | Accessory 1 |
4. Fusible Link Block
Usually found close to the battery in the engine compartment, the Fusible Link Block contains high-amperage fuses known as fusible links. These protect major electrical systems directly connected to the battery, such as the charging system and main power distribution.
2016 Nissan Altima Fusible Link Block Diagram
Diagram outlining the Fusible Link Block in a 2016 Nissan Altima, emphasizing the high-capacity fusible links and their protection of major electrical circuits connected to the battery.
Fusible Links in this block are labeled with letters:
| Link Designation | Description |
|---|---|
| A | Generator, Starter, Fuses B, C, D |
| B | Fuses 59, 60, 62, 63, G, H, I, L, M, N |
| C | Headlamp High Relay (Fuses 34, 35), Headlamp Low Relay (Fuses 36, 37), Tail Lamp Relay (Fuses 51, 52), Front Wiper Relay, Fuses 41, 42, 43 |
| D | Power Steering Control Module |
| E | Engine Control Module Relay (Fuses 38, 39, 40), Ignition Relay 1 (A/C Relay, Cooling Fan Relay 1, Fuses 44, 45, 47, 48, 49, 50), Fuses 53, 55, 56 |
Finding Fuses Related to the OBD2 Port
While no single fuse is specifically labeled “OBD2,” the OBD2 port’s functionality is tied to the car’s computer systems. Therefore, fuses related to the Engine Control Module (ECM) and Body Control Module (BCM) are critical for OBD2 port operation.
Based on the fuse diagrams, focus on these fuses when troubleshooting OBD2 port issues:
- Instrument Panel Fuse Box: Fuses 1 and 10 (BCM, Engine Control System, Power Distribution System)
- Engine Fuse Box #1: Fuses 38, 39, 46, and 56 (Engine Control Module, BCM)
- Engine Fuse Box #2: Fuses I, L, and N (BCM, Engine Control Module, Power Distribution System)
Troubleshooting and Fuse Replacement
If you’re experiencing issues with your OBD2 port, such as a scanner not powering on or failing to communicate, check these fuses first. Always consult your 2016 Nissan Altima owner’s manual for the most accurate fuse locations and descriptions.
Steps for Checking and Replacing Fuses:
- Turn off the ignition and ensure the car is completely off.
- Locate the relevant fuse box. Refer to your owner’s manual for precise locations.
- Open the fuse box cover.
- Identify the fuse you suspect is blown using the diagrams provided and your owner’s manual.
- Use a fuse puller (often found in one of the fuse boxes or your car’s tool kit) to carefully remove the fuse.
- Inspect the fuse. A blown fuse will usually have a broken wire inside.
- Replace the blown fuse with a new fuse of the exact same amperage. Never use a fuse with a higher amperage rating.
- Close the fuse box cover.
- Test the system to see if the issue is resolved.
Important Note: If fuses blow repeatedly, it indicates a more significant underlying electrical problem that requires professional diagnosis. Do not simply replace fuses continuously without addressing the root cause.
By understanding the fuse box layout and identifying the fuses associated with your 2016 Nissan Altima’s OBD2 system, you can effectively troubleshoot common electrical issues and maintain your vehicle’s diagnostic capabilities. Always prioritize safety and consult a qualified technician for complex electrical problems.
