Volvo FH 13 Fuses and Relays

Volvo FH 13 represents the 2nd generation of the truck family, which was produced in 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011 and 2012 with various design options. During this time, the model was restyled. In our material, you will find a description of the fuses and relays of the Volvo FH 13 with block diagrams, photo examples of design and their locations. Note the fuse responsible for the cigarette lighter.

The purpose of the fuses and relays may differ from the one shown and depends on the year of manufacture, modification and level of electrical equipment of your car. Check the information with your diagrams on the block cover.

Blocks in the cabin

1. Fuse and relay box
2. Relay Block #1
3. Relay Block #2
4. 35. High pressure headlight washer / 36. Adaptive cruise control (ACC)

Fuse and relay box

To gain access, you need to remove the protective cover.

The block itself will look something like this.

No.	A	Designation
1	10A	TPM (Tire Pressure Monitoring)
2	10A	Luggage compartment lamp
3	10A	Headlight, 5th wheel light
4	5A	Adj. seat, cab tilt, load/fifth wheel light, interior light
5	5A	Instrumentation, (class 30)
6	5A	Air dryer
7	5A	Car ECU, immobilizer
8	5A	Instruments, TPM (Tire Pressure Monitoring), Tachograph
9	5A	Range and Area Inhibitors, Dynafleet
10	5A	NOx sensor, road toll system
11	5A	Gear selector ECU
12	10A	Gearbox ECU/Retarder
13	15A	Windshield wipers
14	10A	Cigarette lighter, storage lamp in the center part
15	10A	Water separator heater and water in fuel drain
16	5A	Differential lock, power take-off
17	5A	LCM management
18	10A	Horn, Solenoid Valve for Air Horn
19	5A	Climate control unit, FMS gateway
20	10A	Parking heater control
21	15A	Fan, climate control unit
22	10A	Indoor lighting fixtures
23	5A	Air suspension
24	10A	Air dryer, ADR parking heater, heated electric mirrors
25	20A	Delivery of trailer ABS/EBS
26	30A	Body Builder Fuse Box
27	20A	Electric window lift left, electric mirrors with heating
28	20A	Delivery of ABS/EBS truck
29	30A	Coffee machine
30	20A	Electric window, right side
31	20A	Main fuse for fuses 95-97
32	20A	Climate control unit
33	30A	Email cabin tilt
34	20A	High Power Amplifier
35	20A	El. adjustable seat
36	20A	Trailer chain reverse lights
37	5A	Telephone, Dynafleet
38	5A	Lifting lights
39	5A	Electrically adjustable rear view mirrors
40	15A	Engine ECU
41	10A	Engine electromagnetic valves
42	5A	Cooling fan clutch, engine preheating relay
43	5A	BBM (Body Module), Man. Main Switch BBOX-EF
44	15A	Voltage converter 1, radio, rear view camera
45	15A	Voltage converter 2, 12 volt socket
46	10A	Flashing beacon
47	15A	ACC
48	5A	ABS/EBS
49	3A	Air suspension /A-ride/J-ride
50	5A	Telephone
51	5A	Hydraulic steering axle
52	10A	Functions in key position “R”, engine preheating
53	10A	Light signals
54	10A	Dynafleet, FMS Gateway
55	5A	SRS airbag, seat belt tensioner
56		–
57	3A	Gear selector ECU/retarder
58	5A	Generator control, ADR battery master switch
59	5A	Rear view camera
60	5A	Hydraulic steering axle
61	5A	Folding Rear View Mirror Bracket Japan Security Alarm Volvo Communication
62	15A	Fuel heater, thermal line
63	10A	Alcolock System
64	10A	Road toll system
65	10A	Central lubrication system
66	10A	Sunroof
67	10A	Reading lamps, night lights
68	10A	Fridge
69	5A	12 volt socket
70	10A	Delivery of trailer ABS/EBS, (class 15)
71	5A	Additional equipment
72	10A	Headlight leveling system
73	5A	Side lift indicator
74	15A	High pressure headlight washer
75	15A	Electric heated seats and electric ventilated seat
76	5A	ADR, D+ Short Circuit Relay, Instrument Panel Fan
95	10A	Central door lock
96	5A	Security alarm
97	15A	Autonomous heater
98	10A
99	10A
100	10A
Relay
1		Start switch, radio position
2		EMS (Engine Management System)
3		Starter motor
4		Body builder fuse box (cl. 15)
5		I-Shift/Powertronic/retarder
6		Fan climate control unit
7		Intermittent wiper
8		Gearbox Zone Inhibitor
9		Indoor lighting fixtures
10		Fifth wheel, work light
11		Air suspension
12		Reversing light, trailer
13		The generator is controlled
14		Time Delay Relay, Trolley Lift, A-ride
15		Time relay, bogie lift, A-ride, with axle load limiter
16		Rain sensor, high speed wiper
17		–
18		Trolley lift, A-ride, with axle load limiter
20		Man. Main switch BBOX-EF
22		24V, socket

Relay block 1

No.	Purpose
23	Cabin tilt
24	Central lubrication
25	Light sign
26	Folding Rear View Mirror Bracket (Japan)
27	El. adjustable seat
28	Air conditioning fan, 1st speed (from parking heater)
29	Folding Rear View Mirror Bracket (Japan)
30	Flashing beacon
31	Fuel heater, thermal line
32	–
33	–
34	–

Relay block 2

No.	Purpose
Left section
1	15 –
2	15 –
3	15 –
4	15 –
5	10 –
6	10 –
Right section
1	15 –
2	15 –
3	15 –
4	15 –
5	10 –
6	10 –
Relay
37	Parking lights Bodybuilder prep, swap body lights Body prep, plough light, spotlights Bodybuilder prep Body prep, body swap Body prep, spotlights Body prep, outside start Additional reversing light, truck Tailgate indicator Body prep, dual speed Body prep, dual speed
38	Bodybuilder preparation, replacement body lights
39	Body preparation, plow light, spotlights
40	Preparing the body
41	Body preparation, body replacement
42	Body preparation, spotlights
43	Body preparation, external start
44	Additional reversing light, truck
45	Side lift indicator
	Body preparation, double speed
46	Body preparation, double speed
Additional elements
89	Tachograph
90	12V Converter, ABS Trailer/Info Module (1007C)
91	Tachograph, ADR
93	Main fuse for fuses 95-97
94	AdBlue system

Another block with fuses, made in the form of fusible links, can be installed next to the battery.

Block near the battery

No.	A	Purpose
1	200A	Body
2	100A	FRC Driver’s Cabin, Fuse and Relay Center
3	30A	FCIOM Front Chassis Control
4	30A	Chassis Control Center CCIOM
5	30A	RCIOM Rear Chassis Control
6	30A	FCIOM Front Chassis Control
7	30A	Chassis Control Center CCIOM
8	30A	RCIOM Rear Chassis Control
9	30A	Front Axle Steering FAS
10	40A	Parking cooler PCCU
11	23A	ACM aftertreatment system control unit
12	23A	Auxiliary axis control