Table of Contents
Renault Laguna 3 generations (X91: BT, KT, DT) was produced in 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015 and 2016. A station wagon version called Estate appeared on the market at the same time as the hatchback.
We provide information with a description of all electronic control units, fuses and relays of Laguna 3, block diagrams and the purpose of their elements. We will pay special attention to the fuses responsible for the cigarette lighter and sockets.
General arrangement
Location of all electrical equipment.
|
|
| No. | Component |
| 1 | ABS control module |
| 2 | Air conditioning control module - behind the glove box |
| 3 | A / C / Heater Blower Motor Control Module |
| 4 | Accumulator battery |
| 5 | CAN data bus, gateway control unit |
| 6 | Diagnostic connector (DLC) |
| 7 | Driver's door control module |
| 8 | Passenger door electrical control module |
| 9 | Electric parking brake control module - under the bottom |
| 10 | Engine control module |
| 11 | Coolant preheater control module |
| 12 | Four Wheel Steering Control Module - Under Bottom |
| 13 | Fuse box, engine compartment 1 |
| 14 | Fuse box, engine compartment 2 |
| 15 | Fuse box, engine compartment 3 - fuses in the under-hood fuse box - supply circuits: Alternator, under-hood fuse / relay box 1, under-hood fuse / relay box 2, instrument panel fuse / relay box 1, multifunction box control 2, power steering pump, starter. |
| 16 | Fuse box, passenger compartment 1 |
| 17 | Fuse box, passenger compartment 2 - with auxiliary heater |
| 18 | Xenon headlight control mounting block |
| 19 | Glow plug relay |
| 20 | Sound signal (horn) |
| 21 | |
| 22 | Multifunctional control unit 1- functions: central locking, alarm, rear window defroster, horn, immobilizer, direction indicators, interior lamps, keyless entry and start, fog lights, wiper / washer rear window, steering column lock, brake lights, rear door opener drive, windshield washer |
| 23 | Multifunctional control unit 2- integrated with fuse / relay box 1 in the engine compartment - functions: Air conditioning, cooling fan motor, engine oil level sensor, fog lights, fuel pump, headlights, headlight washers, reversing lights, front marker lamps, rear marker lamps , windshield wipers |
| 24 | Navigation control module |
| 25 | Parking Control Module - Behind Right Rear Trim Panel |
| 26 | Power steering control module |
| 27 | Seat adjustment control module |
| 28 | Seat heating control module 1- under the seat |
| 29 | Seat heating control module 2- under the seat |
| 30 | Seat Heater Module - Under Seat |
| 31 | SRS electronic unit |
| 32 | Electronic gearbox unit |
In the passenger compartment
Fuse box located at the bottom left of the dashboard.
| Diagram | |
|---|---|
|
|
| № | Asmp / Description |
| R1 | Time delay fuse supply relay F39, F40, F41, F42, F43, F44, F49, F50, F51, F52 |
| R2 | Heated rear window relay |
| R3 | Horn relay |
| R4 | Empty |
| R5 | Empty |
| R6 | Empty |
| R7 | Empty |
| R8 | Empty |
| R9 | Time delay fuse supply relay F45, F46, F47, F48, F53, F54, F55, F56, F57, F58 |
| R10 | Empty |
| F1 | Empty |
| F2 | Empty |
| F3 | Empty |
| F4 | Empty |
| F5 | (5A) Interior lamps |
| F6 | (5A) Interior rearview mirror |
| F7 | Empty |
| F8 | Empty |
| F9 | Empty |
| F10 | Empty |
| F11 | Empty |
| F12 | (40A) Heated rear window |
| F13 | Empty |
| F14 | Empty |
| F15 | Empty |
| F16 | Empty |
| F17 | Empty |
| F18 | (20A) UCH |
| F19 | (20A) UCH |
| F20 | (10A) UCH |
| F21 | (15A) Burglar alarm ECU, display |
| F22 | (15A) UCH |
| F23 | (30A) Passenger door control module |
| F24 | (30A) Driver's door control module |
| F25 | (25A) Heated seats |
| F26 | (15A) UCH |
| F27 | Empty |
| F28 | (30A) Moonroof |
| F29 | (25A) Parking brake |
| F30 | (20A) Trailer electrical connector |
| F31 | (10A) UCH |
| F32 | Empty |
| F33 | (25A) Audio system |
| F34 | Empty |
| F35 | Empty |
| F36 | (20A) Audio system, display |
| F37 | (10A) Instrument panel |
| F38 | Empty |
| F39 | Empty |
| F40 | (5A) Brake light switch, ABS and ESP control units |
| F41 | Empty |
| F42 | (25A) Power seats |
| F43 | |
| F44 | (15A) Luggage compartment bodywork power connector |
| F45 | Empty |
| F46 | Empty |
| F47 | Empty |
| F48 | (10A) Second row accessory power connector |
| F49 | (5A) ECU for air conditioning |
| F50 | (30A) Power windows |
| F51 | (5A) Interior lighting lamps |
| F52 | (5A) Audio system, central locking, emergency alarm |
| F53 | Empty |
| F54 | (10A) Cigarette lighter fuse |
| F55 | (5A) Interior temperature sensor blower |
| F56 | (15A) Heated windscreen washer jet, left |
| F57 | Empty |
| F58 | (40A) ECU for the air conditioner |
In the luggage compartment
The block is located on the battery side, it consists of high-power fuse-links.
|
||
| № | Description | Amps |
| F1 | starter | |
| F2 | Battery disconnect unit | 250 |
| F3 | Passenger compartment fuse and relay box | 60 |
In the engine compartment
There are three mounting blocks in the engine compartment on the right side.
Fuse box #1
General view.
| Diagram | ||
|---|---|---|
|
||
| No. | Decoding | Amps |
| D1 | Spare diode | - |
| D2 | Spare diode | - |
| D3 | Cooling fan diode | 49 |
| D4 | Spare diode | - |
| FM1 | Fuse for cooling fan, protection and switching unit | 60 |
| FM2 | Spare | - |
| FM3 | Spare | - |
| FM4 | Spare | - |
| FM5 | Preheating unit | 70 |
| FM6 | Coolant Heater Interface Block | 70 |
| FM7 | 70 | |
| FM8 | Fuse for injection computer, fuel heater relay, fan relay when connected in series and in parallel | 20 |
| FM9 | Spare | - |
| FM10 | Spare | - |
| FM11 | Spare | - |
| FM12 | Spare | - |
| FM13 | Spare | - |
| FH1 | Passenger compartment fuse box | 80 |
| FH2 | Passenger compartment fuse box - protection and switching unit | 80 |
| FH3 | ABS / ESP ECU | 40 |
| FH4 | Passenger compartment fuse box | 80 |
| FH5 | Air conditioning ECU | 60 |
| FH6 | ECU of the system of all steered wheels | 60 |
| FH7 | Air conditioning ECU | 30 |
| FH8 | Spare | - |
Fuse box #2
General view.
| Diagram | ||
|---|---|---|
|
||
| No. | Decoding | Amps |
| F1 | Right headlight fuse, headlight range control | 10 |
| F2 | Fuse for left headlight, switch glass, rear door lift | 10 |
| F3 | Headlight washers | 15 |
| F4 | Fog lights | 20 |
| F5 | Left headlight | 10 |
| F6 | Right headlight | 10 |
| F7 | Diagnostic connector, fuse and relay box in the passenger compartment, gear indicator | 15 |
| F8 | ABS / ESP system | 30 |
| F9 | Windshield wiper | 30 |
| F10 | Airbag / seatbelt ECU, steering column switches | 10 |
| F11 | Empty | - |
| F12 | Electronic gearbox control unit | 7.5 |
| F13 | Empty | - |
| F14 | Rear and front oxygen sensor, diesel sensor | 15 |
| F15 | Fuse for transmission ECU | 20 |
| F16 | Brake light switch, fuel heating relay | 5 |
| F17 | Reverse light relay, manual transmission position sensor | 10 |
| F18 | UCH | 15 |
| F19 | Starter | 25 |
| F20 | Empty | - |
| F21 | Empty | - |
| F22 | Air conditioning | 10 |
| F23 | Fuel injection ECU | 5 |
| F24 | Left headlights | 15 |
| F25 | Right headlight | 15 |
Power fuse panel
Located on the battery.
| Diagram | ||
|---|---|---|
|
||
| No. | Description | Amps |
| F1 | Empty | - |
| F2 | Empty | - |
| F3 | Fuse for the supply circuit "+" of the battery through the fuse for the fuse and relay box in the passenger compartment, the protection and switching unit | 80 |
| F4 | Fuse for generator, engine compartment fuse and relay box | 300 |
| F5 | Empty | - |
| F6 | Fuse for the supply circuit "+" of the battery through the fuse to the injectors> the fuel pump through the protection and switching unit, the injection computer, the water pump for cooling the bearings | 35 |
| F7 | Protection and switching unit fuse | 5 |
