2015 Dodge Dart Fuse Box Diagram: 2026 Troubleshooting
The 2015 Dodge Dart features two main fuse centers: the Power Distribution Center (PDC) located in the engine bay next to the battery, and the interior panel behind the driver-side instrument panel. The engine PDC contains high-amp fuses (30A–60A) protecting the ECU, ABS, and starter circuit, while the interior panel protects cabin electronics.
📌 Key Takeaways
- The engine compartment PDC houses high-current Maxi fuses (30A-60A) and critical system relays.
- Interior body control module (BCM) fuse block controls lighting, radio, and power accessories.
- Blown ECU or fuel pump fuses trigger a check engine light and non-start conditions.
- Always use a plastic fuse puller and replace blown fuses with exact amperage ratings.
- A digital multimeter or 12V test light is required to check fuse continuity accurately.
Navigating the electrical architecture of the 2015 Dodge Dart requires a precise understanding of its dual power distribution hubs: the Power Distribution Center (PDC) located under the hood and the Interior Junction Block integrated into the Body Control Module (BCM). Whether you are diagnosing a no-crank condition on the 2.0L Tigershark, troubleshooting MultiAir actuator faults on the 1.4L Turbo, or tracing power loss to the 2.4L powertrain control system, referencing an accurate power schema is essential. According to OEM factory service specifications, these fuse panels route raw battery amperage into regulated sub-circuits, safeguarding sensitive microprocessors and high-draw mechanical actuators against overcurrent damage.
2015 Dodge Dart Fuse Box Diagram Layout and Component Identification
The electrical system of the 2015 Dodge Dart relies on two primary electrical centers. The underhood Power Distribution Center (PDC) is located on the driver-side engine compartment, directly adjacent to the battery assembly. It houses high-amp Maxi-fuses, mini-blade fuses, and system control relays that supply high-voltage components such as the starter motor, radiator cooling fan, electronic power steering, and fuel pump. The interior fuse panel is mounted behind the driver-side lower instrument panel cover, integrated into the BCM assembly to manage cabin electronics, lighting, instrument cluster feeds, and low-current signal circuits.
When analyzing the primary underhood power distribution array, individual slots are categorized by amperage capacity and functional priority. High-draw circuits utilize cartridge-style Maxi-fuses (30A to 60A), whereas sensitive sensor circuits employ low-profile mini-blade fuses (5A to 20A). Below is the comprehensive pinout and amperage mapping table for the primary PDC circuits found in 2015 Dodge Dart models.
| Fuse / Relay Slot | Rating (Amps) | Circuit Description & Wire Color | Target System / Component |
|---|---|---|---|
| F01 | 50A Maxi | Red/Gray (RD/GY) | Radiator Fan Motor High Speed Relay |
| F02 | 60A Maxi | Red (RD) | Interior Junction Block / BCM Main Feed |
| F06 | 15A Mini | Pink/Yellow (PK/YL) | Engine Control Module (ECU) Power Supply |
| F10 | 10A Mini | Dark Blue/Orange (DB/OR) | A/C Compressor Clutch Relay & Active Grille Shutter |
| F12 | 30A Cartridge | Red/Yellow (RD/YL) | Starter Solenoid Relay |
| F21 | 15A Mini | Brown/Violet (BR/VT) | Fuel Pump Module Relay Supply |
| F22 | 10A Mini | Yellow/Dark Blue (YL/DB) | Variable Valve Timing (VVT) Solenoids & Cam Sensors |
| F23 | 10A Mini | Dark Green/White (DG/WT) | Oil Pressure Switch & Engine Sensor Array |
| R01 | 4-Pin ISO Relay | Black/Violet (BK/VT) Trigger | Starter Relay Control |
| R03 | 4-Pin ISO Relay | Brown/Yellow (BR/YL) Control | Powertrain Control Relay (ECU Main Power) |
Factory torque spec for the main B+ terminal stud on the underhood PDC is 9 N·m (80 in-lbs). Over-tightening can crack the underlying plastic busbar, leading to intermittent open circuits, while under-tightening causes resistive heating and voltage drop.
Underhood Power Distribution Center (PDC) Architecture
The underhood PDC utilizes a multi-layer copper busbar architecture to distribute raw battery power from the primary positive terminal lead. Direct battery current feeds into the main fuse bus bar before branching into secondary relay contact pins. Ground paths for low-current control circuits are routed through specialized harness eyelets grounded to the left front frame rail chassis point (G104).
Interior Fuse Panel Assembly and BCM Integration
Inside the cabin, the secondary fuse array is mounted physically onto the Body Control Module. Unlike traditional passive fuse blocks, this assembly incorporates intelligent solid-state drivers alongside micro-fuses. Circuit power pass-throughs regulate interior ambient lighting, diagnostic link connectors, power windows, and central locking functions. Always isolate battery power prior to servicing harness connectors on the BCM to prevent micro-processor corruption.
Electrical Faults and Symptoms Linked to the 2015 Dodge Dart Fuse Box Diagram
Intermittent electrical faults in the 2015 Dodge Dart often trace back to terminal fretting, corroded relay sockets, or blown fuses within the underhood PDC. Because modern vehicle communication network architectures link sensor operation directly to power distribution integrity, a single blown fuse can manifest as multiple unrelated system failures.
Never bypass a blown fuse with higher amperage ratings or jumper wire bridge connections. The thin-gauge wiring harnesses in the 2015 Dodge Dart are strictly matched to fuse ratings; installing improper fuses risks harness melt-down or thermal component damage.
Engine Control Module (ECU) Power Failure and Check Engine Light
When fuse F06 (15A) or relay R03 experiences elevated resistance or physical circuit rupture, the Engine Control Module (ECU) loses uninterrupted supply voltage. This condition immediately triggers a illuminated check engine light on the instrument cluster, accompanies a no-crank condition, and halts serial CAN-bus communications between engine sensors and the dashboard. Diagnostics will typically reveal no-communication faults across the network.
Coolant Flow Fan Relay Failure and Overheating Conditions
Thermal management in the 2015 Dart depends heavily on precise coolant flow through the radiator, dictated by the dual-speed electric cooling fan. High-amp fuse F01 (50A) feeds the primary cooling fan high-speed relay. If this fuse blows due to fan motor internal resistance spikes, coolant temperatures elevate rapidly during idle conditions. This thermal buildup can cause ambient engine bay heat soak, resulting in engine protection derating strategies or secondary thermal failures along the cylinder head gasket boundary.
Oil Pressure Switch Circuit Drops and Sensor False Positives
Fuse F23 (10A) delivers key-on reference voltage to critical engine operating sensors, including the oil pressure sensor switch and phase sensors monitoring the engine timing chain position. Voltage drops across F23 terminals caused by pin corrosion produce false low-oil-pressure warning alerts on the driver information display, even when actual mechanical oil pressure meets OEM specifications. For detailed guidance on tracing underlying sensor wiring faults, refer to our comprehensive Dodge Dart engine wiring harness schematic guide.
Diagnosing Electrical Circuits via OBD-II Diagnostic Code and Voltage Testing
To systematically troubleshoot electrical faults using the 2015 Dodge Dart fuse box diagram, professional technicians follow a structured isolation protocol combining diagnostic scanning, voltage drop testing, and terminal inspection.
When testing fuses with a Digital Multimeter (DMM), set the meter to DC Volts and probe both top test pads of the fuse while installed. A functional fuse shows 0.00V across its pads (zero voltage drop). A reading of system battery voltage (12.6V) across the pads indicates an open circuit (blown fuse).
Step 1: Pulling Stored Diagnostic Codes via the OBD-II Port
Begin by connecting an advanced diagnostic scan tool to the 16-pin OBD-II port located under the driver’s side dash. Scan all systems—including PCM, BCM, and ABS modules—for active or pending fault codes. Record every stored diagnostic code. Specific fault codes point directly toward power supply disruptions within the fuse box:
- P0685: ECM/PCM Power Relay Control Circuit Open (Points to PDC Relay R03 or Fuse F06).
- P0688: ECM/PCM Power Relay Sense Circuit Low Voltage.
- P0480 / P0481: Cooling Fan 1 / 2 Control Circuit Malfunction (Points to Fuse F01/F10 or Cooling Fan Relays).
- P0522: Engine Oil Pressure Sensor/Switch Circuit Low Voltage (Points to Fuse F23 voltage drop).
- P0010 / P0013: Camshaft Position Actuator Circuit Issue (Points to Fuse F22 supply interruption).
If you encounter broader network communication drops alongside power loss codes, review our technical guide covering Chrysler CAN-bus network diagnostic protocols for standard isolation procedures.
Step 2: Performing Voltage Drop and Continuity Testing
Turn the ignition switch to the RUN position. Connect the black probe of your DMM to a clean chassis ground point (such as the shock tower bolt). Touch the red probe to both test points located on the back of the suspect fuse. If battery voltage (approximately 12.6V) is detected on one side but 0V on the opposite side, the fuse wire element is open and requires replacement.
If voltage is missing on both sides of a fuse that should have constant power, trace upstream to the main PDC power feed lug. Verify that terminal nut torque matches factory specifications to ensure solid metal-to-metal contact with the main battery busbar cable.
Step 3: Checking Relay Coils and High-Load Ground Rails
Remove suspect relays (e.g., Starter Relay R01 or ECM Relay R03) and measure resistance across control coil terminals 85 and 86 using your multimeter. Standard ISO mini-relays on the 2015 Dodge Dart should display between 60 to 100 ohms of resistance across the coil. An infinite resistance reading indicates an open internal coil wind. Additionally, test continuity between terminal pin 30 and the fuse supply socket to ensure no micro-fractures exist inside the internal PDC busbar circuit pathways.
For additional insights into resolving secondary power delivery glitches within body accessories, visit our reference article on automotive Body Control Module troubleshooting methods.
2015 Dodge Dart Fuse Box Diagram Frequently Asked Questions
Where is the 2015 Dodge Dart fuse box located?
The 2015 Dodge Dart features two primary fuse boxes. The main underhood Power Distribution Center (PDC) is located in the engine compartment on the driver’s side, directly next to the battery. The interior fuse box is integrated into the Body Control Module (BCM), positioned under the driver’s side dashboard behind the lower removable trim panel near the pedal assembly.
Which fuse controls the ECU and fuel system in a 2015 Dodge Dart?
The Powertrain Control Module / Engine Control Module (ECU) main power feed is supplied by mini-fuse F06 (15-amp) located in the underhood PDC, alongside main power relay R03. The fuel pump assembly circuit is protected by fuse F21 (15-amp) in the underhood PDC, which feeds switched battery power directly through the fuel pump relay contact terminal.
How do I identify a blown fuse without pulling it out of the panel?
You can identify a blown fuse without removal by setting a Digital Multimeter to DC Volts, grounding the negative lead, and probing the two small exposed metallic test pads on the top exposed face of the mini-blade fuse. If both test pads read system voltage (~12.6 volts), the fuse is intact. If one pad reads system voltage while the other reads zero volts, the fuse element is blown.
What causes the radiator fan fuse to repeatedly blow in a 2015 Dart?
Repeated failure of radiator fan fuse F01 (50-amp Maxi) is typically caused by elevated electrical current draw from a binding or failing electric cooling fan motor, internal shorting within the fan motor windings, or a seized radiator fan bearing assembly. It can also be caused by short-to-ground faults in the primary fan power harness passing along the lower radiator support structure.
What is the correct terminal torque spec for the main PDC battery cable bolt?
The factory-specified torque spec for the primary B+ battery cable retention nut on the 2015 Dodge Dart underhood Power Distribution Center post is 9 N·m (80 in-lbs). Applying accurate torque ensures optimal electrical conductivity and prevents plastic housing cracking or thermal distortion caused by excessive resistance.
Step-by-Step Guide to Understanding the 2015 Dodge Dart Fuse Box Diagram
Identify – Turn off ignition, set parking brake, and disconnect negative battery cable.
Locate – Open engine bay PDC lid or remove driver-side interior lower instrument panel cover.
Reference – Match bad circuit symptom to diagram key slot number and corresponding fuse amperage.
Connect/Route – Pull suspected fuse straight out using tool; inspect wire filament for visible breaks.
Verify – Insert replacement fuse of identical amp rating into slot and re-check circuit continuity with multimeter.
Troubleshoot – Reconnect battery, clear any stored diagnostic code via OBD-II scanner, and confirm check engine light remains off.
