Alfa Romeo 156 (2003-2006) – fuse diagram
Year of production: 2003, 2004, 2005, 2006.
Cigarette lighter fuse (power socket) in Alfa Romeo 156 (2003-2006). is fuse 9 in the fuse box.
Fuse and relays in the main fuse box

Relay | Description |
a | Dipped beam relay |
b | Relay for sunroof, seat heater, rear window power control, electric seat adjustment |

Fuses above the main fuse box

Fuses and relays accessible from the handy storage compartment

Fuse and relays in the engine compartment


Relay | Description |
a | Engine radiator fan 2nd speed relay (T.SPARK versions) |
b | Engine radiator cooling fan 1st speed relay |
c | Fuel pump relay |
d | Electronic injection relay |
e | A/C compressor relay |
f | Timing variator relay (1.6 T.SPARK only) or 2nd speed engine radiator fan relay (2.5 V6 24 V, JTD and JTD 16 V Multijet versions only) |
g | Fuel oil heater relay (Diesel versions only) |
For JTD 20v Multijet version

For diesel versions, depending on the installed options, a second bracket for the following fuses is attached to the rear bulkhead of the engine compartment.

Relay | Description | ||
a | MAXI-FUSE | 30A | Additional passenger compartment heater second level relay |
b | MAXI-FUSE | 30A | Additional passenger compartment heater first level relay |
Summary table of fuses
Lights | Fuse | Amps [A] | Location |
Left front side light | 7 | 10 | Main fuse box |
Right front side light | 6 | 10 | Main fuse box |
Left rear position light | 6 | 10 | Main fuse box |
Right tail light | 7 | 10 | Main fuse box |
Left dipped headlights / xenon headlights (optional) | 8 | 20 | Main fuse box |
Right-hand low beam / xenon lights (optional) | 4 | 20 | Main fuse box |
Left driving light | 2 | 20 | Main fuse box |
Right driving light | 1 | 10 | Main fuse box |
Cruise control (optional) | 13 | 10 | Main fuse box |
Left license plate light | 7 | 10 | Main fuse box |
Right license plate illumination | 6 | 10 | Main fuse box |
Reversing lights / sound system | 13 | 10 | Main fuse box |
Left rear fog light cover | 7 | 10 | Main fuse box |
Right rear fog light cover | 6 | 10 | Main fuse box |
Direction indicators – warning lights | 14 | 10 | Main fuse box |
Fog lights | 16 | 15 | Above the main fuse box |
Car interior and glove box lighting | 12 – 13 | 10 | Main fuse box |
BOSE HI-FI system | 9 | 25 | Above the main fuse box |
Description | Fuse | Amps [A] | Location |
Windshield wiper, windshield washer / Rear window wiper / rain sensor (optional) | 10 | 20 | 69 |
Horns | 11 | 20 | 69 |
GSM Box for Connect / Navigator – electronic warning system | 13 | 10 | 69 |
Electrically operated front windows | 5 | 30 | 69 |
Left rear power window | 4 | 20 | 71 |
Right rear power window | 5 | 20 | 71 |
Door locking system – trunk light | 3 | 20 | 69 |
Electric trunk opener | 7 | 30 | 71 |
Rear window heater | 15 | 30 | 69 |
Side mirror adjustment | 13 | 10 | 69 |
Defrosting side mirror | 15 | 30 | 69 |
Lighter / Scent Sensor | 9 | 15 | 69 |
Headlight washer | 1 | 20 | 72 |
Headlight alignment device | 4 | 10 | 69 |
Instrument cluster | 12 | 10 | 69 |
High beam indicator light | 2 | 10 | 69 |
Rear window heater warning light | 15 | 30 | 69 |
Sound system / diagnostic socket | 12 | 10 | 69 |
Electronic alarm system | 12 | 10 | 69 |
Additional electrical outlet in the trunk (Sportwagon versions) | 10 | 20 | 71 |
Remote control | 13 | 10 | 69 |
Controls lighting / stop lights | 3 | 10 | 71 |
Rear control light from side lights | 6 | 10 | 71 |
Seat heating / Sunroof / Electric seat adjustment | 8 | 30 | 71 |
Airbag system | 2 (*) | 10 (*) | 71 |
ABS system | 9 | 60 | 68 |
11 (*) | 10 (*) | 71 | |
Alfa Romeo CODE system | 13 | 7,5 | 71 |
Climate control system | 9 | 15 | 69 |
Engine radiator fan: | |||
First speed: | |||
– T.SPARK and JTS versions | 6 | 50 | 68 |
– diesel versions | 6 | 60 | 68 |
– 2.5 V6 24 volt versions. | 6 | 40 | 68 |
Second speed | |||
– T.SPARK and JTS versions | 7 | 30 | 68 |
– diesel versions | 7 | 40 | 68 |
– 2.5 V6 24 volt versions. | 7 | 40 | 68 |
Passenger compartment fan (gasoline versions) | 1 | 40 | 68 |
Passenger compartment fan (diesel versions) | 4 | 40 | 68 |
Electronic ignition and injection system | 13 | 7,5 | 71 |
14 | 15 | 71 | |
15 | 15 | 71 | |
5 | 30 | 68 | |
Glow plugs and fuel oil filter resistances (Diesel versions) | 8 | 70 | 68 |
Fuel oil heater (JTD, JTD 16V Multijet versions) | H. | 25 | 74 |
Services disabled with launch | 1 | 7,5 | 71 |
Alfa Romeo CODE / Injection system battery supply | 12 | 7,5 | 71 |
(+15) key-controlled service power (ignition switch) | 2 | 30 | 68 |
General service supplies (gasoline versions) | 4 | 80 | 68 |
General service supplies (diesel versions) | 1 | 80 | 68 |
General provision of services | 3 | 70 | 68 |
Additional heater (diesel version only) | 10 | 70 | 68 |
Oil pump supply (Selespeed versions only) | 10 | 30 | 68 |
Selespeed transmission (2.0 JTS version) | 7 | 30 | 68 |
8 | 20 | 68 | |
Automatic transmission (2.5 V6 24 V version) | 7 | 40 | 68 |
8 | 20 | 68 |