2015 Toyota Corolla Fuse Box Diagram & Amperage
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Quick answer
The 2015 Toyota Corolla features two main fuse box locations: one under the hood in the engine compartment and another inside the cabin, typically located in the driver's side kick panel area.
Under-Hood Fuse Box (Engine Compartment)
The under-hood fuse box on your 2015 Toyota Corolla is situated in the engine compartment, usually on the driver's side near the battery. This box contains fuses for critical engine components, headlights, and other high-current systems. Always refer to the diagram on the fuse box lid for the most accurate information for your specific vehicle trim.
Note: Relay locations are often integrated into the under-hood fuse box. Common relays include those for the starter, fuel pump, headlights, and cooling fan. Their exact position may vary, so consult your owner's manual or the diagram on the fuse box lid.
| Fuse # | Amp | Color | Circuit / Component Protected |
|---|---|---|---|
| EFI | 10A | Red | ECM/PCM, Fuel Pump Relay, Injectors |
| IGN | 15A | Blue | Ignition Coils, Igniter |
| STARTER | 20A | Yellow | Starter Relay, Starter Motor |
| H-LP LH | 10A | Red | Left Low Beam Headlight |
| H-LP RH | 10A | Red | Right Low Beam Headlight |
| H-LP HI | 15A | Blue | High Beam Headlights |
| TAIL | 10A | Red | Tail Lights, Parking Lights |
| STOP | 10A | Red | Brake Lights, ABS ECU |
| ABS NO.1 | 20A | Yellow | ABS Pump Motor |
| ABS NO.2 | 10A | Red | ABS Solenoid Valves |
| HEATER | 40A | Green | Blower Motor (Main Power) |
| A/C MGT | 10A | Red | A/C Compressor Clutch Relay |
| FAN NO.1 | 30A | Green | Radiator Cooling Fan |
| WIPER | 25A | Clear | Windshield Wipers |
| HORN | 10A | Red | Horn |
| AM2 | 15A | Blue | Main Power for ignition (some trims) |
| ALT | 100A | Yellow | Alternator (Main Fuse) |
Interior Fuse Box (Driver's Side Kick Panel)
The interior fuse box for your 2015 Toyota Corolla is located on the driver's side, typically behind a cover in the kick panel area, close to the dash. This fuse box primarily handles power for interior accessories, comfort features, and various electronic modules. Again, always check the fuse diagram on the cover or in your owner's manual for precise locations.
| Fuse # | Amp | Color | Circuit / Component Protected |
|---|---|---|---|
| ACC | 10A | Red | Accessory Power, Radio, USB Port |
| CIG | 15A | Blue | Cigarette Lighter, 12V Power Outlet |
| RADIO | 10A | Red | Radio/Infotainment System |
| DOME | 10A | Red | Interior Lights, Clock, Trunk Light |
| GAUGE | 10A | Red | Instrument Cluster, Warning Lights |
| PWR OUTLET | 15A | Blue | Auxiliary Power Outlets (some trims) |
| ECU-IG | 10A | Red | ECM/PCM (Ignition Switched Power) |
| METER | 10A | Red | Combination Meter, Diagnostic Connector |
| WIPER S | 5A | Tan | Wiper Switch |
| DOOR | 10A | Red | Power Door Locks, Window Switches |
| P/W | 20A | Yellow | Power Windows (Main Power) |
| SRS-IG | 10A | Red | Airbag System (Ignition Switched) |
| TVM | 7.5A | Brown | Theft Deterrent System |
| HTR SW | 10A | Red | Blower Motor Switch |
Note on Trailer Brake: The 2015 Toyota Corolla is not designed for heavy-duty towing. If equipped with an aftermarket trailer brake controller, it will typically have its own dedicated fusing and wiring run directly from the battery, not through the factory fuse boxes. Always follow the installation instructions for any aftermarket accessories.
How to Test a Fuse
Testing a fuse is a straightforward process:
- Safety First: Ensure the ignition is off and the vehicle is in park with the parking brake engaged.
- Locate the Fuse: Refer to your owner's manual or the diagrams on the fuse box covers to find the suspected fuse.
- Visual Inspection: Most automotive fuses have a small wire visible through a clear plastic body. If this wire is broken or melted, the fuse is blown and needs replacement.
- Use a Multimeter or Test Light: For a more accurate test, remove the fuse (using the plastic fuse puller usually found in the fuse box) and use a multimeter set to continuity mode. Touch the probes to the metal terminals on either end of the fuse. A good fuse will show continuity. Alternatively, a test light can be used by connecting its clip to a ground point and touching the probe to each metal test point on the top of the installed fuse. If one side lights up and the other doesn't, the fuse is blown. If neither lights up, there's no power to the circuit.
- Replace with Correct Amperage: Always replace a blown fuse with a new one of the exact same amperage (A) rating. Using a fuse with a higher amperage can lead to electrical system damage or fire.
Common Blown Fuses on This Vehicle
While any fuse can blow, some are more commonly encountered due to wear, electrical shorts, or high usage of the associated components. On a 2015 Toyota Corolla, here are a few to keep an eye on:
- CIG/PWR OUTLET (15A): Often blows due to overcurrent from charging multiple devices or using high-power accessories like air compressors or portable vacuums. If your phone charger or accessory outlet stops working, check this fuse first.
- RADIO (10A) / ACC (10A): Issues with your infotainment system, stereo, or accessory power might trace back to these fuses. A short in an aftermarket radio or damaged wiring can cause them to blow.
- STOP (10A): If your brake lights aren't working, this is the first place to look. A short in the brake light switch or wiring can cause it to blow. Note that ABS issues can sometimes also be linked to this fuse.
- HEATER (40A) / HTR SW (10A): Problems with your blower motor or fan speed settings could indicate an issue with these fuses. A failing blower motor can draw too much current, blowing the main HEATER fuse.
When a fuse blows, it's essential not just to replace it but to try and understand why it blew. If a fuse repeatedly blows, it indicates an underlying electrical problem that needs professional diagnosis, such as a short circuit, an overloaded component, or a faulty relay.
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Before you pull a fuse on the 2015 Toyota Corolla
- Use the label printed on the panel cover or the owner's manual for your exact build. Layouts change with options, model year and build date, so a chart for another truck can be wrong.
- Replace a blown fuse only with the same amp rating. A larger fuse can let wiring overheat.
- A fuse that blows again right away means a short or failing component downstream. Find the cause before replacing it again.
- A good fuse doesn't prove the circuit works — relays, grounds and connectors fail too.
- Disconnect the battery before working near high-current fuses or cables.
Learn more: How fuses, relays and truck electrical systems work
More specs for the 2015 Toyota Corolla
Oil Capacity & Filter
Capacity, weight, filter PN, drain plug torque, change interval.
Fluid Type Specs
Engine oil, coolant, ATF, diff, brake, PS, DEF — with OEM spec numbers.
Coolant Capacity & Type
Total system capacity, OEM coolant spec, flush interval, bleed tips.
Transmission Fluid & Service
Trans model, fluid spec, capacity, filter PN, service interval.
Torque Specifications
Lug nuts, drain plug, caliper, axle nut, plug, key fasteners.
Brake Pad & Rotor Specs
Pad PNs, rotor size, min thickness, caliper torque.
Tire Size & Pressure
OEM size, cold psi, bolt pattern, wheel size, TPMS.
Battery Size & Group
Group size, CCA, AGM/flooded, dimensions, reset note.
A/C Refrigerant & Oil
R-134a or R-1234yf, charge oz, PAG oil spec.
Bulb Sizes (Headlight, Tail, Fog)
Headlight, fog, tail, turn, reverse, interior.
Factory Maintenance Schedule
Service intervals by mileage, severe-duty notes, known issues.
Towing Capacity & Payload
Max tow, payload, GVWR/GCWR, hitch class by trim.
Serpentine Belt Routing & Length
Belt routing, length, rib count, OEM + aftermarket PNs.
Wheel Alignment Specifications
Camber, caster, toe ranges (front & rear), adjustability notes.
Paint Color Codes
All factory colors with paint codes, sticker location, touch-up tips.
Wiper Blade Sizes
Driver/passenger/rear blade size, attachment, OEM + cross-refs.
Spark Plug Type & Gap
Plug PN, gap, torque, interval by engine.
Transmission & Axle Gear Ratios
Trans gear ratios, axle ratios, RPO codes, tow vs MPG impact.
Key Fob Programming
DIY programming steps, FCC ID, fob PN, battery, transponder.
Same spec — other model years
Maintenance & repair guides
2015 Toyota Corolla Maintenance Schedule →
Available maintenance guidance; confirm the manufacturer schedule.
Repair planning references →
Plan the scope of work; detailed procedures need configuration-matched evidence.
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