Toyota 4Runner (2003) – fuse box diagram
Year of production: 2003
Engine compartment
Instrument panel
Fuse (type A)
| Fuse | Ampere rating [A] | Functions | |
| 1 | SPARE | 10 | Spare fuse |
| 2 | SPARE | 15 | Spare fuse |
| 3 | STOP | 10 | Stop/tail lights, high mounted stoplight, shift lock control system, anti–lock brake system, traction control system (two–wheel drive models), active traction control system (four–wheel drive models), vehicle skid control system, rear height control air suspension, multiport fuel injection system/sequential multiport fuel injection system, trailer brake controller, trailer lights (tail lights) |
| 4 | AC115V INV | 15 | AC inverter |
| 5 | FR FOG | 15 | Front fog lights |
| 6 | OBD | 7,5 | On- board diagnosis system |
| 7 | HEAD (LO RH) | 10 | Right–hand headlight (low beam) |
| 8 | HEAD (LO LH) | 10 | Left–hand headlight (low beam) |
| 9 | HEAD (HI RH) | 10 | Right–hand headlight (high beam) |
| 10 | HEAD (HI LH) | 10 | Left–hand headlight (high beam) |
| 11 | EFI NO.2 | 10 | Multiport fuel injection system/sequential multiport fuel injection system |
| 12 | HEATER NO.2 | 7,5 | Air conditioning system |
| 13 | AIRSUS NO.2 | 10 | Rear height control air suspension |
| 14 | SEAT HEATER | 25 | Seat heaters |
| 15 | DEFOG | 30 | Rear window defogger, multiport fuel injection system/sequential multiport fuel injection system |
| 16 | MIR HTR | 10 | Outside rear view mirror heater |
| 17 | DOME | 10 | Interior light, personal lights, wireless remote control system, door courtesy lights, rear seat audio system, gauge and meter, vanity lights, instrument panel lights, running board lights, multiplex communication system |
| 18 | RADIO NO.1 | 20 | Audio system, navigation system |
| 19 | ECU–B | 10 | Anti–lock brake system, navigation system, traction control system (two–wheel drive models), active traction control system (four–wheel drive models), vehicle skid control system, air conditioning system, multiplex communication system, theft deterrent system |
| 20 | ALT-S | 7,5 | Charging system |
| 21 | HORN | 10 | Horns |
| 22 | A/F HEATER | 15 | No circuit |
| 23 | TRN–HAZ | 15 | Turn signal lights, emergency flashers |
| 24 | ETCS | 10 | Multiport fuel injection system/sequential multiport fuel injection system |
| 25 | EFI | 25 | Multiport fuel injection system/sequential multiport fuel injection system |
| 26 | DR/LCK | 20 | Power door lock system |
| 27 | TOWING | 30 | Towing converter |
| 28 | RADIO NO.2 | 20 | Audio system |
| 29 | IGN | 10 | Multiport fuel injection system/sequential multiport fuel injection system, anti–lock brake system, traction control system (two–wheel drive models), active traction control system (four–wheel drive models), vehicle skid control system, stop light, meter and gauge |
| 30 | SRS | 10 | SRS airbag system |
| 31 | GAUGE | 7,5 | Meter and gauge |
| 32 | STA NO.2 | 7,5 | Multiport fuel injection system/sequential multiport fuel injection system |
| 33 | FR WIP–WSH | 30 | Windshield wipers and washer |
| 34 | 4WD | 20 | Four–wheel drive control system |
| 35 | D P/SEAT | 30 | Driver’s power seat |
| 36 | P P/SEAT | 30 | Front passenger’s power seat |
| 37 | PWR OUTLET | 15 | Power outlets |
| 38 | RR WSH | 15 | Rear window washer, multiplex communication system |
| 39 | ECU–IG | 10 | Shift lock control system, power windows, anti–lock brake system, traction control system (two–wheel drive models), active traction control system (four–wheel drive models), vehicle skid control system, electric moon roof, multiplex communication system, theft deterrent system, rear height control air suspension |
| 40 | IG1 | 10 | Anti–lock brake system, traction control system (two–wheel drive models), active traction control system (four–wheel drive models), vehicle skid control system, air conditioning system, charging system, rear window defogger, back–up lights, turn signal lights, emergency flashers, seat heaters, AC inverter, instrument panel light control, auto anti–glare inside rear view mirror, SRS airbag system |
| 41 | STA | 7,5 | No circuit |
| 42 | SECU/HORN | 10 | Theft deterrent system |
| 43 | TAIL | 10 | Tail lights, license plate lights, parking lights, instrument panel light control, multiport fuel injection system/sequential multiport fuel injection system, instrument panel lights, meter and gauge, grove box light |
| 44 | ACC | 7,5 | Power outlets, outside rear view mirrors, audio system, navigation system, rear seat audio system, shift lock control system, instrument panel lights |
| 45 | CIG | 10 | No circuit |
Fuses (type B)
| Fuse | Ampere rating [A] | Functions | |
| 46 | HEATER | 50 | Air conditioning system, all components in ”A.C” fuse |
| 47 | AIRSUS | 50 | Rear height control air suspension |
| 48 | AM1 | 50 | All components in “ACC”, “CIG”, “IG1”, “ECU–IG”, “FR WIP–WSH”, “RR WIP”, “RR–WSH”, “4WD”, and “STA” fuses |
| 49 | TOWING BRK | 30 | Trailer brake controller |
| 50 | J/B | 50 | All components in “PWR OUTRET”, “D P/SEAT RH”, “P P/ SEAT”, “POWER”, “TAIL” and “SECU/ HORN” fuses |
| 51 | BATT CHG | 30 | Trailer sub battery |
| 52 | TOWING | 40 | Trailer lights (tail lights) |
| 53 | ABS MTR | 40 | Anti–lock brake system, traction control system (two–wheel drive models), active traction control system (four–wheel drive models), vehicle skid control system |
| 54 | AM2 | 30 | Starter system, “IGN”, “GAUGE”, “STA NO.2” and “SRS” fuses |
| 55 | ABS SOL | 50 | Anti–lock brake system, traction control system (two–wheel drive models), active traction control system (four–wheel drive models), vehicle skid control system |
| 56 | POWER | 30 | Power windows, electric moon roof |
Fuses (type C)
| Fuse | Ampere rating [A] | Functions | |
| 57 | ALT | 140 | All components in “AM2”, “ALT–S”, “DR/LCK”, “TRN–HAZ”, “HORN”, “RADIO NO.2”, “EFI”, “TOWING”, “ABS MTR”, “ABS SOL” and “ETCS” fuses |
WARNING: Terminal and harness assignments for individual connectors will vary depending on vehicle equipment level, model, and market.
