2008 Alfa Romeo 166 Owner handbook (in English)

184
– Change the bulb (C-fig. 77) which
is pressure-fitted.
– Re-position the screen inserting the
two fastening pins.
– Re-install the light inserting it in the
correct position firstly on one side (D-
fig. 76) and then pushing on the other
until the tab clicks.DOOR LIGHTS
To replace the bulb (Type A, 5W):
– Remove the light pushing with a
screwdriver on the tab (A-fig. 78).
– Press on the side of the screen (B-
fig. 79) in correspondence with the two
fastening pins and turn it.– Change the bulb (C-fig. 79) which
is pressure-fitted.
– Re-position the screen inserting the
two fastening pins.
– Re-install the light inserting it firstly
on one side (D-fig. 78) and then push-
ing on the other until the tab clicks.
628PGS
fig. 79
629PGSm
fig. 77
502PGSm627PGSm
fig. 78

185
– Fit the new bulb locking it between
the two contacts.
– Lower the protection cover.
– Refit the light by locking it in its seat.LUGGAGE COMPARTMENT
LIGHT
To replace the bulb (Type C, 10W):
– Remove the light levering on point
(A- fig. 80) with a screwdriver.– Lift the protection cover (B- fig.
81).
– Remove the snap-fitted bulb (C- fig.
82).
A0D0085m
fig. 80
A0D0086m
fig. 81
A0D0087m
fig. 82

186 IN THE EVENT OF
A BURNT FUSE
OR RELAY
GENERALITIES(fig. 83)
When an electric device is no longer
working, check that its fuse is intact.
A- Intact fuse
B- Fuse with damaged filament.
Remove the fuse to be replaced using
the pincer (C) on the fusebox.
Replace the fuse with another of the
same rating and colour.Before replacing a fuse
check that the key has
been removed from the
ignition and that all the services
are switched off and/or disen-
gaged.
Never replace a dam-
aged fuse with anything
other than an intact
fuse.
Never replace a fuse
with another with a
higher amp rating, DANGER OF
WARNING
3290CAm
fig. 83
If a fuse blows again con-
tact Alfa Romeo Autho-
rized Services. The systems and de-
vices protected by fuses are in
listed in the tables on next pages.
WARNING

187
FUSES AND RELAYS IN THE
CONTROL UNIT
The fuses for the main devices are
housed in a control unit under the dash-
board, to the left of the steering column.
Access to it is gained slackening the
knob (A-fig. 84) and lowering the pan-
el (B).
The graphic symbols which distinguish
the main electric component correspond-
ing to each fuse are given on a label on
the inner wall of the panel.In the upper part of the control unit
there is a pincer (C-fig. 85) for remov-
ing fuses.
At the sides of the control unit there are
some spare fuses (C-fig. 86); after re-
placing a fuse you are advised to replen-
ish the stock of fuses when they are
used.
The systems and devices protected by
fuses are in listed in the tables on next
pages.The circuits operated by relays are the
following (fig. 86):
A- Switch discharge relay
B- Headlight washer timer.
511bPGSm
fig. 85
511aPGSm
fig. 84
A0D0145m
fig. 86

188
FUSES AND RELAYS IN
ENGINE BAY
The fuses and relays in the engine bay
are housed:
– In a box set next to the left side pan-
el (fig. 88).
– On a bracket set behind the left
headlight (fig. 91).To gain access to the box, remove the
cover (A-fig. 87), releasing it from the
retaining clips.
The devices protected by the fuses in
the engine bay are listed in the tables on
next pages.IMPORTANTThe arrangement of the
relays may vary depending on the ver-
sions and markets. In the event of a sus-
pected anomaly, contact Alfa Romeo Au-
thorized Services.
A0D0093m
fig. 87
A0D0094m
fig. 88 fig. 89
A0D0095m

189
Circuits operated by relays are the fol-
lowing (fig. 89):
A.Dipped beam headlight
B.Climate control fan
C.Horn
D.Front fog light
F.. Petrol versions (single fan): engine
cooling radiator (high speed)
JTD versions (two-fan): engine cooling
radiator (high speed)
G.Conditioner compressor
H.Petrol versions: engine cooling radia-
tor (low speed)
JTD versions (two-fan): engine cooling
radiator (high speed)L.Fuel pump
M.Electronic injection main relay
N.Starter motor
P.Diesel filter warming (JTD versions)
JTD versions (two-fan): engine cooling
radiator (low speed)
To gain access to relays on the bracket
set behind the left headlight (fig. 91),
remove the cover (A-fig. 90) after
turning the fastening pins (B).Circuits operated by relays are the fol-
lowing (fig. 91):
– Brown base relay: additional heater
(JTD versions)
– Black base relay: engine cooling radi-
ator relay, high speed (JTD versions).
A0D0096m
fig. 90
A0D0110m
fig. 91

190
FUSES AND RELAYS IN THE
BOOT
Fuses and relays are housed in the
right-hand side of the boot are housed in
a box, in the recess closed by cover (A-
fig. 92).
To open the cover turn the knob (B).
The devices protected by the fuses in
the boot are listed in the tables on next
pages.IMPORTANTThe arrangement of the
relays may vary depending on the ver-
sions and markets. In the event of a sus-
pected anomaly, contact Alfa Romeo Au-
thorized Services.Circuits operated by relays are the fol-
lowing (fig. 93):
A.Air mixing actuator, climate control
unit, additional heater control (JTD ver-
sions)
B.Rearscreen heating relay
C.Seat warming control, elec-
trochromic driving mirror, sun visor light,
rain sensor, parking sensor control unit,
door mirror control light, remote control
receiver, alarm system control unit, dri-
ver's power window control LOCK warn-
ing light
D.Windscreen heating, door mirror de-
frosting
E.Front seat warming, rear current
socket, front seat electric adjustment,
powered sunroof
F.Direction indicators, trailer presetting
518PGS
fig. 93
A0D0097m
A0D0111m
fig. 92

191
System/Component Fuse no. Ampere Location
ABI control unit 13 10A fig. 86
ABI control unit – Central locking 19 20A fig. 93
ABI control unit – Front LH power window 18 20Afig. 93
ABI control unit – Front RH power window 3 20A fig. 93
ABI control unit – Rear LH power window 14 20Afig. 93
ABI control unit – Rear RH power window 17 20Afig. 93
ABS control unit 9 5A fig. 86
7 40A fig. 89
3 40A fig. 89
Additional heater (JTD versions) 17 20A fig. 89
13 10A fig. 93
Alarm system (control unit) 12 10A fig. 93
15 10A fig. 93
Alfa Romeo Code System 20 5A fig. 86
16 5A fig. 86
Cell phone (handset) 18 5A fig. 86
5 10A fig. 86
Central locking (ABI control unit) 19 20A fig. 93
Cigar lighter 7 20A fig. 86
Climate control fan 2 30A fig. 89
Climate control unit 19 5A fig. 86
External lights Fuse no. Ampere Location
Brake lights (switch) 9 5A fig. 861 15A fig. 86
Direction indicators 12 10A fig. 93
External lights (control) 5 10A fig. 86
Front fog lights 16 15A fig. 89
Headlights and headlight position
sensor (gas discharge headlights) 6 7.5A fig. 86
IGE control unit:
- brake light switch 1 15A fig. 86
- brake lights 9 5A fig. 86
- headlight spot 11 15A fig. 86
- left side lights 17 10A fig. 86
- rear light units 15 10A fig. 86
- right side lights 8 10A fig. 86
Left dipped beam headlight 12 15A fig. 89
Reversing lights (only versions with
manual gearbox) 13 10A fig. 86
Right dipped beam headlight 10 15A fig. 89
Internal lights Fuse no. Ampere Location
Dashboard light dimmer 5 10A fig. 86
Door mirror control light 15 10A fig. 93
Glovebox light 5 10A fig. 86
Seat warming control light 15 10A fig. 93
Sun visor lights 15 10A fig. 93