


CITROËN C3 I
Below you will find interactive and original diagrams for CITROËN C3 I.
Total Fuses
32
Most Common
15A (12)
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Select Fuse Box:
Interactive 3D Diagram
Selected Fuse
| No. | Amp | Circuit |
|---|---|---|
| F1 | 10A | Diesel engine preheating unit - Diesel water sensor - Speed sensor - Reverse lights - ECU (Automatic transmission, SensoDrive type transmission) |
| F2 | 15A | Fuel module (fuel pump) |
| F3 | 10A | Electronic control units (ECU) (ABS system, ESP system) |
| F4 | 10A | ECU (fuel injection system, power steering system) - Sensors (diesel engine coolant level, cruise control, brake lights, clutch) - SensoDrive transmission and automatic transmission relays - Additional heating system unit |
| F5 | 10A | Horn – automatic transmission control unit – engine control unit (ECU) |
| F6 | 15A | Fog lights |
| F7 | 20A | Glass headlight washer |
| F8 | 20A | Engine control unit - Fuel injection ECU |
| F9 | 15A | Left low beam headlamp - Headlight level adjustment |
| F10 | 15A | Right low beam headlamp |
| F11 | 10A | Left high beam headlight |
| F12 | 10A | Right high beam headlight |
| F13 | 15A | Horn (beep) |
| F14 | 10A | Glass washers |
| F15 | 15A | Engine control system devices (ignition coil, solenoid valve, oxygen sensor, fuel injection system) - Fuel sump - Diesel fuel heater |
| F16 | 30A | Air pump |
| F17 | 30A | Windshield wiper |
| F18 | 30A40A | Electric fan |
Selected Fuse
Original Documentation & Assignments
Engine compartment
Diagram
| No. | Amp | Description |
|---|---|---|
| F1 | 10A | Diesel engine preheating unit - Diesel water sensor - Speed sensor - Reverse lights - ECU (Automatic transmission, SensoDrive type transmission) |
| F2 | 15A | Fuel module (fuel pump) |
| F3 | 10A | Electronic control units (ECU) (ABS system, ESP system) |
| F4 | 10A | ECU (fuel injection system, power steering system) - Sensors (diesel engine coolant level, cruise control, brake lights, clutch) - SensoDrive transmission and automatic transmission relays - Additional heating system unit |
| F5 | 10A | Horn – automatic transmission control unit – engine control unit (ECU) |
| F6 | 15A | Fog lights |
| F7 | 20A | Glass headlight washer |
| F8 | 20A | Engine control unit - Fuel injection ECU |
| F9 | 15A | Left low beam headlamp - Headlight level adjustment |
| F10 | 15A | Right low beam headlamp |
| F11 | 10A | Left high beam headlight |
| F12 | 10A | Right high beam headlight |
| F13 | 15A | Horn (beep) |
| F14 | 10A | Glass washers |
| F15 | 15A | Engine control system devices (ignition coil, solenoid valve, oxygen sensor, fuel injection system) - Fuel sump - Diesel fuel heater |
| F16 | 30A | Air pump |
| F17 | 30A | Windshield wiper |
| F18 | 30A40A | Electric fan |
Passenger Compartment
Diagram
| No. | Amp | Description |
|---|---|---|
| F1 | 15A | Diagnostic socket power supply circuit - Tow hitch + Navigation system |
| F4 | 20A | Electronic control unit (ECU) of automatic transmission - Steering column switch - Clock - Display - Navigation system - Electronic anti-theft alarm unit - Car radio |
| F5 | 15A | Anti-theft alarm siren |
| F6 | 10A | Diagnostic Connector - Flywheel Angular Position Sensor |
| F7 | 15A | Rain sensor Light sensor - Electronic anti-theft alarm system unit |
| F9 | - | Unknown |
| F10 | 40A | Heated rear window - Heated exterior mirrors |
| F11 | 15A | Rear window wiper |
| F12 | 30A | Power supply for sliding sunroof - Front door power windows |
| F14 | 10A | Paddle shifters - Aurbags ECU - Engine compartment fuse box |
| F15 | 15A | Instrument cluster - Display - Navigation system - Air conditioning - Parking sensors - Car radio |
| F16 | 30A | Central locking system - Super locking system |
| F20 | 10A | Rear right brake light |
| F21 | 15A | Rear left brake light - Additional brake light |
| F22 | 20A | 12V socket - Cigarette lighter fuse c3 - Interior lighting - Adjusting and folding the power outside mirrors - Car radio connection - Illumination of the mirror integrated in the sun visor - License plate light |
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Citroën C3 I (2001-2005)
Exterior Design
The exterior design stood out immediately thanks to its soft, rounded shapes inspired by classic Citroën models such as the legendary 2CV. A short front overhang, tall arched roofline, and compact proportions gave the C3 a friendly and distinctive character. Large, angular headlights and a simple slatted grille modernized the look, while protective black rubber strips on the bumpers and doors emphasized everyday usability, especially in urban driving.Interior
Despite its compact footprint, the interior was impressively spacious. The high roof allowed excellent headroom for both front and rear passengers, while the elevated seating position improved visibility. The dashboard followed a curved, minimalist design theme, highlighted by a unique instrument layout: a digital speedometer placed centrally, complemented by an analog tachometer positioned above it. An additional display for the trip computer sat on top of the center console, reinforcing the car's unconventional yet functional approach.Engines and Drivetrain
Under the hood, the Citroën C3 I offered a broad range of engines to suit different needs. Petrol units included 1.1, 1.4, and 1.6-liter engines, while diesel buyers could choose from 1.4 and 1.6-liter common-rail HDi options. Most versions were paired with a five-speed manual gearbox, while selected models featured the SensoDrive automated manual transmission. Higher trim levels could also be equipped with a four-speed hydraulic automatic.Platform and Technology
Built on a platform shared within the PSA Group, the C3 shared many mechanical components with models from Peugeot, ensuring proven reliability and cost efficiency. Some variants were also equipped with an early start-stop system, helping reduce fuel consumption in city traffic.Overall, the first-generation Citroën C3 (2001–2005) combined distinctive French design, clever interior packaging, and a wide choice of efficient engines, making it a popular and recognizable choice in the European supermini market.
Warning
Never use a higher amperage fuse!
Tip
Spare fuses are often in the box cover.
Check other CITROËN models:
View fuse box diagrams for other CITROËN models.

