Toyota Prius 4th generation was produced in 2015, 2016, 2017, 2018, 2019, 2020 with the designation ZVW50, ZVW51, ZVW55. During this time, the model was updated. It was supplied 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 block diagrams and locations. Note the cigarette lighter fuse.
The execution of the blocks and their location may differ from that shown. Check the purpose with your diagrams on the block cover.
Blocks in the cabin
Location
General layout of the units in the cabin
Left hand drive
- Air conditioner booster
- Windscreen wiper relay
- Fuse Box / Body Electrical Control Unit
- Relay block
- Power Steering Control Unit
- Instrument cluster control unit
- Hybrid Control Unit
- Parking sensor control unit
- Driver assistance systems control unit
- Network Gateway Block
- Navigation control unit
- LHD: Telematics Transceiver
- Airbag control unit
- Audio amplifier
- RHD: Double Locking Relay
Fuse box
It is located under the instrument panel on the left side, behind the protective cover.
| 1 | 7.5A ECU-B NO.2 – Air conditioning, cruise control, central locking, active air flaps, hybrid system, body control unit (CAN), power windows, electric mirrors, gear selector lock, anti-theft alarm system, tire pressure monitoring system, pedestrian warning system (noise generator) |
| 2 | 5A ECU-B NO.1 – Tailgate opening system, Cruise control, Smart entry and start system, Hybrid system, Immobilizer, Gear selector lock, Starting system, Steering wheel lock, Pedestrian warning system (noise generator), Wireless control system |
| 3 | 20A D/L – Central locking, tailgate opening system, intelligent entry and start system, immobilizer, start system, steering wheel lock, wireless control system |
| 4 | 7.5A STOP – Brake lights, ABS, tailgate opening system, cruise control, dynamic radar cruise control, intelligent entry and start system, hybrid system, immobilizer, gear selector lock, starting system, steering wheel lock, TRC, pedestrian warning system (noise generator), VSC, wireless control system |
| 5 | 7.5A AM2 – Tailgate Opener, Smart Entry & Start System, Immobilizer, Start System, Steering Wheel Lock, Wireless Control System |
| 6 | 10A HAZ – Direction indicators (hazard warning lights), trunk lid opening system, instrument cluster, smart entry & start system, immobilizer, starting system, steering wheel lock, wireless remote control system |
| 7 | 5A PANEL – Lighting, side light |
| 8 | 10A TAIL – Side light, rear fog light, front fog light, illumination |
| 9 | 20A DOOR – Window lifters |
| 10 | 20A DOOR R/R – Window lifters |
| 11 | 15A P/OUTLET NO.1 – Socket (cigarette lighter) |
| 12 | – |
| 13 | 15A WASHER – Windscreen wiper and washer, rear windscreen wiper and washer |
| 14 | 15A WIPER RR – Rear Windscreen Wiper and Washer |
| 15 | 10A ECU-IG1 NO.4 – ABS, air conditioning, audio system, interior rearview mirror, automatic lighting system, trunk lid opening system, monitor, blind spot monitoring system, instrument cluster, cruise control, central locking, double locking, dynamic radar cruise control, intelligent entry & start system, front fog light, automatic wiper, headlights, headlight beam range control, hybrid system, illumination, immobilizer, intelligent parking system, interior lighting, lane keeping system, automatic turn signal off system, light buzzer, mirror heating, body electrical control unit (CAN), navigation, power windows, collision avoidance system, rear fog light, rear window heating, electric mirrors, seat belt indicator, heated seats, gear selector lock, sunroof, starting system, steering wheel lock, parking light, anti-theft system, tire pressure monitoring system, TRC, Pedestrian warning system (noise generator), VSC, wireless control system |
| 16 | 7.5A BKUP LP – Reverse lights, 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, trunk lid opening system, intelligent entry and start system, immobilizer, start system, steering wheel lock, wireless control system |
| 22 | 7.5A DOOR BACK – Tailgate release system, intelligent entry and start system, immobilizer, start system, steering wheel lock, wireless control system |
| 23 | – |
| 24 | 10A ECU-DCC NO.2 – ABS, air conditioning, audio system, automatic lighting system, trunk lid opening system, monitor, instrument cluster, cruise control, central locking, double locking, dynamic radar cruise control, engine control unit, intelligent entry & start system, EPS, front fog light, fuel filler flap, active air damper control system, headlights, headlight range control, hybrid system, lighting, immobilizer, intelligent parking system, interior lighting, lane keeping system, automatic turn signal off system, light buzzer, navigation, power windows, collision avoidance system, rear fog light, electric mirrors, seat belt indicator, gear selector lock, sunroof, SRS, starting system, steering wheel lock, parking light, telematics system, anti-theft system, tire pressure monitoring system, TRC, turn signals (hazard warning), system Pedestrian warning (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 Lifters |
| 28 | – |
| 29 | – |
| 30 | – |
| 31 | 5A ECU-ACC – ABS, air conditioning, audio system, automatic lighting system, trunk lid opening system, monitor, instrument cluster, central locking, double locking, intelligent entry & start system, front fog light, headlights, headlight range control, lighting, immobilizer, interior lighting, automatic turn signal off system, light buzzer, body electrical control unit (CAN), navigation, socket, power windows, rear fog light, electric mirrors, seat belt indicator, sunroof, starting system, steering wheel lock, parking 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 radar cruise control, headlights, headlight beam corrector, backlight, lane keeping assist system, heated mirrors, collision avoidance system, heated rear window, parking light |
| 33 | 5A EPS-IG1 – EPS |
| 34 | SRS, seat belt indicator |
| 35 | 5A METER-IG2 – ABS, air conditioning, audio system, automatic lighting system, trunk lid opening system, monitor, instrument cluster, cruise control, dynamic radar cruise control, engine control unit, intelligent entry and start system, EPS, front fog light, gas filler door, active air damper control system, headlights, headlight range control, hybrid system, backlight, immobilizer, intelligent parking system, lane keeping system, automatic turn signal off system, light buzzer, navigation, power windows, collision avoidance system, rear fog light, seat belt indicator, gear selector lock, sunroof, SRS, starting system, steering wheel lock, parking light, telematics system, anti-theft system, tire pressure monitoring system, TRC, turn signals (hazard warning), pedestrian warning system (noise generator), VSC, wireless control system |
| 36 | 5A ECU-IG2 NO.3 – ABS, Cruise Control, Dynamic Radar Cruise Control, Hybrid System, Body Control Module (CAN), Gear Selector Lock, Telematics System, TRC, Pedestrian Warning System (Noise Generator), VSC |
The fuse number 11 for 15A is responsible for the cigarette lighter. Another fuse is located in the block under the hood.
Separately, on the side of the block there are some additional fuses.
Scheme
- –
- 30A POWER – Window lifters
- 30A P/SEAT – Electric seats
- 30A S/ROOF – Hatch
Relay block
Scheme
| R1 | (R/MIR (-)) |
| R2 | (R/MIR (+)) |
| R3 | Ignition (IG1 NO.4) |
| R4 | – |
| R5 | Front fog light (FR FOG) |
| R6 | RHD: Anti-theft system (S-HORN) |
Additional elements
Scheme
- Hatch control unit
- Tire Pressure Monitoring System Receiver / Intelligent Entry System Receiver
- Right blind spot monitoring system sensor
- Left blind spot monitoring system sensor
- Distribution block
- Battery sensor
Blocks under the hood
Location
General layout of the blocks under the hood
- Fuse and relay box
- Power fuse box
- Left headlight control unit
- Right headlight control unit
- Relay block
- RHD: Brake Control Unit
- Inverter with converter
- Engine control unit
- LHD: Brake Control Unit
Fuse and relay box
Located on the left side of the engine compartment.
Photo example
| 1 | 30A WIPER – Windscreen wiper and washer |
| 2 | 15A P/OUTLET NO.2 – Socket |
| 3 | 20A DOOR DBL/L – Double Locking |
| 4 | – |
| 5 | 10A FUEL OPN – Engine Control Module, Fuel Filler Door |
| 6 | 20A S/HTR-MAIN – Seat heating |
| 7 | – |
| 8 | 10A FOG FR – Front Fog Light |
| 9 | 20A TOWING – DC/DC – Trailer Socket |
| 10 | 25A ENG W/PMP – Engine Control Unit, Air Conditioning, Fuel Filler Door |
| 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 Conditioner, Cooling Fan, Engine Control Unit, Fuel Filler Door |
| 21 | 10A EFI NO.3 – Engine Control Unit, Fuel Filler Door |
| 22 | 15A INJ – Ignition, instrument cluster, engine control unit, fuel filler flap |
| 23 | 10A ECU-IG2 NO.1 – Cruise control, engine control unit, fuel filler flap, hybrid system, gear selector lock, pedestrian warning system (noise generator) |
| 24 | 10A PM-IGCT – Hybrid system, cruise control, dynamic radar cruise control, gear selector lock, pedestrian warning system (noise generator) |
| 25 | 10A IGCT NO.2 – Cruise control, dynamic radar cruise control, 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, Shift Lock, Pedestrian Alert (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 socket |
| 31 | 10A S-HORN – Anti-theft system |
| 32 | – |
| 33 | 10A ETCS – Engine Control Unit, Fuel Filler Cap |
| 34 | 10A HORN – Horn, Tailgate Release System, Smart Entry & Start System, Immobilizer, Start System, Steering Wheel Lock, Wireless Remote 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 Door |
| 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 – Rear window heating, mirror heating |
| 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 system fan |
| 60 | 50A PTC HTR NO.1 – Auxiliary Heater |
| 61 | 30A FAN NO.1 – Cooling system fan |
| 62 | 30A ABS-MAIN – ABS, TRC, VSC |
| 63 | – |
| 64 | 40A IGCT-IG – Hybrid system, cruise control, dynamic radar cruise control, 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/BB – 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 block
Scheme
| 1 | 10A MIR HTR – Heated mirrors, heated rear window |
| 2 | 10A DRL – Daytime Running Lights |
| R1 | Rear window heating (DEF) |
| R2 | Auxiliary heater (PTC HTR NO.1) |
| R3 | Fuel pump (C/OPN) |
| R4 | Cooling system fan (FAN NO.3) |
| R5 | Cooling system fan (FAN NO.2) |
| R6 | Auxiliary heater (PTC HTR NO.2) |
| R7 | Cooling system fan (FAN NO.1) |
| R8 | – |
| R9 | – |
| R10 | Auxiliary heater (PTC HTR NO.3) |
Power fuse 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
- 120A 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”
- 140A 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”