Operating Instructions
Fuses and relays
T0010210
Contents
Location ................................................................................................
General ................................................................................................
Electrical distributor unit, left-hand drive trucks ...............................
Electrical distributor unit, right-hand drive trucks ...........................
1
1
2
3
Fuses ...................................................................................................... 4
Main fuses ........................................................................................... 4
In the relay and fusebox ..................................................................... 5
In a separate fuse holder beside the relay and fusebox ................... 9
To the superstructure ......................................................................... 10
Relays ..................................................................................................
In the relay and fusebox ...................................................................
Beside the relay and fusebox ...........................................................
Under mug holder .............................................................................
Below the relay and fusebox ............................................................
For superstructure, in front of the passenger ...................................
11
11
12
12
13
13
Location
General
The fuses and relays for the truck are located under the cover in the middle of the
instrument panel. A number of relays are
located under the mug holder. Fuses and relays for the superstructure are located under
the panel, in front of the passenger.
To access fuses and relays: Tighten the
mug holder, slacken off the two screws and
lift off the cover.
Under the cover, there are labels which
show the location of the fuses and relays,
and what components they are relevant
to.
The ordinary exterior lighting of the truck
is controlled by a lighting control unit. This
contains control functions for each lighting
circuit. Fuses are no longer used for these
functions. If a circuit is broken, for
example, because of overloading or a shortcircuit, the driver will be informed by a
message in the instrument panel. The function is restored when the fault has been
corrected.
1
2
Location
Electrical distributor unit, left-hand drive trucks
T3014334
Under the cover of every electrical distributor unit is a decal
with information on the location of the fuses and relays and
what components they are relevant to.
1
Relay and fuseboxes with surrounding relays
2
Relays under mug holder
3
Fuses and relays for the superstructure, in front of the passenger
Location
Electrical distributor unit, right-hand drive trucks
T3014335
Under the cover of every electrical distributor unit is a decal
with information on the location of the fuses and relays and
what components they are relevant to.
1
Relay and fuseboxes with surrounding relays
2
Relays under mug holder
3
Fuses and relays for the superstructure, in front of the passenger
3
4
Fuses
Main fuses
Main fuses are located in a main fuse box
inside the battery box on the frame. The
four fuses are screwed into the fuse box using spring washers and nuts. It is important
that the nuts are tightened to the correct
torque. See table. If they are not tightened
enough, heat can be generated. Over tightening can cause deformation and cracking.
Warning! Use the correct tightening
torque. Do not forget the spring washers.
T3014566
Dimension
Tightening torque
M5
4.0 Nm +/- 5%
M8
20.0 Nm +/- 5%
M10
33.0 Nm +/- 5%
Normally the fuses last as long as the truck
without blowing. Should a fuse blow, the
truck should be put in to the workshop for
a check of the electrical system.
Size
Use
1
125 A
Pre-heating
2
200 A
Hydraulic bogie lift /
Body builder
3
125 A
Cab
4
40 A
Secondary voltage supply
to the lights
Fuses
In the relay and fusebox
The fuses in the central electrical unit are
blade fuses, two types are used. If a fuse in
the same fuse holder has to be changed frequently, the truck should be taken to the
workshop to check the electrical system.
Note! Switch off the current before changing a fuse. The fuse holder can burn out if
the current is switched on.
Warning! Always use the stipulated
size of fuse. Never use a higher rated
fuse.
5
6
Fuses
Blade fuses
Fuse
no:
Use:
Fuse
size:
F1
Free .........................................................................................................
10A
F2
Lighting, load space ...............................................................................
10A
F3
Load light, fifth wheel lighting ..............................................................
10A
F4
Electrically adjustable seat, cab tilt pump, load and fifth wheel lighting ...........................................................................................................
5A
F5
Instrumentation, (kl.30) ..........................................................................
5A
F6
Free .........................................................................................................
5A
F7
Vehicle control unit, Electronic start inhibitor ......................................
5A
F8
Instrumentation (kl.DR) .........................................................................
5A
F9
Range inhibitor, Area inhibitor (in gearbox) .........................................
5A
F10
Free .........................................................................................................
5A
F11
Control unit, gear selector ......................................................................
5A
F12
Control unit, transmission ......................................................................
10A
F13
Windscreen wipers .................................................................................
15A
F14
Cigarette lighter, lamp storage compartment centre section .................
10A
F15
Water separator, fuel filter heater, water drainage valve .......................
10A
F16
Differential lock, power take off ............................................................
5A
F17
Control unit exterior lighting .................................................................
5A
F18
Horn, solenoid valve for compressed air horn ......................................
10A
F19
Climate control unit ................................................................................
5A
F20
Central locking .......................................................................................
10A
F21
Fan, climate control unit ........................................................................
15A
F22
Interior lighting .......................................................................................
10A
F23
Air suspension ........................................................................................
5A
F24
Drier, parking heater ADR, heated door mirrors ..................................
10A
F25
Supply ABS/EBS trailer .........................................................................
20A
F26
Superstructure fuse box ..........................................................................
30A
Fuses
7
Fuse
no:
Use:
Fuse
size:
F27
Electric window lift, left hand side, electrically heated rear view mirrors ..........................................................................................................
20A
F28
ABS/EBS ................................................................................................
20A
F29
Coffee maker ..........................................................................................
30A
F30
Electric window lift, right hand side .....................................................
20A
F31
Parking heater .........................................................................................
20A
F32
Climate control unit ................................................................................
20A
F33
Electric cab tip ........................................................................................
30A
F34
Fuel filter heater .....................................................................................
30A
F35
Electrically adjustable seat .....................................................................
20A
F36
Free .........................................................................................................
30A
F37
Dynafleet .................................................................................................
5A
F38
Footboard lamps .....................................................................................
5A
F39
Electrically adjustable rear view mirrors ...............................................
5A
F40
Engine control unit .................................................................................
15A
F41
Solenoid valves on the engine, electric fuel pump ...............................
10A
F42
Pre-heating relay motor, electrically controlled cooling fan .................
5A
F43
Superstructure unit BBM .......................................................................
5A
F44
Voltage converter for radio/12 V socket ................................................
15A
F45
Voltage converter for 12V socket ..........................................................
15A
F46
Rotating beacon light .............................................................................
15A
F47
Free .........................................................................................................
15A
F48
ABS/EBS, switch EBS ...........................................................................
5A
F49
Air suspension/A-ride .............................................................................
3A
F50
Telephone ................................................................................................
5A
F51
Hydraulically steered axle ......................................................................
5A
F52
Pre-heating, overload relay, radio position ............................................
10A
F53
Illuminated sign on roof .........................................................................
10A
8
Fuses
Fuse
no:
Use:
Fuse
size:
F54
Dynafleet .................................................................................................
10A
F55
Air bag, seat belt tensioners ...................................................................
5A
F56
Free .........................................................................................................
5A
F57
Control unit, gear selector ......................................................................
3A
F58
D+ short-circuit relay, only ADR ..........................................................
5A
F59
Reversing camera ...................................................................................
5A
F60
Hydraulically steered axle ......................................................................
5A
F61
Retracting rear view mirrors, Japan .......................................................
5A
F62
Free .........................................................................................................
15A
F63
Free .........................................................................................................
10A
F64
Free .........................................................................................................
10A
F65
Central lubrication system ......................................................................
10A
F66
Sun roof ..................................................................................................
10A
F67
Bed lamps, reading lamps ......................................................................
10A
F68
Refrigerator .............................................................................................
10A
F69
12 Volt socket .........................................................................................
10A
F70
ABS/EBS trailer (kl.15) .........................................................................
5A
F71
Optional equipment ................................................................................
10A
F72
Height adjustment system, headlamps ...................................................
5A
F73
Hydraulically steered axle ......................................................................
5A
F74
Headlamp washer (high pressure) ..........................................................
15A
F75
Electrically heated seats .........................................................................
15A
F76
D+ short-circuit relay, only ADR ..........................................................
15A
Fuses
9
In a separate fuse holder beside the relay and fusebox
Blade fuses
Fuse
no:
Use:
Fuse
size:
F77
Gas discharge lamp, dipped beam, left-hand side ................................
15A
F77
Gas discharge lamp, dipped beam, right-hand side ..............................
15A
10
Fuses
To the superstructure
56 X. Fuses for superstructure
Use:
Fuse
size:
1
Kl.30, B+ ................................................................................................
15A
2
Kl.30, B+ ................................................................................................
15A
3
Kl.15, driving position ...........................................................................
15A
4
Kl.15, driving position ...........................................................................
15A
5
Kl.61, generator ......................................................................................
10A
6
Free .........................................................................................................
10A
56 P. Fuses for superstructure (options)
Use:
Fuse
size:
1
Kl.30, B+ ................................................................................................
15A
2
Kl.30, B+ ................................................................................................
15A
3
Kl.30, B+ ................................................................................................
15A
4
Kl.30, B+ ................................................................................................
15A
5
Free .........................................................................................................
10A
6
Free .........................................................................................................
10A
Note! Continual loading on fuses must not
exceed 80% of rated current. Fuses must be
replaced by original fuses if changed.
Relays
In the relay and fusebox
Location
Function:
1
Overload relay, radio position
2
Fuel injection
3
Starter motor
4
Overload relay, superstructure fuse box
5
Automatic transmission
6
Fan, climate control unit (certain vehicles)
7
Intermittent wipers
8
Area range gearbox
9
Interior lighting
10
Work light, turntable lighting
11
ECS (air suspension)
12
Not used
13
Alternator controlled
11
12
Relays
Beside the relay and fusebox
Location
Function:
14
Delay relay, bogie lift A-ride
15
Delay relay, bogie lift, A-ride with axle load limiter
16
Fuse holder for fuses 77 and 78
17
Diode unit, ADR vehicles only
18
Hydraulically steered axle, third axle locking, A-ride, with axle load limiter
19
Locking the third axle, with steering axle
20
D+ short-circuit (ADR only)
21
Electrically adjustable seats
22
Climate fan, 1st speed with parking heater on (certain vehicles)
Under mug holder
Location
Function:
23
Cab tilt
24
Central lubrication
25
Illuminated sign
26
Retracting rear view mirrors, Japan
27
Gas discharge lamp, dipped beam, left-hand side
28
Gas discharge lamp, dipped beam, right-hand side
29
Retracting rear view mirrors, Japan
30
Rotating beacon light
31
Snow plough lamp, left-hand side, dipped beam
32
Snow plough lamp, right-hand side, dipped beam
33
Snow plough lamp, left-hand side, full beam
34
Snow plough lamp, right-hand side, full beam
Relays
Below the relay and fusebox
Location
Function:
35
Headlamp, high-pressure washing
36
Receiver for remote central locking
For superstructure, in front of the passenger
Location
Function:
37
Parking lamps
38
Operating buttons, tipper trailer
39
Free, for superstructure
40
Free, for superstructure
41
Free, for superstructure
42
Spotlamp
43
External engine start
44
Brake application (reverse lock)
45
Free, for superstructure
46
Free, for superstructure
47
Free, for superstructure
13
14
Relays
Relays
15
Volvo Truck Corporation
Göteborg, Sweden
20 161013 English .01.2002
Printed in Sweden