Toyota Prius 20 represents the 2nd generation of the Toyota Prius range produced in 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010. During this time, the model has been restyled. In this publication you will find information on the location of electronic control units, a description of fuses and relays Toyota Prius 20 with diagrams and their locations. Note the cigarette lighter fuse.
This car has been delivered all over the world, there are models with both left and right steering positions. Therefore, the execution of the blocks and the purpose of the elements in them may differ from the one presented. Match the diagrams with your own, which are printed on the box cover.
Contents
Passenger compartment
Location
General layout of boxes in the cabin
Assignment
- Navigation control unit
- Skid Control
- Fuse box
- Auxiliary relay (ACC)
- Body electrical control unit
- Heated mirror relay
- Socket relay
- Daytime running light relay
- Power supply control unit
- Smart Key Control Box
- Distribution block
- Tire pressure monitor
- Power steering control unit
- Network gateway block
- Key transponder unit
- Hybrid control unit
- The engine control unit
- Distribution block No. 2
- Headlight range control unit
- Transmission control unit
- Audio amplifier
- Air conditioner control unit
- Airbag unit
Fuse box
In the passenger compartment, the fuse box is located under the panel below, behind the protective cover.
Photo example of execution
Photo diagram
Protected components
1 | – |
2 | 15A M / HTR – Heated mirrors |
3 | 30A WIP – Windscreen wiper |
4 | 15A RR WIP – Rear wiper |
5 | 20A WSH – Glass washer |
6 | 7,5A ECU-IG – Smart Access System with Start Button, Power Windows, Power Steering, Anti-theft System, Multi-Information Display |
7 | 10A GAUGE – Instrument Cluster, Brake Lights, Hazard Lights, Power Windows |
8 | 7,5A OBD – Diagnostic connector |
9 | 7,5A STOP – Brake lights |
10 | – |
11 | 25A DOOR – Central locking |
12 | 25A ACC − B – Fuses: “POWER OUTLET”, “ACC” |
13 | 15A ECU − B – Multi – information display, power windows, air conditioning |
14 | – |
15 | 7,5A AM1 – Hybrid system |
16 | 10A TAIL – Side light, license plate light |
17 | 7,5A PANEL – Multi – information display, clock, audio system, instrument panel illumination |
18 | 10A A / C (HTR) – Air Conditioning |
19 | 20A FR DOOR – Window regulators |
20 | – |
21 | – |
22 | – |
23 | 15A PWR OUTLET – Socket |
24 | 7.5A ACC – Audio system, multi-information display, clock |
25 | – |
26 | – |
27 | – |
28 | – |
29 | 15A PWR OUTLET FR – Socket |
30 | 7,5A IGN – Hybrid system, immobilizer, SRS airbag system |
31 | – |
Fuses 23 and 29 at 15A are responsible for the operation of the cigarette lighter.
Additional fuses and relays are attached to the side of the unit itself.
Diagram
Designation
Fuses
- 30A PWR – Power Windows
- 40A DEF – Heated rear window
- –
Relay
- R1- Ignition (IG1)
- R2 – Heater (HTR)
- R3 – Direction indicators (hazard warning lights)
Additional elements
Diagram
Appointment
- Classification system control unit
- Distribution block
- Central locking receiver
- Rear wiper relay
- Battery fan relay
- Antenna and receiver for tire pressure monitoring system
- Power fuse box
- Battery control unit
- Main relay
Power fuse box
It is located in the luggage compartment on the positive battery terminal.
Diagram
Decoding
- 5A DC / DS-S – Inverter and Converter
- 120A MAIN – Hybrid System
Engine compartment
Location
General arrangement of boxes under the hood
Description
- Fuse and relay box
- Headlamp control unit (2003-2005)
- Headlamp control unit (2003-2005)
- Relay box
Fuse and relay box
Located on the left side of the engine compartment.
Example of a diagram from the box cover
Diagram
Protected components
1 | 30A Spare fuse |
2 | 15A Spare fuse |
3 | 7, A DRL – Daytime running lights |
4 | 10A H − LP LO RH -Halogen bulbs: Low beam right |
15A H − LP LO RH – Discharge lamps: Low beam right | |
5 | 10A H-LP LO LH – Halogen bulbs: Low beam left |
15A H-LP LO LH – Discharge lamps: Low beam left | |
6 | 10A H − LP HI RH – High beam right |
7 | 10A H − LP HI LH – High beam left |
8 | 15A EFI – Multiport fuel injection system / sequential multiport fuel injection system |
9 | 15A AM2 – Ignition, fuse: “IGN” |
10 | 10A HORN – Sound signal |
11 | 20A HEV – Hybrid system |
12 | 7,5A P CON MAIN – Immobilizer, parking brake control system |
13 | 30A P CON MTR – 2003-2004: Parking brake control system |
25A ABS − 1 – 2003-2009: ABS | |
14 | 10A ETCS – Throttle Control System |
15 | 10A BATT FAN – High voltage battery fan |
16 | 10A HAZ – Direction indicators, hazard warning lights |
17 | 15A DOME – Audio system, interior lighting, instrument cluster, direction indicators, luggage compartment lighting, clock, smart access system with start button |
18 | 15A ABS |
19 | 10A ABS |
20 | 10A ABS |
21 | 15A FR FOG – Fog light |
22 | 10A CHS W / P |
23 | 30A AMP – Audio system |
24 | 30A PTC HTR2 – Auxiliary heater (PTC) |
25 | 30A PTC HTR1 – Auxiliary heater (PTC) |
26 | 30A CDS FAN – Cooling fan |
27 | – |
28 | – |
29 | 60A P / I – Fuses: “AM2”, “HEV”, “EFI”, “HORN” |
30 | 40A HEAD MAIN – Headlight relay |
31 | – |
32 | 30A ABS-1 – ABS MTR Relay |
33 | 30A ABS |
34 | – |
35 | 100A DC / DC – PWR relay, side light relay, ignition relay (IG1), fuses: “ACC-B”, “ESP”, “HTR”, “RDI”, “PS HTR”, “PWR OUTLET FR”, ” ECU-B “,” OBD “,” STOP “,” DOOR “,” FR DOOR “,” DEF “,” AM1 “ |
36 | – |
37 | – |
38 | 50A PS HTR – Air Conditioner |
39 | 30A RDI – Engine control unit, cooling fan, hybrid system |
40 | 40A HTR – Air conditioning (heater), hybrid system |
41 | 50A ESP |
42 | – |
Relay | |
R1 | ABS (ABS No.2) |
R2 | ABS (ABS MTR 2) |
R3 | Headlights (H-LP) |
R4 | Dimmer |
R5 | Parking brake control system (P CON MTR) |
R6 | Cooling fan (FAN No.3) |
R7 | Cooling fan (FAN No.2) |
R8 | ABS (ABS MTR) |
R9 | ABS (ABS No.1) |
Relay box
Assignment
- R1 PS HTR
- R2 Fog light
- R3 Auxiliary heater (PTC HTR1)
- R4 Auxiliary heater (PTC HTR2)
- R5 Daytime running lights (DRL No.4)
- R6 CHS W / P
- R7 –
We have also prepared a video on our YouTube channel. Watch and subscribe.
If you have any questions or have something to add – write in the comments.
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