Toyota Tundra 2nd generation was produced in 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020. During this time, the model was restyled 2 times. In our material you will find information on the location of electronic control units, a description of fuses and relays Toyota Tundra with block diagrams and photo examples of execution. Note the cigarette lighter fuse. This material is also suitable for Toyota Sequoia owners, since these cars are built on a common base and have similar circuits.

Check the purpose of the elements with your diagrams on the block cover.

Blocks in the cabin

Location

General layout of blocks

  1. Distribution block (CAN LH No. 2)
  2. Distribution block (CAN LH No. 1)
  3. Steering column tilt and height adjustment control unit
  4. Direction indicator control unit
  5. Distance control system control unit
  6. Fuse box
  7. Body electrical equipment control unit
  8. Distribution block No. 5
  9. Power Steering Control Unit
  10. Distribution block No. 4
  11. Reverse lamp relay
  12. Key transponder amplifier
  13. Key transponder control unit
  14. Air conditioner booster
  15. All-wheel drive control unit
  16. Ground clearance control unit
  17. Power Supply Control Unit
  18. Distribution block No. 3
  19. Distribution block No. 6
  20. Auxiliary relay
  21. Distribution block (CAN RH)
  22. Tire pressure monitoring system control unit
  23. Audio amplifier
  24. Gearbox selector lock block
  25. Distribution block No. 7
  26. Central airbag unit

Fuse box

In the passenger compartment, the main fuse box is located under the instrument panel.

INVERTER15A Inverter
FR P/SEAT LH30A Driver’s seat with electric adjustment
DR/LCK25A Body Electrical Control Unit
POWER No.530A Electric tailgate drive
OBD7.5A Diagnostic connector
PWR OUTLET15A Socket
––
AM17.5A Gear selector lock, starting system, heated seats
A/C7.5A Air Conditioner
MIR15A Mirror control unit, mirror heating
POWER No.320A Glass lifts
FR P/SEAT RH30A Power Passenger Seat
TI&TE15A Tilt and height adjustment system for the steering column
S/ROOF25A Hatch
RR SEAT-HTR RH10A Seat heating
ECU-IG No.17.5A ABS, VSC, Body Control Module, Parking Assist, Power Driver Seat, Tilt and Height Adjustable Steering, Shift Lock, Tire Pressure Monitoring System, Trailer Socket, Power Outlet, Sunroof, Power Tailgate, Headlamp Washer, Blind Spot Monitor, Additional Display
AIR SUS IG20A Air suspension
LH-IG7.5A Reversing lights, charging system, instrument cluster, direction indicators, air conditioning, heated seats, heated rear window
4WD20A All wheel drive
RR SEAT-HTR LH10A Seat heating
WSH20A Windscreen Washer
WIPER30A Windscreen Wiper and Washer
ECU-IG No.27.5A Body Electrical Control Unit, Power Steering, Network Gateway Unit
TAIL15A Side light, trailer side light
A/C IG10A Air Conditioner
––
SEAT-HTR20A Seat ventilation and heating
PANEL7.5A Instrument cluster lighting, glove compartment lighting, ashtray lighting, additional display, audio system, rear view monitor, navigation, rear seat entertainment system, instrument cluster, air conditioning, ventilated and heated seats, blind spot monitor
ACC7.5A Additional display, audio system, rear seat entertainment system, rear view monitor, navigation, reversing lights, reversing lights (trailer), power outlet, electric mirrors, body electrical control unit
BK/UP LP10A Reversing lights, instrument cluster
CIG15A Cigarette Lighter
POWER No.130A Glass lifters, glass lifter tailgate

The operation of the cigarette lighter is controlled by the CIG and PWR OUTLET 15A fuses.

Blocks under the hood

Location

General layout of blocks

  1. ABS control unit
  2. Fuse box
  3. Headlight washer relay
  4. Engine control unit

Fuse and relay box

Under the hood, the fuse and relay box is located next to the battery and is covered with a protective cover.

115A A/F – Multi-port fuel injection system/sequential multi-port fuel injection system
210A HORN – Horn
325A EFI NO.1 – Multiport fuel injection system/sequential multiport fuel injection system
430A IG2 MAIN – Fuses: “INJ”, “MET”, “IGN”
530A L2 RR2 SEAT – Electric seats 3rd row
630A L1 RR2 SEAT – Electric seats 3rd row
725A CDS FAN – Cooling system fan
820A DEICER – Wiper Zone Heating
930A TOW TAIL – Trailer Marker Light
1025A CDS FAN NO.2 – 2012-2017: Cooling system fan
1130A R2 RR2 SEAT – Electric seats 3rd row
1230A R1 RR2 SEAT – Electric seats 3rd row
1325A POWER NO.4 – Window lifters
1415A FOG – Front fog light
1515A STOP – Brake lights, additional brake light, VSC, ABS, gear selector lock, multiport fuel injection system/sequential multiport fuel injection system, trailer electrical system
1630A TOW BRK – Trailer Brake Control
177.5A IMB – Immobilizer
187.5A AM2 – Starting System
19–
20–
21–
22–
2330A TOWING – Trailer electrical equipment
2410A AI-HTR – 2012-2017: Secondary Air Pump Heater
255A ALT-S – Charging System
2615A TURN-HAZ – Direction indicators, hazard warning lights, trailer electrical equipment
2715A F/PMP – 2007-2011: Fuel Pump
25A F/PMP – 2012-2017: Fuel Pump
2810A ETCS – Multi-port fuel injection system/sequential multi-port fuel injection system, throttle control system
295A MET-B – Instrument cluster
30–
3130A AMP – Audio system, rear seat entertainment system, rear view monitor, navigation
3215A RAD NO.1 – Audio system, rear seat entertainment system, rear view monitor, navigation
337.5A ECU-B1 – Body electrical control unit, multiport fuel injection system/sequential multiport fuel injection system, interior rearview mirror, power outlets, power driver’s seat, power tailgate, tilt and height steering column adjustment system, network gateway unit
347.5A DOME – Interior lighting, personal lighting, footwell lighting, door lighting, additional monitor, power tailgate, power 3rd row seats, vanity mirror lighting, ignition switch lighting
3515A HEAD LH – Left High Beam
3615A HEAD LL – Low beam
3710A Multi-port fuel injection system/sequential multi-port fuel injection system
387.5A MET – Instrument cluster
3910A IGN – SRS Airbag System, Multiport Fuel Injection System/Sequential Multiport Fuel Injection System, Immobilizer, Cruise Control, Network Gateway Unit
40–
4115A HEAD RH – High Right Beam
4215A HEAD RL – Low beam right
4310A EFI NO.2 – Multiport fuel injection system/sequential multiport fuel injection system, fuel system diagnostic pump
445A DEF I/UP –
457.5A AIR SUS NO.2 – Air suspension
46–
47–
48–
4950A AIR SUS NO.2 – Air suspension
5030A PBD – Electric Tailgate
5140A RR HTR – Air conditioning
5230A H-LP CLN – Headlight Washer
5340A DEFOG – Rear window defroster
5440A SUB BATT – Trailer Plug
55–
56–
5750A ABS, VSC
5840A ABS, VSC
5930A ST – Starting System
60–
61–
62–
6350A HTR – Air conditioning
64–
65150A LH-J/B – Fuses: “AM1”, “TAIL”, “PANEL”, “ACC”, “CIG”, “LH-IG”, “4WD”, “ECU-IG NO.1”, “BK/UP LP”, “SEAT-HTR”, “A/C IG”, “ECU-IG NO.2”, “WSH”, “WIPER”, “OBD”, “A/C”, “TI&TE”, “FR P/SEAT RH”, “MIR, DR/LCK”, “FR P/SEAT LH”, “CARGO LP”, “PWR OUTLET”, “POWER NO.1”
66180A ALT – Fuses: “LH-J/B”, “HTR”, “SUB BATT”, “TOW BRK”, “STOP”, “FOG”, “TOW TAIL”, “DEICER”
140A ALT – Fuses: “LH-J/B”, “HTR”, “SUB BATT”, “TOW BRK”, “STOP”, “FOG”, “TOW TAIL”, “DEICER”
6750A A/PUMP NO.1 – Multi-port fuel injection system/sequential multi-port fuel injection system
6850A Multi-port fuel injection system/sequential multi-port fuel injection system
6940A MAIN – Fuses: “HEAD LL”, “HEAD RL”, “HEAD LH”, “HEAD RH”
70–
71–
Relay
R1F/PMP – Fuel Pump
R2–
R3SUB BATT – Trailer battery
R4TOW TAIL – Side light (trailer)
R5DEFOG – Rear window heating
R6AIR SUS – Air Suspension
R7SECURITY HORN – Sound signal of the anti-theft system
R8FOG – Fog light
R9–
R10ST – Starter
R11C/OPN – Fuel Pump (Circuit opening)
R12–
R13MG CLT – Air Conditioning Compressor Clutch
R14DEICER – Wiper Zone Heating
R15BRK NO.2 – Brake light bulbs
R16BRK NO.1 – Brake light bulbs
R17–
R18RR WSH – Rear Window Washer
R19CDS FAN – Cooling system fan
R20HEAD – Headlights
R21DIM – Dimmer
R22–
R23–
R24–
R25–