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2018 Toyota Tundra II Fuse Box Diagram

The 2018 Toyota Tundra (II) has 2 fuse boxes. Choose the one you’re looking at.

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Engine compartment fuse box

Toyota Safety Sense-P and LED headlights arrive for 2018 and bring a new engine-box assignment on cover sticker 82661-0C320: IG1 NO.3, NO.4 and NO.5, GATEWAY, ECU-DCC, JB-B, the LED headlight fuses, and TI&TE and 4WD moved in from the cab. With no table in the manual, the numbers used here are the index the fuse databases apply to this cover - 1 to 72 over every socket, empty ones included, with the three spares as 75 to 77. The box is still on the driver's side beside the battery under a tab-release lid. Its cover draws four blades at the top, a long blade row across the middle, a cartridge row beneath, the ALT link and the five-element block at the lower left, and the headlight fuses at the lower right; these relay housings do carry the cover's names.

SparesNoise filtersTOW TAILSTF/PMPFPCV VSVVSC ACCH-LP LOC/OPNIG1 NO.4FOG FRTOW BKUPBATT CHGDIMMERDRLMG CLTIG1 NO.3DEICERDEFAI-HTRIG1 NO.515151511010102252525330303042525255630303071515158202020930303010303030111213151515141515151516177.57.57.518192040404021303030224040402340404024404040257.57.57.52615151527282918018018030313250505033341501501503550505036505050374040403839403030304150505042555434420202045303030467.57.57.54748495025252551101010525555310101054303030553030305640404057582020205930303060101010611010106210101063101010646566101010671010106810101069555707172555751515157630303077
No.FunctionAmpDescription
115 AMINIA/F: air-fuel ratio sensor heaters (fuel injection system)
210 AMINIHORN: horn
325 AMINIEFI NO.1: engine fuel injection system, main supply
430 AMINIIG2 MAIN: ignition-switched IG2 main feed (feeds the INJ, MET and IGN fuses on the earlier editions)
525 AMINIIG1 NO.5: ignition-switched IG1 feed, circuit 5 (name from the cover; Toyota publishes no circuit list)
6Not used
730 AMINIPOWER NO.2: power back window (rear sliding window)
815 AMINITI&TE: power tilt and telescopic steering column
920 AMINIDEICER: front windshield wiper de-icer
1030 AMINI4WD: four-wheel drive control system
1130 AMINITOW TAIL: trailer tail lights
12Not used
13Not used
1415 AMINIMIR HTR: outside mirror heaters
15Not used
1615 AMINIFOG FR: front fog lights
17Not used
187.5 AMINICARGO LP: cargo bed lamp
19Not used
20Not used
2140 AJCASEDEFOG: rear window defogger
2230 AJCASETOW BRK: trailer brake controller
2340 AJCASESUB BATT: trailer towing (trailer battery charge feed)
2440 AJCASEIG1 NO.4: ignition-switched IG1 feed, circuit 4 (name from the cover; Toyota publishes no circuit list)
2540 AJCASEIG1 NO.3: ignition-switched IG1 feed, circuit 3 (name from the cover; Toyota publishes no circuit list)
267.5 AMINILED DRL: LED daytime running lights
2715 AMINIP/OUTLET NO.1: 12 V power outlet No.1
28Not used
29Not used
30180 AJCASEALT: alternator output; feeds the fusible-link block. Replace only with the same rating
31Not used
32Not used
3350 AJCASEHTR: air conditioning blower
34Not used
35150 AJCASELH-J/B: main feed of the instrument panel fuse box
3650 AJCASEA/PUMP NO.1: secondary air injection pump 1
3750 AJCASEA/PUMP NO.2: secondary air injection pump 2
3840 AJCASEMAIN: headlight main feed (HEAD/LED LL, RL, LH, RH fuses)
39Not used
40Not used
4130 AJCASEABS2: anti-lock brakes and vehicle stability control
4250 AJCASEABS1: anti-lock brakes and vehicle stability control
435 AMINIGATEWAY: central gateway ECU (CAN network gateway)
44SHORT PIN: a jumper (short pin), not a fuse - do not fit a fuse here
4520 AMINIECU-DCC: battery (DCC) feed to control units (name from the cover; Toyota publishes no circuit list)
4630 AMINIAMP: audio amplifier
477.5 AMINITOW BKUP: trailer back-up lights
48Not used
49Not used
50Not used
5125 AMINIF/PMP: fuel pump
5210 AMINIETCS: electronic throttle control system
535 AMINIALT-S: charging system (alternator sense)
5410 AMINIAI-HTR: secondary air injection system
5530 AMINITOWING: towing converter (trailer wiring)
5630 AJCASEST: starting system
5740 AJCASEJB-B: battery feed to the junction box
58Not used
5920 AMINIWASHER: windshield washer
6030 AMINIWIPER: windshield wipers
6110 AMINILED LH: left LED headlight high beam (10 A); printed HEAD LH 15 A on trucks with halogen headlights
6210 AMINILED RH: right LED headlight high beam (10 A); printed HEAD RH 15 A on trucks with halogen headlights
6310 AMINIINJ: fuel injection and ignition system
6410 AMINIIGN: ignition-switched feed for the SRS airbag system, fuel injection and cruise control
65Not used
66Not used
6710 AMINILED LL: left LED headlight low beam (10 A); printed HEAD LL 15 A on trucks with halogen headlights
6810 AMINILED RL: right LED headlight low beam (10 A); printed HEAD RL 15 A on trucks with halogen headlights
6910 AMINIEFI NO.2: fuel injection system, evaporative leak detection pump
705 AMINIIDLE/UP: idle-up control (printed IDLE/LP by fuse-box.info)
71Not used
72Not used
755 AMINISPARE: spare 5 A fuse
7615 AMINISPARE: spare 15 A fuse
7730 AMINISPARE: spare 30 A fuse

Instrument panel fuse box

A new cab carrier for 2018: a long narrow two-column strip behind cover sticker 82672-0C100, reached by lying in the driver's footwell and pulling the cover off. Thirty-six sockets, numbered as the fuse databases index the cover, 1 to 18 down its left column and 19 to 36 down its right. The diagram lays the box on its side, so what the cover shows as the left column is the upper row here and its right column is the lower row, both read from the cover's top end. AM2 is 5 A on the covers photographed for this model year.

17.57.57.5210101034555555565557151515820202097.57.57.51011125551310101014151515151655517555185551955520252525211010102255523151515245552510101026202020272020202815151529555303132101010337.57.57.5345553555536
No.FunctionAmpDescription
1Not used
27.5 AMINIOBD: on-board diagnostics connector
310 AMINIDOME: interior (dome) lights
4Not used
55 AMINIAM1: starting system (ignition switch AM1 feed)
65 AMINIECU-DCC NO.2: battery feed to control units, circuit 2 (name from the cover; Toyota publishes no circuit list)
75 AMINIECU-DCC NO.1: battery feed to control units, circuit 1 (name from the cover; Toyota publishes no circuit list)
815 AMINIRADIO: audio system
920 AMINIDOOR: front door locks and windows (door control)
107.5 AMINIS-HORN: security horn (anti-theft alarm siren)
11Not used
12Not used
135 AMINIECU-ACC: accessory feed to control units
1410 AMINIECU-IG1 NO.3: ignition-switched feed to control units, circuit 3
15Not used
1615 AMINIA/BAG-IG2: SRS airbag system
175 AMINIMETER-IG2: instrument cluster (gauges and meters)
185 AMINIECU-IG2 NO.3: ignition-switched (IG2) feed to control units, circuit 3
195 AMINIECU-B NO.2: battery feed to control units, circuit 2
205 AMINIECU-B NO.1: battery feed to control units, circuit 1
2125 AMINID/L: door lock motors
2210 AMINISTOP: stop lights
235 AMINIAM2: starting system (ignition switch AM2 feed); 7.5 A from August 2019 production
2415 AMINIHAZ: turn signal and hazard flashers
255 AMINIPANEL: instrument panel illumination
2610 AMINITAIL: tail and parking lights
2720 AMINIDOOR R/L: rear left door (lock and window)
2820 AMINIDOOR R/R: rear right door (lock and window)
2915 AMINIP/OUTLET NO.2: 12 V power outlet No.2
305 AMINISFT LOCK-ACC: shift lock control (accessory feed)
31Not used
32Not used
3310 AMINIECU-IG1 NO.4: ignition-switched feed to control units, circuit 4
347.5 AMINIBKUP LP: back-up lights
355 AMINIECU-IG1 NO.2: ignition-switched feed to control units, circuit 2
365 AMINIECU-IG1 NO.1: ignition-switched feed to control units, circuit 1