Where are the Fuse Boxes located in the 2003 Toyota Tacoma?
2003 Toyota Tacoma has 2 main boxes with fuses and relays. One in the cabin (Passenger Compartment), another under the hood (Engine Compartment).
2003 Toyota Tacoma Under Dash Fuse Box and Relay Location
The Fuse and Relay box is located under the dashboard, on the passenger side, below the glove box, and is covered with trim.
The instrument panel fuse block access door is located on the driver-side edge of the instrument panel.
2003 Toyota Tacoma Under Hood Fuse and Relay box location
The engine compartment fuse block is in the engine compartment is located on the driver side of vehicle.
2003 Toyota Tacoma under Dash Fuse Box Layout
2003 Toyota Tacoma under Dash Fuse and relay Box Diagram
2003 Toyota Tacoma under Dash Fuse and relay Box Details
Assignment of the fuses in the Passenger Compartment
| No. | Name | Amp(A) | Designation |
|---|---|---|---|
| 1 | – | – | Not used |
| 2 | ACC | 15 | Cigarette lighter, clock, power rearview mirrors, back-up lights, automatic transmission shift lock system, SRS airbag system, seat belt pretensioners, car audio system |
| 3 | ECU-IG | 15 | Cruise control system, anti-lock brake system, automatic transmission shift lock system, SRS airbag system |
| 4 | GAUGE | 10 | Day time running light system, back-up lights, cruise control system, rear differential lock system, electronically controlled automatic transmission system, starting system, charging system, air conditioning system |
| 5 | ECU-B | 7.5 | SRS warning light, air conditioning system |
| 6 | TURN | 10 | Turn signal lights, emergency flashers |
| 7 | IGN | 7.5 | Gauges and meters, SRS airbag system, seat belt pretensioners, multiport fuel injection system/sequential multiport fuel injection system |
| 8 | HORN.HAZ | 15 | Emergency flashers, horns |
| 9 | WIPER | 20 | Windshield wipers and washer |
| 10 | – | – | Not used |
| 11 | STA | 7.5 | Clutch start cancel system, starting system |
| 12 | 4WD | 20 | A.D.D. control system, four-wheel drive control system, rear differential lock system |
| 13 | – | – | Not used |
| 14 | STOP | 10 | Stop lights, high mounted stoplight, cruise control system, anti-lock brake system, multiport fuel injection system/sequential multiport fuel injection system |
| 15 | POWER | 30 | Power windows, power seat |
| No. | Protected Components |
|---|---|
| R1 | Flasher |
| R2 | Power relay (power windows, power seat) |
2003 Toyota Tacoma Under Hood Fuse Box Layout
2003 Toyota Tacoma under Hood Fuse and relay Box Diagram
2003 Toyota Tacoma under hood Fuse Box Details
Assignment of the fuses and relay in the Engine Compartment
| No. | Name | Amp(A) | Designation |
|---|---|---|---|
| 1 | DRL | 7.5 | Daytime running light system |
| 2 | HEAD (RH) | 10 | Right-hand headlight |
| 2 | HEAD (HI RH) | 10 | with DRL: Right-hand headlight (high beam), high beam indicator light |
| 3 | HEAD (LH) | 10 | Left-hand headlight |
| 3 | HEAD (HI LH) | 10 | with DRL: Left-hand headlight (high beam) |
| 4 | HEAD (LO RH) | 10 | with DRL: Right-hand headlight (low beam) |
| 5 | HEAD (LO LH) | 10 | with DRL: Left-hand headlight (low beam) |
| 6 | TAIL | 10 | Tail lights, licence plate lights |
| 7 | – | – | Not used |
| 8 | A.C | 10 | Air conditioning system |
| 9 | – | – | Not used |
| 10 | – | – | Not used |
| 11 | – | – | Not used |
| 12 | – | – | Not used |
| 13 | – | – | Not used |
| 14 | ECTS | 15 | Multiport fuel injection system/sequential multiport fuel injection system |
| 14 | FOG | 15 | Fog light |
| 15 | DOME | 15 | Car audio system, interior light, clock, personal lights, door courtesy light, day time running light system, gauges and meters |
| 16 | OBD | 7.5 | On-board diagnosis system |
| 17 | EFI | 20 | Multiport fuel injection system/sequential multiport fuel injection system |
| 18 | ALT-S | 7.5 | Charging system |
| 19 | PWR OUTLET | 15 | Power outlet |
| 20 | – | – | Not used |
| 21 | – | – | Not used |
| 22 | ABS | 60 | Anti-lock brake system, traction control system, “AUTO LSD” system, vehicle stability control system |
| 23 | ALT | 120 | All components in “CAM1”, “HEATER”, “A.C”, “TAIL”, “ALT-S” and “PWR OUTLET” fuses |
| 24 | HEATER | 50 | All components in “A.C” fuse |
| 25 | AM1 | 40 | Starting system |
| 26 | J/B | 50 | All components in “POWER”, “HORN-HAZ”, “STOP” and “ECU-B” fuses |
| 27 | AM2 | 30 | Ignition system, multiport fuel injection system/sequential fuel injection system |
| 28 | ABS2 | 30 | without vehicle stability control system: Anti – lock brake system, traction control system, “AUTO LSD” system, vehicle stability control system |
| 28 | ABS2 | 50 | with vehicle stability control system: Anti-lock brake system, traction control system, “AUTO LSD” system, vehicle stability control system |
| Relay | |||
| R1 | Starter | ||
| R2 | Heater | ||
| R3 | Not used | ||
| R4 | Taillights | ||
| R5 | Not used | ||
| R6 | Power outlet | ||
| R7 | EFI relay | ||
| R8 | Headlight | ||
| R9 | Dimmer |
WARNING: The terminal and harness assignments for individual connectors may vary depending on the vehicle’s equipment level, model, and market. It is recommended to refer to the fuse box diagram provided at the back of the fuse box cover for accurate information.
