Jonathan Yarden Mar 25, 2021 · 5 min. read
In this article you will find a description of fuses and relays Volvo,
with photos of block diagrams and their locations.
Highlighted the cigarette lighter fuse (as the most popular thing people look for).
Get tips on blown fuses, replacing a fuse, and more.
Year of production: 1994
Fuse box in instrument panel
The fuses (and relays) are located in the central electrical unit behind the ashtray in the center console.
Position | Function | Ampere rating [A] |
1 | Fuel pump (main), engine control systems | 25 |
2 | Central locking, hazard warning flashers, headlight flashers | 25 |
3 | Power seats | 30 |
4 | Brake lights | 15 |
5 | Glove compartment light, clock, audio system, interior light, trunk light, door open warning, antenna, vanity mirror lights | 15 |
6 | Blower â climate control unit | 30 |
7 | Front fog lights | 30 |
8 | Electrically operated windows | 30 |
9 | Warning light, seat belt, turn signals, heated front seats, electrically-operated windows, shift-lock | 15 |
10 | Heated rear window power sunroof heated side-view mirrors | 30 |
11 | Fuel pump (tank), heated oxygen sensor | 15 |
12 | Back-up lights, cruise control, disengagement of 4th gear on automatic transmission | 15 |
13 | Spare | â |
14 | Electrically-operated side view mirrors, cigarette lighter, radio, rear wiper/washer (wagon), ambient temperature sensor | 15 |
15 | Horn, windshield wash/wipe, power seats | 25 |
16 | Blower â climate control unit | 30 |
17 | High beam (left) | 15 |
18 | High beam (right) | 15 |
19 | Low beam (left), relay â fog light(s) | 15 |
20 | Low beam (right) | 15 |
21 | LH parking lights (front and rear), license plate light, light for: ash tray, heater, control panel, switch for heated rear window | 15 |
22 | RH parking lights (front and rear), center console compartment, lighting for: heated seat switch, gear selector panel, rear ash tray | 15 |
23 | Heated front seats | 25 |
24 | ABS | 15 |
25 | Rear fog light | 25 |
26 | Audio system | 15 |
R | Spare fuses | â |
Volvo 940 â fuse box diagram
Number | Description |
1/1 | Battery |
2/2 | Relay, front foglights |
2/3 | Regulator DIM-DIP |
2/4 | Intermittent relay, windshield wipers |
2/5 | Relay, seat belt reminder/ignition key warning |
2/6 | Bypass relay 151 |
2/7 | Central locking relay |
2/8 | Overdrive relay |
2/10 | Power unit ECC |
2/11 | Relay, engine cooling fan |
2/12 | Relay, radio interference suppression |
2/13 | Relay, fuel injection (MFI) |
2/14 | Relay, glowplug mechanism |
2/15 | Relay, exhaust gas temperature sensor |
2/16 | Tailgate intennittent wiper relay |
2/23 | Relay, fuel injection |
2/34 | Relay, front foglights |
2/36 | Headlight flasher |
2/37 | Headlight relay |
2/38 | Timer relay, exhaust gas recirculation {EGR) |
2/45 | Relay, P-shift lock |
2/50 | Bypass relay, high beam |
3/1 | Ignition lock |
3/2 | Light switch |
3/4 | Cruise control operation |
3/5 | Switch, tum signal/high¡low beam |
3/6 | Switch, hazard warning flashers |
3/7 | Foglight switch. |
3/8-1 | Switch, heated rear window |
3/8-2 | Switch with timer relay, heated rear window/door mirrors |
3/9 | Brake light switch |
3/10 | Backup (reversing) light switch |
3/12 | Switch, windshield wash/wipe |
3/13 | Switch, tailgate wash/wipe |
3/14 | Switch, lock button |
3/15 | Power window switch, driverâs door for driverâs door |
3/16 | Power window switch, driverâs door for driverâs side rear door |
3/17 | Power window switch, driverâs door for passengerâs side front |
3/18 | Power window switch, driverâs door for passengerâs side rear |
3/19 | Power window switch, driverâs side rear |
3/20 | Power window switch, passengerâs side front |
3/21 | Power window switch, passengerâs side rear |
3/22 | Switch for rear power window lifts |
3/23 | Switch for power door mirror, driverâs side |
3/24 | Switch for power door mirror, passengerâs side |
3/25 | Switch for power sunroof |
3/26 | Operating module, driverâs scat |
3/27 | Operating module, passengerâs seat |
3/28 | Switch for heated driverâs scat |
3/29 | Switch for heated passengerâs seat |
3/31 | Door switch, driverâs door |
3/32 | Door switch, passengerâs side front |
3/33 | Door switch, driverâs side rear |
3/34 | Door switch, passengerâs side rear |
3/35 | Door switch, tailgate (5-door estate) |
3/36 | Switch, glove compartment |
3/37 | Hom contacts |
3/38 | Switch, brake pedal |
3/39 | Switch, clutch pedal |
3/40 | Start inhibit switch, automatic transmission |
3/42-1 | Switch on transmission |
3/42-2 | Oil preSSUTc sensor, kick-down va}ve |
3/43 | Switch in gear lever |
3/44 | Seat belt lock, driverâs seat |
3/47 | Parking brake switch |
3/50 | Thronle position (TP) switch |
3/52 | Switch for power antenna |
3/59 | Beam width control |
3/66 | Idle air conrro1 (lAC) control, EGR |
3/70 | Rheostat setting |
3/78 | Lock unit, tailgate |
4/1 | Overheating protector, driverâs seat |
4/2 | Overheating protector, passengerâs scat |
4/3 | Conrrol module, cruise control |
4/4 | Rheostat |
4/5 | Safety circuit, SRS (airbag) |
4/6 | Control module, ECC |
4/9 | Sensor module, SRS (airbag) |
4/10 | Control module EZ-K (Dl) system |
4/15 | Power amplifier, EZ-K (Dl) system |
4/16 | Control module ABS |
4/23 | Control module LH-jetronic 2.4 (MFI) system |
4/25 | Control module Regina (MFI) system |
4/26 | Power amplifier/ignition coil REX-I (DI) system |
4/29 | Control module driverâs seat |
4/40 | A/C contmls, MCC |
4/42 | Control module REX-I (Dl) system |
4/43 | Heater controls |
5/1 | Combined instrument |
5/3 | Ambient temperature sensor |
6/1 | Windshield wiper motor |
6/2 | Washer motor, from |
6/3 | Right headlight wiper motor |
6/4 | Left headlight wiper motor |
6/5 | Central locking motor, passengerâs side front |
6/6 | Central locking motor, passengerâs side rear |
6/7 | Central locking motor, driverâs side rear |
6/8 | Central locking motor, tailgate |
6/9 | Window lift mOlor driverâs door |
6/10 | Window lift motor driverâs side rear |
6/11 | Window lift motor passengerâs side front |
6/12 | Window lift motor passengerâs side rear |
6/13 | Power door mirror. driverâs side |
6/14 | Power door mirror. passengerâs side |
6/15 | Motor. po¡wcr sunroof |
6/16 | Motor, driverâs seat backrest |
6/17 | Motor, up-down, front edge of driverâs seat |
6/18 | Motor, up-down, rear edge of driverâs seat |
6/19 | Motor, fore-aft, driverâs seat |
6/24 | Vacuum pump, cruise control |
6/25 | Starter motor |
6/26 | Generator |
6/27 | Servo motor, throulc control |
6/28 | Cabin fan motor |
6/29 | Engine co.oling fan |
6/30 | Washer motor, tailgate |
6/31 | Fuel pump |
6/32 | Tailgate wiper motor |
6/33-1 | Fuel level sensor/primer pump |
6/33-2 | Fucllcvcl sensor/pump |
6/34 | Power antenna |
6/35 | Parking heater |
6/36 | Central locking motor, driverâs side front |
6/38 | Actuator. left |
6/39 | Acruator, right |
7/4 | Brake fluid level sensor |
7/5 | Washer fluid level sensor |
7/6 | Oil pressure sensor |
7/7 | Engine coolant temperature (ECT) sensor |
7/9 | Engine co-olant temperature (ECT) sensor, ECC |
7/10 | Cabin temperature sensor |
7/11 | Ambient temperature sensor |
7/12 | Solar sensor |
7/14 | Thermostat, engine cooling fan |
7/15 | Heated oxygen sensor (H02S) |
7/16 | Engine coolant temperature (ECT) sensor, fuel/ignition (MFI/Dl) system |
7/17 | Mass air flow (MAF) sensor |
7/24 | Knock sensor (KS) |
7/25 | Engine speed (RPM) sensor |
7/26 | Pressure s.ensor, EGR |
7/28 | Engine coolant temperature (ECT)Â sensor, diesel |
7/30 | Pressure sensor for charge pressure, turbodiesel |
7/31 | Sensor, ABS left front |
7/32 | Sensor, ABS right front |
7/33 | Sensor, vehicle speed (VSS) and ABS |
7/34 | Thermoelement, three-way catalytic converter (fWC) |
7/37 | Temperature sensor, EGR |
7/38 | Low-speed pressure sensor, engine cooling fan |
7/40 | High-speed pressure sensor, engine cooling fan |
7/41 | High-pres.sure sensor, NC |
7/43 | Thermostat, driverâs seat |
7/44 | Thermostat, passengerâs seat |
7/47 | PTC-resisâlor, air pre-heating |
7/50 | Pressure sensor, intake manifold |
7/52 | Temperature sensor, intake air |
7/53 | Low-pressure sensor, A/C |
7/69 | Ambient temperature sensor |
7/75 | Bulb malfunction indicator |
8/1 | Operating solenoid, overdrive |
8/2 | Solenoids, ECC |
8/3 | Sole110id coupling, A/C |
8/5 | Idle air control (lAC) valve |
8/6-9 | Injection valves |
8/13 | Fuel valve, diesel |
8/15 | Hydraulic unit, ABS |
8/17 | Converter, EGR |
8/24 | 3-way valve, EGR |
8/30 | Steering wheel module, SRS (airbag) |
8/33 | Igniter for left seat belt tensioner |
8/34 | Igniter for right seat belt tensioner |
8/36 | Solenoid P-shift lock |
8/42 | Solenoid, pulsed secondary air injection (PAIR) |
9/1 | Cigar lighter |
9/2 | Heated rear window |
9/3 | Heater element, driverâs seat baclcrest |
9/4 | Heater element, passengerâs seat backrest |
9/5 | Heater element, driverâs seat cushion |
9/6 | Heater elemem, passengerâs seat cushion |
10/5 | Left front foglight |
10/6 | Right front foglight |
10/11 | Left front parking light |
10/12 | Right front parking light |
10/13 | Left front tum signal |
10/14 | Right front turn signal |
10/15 | Left tum signal repeater (not USNCDN) |
10/16 | Right turn signal repeater (not USNCDN) |
10/19 | Extra brake light |
10/20 | Left number plate light |
10/21 | Right number plate light |
10/22 | Roof light |
10/24 | Trunk light |
10/25 | Roof light, load area (5-door) |
10/29 | Glove compartment light |
10/30 | Door-0pen warning light, driverâs door |
10/31 | Door-open warning light, front passengerâs side |
10/32 | Door-open warning light, rear driverâs side |
10/33 | Door-0pen warning light, rear passengerâs side |
10/36 | Control panel lighting |
10/38 | Ashtray lighting, rear |
10/39 | Switch lighting, seat heater |
10/40 | Gear selector lighting |
10/43 | Right brake light |
10/44 | Right parking light. rear |
10/45 | Right parking/tail light |
10/46 | Right rear foglight |
10/47 | Bulb, right rear turn signal |
10/48 | Right backup (reversing) light |
10/50 | Left brake light |
10/51 | Left parking light, rear |
10/52 | Left parking/tail light |
10/53 | Left rear foglight |
10/54 | Bulb, left rear tum signal |
10/55 | Left backup (reversing) light |
10/64 | Right high beam |
10/65 | Right extra high beam |
10/66 | Right low beam |
10/68 | Left high beam |
10/69 | Left extra high beam |
10/70 | Left low beam |
10/72 | Ashtray lighting, front |
10/74 | Indicator light. exhaust gas temperature |
10/75 | Indicator light, charge pressure, turbodiesel |
10/76 | Indicator light, diesel preheating |
10/77 | Indicator light, SRS (airbag) |
10/78 | Indicator light, seat belt |
10/79 | Indicator light, overdrive (auto.)/Gear selection indicator |
10/80 | Indicator light, overdrive (man.) |
10/82 | Indicator light, ABS |
10/83 | Indicator light, parking brake |
10/84 | Indicator light, brake warning |
10/85 | Indicator light, high beam |
10/86 | Indicator light, oil pressure |
10/87 | Indicator light, charge |
10/88 | Indicator light, bulb failure |
10/89 | Indicator light, rear fog lights |
10/90 | Indicator light, washer fluid level |
10/91 | Service indicator |
10/92 | Indicator light, trailer |
10/93 | Indicator light, malfunction indicator lamp (MIL) |
10/94 | Indicator light, right turn signal |
10/95 | Indicator light, left turn signal |
10/96 | Instrument lighting |
10/103 | Switch lighting, heated rear window/door mirrors |
10/104 | Switch lighting |
10/114 | Vanity mirror lighting, passengerâs side |
10/115 | Vanity mirror lighting, driverâs side |
11/1-26 | Fuses |
11/41 | Fuse, combined instrument |
15/1 | Positive terminal |
15/2 | 30-rail in el. distribution unit |
15/9 | Fuse-protected 15-rail in el. distribution unit |
16/1 | Radio |
16/2 | Amplifier |
16/3 | Loudspeaker, right front door |
16/4 | Loudspeaker, left front door |
16/5 | Loudspeaker, right rear door |
16/6 | Loudspeaker, left rear door |
16/7 | Loudspeaker, instrument panel, right side |
16/8 | Loudspeaker, instrument panel, left side |
16/9 | Antenna |
16/10 | Hom 1 |
16/11 | Hom 2 |
16/15 | CD-autochanger |
16/17 | Loudspeaker, rear parcel shelf, left side/left 0-post |
16/18 | Loudspeaker, rear parcel shelf, right side/right D-post |
17/1 | Service data link connector for staner motor operation |
17/11 | OBD data link connector |
17/14 | Data link connector for diagnosis of power seat |
18/1 | Bridge connector 1 COMPONENT IDENTIFICATION |
18/2 | Bridge connector 2 |
19/1 | Engine coolant temperature (ECT) gauge |
19/2 | Rev. counter (RPM gauge) |
19/3 | Speedometer |
19/4 | Clock |
19/5 | Fuel gauge |
20/1 | Ignition coil |
20/2 | Distributor |
20/3-6 | Spark plugs |
20/9 | Glowplugs |
20/15 | Series resistance |
20/18 | Cabin fan resistor |
31/1 | Ground connector right front wing |
31/2 | Ground connector left front wing |
31/3 | Ground connector body (ground connection, battery-body) |
31/4 | Ground connector engine (ground connection, battery-engine) |
31/5 | Ground connector for heated rear window (4-door) |
31/6 | Ground connector left A-post |
31/9 | Ground connector at parking brake lever |
31/10 | Ground connector right A-post |
31/11 | Ground connector left taillight |
31/12 | Ground connector right tail light |
31/13 | Ground connector in load area |
31/16 | Ground connector at windshield wiper motor |
31/17 | Ground connector at power sunroof motor |
31/26 | Ground connector, generator |
31/28 | Ground connector at overdrive solenoid |
31/31 | Ground connection rail incl. distribution unit |
31/32 | Ground connector on engine (power ground) |
31/33 | Ground connector on engine (signal ground) |
31/60 | Ground connector on engine (diesel) |
31/63 | Ground connector at steering column bracket |
31/64 | Ground connector engine cooling fan |
C1 | Connector, 53-pin, Instrument panel harness â Door sill harness |
C2 | Connector, 53-pin, Instrumnent panel harness â Left wheel housing harness |
C3 | Connector, 53-pin, Instrument panel harness â Right wheel housing harness |
C5 | Connector, left A-post, 2-pin |
C6 | Connector. at el. dist. unit. 4-pin |
C7 | Connector, at steering colwnn, 8-pin |
C9 | Connector, at centre console, 10-pin |
C11 | Connector. at el. dist. unit, 4-pin |
C12 | Connector, at el. dist. unit, 2-pin |
C14 | Connector, at el. dist. unit. 2-pin |
C15 | Connector, left A-post, 4-pin |
C19 | Connector, at instrument panel, 2-pin |
C20 | Connector. under gear lever carrier. 1-pin or 2-pin |
C21 | Connector, left B-post, 4-pin |
C22 | Connector. at tailgate. 6-pin (5-door) |
C23 | Connector, at tailgate, 2-pin (5-door) |
C24 | Connector, at extra brake light, 2-pin |
C25 | Connector, tailgate, 2-pin, (5-door) |
C27 | Connector, tailgate, 1-pin, (5-door) |
C29 | Connector, at drive(s seat, 4-pin |
C31 | Connector. at passengerâs scat, 2-pin |
C32 | Connector, at driverâs scat, 2-pin |
C33 | Connector, under driverâs scat, 2-pin |
C34 | Connector, under passengerâs scat, 2-pin |
C36 | Connector, under passengerâs scat, 2-pin |
C37 | Connector, under driverâs scat, 2-pin |
C39 | Connector. at driverâs seat, 4-pin |
C40 | Connector, at passengerâs seat, 4-pin |
C41 | Connector, under driverâs seat, 6-pin |
C42 | Connector, under driverâs seat, 2-pin |
C50 | Connector. 8-pin, Left wheel housing harness â Engine harness |
C51 | Connector, 8-pin, Left wheel housing harness â Engine harness |
C54 | Connector. 8-pin, Right wheel housing harness â Engine harness |
C55 | Connector, 8-pin, Right wheel housing harness Engine harness |
C62 | Connector, at windshield wiper motor, 4-pin |
C63 | Connector, at left headlight. 3-pin |
C64 | Connector, at right headlight, 3-pin |
C65 | Connector, driverâs door, 6-pin |
C66 | Connector, passengerâs door. 6-pin |
C72 | Connector, driverâs door, 2-pin |
C73 | Connector, passengerâs door. 2-pin |
C74 | Connector, rear door driverâs side, 2-pin |
C75 | Connector, rear door passengerâs side, 2-pin |
C76 | Connector, right A-post, 2-pin |
C79 | Connector, driverâs door, 4-pin |
C84 | Connector, driverâs door, 2-pin |
C85 | Connector, rear door driverâs side, 2-pin |
C86 | Connector, passengerâs door, 2-pin |
C87 | Connector, rear door passengerâs side, 2-pin |
C88 | Connector, at switch, 5-pin |
C89 | Connector. at sunroof motor, 2-pin |
C91 | Connector, at eL dist. unit, 2-pin |
C92 | Connector. behind steering wheel, 2-pin |
C93 | Connector. left rear wheel housing, 4-pin |
C98 | Connector. at power antenna. 4-pin |
C100 | Connector. left wheel housing, 2-pin |
C101 | Connector, right wheel housing. 2-pin |
C102 | Connector. at el. dist. unit, 2-pin |
C105 | Connector on bridge connector 1, 2-pin |
C111 | Connector. at thennoelemcnt, 2-pin |
C117 | Connector, 2-pin, Left wheel housing harness . Engine harness |
C121 | Coupling reel, steering wheel, SRS (airbag) |
C123 | Connector to bridge connector 2, 2-pin |
C132 | Connector, 8-pin, Left wheel housing harness â Engine harness |
C137 | Connector, 4-pin, Right wheel housing harness â Engine harness |
C139 | Connector, at gear selector, 4-pin |
C143 | Connector, at A-post passengerâs side, 24-pin |
C144 | Connector, at A-post driverâs side, 24-pin |
C149 | Connector, at B-post passengerâs side, 11-pin |
C150 | Connector, at B-post driverâs side, 11-pin |
C154 | Connector, 3-pin or ! -pin, Right wheel housing harness -engine cooling fan harness |
C155 | Connector, left A-post, 8-pin |
C156 | Connector. at firewall, 3-pin |
C157 | Connector, at el. dist. unit, 4-pin |
C158 | Connector. at driverâs scat, 4-pin |
C160 | Connector, at inst.rument panel, 6-pin |
C161 | Connector. at ftrewall, 1-pin |
C162 | Connector, left B-post, 2-pin |
C163 | Connector. at ftrewall. 2-pin (diesel) |
C166 | Connector, at el. dist. unit, 8-pin |
C300 | Connector, at ftrewall, 4-pin (for heated oxygen sensor (H02S)) |
C301 | Connector, at instrument panel for vanity mirror, passengerâs side |
C302 | Connector, at instrument panel for vanity mirror, driverâs side |
D1 | Connector. at instrument panel, 4-pin |
D2 | Connector, alann, 8-pin at steering column |
D3 | Connector, alann, 4-pin at steering column |
D4 | Connector, alarm. 2-pin in engine compartment, left front |
D5 | Connector, towing hook. 10-pin (not USA/CON) |
D7 | Connector, ambient temperature sensor, 6-pin |
WARNING:Â Terminal and harness assignments for individual connectors will vary depending on vehicle equipment level, model, and market.
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