The Alfa Romeo 156 is a compact executive car produced by the Italian automaker from 1997 to 2007. The model debuted in 1997 at the Frankfurt Motor Show and was manufactured in two body styles: saloon (sedan) and station wagon (Sportwagon). The vehicle underwent two facelifts: first in 2002, and again in 2003. This article provides detailed fuse box diagrams and relay assignments for the Alfa Romeo 156 (Type 932) covering model years 1997 through 2007.
Here you will find component location diagrams and fuse box layouts. Fuses for the “Cigarette Lighter” and “Fuel Pump” circuits are highlighted in bold.
In the Engine Compartment
Three distribution units are located in the engine compartment:
- Relay box near the battery
- Main engine compartment fuse box
- High-current power fuse panel on the battery positive terminal
Relay Box
Relay assignment schematic on the box cover.
| Diagram | |
|---|---|
|
|
| No. | Description |
| 1 | Radiator cooling fan – 2nd speed (Twin Spark with climate control) |
| 2 | Radiator cooling fan – 1st speed |
| 3 | Fuel pump relay |
| 4 | Engine Management System (ECU) |
| 5 | Air conditioning compressor clutch |
| 6 | Variable timing actuator (1.6 Twin Spark) |
| 7 | Fuel heater (Diesel models) |
Fuse Box
Accessing the engine compartment fuse box.
| Diagram | ||
|---|---|---|
Fuse layout diagram. |
||
| No. | Circuit Protected | Rating (A) |
| F1 | Interior fuse box main power supply | 80 |
| F2 | Ignition switch | 30 |
| F3 | Battery supply | 70 |
| F4 | Climate control / heater blower motor | 40 |
| F5 | Engine management system (ECU) | 30 |
| F6 | Radiator cooling fan motor (Twin Spark without A/C / V6) | 40 |
| F7 | Automatic transmission, radiator cooling fan motor (Twin Spark with A/C / V6 24V), Selespeed automated transmission (2.0 Twin Spark) | 30 |
| F8 | Selespeed automated transmission (2.0 Twin Spark) | 20 |
| F9 | Anti-lock Braking System (ABS) (without ESP) | 50 |
| F10 | Auxiliary cabin heater (Diesel) | 70 |
On diesel models, depending on optional equipment, an additional relay unit is located on the engine compartment rear bulkhead:
- A – Level 2 relay for 30A auxiliary cabin heater
- B – Level 1 relay for 30A auxiliary cabin heater
In the Passenger Compartment
Located under the dashboard on the driver’s side near the steering column. To access the distribution box, release catches B, remove access trim panel A, and loosen retaining screw C.
Main Fuse Box
Overview of the Alfa Romeo 156 passenger compartment fuse box.
| Diagram | ||
|---|---|---|
|
||
| No. | Description | Rating (A) |
| F1 | Right headlight – high beam | 10 |
| F2 | High beam indicator light, left headlight – high beam | 10 |
| F3 | Luggage compartment light, central locking system | 20 |
| F4 | Headlight range control, right headlight – low beam | 10 |
| F5 | Front power windows | 30 |
| F6 | Left brake light, rear left sidelight, left license plate light, rear right fog light, front right sidelight | 10 |
| F7 | Left license plate light, rear left fog light, front left sidelight, right brake light, rear right sidelight | 10 |
| F8 | Left headlight – low beam | 10 |
| F9 | Alfa Romeo 156 cigarette lighter fuse; climate control / heater system | 15 |
| F10 | Windscreen wipers and washer system | 20 |
| F11 | Horn | 20 |
| F12 | Anti-theft system, anti-lock braking system (ABS) with ESP, audio system, instrument cluster, interior lighting | 10 |
| F13 | Anti-lock braking system (ABS), central locking, power mirrors, power windows, instrument panel backlighting, reversing lights, high-level brake light | 10 |
| F14 | Hazard warning lights | 10 |
| F15 | Heated door mirrors, heated rear window | 30 |
| 1 | Ignition auxiliary relay 1 | |
| 2 | Heated rear window relay | |
| 3 | Horn relay | |
Auxiliary Fuse Box #1
An auxiliary fuse board is located above the main unit. Its configuration varies depending on the vehicle model year.
| Diagram | ||
|---|---|---|
| No. | Description | Rating (A) |
| Models produced from 02/1999 onward | ||
|
||
| F1 | Power mirrors, illuminated power window switches, glove box illumination, direction indicators, heated rear window, climate control system, ignition auxiliary relay | 7.5 |
| F2 | Supplemental Restraint System (Airbag) | 10 |
| F3 | Anti-lock braking system (ABS), instrument cluster, warning lights, switch backlighting | 10 |
| F4 | Rear left power window motor | 20 |
| F5 | Rear right power window motor | 20 |
| F6 | Electric sunroof | 25 |
| F7 | Boot lid / tailgate release actuator | 30 |
| F8 | Heated seats | 30 |
| F9 | — | |
| F10 | Anti-lock braking system (ABS) | 10 |
| F11 | Engine management system, immobilizer | - |
| F12 | Engine management system, immobilizer | - |
| F13 | Engine management system | 15 |
| F14 | Engine management system | 15 |
| F15 | Front fog lights | 15 |
| Models produced up to 02/1999 | ||
|
||
| F1 | Supplemental Restraint System (Airbag), anti-lock braking system (ABS) | 15 |
| F2 | Engine management system, immobilizer | 7.5 |
| F3 | Heated seats | 30 |
| F4 | Engine management system | 10 |
| F5 | Engine management system | 15 |
| F6 | Electric sunroof | 25 |
| F7 | Engine management system, immobilizer | 7.5 |
| F8 | Anti-lock braking system (ABS), instrument cluster, warning lights, switch backlighting | 10 |
| F9 | Power door mirrors, heated seats, heated rear window, direction indicators, electric sunroof | 7.5 |
| F10 | Supplemental Restraint System (Airbag) | 10 |
Auxiliary Fuse Box #2
An additional fuse block is located underneath the glove compartment behind an access panel. To access it, remove cover A.
| Diagram | ||
|---|---|---|
|
||
| F1 | Headlight washers (from 03/1999) | 20 |
| F2 | Headlight washers (up to 02/1999) | 20 |
| F3 | Rear left power window motor (up to 02/1999) | 20 |
| F4 | Rear right power window motor (up to 02/1999) | 20 |
| 2 | Low beam (dipped beam) relay | - |
| 3 | Headlight washer delay relay | - |
| 4 | Ignition auxiliary relay 2 | - |