1998-2007 Alfa Romeo 166 Fuse Box Diagram

06.07.2022 (US:07.06.22), Category: Alfa Romeo / 166

Fuse Location (1998-2003)

This model is fitted with two junction units: a main junction unit (1) located underneath the dashboard to the left of the steering column and an auxiliary junction unit (2) positioned in the engine compartment.

Fuse Location (2003-2007)

This model is fitted with three junction units: one (1) located underneath the dashboard to the left of the steering column, one (2) located in the engine compartment and a third (3) in the boot. In addition, the power supplies coming from the battery are protected by MAXIFUSES located on the actual battery.

Passenger Compartment Fuse Box

Access to it is gained slackening the knob (A) and lowering the panel (B).



No.
A
Function
1 15 Brake Lights, IGE Control Unit, Brake Depressed Light Control Signal, Control Panel, Direction Indicators (Steering Column Switch Unit), Exterior Lights Control
2 10 Air Bag Control Unit, Gearshift Lever
3 5 '03-'07: Sun Roof, Rear Socket, Seats
? Fuel Pump
4 15 Radio
5 10 Mobile Phone, Glove Compartment Light, Cruise Control, Gear Lever Panel (CAE), Light Dimmer, Door Opening Receiver, Heated, Fold-Down Door Mirrors, Antitheft Control Unit, Switch On Console (C.M.), Compressor Relay Coil, Symbols (Switches/Buttons), I.C.S. System, Sound System Controls on Steering Wheel
6 7.5 '03-'07: Control Panel, Control Lighting, Headlights and Headlight Position Sensor (Gas Discharge Headlights), I.C.S. System
5 '98-'03: Climate Control Fan Relay Coil
7 10 Front Current Socket (Cigar Lighter), I.C.S. System
8 10 Direction Indicators and Hazard Warning Lights, Right Side Lights
9 5 '03-'07: Control Lighting, Brake Lights Switch, IGE Control Unit, ABS
5 '98-'03: Electrochromic Mirror, Rain Sensor, Preparation for Telepass, Relay Coil for Seat Heat Pad Control, Signal to Front Electric Window Control Unit, Signal to Rear Electric Window Control Unit, Climate System Controls, Rear Electric Window Switch Inhibition Light
10 5 CAE Control Unit, Electronic Automatic Gearbox (Control Unit, Sensors and Gearshift Lever)
11 15 '03-'07: IGE Control Unit, Headlight Spot
20 '98-'03: IGE Control Unit
12 20 Headlamp Washer
13 10 '03-'07: Sun Roof, ABI Control Unit, Electronic Automatic Gearbox, Reversing Lights (only Versions with Manual Gearbox)
15 '98-'03: Sun Roof, Reversing Light Signal for Electrochromic Mirror
14 25 Windscreen Wash/Wiper
15 10 '03-'07: IGE Control Unit, Rear Light Units
25 '98-'03: Motor for Right/Left Front Electric Windows
16 5 Alfa Romeo Code System, Electronic Injection System, Engine Cooling Control Unit, Compressor Relay, Electronic Automatic Gearbox, Fuel Pump Relay Coil (Engine Bay Box)
17 10 '03-'07: IGE Control Unit, Left Side Lights
10 '98-'03: Transmission Lever Panel (CAE), Passegner Compartment Courtesy Light, Door Lights, Boot Light, Glove Compartment Light, Light Dimmer, Climate Control System Control Unit, Antitheft Control Unit, Remote Control Receiver, Diagnostic Socket
18 5 Instrument Panel, I.C.S. System, Preparation for Mobile Phone, EOBD System (Diagnostic Socket), Navigator
19 5 '03-'07: Climate Control System Control Unit
25 '98-'03: Central Locking Motor, Additional Current Socket
20 5 Alfa Romeo Code System- Injection (Petrol)
Relay
R1 Ignition Discharge
R2 '98-'03: Direction Indicators/Hazard Warning Lights Flasher
R3 Headlamp Washer Intermittent

Engine Compartment Fuse Box (1998-2003)

No.
A
Function
1 10 Right Main Beam Headlamp
2 10 Left Main Beam Headlamp
3 15 Fog Light
4 15 Horns
5 10 Air Conditioning Compressor
6 10 Left Dipped Headlamp
7 10 Right Dipped Headlamp
8 50 High Speed Radiator Fan
9 50 Low Speed Radiator Fan
Relay
R1 Dipped Beam Headlamps
R2 Horns
R3 Air Conditioning Compressor
R4 Main Beam Headlamps
R5 Fog Light
R6 High Speed Radiator Fan
R7 Low Speed Radiator Fan

Additional Fuses (1998-2003)

No.
A
Function
1 80 JTD: Plug Preheating Control Unit
2 30 Ignition Coils, Fuel Injection Main Relay, Fuel Pump Relay, Engine Management Control Unit, Fuel Injection Control Unit Supply Relay, Fuel Injection Services Supply Fuse
3 30 JTD: Additional Heater
4 15 JTD: Diesel Pre-Heating
5 30 Starter
7 60 ABS
8 40 '01-'03: Radiator Fan (2.4 JTD 10v - ???)
    
9 30 Vehicle Interior Fan 
10 5 CAE Supply 
11 10 ABS
12 7.5 JTD: Engine Management Control Unit
13 20 '02-'03: Cigar Lighter

Luggage Compartment Fuses (1998-2003)

No.
A
Function
1 40 Heated Rear Window
2 25 Fuel Flap Opening 
3 20 Boot Opening 
4 30 Left Seat Adjustment 
5 20 Seat Heating 
6 30 Right Seat Adjustment 
7 15 Trailer
8 25 Rear Electric Windows 
near with Battery    
- 125 Main Fuse
150 '99-03 (2.4 JTD 6M): Main Fuse
- 60 Luggage Fuses
ACC 30 Ignition Switch
Centr 60 Fuse: "8", "10", "11", "12", "15", "17", "18", "19", "20", Ignition Discharge Relay, Vehicle Interior Fan Fuse
- 15 Radio Amplifier

Luggage Compartment Fuse Box (2003-2007)



No.
A
Function
54 25 HIFI Amplifier
55 20 Sun-Roof
56 20 Driver's (LH) Side Front Window
57 10 Driver's (LH) Heated Seat
58 -  -
59 7.5 Mirror Demist
60 20 Passenger (RH) Side Front Window
20 Rear Current Socket
61 20 Left Rear Electric Window
62 20 Right Rear Electric Window
63 20 Central Locking, Boot Release
64 30 Heated Rear Window
65 10 JTD: Additional Heater
66 10 Anti-Theft Device and Light Blinker, Diretction Indicators, Trailer Presetting
67 10 Passenger (RH) Heated Seat
68 15 Windscreen Demisting
20 Passenger (RH) Side Front Window
69 20 Rear Current Socket
15 Windscreen Heating
77 30 Driver's (LH) Seat Movement
78 10 Interior Lights, Rain Sensor, Mirror Adjustment, Seat Warming Control Light, Sun Vision Lights, Alarm System Control Unit, Electrochromic Driving Mirror, Parking Sensors Control Unit, Remote Control Receiver
79 30 Passenger (RH) Seat Movement
80 -  -
Relay
R21 Sun Roof, Rear Socket
R22 Windscreen and Mirror Demisting
R23 Heated Rear Window
R24 Ignition Discharge
R25 Climate Control System Control Unit
R26 Lights Blinker

Engine Compartment Fuse Box (2003-2007)

 



No.
A
Function
1 50 JTD: Glow Plugs
60 JTD: Glow Plugs
2 40 ABS
3 20 Ignition Switch
30 Starter Motor
4 40 ABS
5 10 CAE Ignition Lock
20 Electronic Automatic Gearbox (3.0 V6 24V Sportronic Version)
6 30 Engine Cooling Fan (Low Speed)
40 Engine Cooling Fan (Low Speed)
7 60 Engine Cooling Fan (High Speed)
8 30 Climate Control Fan
9 15 Electronic Automatic Gearbox - Sportronic Versions (Control Unit, Sensors and Gearshift Lever)
10 15 Horns
11 15 Electronic Injection Control Unit, Various Auxiliary Services I.E., Diesel Filter (JTD)
14 15 Right Main Beam Headlamp
15 15 Left Main Beam Headlamp, Headlamp Alignment
16 -  -
17 10 Electronic Injection Control Unit
18 7.5 Engine Control Unit, I.E. Services, CAE
19 7.5 Conditioner Compressor
20 30 JTD: Diesel Filter Heating
21 15 Fuel Pump
22 20 Electronic Injection Control Unit
23 20 JTD: Additional Heater
24 -  -
30 15 Front Fog Lights
Relay
R2 High Beam
R3 Horn
R5 Compressor
R6 Radiator Fan 1st Speed
R7 Radiator Fan 2st Speed
R8 Climate Control System
R9 Fuel Injection Main
R10 Fuel Pump
R14 Fog Lamp
R17 CAE
R19 Heated Diesel Filter
R20 Starter Inhibitor

Engine Compartment Fuse Box No.2 (2003-2007)

No.
A
Function
4 70 CPL
5 70 CVB
6 -
7 150 CVM

Additional Heater Relay, Cooling Fan Relay (JTD - 2003-2007)

To gain access to relays on the bracket set behind the left headlight, remove the cover (A) after turning the fastening pins (B).

Brown Relay: Additional Heater
Black Relay: Engine Cooling Radiator (High Speed)

Fuse Box Diagram Alfa Romeo 166 - 2.0 TS, 2.0 V6 TB, 2.5 V6, 3.0 V6, 3.2 V6 and Diesel 2.4 JTD & JTD M-Jet (1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007)