Volvo XC90 1 generation was produced in 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014 with petrol engines of 2.5, 2.9 and 4.4 liters. During this time, the model was restyled and updated several times. In our material you will find information about the location of all electronic control units, a detailed description of the fuses and relays of the Volvo XC90 with block diagrams, photographs and their locations. Mark the fuses responsible for the cigarette lighter and fuel pump.

Location

General layout of electronic control units

Designation

1Additional equipment control unit – right side of luggage compartment
2Air conditioning electronic control unit – behind the air conditioning control panel
3Air Conditioner/Heater Fan Control Unit – Next to Fan Motor
4Antenna block, telephone
5Antenna Signal Booster – Ceiling Panel
6Shock sensor, left
7Shock sensor, right
8Curtain airbag igniter, left.
9Curtain airbag igniter. Right.
10Side Impact Sensor Assembly – Driver Side B-Pillar
11Side impact sensor, rear left – behind the support on the rear seat cushion
12Side Impact Sensor Assembly – Passenger Side B-Pillar
13Side impact sensor, rear right – behind the support on the rear seat cushion
14Vehicle tilt sensor (anti-theft system)
15Anti-theft alarm horn – behind the front right wheel arch trim
16Volume change sensor (anti-theft system) – ceiling panel
17Anti-theft alarm sensor – in multifunctional control unit 3
18Audio output amplifier
19Additional heater control unit, if installed
20Battery pack – under the hollow luggage compartments
21Cruise control unit integrated into the engine control unit.
22Diagnostic Link Connector (DLC)
23Differential lock control unit – on the rear differential
24Passenger door electrical equipment control unit – in the door — functions: Central locking, open or not tightly closed door indicators, electric drive/heater for rear-view mirrors on the doors, electric drive for windows, lighting lamps in door mirrors, outside temperature
25Driver’s door electrical equipment control unit – in the door – functions: Central locking, open or not tightly closed door indicators, electric drive/heater of rear-view mirrors on the doors, electric drive of windows, lighting lamps in door mirrors, outside temperature
26Cooling system fan electric motor control unit
27Fuse/Relay Box, Engine Compartment 1
28Engine compartment fuse/relay box 2 – under engine compartment fuse/relay box 1
29Fuse/Relay Box, Instrument Panel 1
30Fuse/Relay Box, Instrument Panel 2
31Fuse/Relay Box, Luggage Compartment 1
32Fuse/Relay Box in Luggage Compartment 2 – Next to Battery
33Heater Electronic Control Unit – Behind Heater Controls
34Horn – behind the front bumper
35Immobilizer – in the electronic engine control unit
36Ring antenna of the immobilizer – near the ignition switch
37Direction indicator/hazard warning relay – in multifunction control unit1
38Instrument cluster control unit – instrument panel
39Lighting control unit – behind the headlight switch
40Multifunction control unit 1 – connected to fuse/relay block 2 of the instrument panel – functions:Anti-theft alarm system, central locking, electric windows, windshield wiper/washer, headlight wiper/washer, power steering, immobilizer, headlights, direction indicators/hazard warning lights, horn, front/rear side lights, starter, heated seats, headlight range control, fuel pump, glove compartment light
41Multifunction Control Unit 2 – Connected by Fuse/Relay Box, Luggage Compartment 1 – Functions: Anti-Theft Alarm, Central Locking, Tail Lights, Fuel Level, Interior Lights, Rear Window Wiper/Washer, Rear Window Defroster, Auxiliary Power Sockets – Rear, Parking Assist, Fuel Filter Heater – Diesel
42Multifunctional control unit 3-functions: Central locking, anti-theft system, sunroof, rain sensor, interior lights, seat belt reminder
43Navigation system control unit – under the left seat
44Ambient air temperature sensor – in the right door mirror
45Parking system control unit
46Power steering relay
47Rain sensor (if installed)
48Relay for door locking system against accidental opening, left – in the door
49Relay for door locking system against accidental opening, right, – in the door
50Driver’s seat electric control unit – under seat
51Occupant sensor in seat cushion
52SRS Electronic Control Unit
53Steering Wheel Position Sensor Unit – Connected to Fuse/Relay Box 2 under the dash
54Steering wheel electrical control unit – behind the steering wheel – functions: Audio system, cruise control, horn, turn signals, windshield wiper/washer, rear window wiper/washer, low/high beam headlights
55Sunlight sensor
56Sunroof control unit – in multifunctional control unit 3
57Electronic control unit of the gearbox
59Telematics unit – functions: Audio system, telephone
60Telephone control unit, “hands-free”
61Telephone interface control unit – behind the air conditioning control panel

Blocks in the cabin

Fuse box 1

At the left end of the instrument panel, behind the protective cover, is the first block of fuses.

Check the purpose of the elements with your diagrams printed on the back of the protective cover.

130A Air conditioning fan
230A Audio system (amplifiers)
325A Driver’s seat with electric drive
425A Power Passenger Seat
525A Control unit left, front door
625A Control unit right, front door
7Backup socket
815A Radio, CD player, RSE system
910A RTI Display, RTI MMM Module
105A OBDII, Light Switch (LSM), Steering Angle Sensor (SAS), Steering Wheel Module (SWM)
117.5A Ignition switch, SRS system, Engine control module ECM (V8, 6-cyl. petrol) Passenger side SRS disablement (PACOS), Electronic start immobilizer (IMMO), Transmission control module TCM (V8, diesel, 6-cyl. petrol)
1210A General Lighting, Ceiling (RCM), Upper Electronic Control Module (UEM)
1315A Sunroof
145A Telephone
15-38Spare sockets

Fuse box 2

Another fuse box is installed under the instrument panel.

To access it, you need to unscrew the protection fastener.

115A Seat heating, right side
215A Seat heating, left side
315A Sound signal
4Backup socket
510A Infotainment system
6Backup socket
7Backup socket
85A Security Alarm Siren
95A Brake light contacts, power supply
1010A Combined instrument panel (DIM), air conditioning system (CCM), parking heater, electric driver’s seat
1115A 12V socket (cigarette lighter) , front seat, rear seat and refrigerator
12Backup socket
13Backup socket
14Backup socket
155A ABS, STC/DSTC
1610A Electronic Power Steering (ECPS), Active Bi-Xenon (ABS), Headlight Beam Height Adjustment
177.5A Fog light, front left
187.5A Fog light, front right
19Backup socket
205A Coolant pump (V8)
2110A Communication Control Module (TOM), Reverse Gear Lock (M66)
2210A High beam headlights, left
2310A High beam headlights, right
24Backup socket
25Backup socket
26Backup socket
27Backup socket
285A Power Passenger Seat
297.5A Fuel Pump
305A BUS
31Backup socket
32Backup socket
3320A Vacuum Pump
3415A Washer fluid pump
35Backup socket
36Backup socket

Fuse number 11 is responsible for the operation of the cigarette lighter.

Relay block

This unit is installed under the dashboard in early Volvo XC90 models. Also known as the Central Electronic Module CEM. It looks something like this:

1—
2Auxiliary ignition circuits
3Main ignition circuits
4—
5—
6Electric window lifter – closing, left rear door
7Electric window lifter – opening, left rear door
8disabling rear window lifter motors, locking doors from accidental opening – rear doors
9high beam headlights
10Clearance lamps
11Daytime lighting system
12low beam headlights
13Electric window relay – close, right rear door
14Electric window relay – open, right rear door
15Relay 2 auxiliary ignition circuits
16Transmission control system
17—
18—
19—
20—
21Telematics
22—
23—
24—
25—
26—
27Fog lights
28Fuel pump relay
29—
30Fuel leakage control system relay
31Jumper – left turn signals
32Jumper – Right direction indicators
33—
34Jumper – low beam headlights
35—

Block under the hood

On the left side of the engine compartment, next to the pillar, there is a block with fuses and relays. There are several possible versions of this block with fuses and relays.

Option 1

Photo

130A ABS
230A ABS
335A High Pressure Headlamp Washers
425A Parking heater (optional)
520A Additional lights (optional)
635A Starter Relay
725A Windscreen Wipers
815A Fuel Pump Fuse
915A Transmission Control Module (TCM), (V8, diesel, 6-cyl. gasoline)
1020A Ignition coils (petrol), engine control module (ECM), injector valves, (diesel)
1110A Fuel Pedal Position Sensor (APP), AC Compressor, Fan, Electronic Unit
125/15A Engine Control Module (ECM) (petrol), injectors (petrol), air flow meter (petrol); air flow meter (diesel)
1310/15A Throttle Control Module (V8), V1S (6-cyl. gasoline); Throttle Control Module, Solenoid Valve, SWIRL (Air-Mixture Valve), Fuel Pressure Regulator (Diesel)
1410/20A Lambda probe (petrol); lambda probe (diesel)
1510/15A Crankcase ventilation heater, solenoid valves, leak diagnostics (5-cyl. petrol); Crankcase ventilation heater (V8, 6-cyl. petrol), AC clutch (V8, 6-cyl. petrol), solenoid valves, leak diagnostics (V8, 6-cyl. petrol), ECM, (V8, 6-cyl. petrol), air flow meter (V8), glow plugs (diesel)
1620A Low beam headlights, left
1720A Low beam headlights, right
18Backup socket
195A Engine Control Module (ECM), Power, Engine Relay
2015A Side lights
21Backup socket

Relay diagram

  • FMA1 – Starter
  • FMA2 – Glow Plug Automatic Relay, Not I5D
  • FMA3 – Engine Management System Main Relay
  • FMI2 – Relay, climate control
  • FST1 – Windshield Wiper Relay, Low/High Speed
  • FST2 – Windscreen wiper interval relay
  • FST3 – Relay, High Pressure Headlamp Washer Motor

Option 2

Photo – example

F125A Additional heater control unit
F220A Additional equipment
F315A Engine Management – Bi-fuel, Vacuum Pump (2002)
F420A Heated Oxygen Sensors, Engine Management (Diesel)
F515A Engine Management System (Petrol)
F6
F7—
F810A Accelerator Pedal Position Sensor, A/C Compressor Clutch Relay, Fuse/Relay Box Cooling Fan
F915A Sound signal
F1010A Rear Window Washer Pump Motor
F1120A Engine Management, Glow Plugs, Heating/Air Conditioning, Crankcase Ventilation Heater (Diesel)
F125A Brake lights
F1325A Windscreen Wiper
F1430A Anti-lock brake system ABS/ESP (DST C)
F1525A Headlamp Washer/Wiper System
F1615A Windscreen Washer Pump Motor
F1710A Right headlight – low beam (xenon)
F1810A Left headlight – low beam xenon)
F1930A Anti-lock braking system ABS/ESP (DSTC)
F2015A Left headlight – high beam
F2115A Right headlight – high beam
F2225A Starter
F235A Engine Management System Relay, Engine Control Module (ECM)
F24—

Relay diagram


  1. Engine management system
  2. Glow plugs
  3. Starter
  4. Intermittent windshield wiper operation
  5. Headlight cleaner/washer
  7. Air conditioning compressor electromagnetic clutch
  8. Beep (signal)
  9. Windshield washer pump
  10. Windshield wiper motor
  11. Rear window washer pump motor

Additional protective elements are installed on the back side of the block.

F160A Glow Plugs
F260A Passenger Compartment End Block Circuits: Fuses (F5-7), (F25-27), (F32-33)
F360A Passenger Compartment End Block Circuits: Fuses (F3-4), (F8-11), (F16-19), (F34-38)
F460A Passenger compartment end block circuits: fuses (F1), (F12-15), (F20-24)
F5Empty
F6Empty
F7Empty
F860A Cooling Fan Motor

Blocks in the trunk

In the luggage compartment, on the left behind the passenger compartment protection, there may be 2 more blocks with fuses and relays.

Main block

Option 1

110A Reversing light
220A Side lights, fog lights, luggage compartment light, number plate light, brake lights
315A Accessories (AEM)
4Backup socket
510A Electronic Equipment REM
67.5A Rear Seat Entertainment System RSE (Accessory)
715A Wiring (30 Power)
815A Electrical Socket in Luggage Compartment
920A Rear door, right: window lift, window lift lock
1020A Rear door, left: window lift, window lift lock
11Backup socket
12Backup socket
1315A Diesel Filter Heater
1415A Subwoofer, Rear Air Conditioning (A/C)
15Backup socket
16Backup socket
175A Additional audio equipment
18Backup socket
1915A Rear Cleaner
2020A Wiring (15 Power)
21Backup socket
22Backup socket
237.5A AWD
24Backup socket
25Backup socket
265A Parking Assistance
2730A Main Fuse: Trailer Harness, Park Assist, AWD
2815A Central Locking (PCL)
2925A Trailer lighting left: side lights, direction indicators
3025A Trailer lighting, right: brake light, rear fog light, direction indicators
3140A Main fuse
32Backup socket
33Backup socket
34Backup socket
35Backup socket
36Backup socket
3720A Electrically heated rear window
38Electrically heated rear window

Option 2

Photo example

F110A Multifunction Control Unit 2, Interior Lighting – Luggage Compartment Lighting
F210A Rear fog lights
F315A Brake lights
F410A Reversing lights
F55A Rear Window Defogger, Trailer Electrical Equipment Socket Power Relay
F610A Rear door opening drive
F715A Additional Power Socket – Luggage Compartment
F815A Central locking-locking rear side doors/rear door hatch/fuel filler cap
F920A Trailer Electrical Socket
F105A Antenna Signal Booster
F1115A Additional equipment
F1215A Rear Window Wiper Motor
F1315A Audio system, air conditioning/heating system-rear
F147.5A Brake lights
F1520A Trailer Electrical Socket
F16Reserve
F177.5A Fuel filter heater (Diesel), differential lock control unit
F1815A Fuel filter heater (diesel)
1—
2—
3—
4Rear Window Wiper Intermittent Relay
5Relay of two-component fuel supply system Bi-fuel
6A/C Electronic Control Unit Relay – Rear A/C
7Rear Door Actuator Relay
8Not used(2002)
9Fuel filler neck lock actuator relay – opening
10—
11Right rear door central locking relay – unlocking
12—
13—
14Rear Window Wiper Motor Relay
15—
16—
17—
18—
19Jumper – brake lights
20Jumper – rear dimensions
21Jumper – rear dimensions
22Jumper connector for power supply of additional equipment in the luggage compartment
23Jumper – Fog lights
24—
25Rear Fog Light Relay – Trailer
26Rear Fog Light Relay
27Brake light relay
28Reverse Light Relay
29Central lock relay, rear – double lock
30Left Rear Door Central Locking Relay – Unlocking
31Fuel filler neck lock actuator relay – closing, central locking relay – rear doors – closing (2002)
32Fuel filter heater relay (diesel)
33—
34Rear Window Defogger Relay
35Audio system
36Trailer Electrical Equipment Socket Power Relay

Additional block

Installed next to the main one.

  1. 5A Rear seat heating and front seat massage relay
  2. 15A Rear driver seat heating
  3. 15A Rear seat heating, passenger side
  4. 10A Ventilation/massage front seats
  5. Reserve
  6. Reserve

Some models have a power fuse block installed on the positive terminal of the battery.