Toyota Sienta 2nd generation was produced in 2015, 2016, 2017, 2018, 2019, 2020, 2021 with the designation P170. During this time, the model received a facelift. In this post we will present a description of fuses and relays Toyota Sienta 2 with fuse box diagrams, their locations and photo examples of performance. Let’s highlight the fuse responsible for the cigarette lighter.
Designation of fuses and relays, as well as their location in the blocks may differ from the presented and depends on the year of manufacture, region of delivery and the level of electrical equipment of your vehicle.
Passenger compartment
In the vehicle interior, the fuse box is located on the left side under the instrument panel. The protective cover must be removed for access.
Photo example
Check the element assignments against your schematics from the block cover.
Diagram
Assignment
| P/OUTLET | Power supply output (cigar light) |
| OBD | Diagnostic system |
| STOP | Stop lamps, Fuel injection system, upper stop lamp, ABS, VSC, gear lock control system |
| FOG RR | Rear fog light, gauges and meters |
| D/L NO.3 | Central locking system |
| S/ROOF | Panoramic roof sunshade |
| FOG FR | Front fog lights, gauges and meters |
| AM1 | IG1 RLY, ACC RLY |
| D/L NO.2 | Rear door locking system, central locking system |
| DOOR NO.2 | Power windows |
| DOOR R/R | Power windows |
| DOOR R/L | Power windows |
| WASHER | Windscreen washer |
| WIPER NO.2 | Windscreen wipers |
| WIPER RR | Rear window wiper |
| WIPER NO.1 | Windscreen wipers |
| CIG | Power supply output |
| ACC | Exterior rear view mirrors, audio system, main body ECU, clock, charging system, power outlet, stop-start system, Audio |
| SFT LOCK-ACC | Shift lock control system |
| TAIL | Front position lights, parking lights, license plate lights, front fog lights, rear fog light |
| PANEL | Key lighting, instrument panel lights, glove box lighting, main body ECU |
| WIPER-S | Charging system |
| ECU-IG NO.1 | Electric cooling fan, AFS, charging system, ABS, VSC |
| ECU-IG NO.2 | Reversing lights, fuel injection system, audio system, AFS, Toyota parking assist sensor |
| ECU-IG NO.3 | fuel injection system, interior rear view mirror, gear lock control system, headlight washer, audio system, AFS, panoramic roof shade, windshield washer, tire pressure warning system |
| HTR-IG | Air conditioner, rear window defogger, stop-start system |
| ECU-IG NO.4 | Main body ECU, front passenger seat belt warning light, airbag cancellation system, exterior rear view mirrors, Toyota parking assist sensor |
| ECU-IG NO.5 | Electric motor steering system, stop-start system |
| IGN | Intelligent entry and start system, Fuel injection system, steering lock system |
| S/HTR | Seat heaters |
| METER | Indicators and counters, Engine stop-start system |
| A/BAG | SRS airbag system |
The fuse designated as P / OUTLET is responsible for the operation of the cigarette lighter.
In the upper part of the box, there are fuses responsible for the electric glass lifters and the electric drive of the seats.
Engine compartment
There are 2 blocks with fuses and relays under the hood.
Main fuse box
The main box with fuses and relays is located on the left side, next to the battery and is covered by a protective cover.
Diagram
Designation
| ECD MAIN | Fuel injection system, EFI NO.2, EFI NO.3 |
| EFI NO.3 | Fuel injection system |
| HORN | Horn |
| EFI NO.2 | Stop/Start system, Fuel injection system |
| IG2 | Intelligent entry and start system, Fuel injection system, MultiMode manual transmission, SRS airbag system, steering lock system, stop lights, Engine stop/start system |
| IGN | Fuel injection system |
| MET | Indicators and counters, Engine stop/start system |
| PWR HTR | *2 Powerful heater, Fuel injection system |
| EPS | Electric power steering |
| ABS NO.2 | ABS, VSC |
| DEF | Rear window defogger, ID/UP, MIR-HTR |
| SPARE | Spare fuse |
| PTC | PTC heater |
| HTR | Air conditioning system |
| H-LP CLN | – |
| RDI FAN | Electric cooling fan |
| ABS NO.1 | ABS, VSC |
| BBC | Engine stop-start system |
| ST | Starting system |
| AMP | Audio |
| D/L NO.2 | Central lock |
| D.C.C. | DOME, ECU-B NO.1 |
| STR LOCK | Steering lock system |
| ECU-B NO.1 | Main body ECU, smart entry and start system |
| DOME | Interior lighting, audio, VSC |
| ETCS | Fuel injection system |
| HAZ | Signal lamps |
| AM2 | Fuel injection system, smart entry and start system, stop/start system, starter system, multi-mode manual gearbox |
| ECU-B NO.2 | Gauges and meters, central lock, remote control, stop/start system, smart entry and start system, multi-mode manual gearbox, air conditioning system |
| R/I | EFI MAIN, ECD MAIN, EFI NO.2, EFI NO.3, IG2, IGN, MET, KORNA |
| SPARE | Spare fuse |
| MIR-HTR | Outside rear view mirror defogger |
| ID/UP | Fuel injection system |
Additional fuse box
Appointment
| S-HORN | Horn |
| H-LP MAIN | Headlights |
| MMT | MultiMode manual gearbox |
| H-LP RH HI | Right high beam headlight |
| H-LP LH HI | Left high beam headlight, indicators and meters |
| H-LP RH LO | Right low beam headlight |
| H-LP LH LO | Left high beam headlight, manual headlight level |
On the plus terminal of the battery can also be installed high-power fuses in the form of fusible inserts.
If you have found an error or have something to add, please write in the comments.