Alfa Romeo 166 facelifting (2003-2007) – fuse and relay box
Diagrams of fuse boxes and relays – Alfa Romeo 166
Applies to vehicles manufactured in the years:
2003, 2004, 2005, 2006, 2007.
The lighter in the Alfa Romeo 166 is responsible for the fuse 7 in the fuse box in the trunk.
Fuses and relays in the control unit
The fuses for the main devices are located in the control unit under the dashboard, on the left side of the steering column.
Fuses and relays in the engine compartment
| Number | Description |
| A | Dipped beam |
| B | Air conditioning fan |
| C. | Horn |
| D | Front fog lamp |
| E. | Petrol versions (single fan):
engine radiator (high speed) |
| JTD versions (with two fans):
engine radiator (high speed). |
|
| F. | Conditioner compressor |
| H. | Petrol versions:
engine radiator (low speed). |
| JTD versions (with two fans):
engine radiator (high speed). |
|
| L | . Fuel pump |
| M. | Electronic main injection relay |
| N | Starter |
| P. | Heating of the diesel fuel filter
(JTD versions). |
| JTD versions (with two fans):
engine radiator (low speed). |
Fuses and relays in the trunk
| Number | Description |
| A | Air mixing actuator;
Air conditioner; Additional heater control (JTD versions). |
| B | Rear window heater relay |
| C. | Seat heating control;
Electrochromic road mirror; Visor; Rain sensor; Parking sensor control unit; Side mirror indicator light; Remote control receiver; Alarm system control unit; Driver’s window control LOCK warning light. |
| D | Windshield heating;
Defrosting the exterior mirrors. |
| E. | Front seat heating;
Rear current socket; Electric adjustment of the front seats; Electrically operated sunroof. |
| F. | Direction indicators;
Pre-setting the trailer. |
Summary of the fuse table
| External lighting | Number | Amperes [A] | location |
| Brake lights (switch) | 9 | 5 | 86 |
| 1 | 15 | 86 | |
| Direction indicators | 12 | 10 | 93 |
| Exterior lighting (control) | 5 | 10 | 86 |
| Front fog lamps | 16 | 15 | 89 |
| Headlamps and headlamp position sensor
(gas-discharge headlamps) |
6 | 7.5 | 86 |
| IGE control unit: | |||
| – brake light switch | 1 | 15 | 86 |
| – brake lights | 9 | 5 | 86 |
| – reflector | 11 | 15 | 86 |
| – left position lights | 17 | 10 | 86 |
| – rear lamp units | 15 | 10 | 86 |
| – right position lights | 8 | 10 | 86 |
| Left low beam | 12 | 15 | 89 |
| Reversing lamps
(only versions with manual gearbox) |
13 | 10 | 86 |
| Right low beam | 10 | 15 | 89 |
| Indoor lighting | Number | Amperes [A] | location |
| Dashboard lighting dimmer | 5 | 10 | 86 |
| Side mirror indicator light | 15 | 10 | 93 |
| Glove box lighting | 5 | 10 | 86 |
| Seat heating indicator light | 15 | 10 | 93 |
| Sun visor lighting | 15 | 10 | 93 |
| System / Component | Number | Amperes [A] | location |
| ABI control unit | 13 | 10 | 86 |
| ABI control unit –
Central lock |
19 | 20 | 93 |
| ABI control unit –
Left windscreen |
18 | 20 | 93 |
| ABI control unit –
Right windscreen |
3 | 20 | 93 |
| ABI control unit –
Left rear window |
14 | 20 | 93 |
| ABI control unit –
Rear right power window |
17 | 20 | 93 |
| ABS control unit | 9 | 5 | 86 |
| 7 | 40 | 89 | |
| 3 | 40 | 89 | |
| Additional heater
(JTD versions) |
17 | 20 | 89 |
| 13 | 10 | 93 | |
| Alarm system
(control unit) |
12 | 10 | 93 |
| 15 | 10 | 93 | |
| Alfa Romeo code system | 20 | 5 | 86 |
| 16 | 5 | 86 | |
| Mobile phone (handset) | 18 | 5 | 86 |
| 5 | 10 | 86 | |
| Central lock
(ABI control unit) |
19 | 20 | 93 |
| Lighter | 7 | 20 | 86 |
| Air conditioning fan | 2 | 30 | 89 |
| Climate control unit | 19 | 5 | 86 |
| Conditioner compressor | 13 | 7.5 | 89 |
| Cruise control | 5 | 10 | 86 |
| Heating of the diesel fuel filter
(JTD versions) |
23 | 30 | 89 |
| 5 | 40 | 89 | |
| Defrosting the exterior mirrors | 2 | 7.5 | 93 |
| Electrochromic driving mirror | 15 | 10 | 93 |
| Electronic injection control unit | 20 | 10 | 89 |
| 21 | 15 | 89 | |
| 22 | 20 | 89 | |
| Electronic injection system | 16 | 5 | 86 |
| Engine control unit | 18 | 7.5 | 89 |
| Engine cooling controller | 16 | 5 | 86 |
| Engine radiator fan | 4 | 60 | 89 |
| Engine radiator fan | 5 | 40 | 89 |
| EOBD system (socket) | 18 | 5 | 86 |
| Left windscreen
(ABI control unit) |
18 | 20 | 93 |
| Right windscreen RH
(ABI control unit) |
3 | 20 | 93 |
| LH electric front seat adjustment | 6 | 30 | 93 |
| Front right electric seat adjustment | 5 | 30 | 93 |
| Warming of the front seat on the left side | 9 | 10 | 93 |
| Front right seat heating | 8 | 10 | 93 |
| Fuel pump | 19 | 15 | 89 |
| Fuel pump relay coil
(engine box) |
16 | 5 | 86 |
| Glow plug (JTD versions) | 8 | 60 | 89 |
| Headlight washer (intermittent) | 12 | 20 | 86 |
| Horns | 11 | 15 | 89 |
| ICS system | 5 | 10 | 86 |
| 6 | 7.5 | 86 | |
| 7 | 20 | 86 | |
| 18 | 5 | 86 | |
| Instrument panel | 6 | 7.5 | 86 |
| 18 | 5 | 86 | |
| Navigator | 18 | 5 | 86 |
| Parking sensors (control unit) | 15 | 10 | 93 |
| Electrically operated windows
(LOCK indicator lamp) |
15 | 10 | 93 |
| Electric sunroof | 10 | 20 | 93 |
| Initial setting | 4 | – | 93 |
| 11 | – | 93 | |
| Rain sensor | 15 | 10 | 93 |
| Rear power socket | 16 | 20 | 93 |
| Left rear window (ABI control unit) | 14 | 20 | 93 |
| Right rear power window
(ABI control unit) |
17 | 20 | 93 |
| Rear window heating | 1 | 30 | 93 |
| T21, T22, T23 relay coil (trunk) | 3 | 5 | 86 |
| T24 relay coil (trunk) | 5 | 10 | 86 |
| Receiving remote control | 15 | 10 | 93 |
| Sound amplifier | 20 | 25 | 93 |
| Sound system | 4 | 15 | 86 |
| Steering wheel sound system controls. | 5 | 10 | 86 |
| Starter | 1 | 30 | 89 |
| Initial setting of the trailer | 12 | 10 | 93 |
| Windscreen heating | 7 | 15 | 93 |
| Wipers | 14 | 25 | 86 |