2010 Toyota Tundra II Fuse Box Diagram
The 2010 Toyota Tundra (II) has 2 fuse boxes. Choose the one you’re looking at.
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Engine compartment fuse box
On the driver's side of the engine compartment next to the battery, under a lid: push the tab in and lift the lid off. Only the small blade fuses (type A) come out with the pull-out tool clipped inside; the cartridge fuses are dealer items in Toyota's manual. Numbered 1-46 as the 2010 manual plate numbers them (POWER NO.4 became position 7, shifting the later numbers by one against 2009). Layout as the plate draws it: four blade fuses along the top, the three spares at the top right, two blocks of blade fuses in the middle and right, the DEFOG/SUB BATT cartridges in the second row, ABS1/ABS2/ST beside the middle block, and the fusible-link block (HTR, LH-J/B, ALT, the two A/PUMP and MAIN) at the lower left. Relay housings are drawn where the plate draws them, without names (Toyota prints none for this box).
| No. | Function | Amp | Description |
|---|---|---|---|
| 1 | 15 AMINI | A/F: air-fuel ratio sensor heaters (fuel injection system) | |
| 2 | 10 AMINI | HORN: horn | |
| 3 | 25 AMINI | EFI NO.1: engine fuel injection system, main supply | |
| 4 | 30 AMINI | IG2 MAIN: feeds the INJ, MET and IGN fuses | |
| 5 | 20 AMINI | DEICER: front windshield wiper de-icer | |
| 6 | 30 AMINI | TOW TAIL: trailer tail lights | |
| 7 | 25 AMINI | POWER NO.4: power windows | |
| 8 | 30 AMINI | POWER NO.2: power back window (rear sliding window) | |
| 9 | 15 AMINI | FOG: front fog lights | |
| 10 | 15 AMINI | STOP: stop lights and high-mounted stop light; also feeds VSC, ABS, the shift lock, the fuel injection system and the towing converter | |
| 11 | 30 AMINI | TOW BRK: trailer brake controller | |
| 12 | 7.5 AMINI | IMB: fuel injection system (engine immobilizer feed) | |
| 13 | 7.5 AMINI | AM2: starting system (ignition switch AM2 feed) | |
| 14 | 30 AMINI | TOWING: towing converter (trailer wiring) | |
| 15 | 5 AMINI | ALT-S: charging system (alternator sense) | |
| 16 | 15 AMINI | TURN-HAZ: turn signal lights, hazard flashers, towing converter | |
| 17 | 15 AMINI | F/PMP: 15 A fuse fitted, no circuit assigned on this model year (Toyota table) | |
| 18 | 10 AMINI | ETCS: electronic throttle control system, fuel injection system | |
| 19 | 5 AMINI | MET-B: gauges and meters (battery feed) | |
| 20 | 30 AMINI | AMP: audio amplifier - audio system, rear view monitor, navigation, rear seat entertainment | |
| 21 | 15 AMINI | RAD NO.1: audio system, rear view monitor, navigation, rear seat entertainment | |
| 22 | 7.5 AMINI | ECU-B1: battery feed for the multiplex (body) network, fuel injection system, auto-dimming mirror, power outlets, driver power seat, tilt and telescopic steering | |
| 23 | 7.5 AMINI | DOME: interior, personal and vanity lights, engine switch light, foot and door courtesy lights, accessory meter | |
| 24 | 15 AMINI | HEAD LH: left headlight high beam | |
| 25 | 15 AMINI | HEAD LL: left headlight low beam | |
| 26 | 10 AMINI | INJ: fuel injection and ignition system | |
| 27 | 7.5 AMINI | MET: gauges and meters | |
| 28 | 10 AMINI | IGN: SRS airbag system, fuel injection system, cruise control | |
| 29 | 15 AMINI | HEAD RH: right headlight high beam | |
| 30 | 15 AMINI | HEAD RL: right headlight low beam | |
| 31 | 10 AMINI | EFI NO.2: fuel injection system, evaporative leak detection pump | |
| 32 | 5 AMINI | DEF I/UP: 5 A fuse fitted, no circuit assigned (Toyota table) | |
| 33 | 5 AMINI | SPARE: spare 5 A fuse | |
| 34 | 15 AMINI | SPARE: spare 15 A fuse | |
| 35 | 30 AMINI | SPARE: spare 30 A fuse | |
| 36 | 40 AJCASE | DEFOG: rear window defogger | |
| 37 | 40 AJCASE | SUB BATT: trailer towing (trailer battery charge feed) | |
| 38 | 50 AJCASE | ABS1: anti-lock brakes and vehicle stability control | |
| 39 | 40 AJCASE | ABS2: anti-lock brakes and vehicle stability control | |
| 40 | 30 AJCASE | ST: starting system | |
| 41 | 50 AJCASE | HTR: air conditioning blower | |
| 42 | 150 AJCASE | LH-J/B: main feed of the instrument panel fuse box (AM1, TAIL, PANEL, ACC, CIG, LH-IG, 4WD, ECU-IG, BK/UP LP, SEAT-HTR, A/C, WSH, WIPER, OBD, seat, mirror, door lock, cargo lamp, outlet and POWER No.1 fuses) | |
| 43 | 140 AJCASE | ALT: alternator output - 180 A with the 5.7 V8 and towing package, 140 A otherwise; feeds LH-J/B, HTR, SUB BATT, TOW BRK, STOP, FOG, TOW TAIL and DEICER. Replace only with the same rating | |
| 44 | 50 AJCASE | A/PUMP NO.1: secondary air injection pump 1 (fuel injection system) | |
| 45 | 50 AJCASE | A/PUMP NO.2: secondary air injection pump 2 (fuel injection system) | |
| 46 | 40 AJCASE | MAIN: feeds the HEAD LL, HEAD RL, HEAD LH and HEAD RH fuses |
Instrument panel fuse box
Under the instrument panel on the driver's side: lie in the footwell and look up; remove the lid to reach the fuses. Numbered 1-28 as the 2010 manual plate numbers them (POWER No.3 and TOW BK/UP populate two sockets that were empty in 2009). Two rows of blade fuses with the POWER No.1 cartridge in the upper row; both rows read left to right.
| No. | Function | Amp | Description |
|---|---|---|---|
| 1 | 15 AATO | 115 V AC power outlet (inverter) | |
| 2 | 30 AATO | FR P/SEAT LH: driver's power seat | |
| 3 | 25 AATO | DR/LCK: door locks (multiplex body network) | |
| 4 | 7.5 AATO | OBD: on-board diagnostics connector | |
| 5 | 15 AATO | PWR OUTLET: 12 V power outlets | |
| 6 | 7.5 AATO | CARGO LP: cargo bed lamp | |
| 7 | 7.5 AATO | AM1: shift lock system, starting system | |
| 8 | 7.5 AATO | A/C: air conditioning system | |
| 9 | 15 AATO | MIR: outside mirror control and mirror heaters | |
| 10 | 20 AATO | POWER No.3: power windows | |
| 11 | 30 AATO | FR P/SEAT RH: front passenger power seat | |
| 12 | 15 AATO | TI&TE: power tilt and telescopic steering column | |
| 13 | 25 AATO | S/ROOF: electric moon roof | |
| 14 | 7.5 AATO | ECU-IG No.1: ignition feed for ABS/VSC, body network, parking assist, driver seat, tilt/telescopic column, shift lock, tire pressure warning, accessory meter, trailer towing, power outlet, moon roof | |
| 15 | 7.5 AATO | LH-IG: back-up lights, charging system, gauges, turn signals, air conditioning, seat heaters, rear defogger | |
| 16 | 20 AATO | 4WD: four-wheel drive control system | |
| 17 | 20 AATO | WSH: windshield washer | |
| 18 | 30 AATO | WIPER: windshield wipers and washer | |
| 19 | 7.5 AATO | ECU-IG No.2: multiplex (body) communication system | |
| 20 | 15 AATO | TAIL: tail lights, parking lights, trailer tail lights, outer foot lights | |
| 21 | 10 AATO | A/C IG: air conditioning system (ignition feed) | |
| 22 | 7.5 AATO | TOW BK/UP: trailer back-up lights | |
| 23 | 20 AATO | SEAT-HTR: seat heaters, or heated and ventilated seats | |
| 24 | 7.5 AATO | PANEL: illumination of the instrument panel, glove box, ashtray, accessory meter, audio, navigation, rear seat entertainment, gauges and A/C controls | |
| 25 | 7.5 AATO | ACC: accessory feed for the accessory meter, audio, rear seat entertainment, rear view monitor, navigation, back-up lights, trailer back-up lights, body network, power outlet and outside mirrors | |
| 26 | 10 AATO | BK/UP LP: back-up lights, gauges and meters | |
| 27 | 15 AATO | CIG: cigarette lighter | |
| 28 | 30 AJCASE | POWER No.1: power windows and power back window |