The 4th generation Toyota Prius was produced in 2015, 2016, 2017, 2018, 2019, 2020, 2021, 2022 with the designation ZVW50, ZVW51, ZVW55. During this time, the model has been updated. Shipped all over the world. In this material we will show the location of electronic control units, a description of fuses and relays Toyota Prius 55 51 50 with box diagrams and locations. Note the cigarette lighter fuse.
The design of the boxes and their arrangement may differ from that shown. Check the assignment with your diagrams on the box cover.
Contents
Passenger compartment
Location
General layout of boxes in the cabin
LHD
RHD
Assignment
Fuse box
It is located under the dashboard on the left side, behind the protective cover.
Diagram
Protected components
| 1 | 7,5A ECU-B NO.2 – Air conditioning, cruise control, central locking, active air flap control system, hybrid system, body ECU (CAN), power windows, power mirrors, gear selector lock, anti-theft system, tire pressure monitoring system, pedestrian warning system (noise generator) |
| 2 | 5A ECU-B NO.1 – Tailgate opening system, cruise control, intelligent entry and start system, hybrid system, immobilizer, gear selector lock, start system, steering lock, pedestrian warning system (noise generator), wireless control system |
| 3 | 20A D / L – Central locking, tailgate opening system, smart entry and start system, immobilizer, start system, steering wheel lock, wireless control system |
| 4 | 7,5A STOP – Brake lights, ABS, tailgate opener, cruise control, dynamic cruise control radar, intelligent entry and start system, hybrid system, immobilizer, gear selector lock, start system, steering lock, TRC , pedestrian warning system (noise generator), VSC, wireless control system |
| 5 | 7,5A AM2 – Tailgate opening system, smart entry and start system, immobilizer, start system, steering lock, wireless control system |
| 6 | 10A HAZ – Direction indicators (hazard warning lights), tailgate opener, instrument cluster, smart entry and start system, immobilizer, start system, steering lock, wireless control system |
| 7 | 5A PANEL – Backlight, side light |
| 8 | 10A TAIL – Side light, rear fog light, front fog light, backlight |
| 9 | 20A DOOR – Window regulators |
| 10 | 20A DOOR R / R – Window regulators |
| 11 | 15A P / OUTLET NO.1 – Socket (cigarette lighter) |
| 12 | – |
| 13 | 15A WASHER – Wiper and washer, rear wiper and washer |
| 14 | 15A WIPER RR – Rear wiper and washer |
| 15 | 10A ECU-IG1 NO.4 – ABS, air conditioning, audio system, interior rearview mirror, automatic lighting system, tailgate opening system, monitor, blind spot monitoring system, instrument cluster, cruise control, central locking, double locking, dynamic cruise control radar, intelligent entry and start system, front fog light, automatic wiper, headlights, headlight range control, hybrid system, lighting, immobilizer, intelligent parking system, interior lighting, lane control system, automatic turn signal deactivation system, buzzer lights, heated mirrors, body control unit (CAN), navigation, power windows, anti-collision system, rear fog light, heated rear window, power mirrors, seat belt indicator, heated seats, gear selector lock, sunroof, starting system, steering lock, side light, counter hijacking system, tire pressure monitoring system, TRC, pedestrian warning system (noise generator), VSC, wireless control system |
| 16 | 7,5A BKUP LP – Reversing lamps, audio system, monitor, navigation |
| 17 | 5A ECU-IG1 NO.2 – ABS, TRC, VSC |
| 18 | – |
| 19 | 7,5A FOG RR – Rear fog light |
| 20 | 7,5A OBD – Diagnostic connector |
| 21 | 7,5S DOME – Interior lighting, tailgate opening system, smart entry and start system, immobilizer, start system, steering wheel lock, wireless control system |
| 22 | 7,5A DOOR BACK – Tailgate opening system, smart entry and start system, immobilizer, start system, steering lock, wireless control system |
| 23 | – |
| 24 | 10A ECU-DCC NO.2 – ABS, air conditioning, audio system, automatic lighting system, tailgate opening system, monitor, instrument cluster, cruise control, central locking, double locking, dynamic cruise control radar, engine control unit, intelligent entry and start system, EPS, front fog light, fuel filler flap, active air flap control, headlights, headlight range control, hybrid system, lighting, immobilizer, intelligent parking system, interior lighting, lane control system, automatic turn-off system for turn signals , buzzer light, navigation, power windows, anti-collision system, rear fog light, power mirrors, seat belt indicator, gear selector lock, sunroof, SRS, starting system, steering lock, side light, telematics system, anti-theft system, monitoring system tire pressure, TRC, direction indicators a (alarm), pedestrian warning system (noise generator), VSC, wireless charging system, wireless control system |
| 25 | 5A ECU-DCC NO.1 – ABS, TRC, VSC |
| 26 | 15A RADIO – Audio system, monitor, navigation |
| 27 | 20A DOOR R / L – Window regulators |
| 28 | – |
| 29 | – |
| 30 | – |
| 31 | 5A ECU-ACC – ABS, air conditioning, audio system, automatic lighting system, tailgate opening system, monitor, instrument cluster, central locking, double locking, intelligent entry and start system, front fog light, headlights, headlight range control, backlight, immobilizer, interior lighting, turn signal deactivation system, light buzzer, body electrical control unit (CAN), navigation, socket, power windows, rear fog light, power mirrors, seat belt indicator, sunroof, starting system, steering lock, side light , telematics system, anti-theft system, tire pressure monitoring system, TRC, VSC, wireless charging system, wireless control system |
| 32 | 7,5A ECU-IG1 NO.3 – Air conditioning, dynamic cruise control radar, headlights, headlight range control, lighting, lane control, heated mirrors, anti-collision system, heated rear window, side light |
| 33 | 5A EPS-IG1 – EPS |
| 34 | SRS, seat belt indicator |
| 35 | 5A METER-IG2 – ABS, Air Conditioning, Audio System, Auto Light System, Tailgate Release System, Monitor, Instrument Cluster, Cruise Control, Dynamic Cruise Control Radar, Engine Control Unit, Intelligent Entry and Start System, EPS, Front Fog light, fuel filler flap, active air flap control system, headlights, headlight range control, hybrid system, illumination, immobilizer, intelligent parking system, lane control system, turn signal automatic deactivation system, light buzzer, navigation, power windows, anti-collision system, rear fog light, seat belt indicator, gear selector lock, sunroof, SRS, starting system, steering lock, side light, telematics system, anti-theft system, tire pressure monitoring system, TRC, direction indicators (hazard warning lights), pedestrian warning system (noise generator), VSC, system wireless control |
| 36 | 5A ECU-IG2 NO.3 – ABS, cruise control, dynamic cruise control radar, hybrid system, body ECU (CAN), gear selector lock, telematics system, TRC, pedestrian warning system (noise generator), VSC |
The fuse number 11 at 15A is responsible for the cigarette lighter. Another fuse is located in the block under the hood.
Separately, on the side of the unit, there are some additional fuses.
Designation
- –
- 30A POWER – Power windows
- 30A P / SEAT – Power Seats
- 30A S / ROOF – Sliding Roof
Realy box
Diagram
Appointment
| R1 | (R/MIR (-)) |
| R2 | (R/MIR (+)) |
| R3 | Ignition (IG1 №4) |
| R4 | – |
| R5 | Front fog light (FR FOG) |
| R6 | RHD: Theft deterrent (S-HORN) |
Additional elements
Diagram
- Sunroof control unit
- Tire Pressure Monitoring System Receiver / Intelligent Entry System Receiver
- Right sensor for blind spot monitoring
- Blind Spot Monitor Left Sensor
- Distribution block
- Battery gauge
Engine compartment
Location
General arrangement of boxes under the hood
Decoding
- Fuse and Relay Box
- Fusible Link Box
- Headlight Light Control ECU (LH)
- Headlight Light Control ECU (RH)
- Relay Box
- RHD: Brake Booster with Master Cylinder
- Inverter with Converter
- ECM
- LHD: Brake Booster with Master Cylinder
Fuse and relay box
Located on the left side of the engine compartment.
Photo example
Diagram
Assignment
| 1 | 30А WIPER – Screen wiper and washer |
| 2 | 15A P / OUTLET NO.2 – Socket |
| 3 | 20A DOOR DBL / L – Double blocking |
| 4 | – |
| 5 | 10A FUEL OPN – Engine control unit, fuel filler flap |
| 6 | 20A S / HTR-MAIN – Heated seats |
| 7 | – |
| 8 | 10A FOG FR – Front fog light |
| 9 | 20A TOWING – DC / DC – Trailer connector |
| 10 | 25A ENG W / PMP – Engine control unit, air conditioning, fuel filler flap |
| 11 | – |
| 12 | – |
| 13 | – |
| 14 | – |
| 15 | – |
| 16 | – |
| 17 | – |
| 18 | 10A S / HTR F / L – Heated seats |
| 19 | 10A S / HTR F / R – Heated seats |
| 20 | 10A EFI NO.2 – Air Conditioning, Cooling Fan, Engine Control Unit, Fuel Tank Flap |
| 21 | 10A EFI NO.3 – Engine control unit, fuel filler flap |
| 22 | 15A INJ – Ignition, instrument cluster, engine control unit, fuel filler flap |
| 23 | 10A ECU-IG2 NO.1 – Cruise control, ECM, fuel filler flap, hybrid system, gear selector lock, pedestrian warning system (noise generator) |
| 24 | 10A PM-IGCT – Hybrid system, cruise control, dynamic cruise control radar, gear selector lock, pedestrian warning system (noise generator) |
| 25 | 10A IGCT NO.2 – Cruise control, dynamic cruise control radar, hybrid system, gear selector lock, pedestrian warning system (noise generator) |
| 26 | 15A BATT FAN – Hybrid system, cruise control, gear selector lock, pedestrian warning system (noise generator) |
| 27 | 10A PCU FR – Hybrid system, cruise control, gear selector lock, pedestrian warning system (noise generator) |
| 28 | 10A INV W / PMP – Hybrid system, cruise control, gear selector lock, pedestrian warning system (noise generator) |
| 29 | 10A PCU BUB / PCU RR – Hybrid system, cruise control, gear selector lock, pedestrian warning system (noise generator) |
| 30 | 20A TOWING -B – Trailer connector |
| 31 | 10A S-HORN – Anti-theft system |
| 32 | – |
| 33 | 10A ETCS – Engine Control Unit, fuel filler flap |
| 34 | 10A HORN – Horn, tailgate opener system, smart entry and start system, immobilizer, start system, steering lock, wireless control system |
| 35 | – |
| 36 | – |
| 37 | – |
| 38 | 25A D / C CUT – Fuses: “ECU-DCC NO.2”, “ECU-DCC NO.1”, “RADIO” |
| 39 | 20A EFI-MAIN – Engine control unit, Cooling fan, air conditioner, fuel filler flap |
| 40 | – |
| 41 | 25A IG2-MAIN – Fuses: “ECU-IG2 NO.1”, “INJ” |
| 42 | – |
| 43 | 5A BATT-S – Cruise control, hybrid system, gear selector lock, pedestrian warning system (noise generator) |
| 44 | 10A AMP – Audio system, monitor, navigation |
| 45 | |
| 46 | 10A ABS NO.3 – ABS, TRC, VSC |
| 47 | 10A ABS NO.2 – ABS, TRC, VSC |
| 48 | 10A DCM / MAYDAY – Telematics system |
| 49 | 30A P CON MTR – Hybrid system, cruise control, gear selector lock, pedestrian warning system (noise generator) |
| 50 | 20A H-LP RH – Right headlight |
| 51 | 20A H-LP LH – Left headlight |
| 52 | 50A DEF – Heated rear window, heated mirrors |
| 53 | 30A PTC HTR NO.3 – Auxiliary heater |
| 54 | – |
| 55 | 40A HTR – Air Conditioning |
| 56 | 30A PTC HTR NO.2 – Auxiliary heater |
| 57 | 10A ABS MTR NO.2 – ABS, TRC, VSC |
| 58 | – |
| 59 | 30A FAN NO.2 – Cooling fan |
| 60 | 50A PTC HTR NO.1 – Auxiliary heater |
| 61 | 30A FAN NO.1 – Cooling fan |
| 62 | 30A ABS-MAIN – ABS, TRC, VSC |
| 63 | – |
| 64 | 40A IGCT-IG – Hybrid system, cruise control, dynamic cruise control radar, gear selector lock, pedestrian warning system (noise generator), fuses: “INV W / PMP”, “PCU FR”, “BATT FAN”, “PCU BUB / PCU RR”, “IGCT NO.2”, “PM-IGCT” |
| 65 | 30A ABS MTR NO.3 – ABS, TRC, VSC |
| 66 | 30A ABS MTR NO.1 – ABS, TRC, VSC |
| 67 | 50A J / B-B – Fuses: IG2-NO.2 Relay, “D / L”, “ECU-B NO.1”, “ECU-B NO.2”, “HAZ”, “STOP”, “AM2” |
| 68 | – |
| 69 | – |
| 70 | – |
| R1 | (IGCT) |
| R2 | (ENG W / PMP) |
| R3 | Sound signal |
Relay box
Diagram
Designation
| 1 | 10А MIR HTR – Heated mirrors, heated rear window |
| 2 | 10A DRL – Daytime running lights |
| R1 | Heated rear window (DEF) |
| R2 | Auxiliary heater (PTC HTR NO.1) |
| R3 | Fuel pump (C / OPN) |
| R4 | Cooling fan (FAN NO.3) |
| R5 | Cooling fan (FAN NO.2) |
| R6 | Auxiliary heater (PTC HTR NO.2) |
| R7 | Cooling fan (FAN NO.1) |
| R8 | – |
| R9 | – |
| R10 | Auxiliary heater (PTC HTR NO.3) |
Fusible link box
- 60A J / B-AM – ACC relay, TAIL relay, IG1-NO.2 relay, IG1-NO.1 relay, fuses: “POWER”, “P / SEAT”, “S / ROOF”, “DOOR R / R “,” DOOR R / L “,” DOOR “,” FOG RR “,” DOME “,” OBD “,” DOOR BACK “
- 80A EPS – EPS
- 120А DC / DC – Fuses: “J / B-AM”, “FOG FR”, “ENG W / PMP”, “” HTR “,” ABS MTR NO.2 “,” FAN NO.1 “,” FAN NO .2 “,” FUEL OPN “,” P / OUTLET NO.2 “,” PTC HTR NO.3 “,” PTC HTR NO.2 “,” PTC HTR NO.1 “,” ABS-MAIN “,” DOOR DBL / L “,” WIPER “,” S / HTR-MAIN “,” TOWING-DC / DC “,” DEF “
- 140А BATT-MAIN – Fuses: “HORN”, “ETCS”, “TOWING-B”, “ABS MTR NO.1”, “S-HORN”, “P CON MTR”, “DCM / MAYDAY”, “ABS NO .2 “,” ABS NO.3 “,” BATT-S “,” ABS MTR NO.3 “,” H-LP LH “,” AMP “,” H-LP RH “,” J / BB “,” D / C CUT “,” IGCT-IG “,” EFI-MAIN “,” IG2- MAIN “,” DRL “
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