Fuses and relays Citroen C4 Picasso (UD / UA), 2006–2014

The Citroën C4 Picasso is a compact multi-purpose vehicle (MPV). Featuring a 2.73-meter wheelbase, it offers a spacious cabin and generous cargo capacity. Built on the PSA PF2 platform shared with the C4 and Peugeot 307, the five-seat MPV officially debuted in January 2007, shortly after the launch of the seven-seat Grand C4 Picasso. This article provides detailed fuse box diagrams and circuit assignments for the first-generation Citroën C4 Picasso (UD chassis) and Grand C4 Picasso (UA chassis) produced from 2006 through 2013.

Below are the component location diagrams, photographs, and fuse assignment tables for the power distribution boxes. Fuses for the “Cigarette lighter” and “Fuel pump” are highlighted in bold text.

In the engine compartment

The engine compartment houses two fuse modules: the main engine compartment fuse box located to the right of the battery, and the battery power unit mounted directly on the positive terminal.

Main fuse box

This unit was fitted in several configurations depending on vehicle specification.

Type 1

Overview.

Diagram
No.	Protected Circuit / Component	Rating (A)
F1	Engine management ECU	20
F2	Horn	15
F3	Windscreen / rear window washer pump	10
F4	Headlamp washer pump	20
F5	Engine management systems	15
F6	Adaptive bi-xenon headlamps, directional headlamp control module, clutch pedal switch, Safety Switching Unit (SSU)	10
F7	Automatic transmission ECU, coolant level sensor, power steering ECU	10
F8	Starter motor relay	15/20
F9	Brake pedal switch (brake lamp switch)	10
F10	Engine management actuators	30
F11	Blower motor fan	40
F12	Windscreen wipers	30
F13	Built-in Systems Interface (BSI)	40
F14	Coolant pump	30
F15	Right main beam headlamp	10
F16	Left main beam headlamp	10
F17	Left dipped beam headlamp	15
F18	Right dipped beam headlamp	15
F19	Engine management system sensors and actuators
F20	Engine management system	15
F21	Fuel filter heater	10

Type 2

Overview.

Diagram
No.	Protected Circuit / Component	Rating (A)
1	Engine management ECU	20
2	Horn	15
3	Windscreen / rear window washer pump	10
4	Headlamp washer pump	20
5	Fuel pump fuse	15
6	Adaptive bi-xenon headlamps, directional headlamp control module, clutch pedal switch, Safety Switching Unit (SSU)	10
7	Automatic transmission ECU, coolant level sensor, power steering ECU	10
8	Starter motor relay	15 / 20
9	Brake pedal switch (brake lamp switch)	10
10	Engine management actuators	30
11	Rear climate control blower fan	40
12	Windscreen wipers	30
13	Built-in Systems Interface (BSI)	40
14	Turbocharger boost pressure solenoid valve, exhaust gas heat recovery system unit	30
15	Right main beam headlamp	10
16	Left main beam headlamp	10
17	Left dipped beam headlamp	15
18	Right dipped beam headlamp	15
MAXI Fuses
MF1	Anti-lock Braking System (ABS) / ESP module	30
MF2		30
MF3	Electric Parking Brake (EPB) control module	30
MF4	Unassigned	-
MF5		20
MF6	Heating, ventilation, and air conditioning (HVAC) system	50
MF7		50
MF8	Pneumatic suspension control module	50

Battery Power Fuses

Mounted on the battery positive terminal module.

Diagram
No.	Protected Circuit / Component	Rating (A)
Type 1
F1	Automatic transmission gear selector actuator (where fitted)	5
F2	Brake lamp switch (brake pedal sensor)	5/15
F3	Battery Monitoring Sensor (BMS)	5
F4	ABS / ESP system processor supply	20/30
F5		5/30
F6	Transmission Control Module (TCM)	20/70
F7	Electric power steering unit	100
F8	Engine cooling fan motor	50
F9		30
F10	ABS hydraulic unit	30
F11		30
F12	Unassigned
Type 2
FL9	Built-in Systems Interface (BSI) main supply	60
FL10	Electric power steering unit	80
FL11	Transmission Control Module (TCM)	30
FL12	Engine cooling fan assembly	60
FL13	Built-in Systems Interface (BSI) secondary supply	60
FL14	Glow plug control module	70
FL15	Relay protection box 3	100
FL16	Unassigned
1	Unassigned
2	Unassigned
3	Battery Monitoring Sensor (BMS)	5
4	Transmission Control Module (TCM) feed	5
5	Data Link Connector (DLC / OBD-II port)	5/15
6	Transmission Control Module (TCM) ignition feed	15
7	ABS control module	5
	ESP control module
8	Rear 12V auxiliary power outlet	20

In the passenger compartment

The interior features two fuse distribution panels configured to protect passenger compartment electrical systems.

Main interior fuse box

Located at the lower driver's side of the dashboard. Trim panels must be unclipped to gain access.

Overview of the main interior fuse panel.

Diagram
No.	Protected Circuit / Component	Rating (A)
F1	Rear window wiper motor	15
F2	Central locking system	30
F3	Supplemental Restraint System (SRS / Airbags) ECU	5
F4	Infotainment head unit, electrochromic rearview mirror, diesel particulate filter (DPF) ECU, OBD-II diagnostic socket, climate control panel, headlamp leveling module	10
F5	Front power window modules, driver door master control panel, panoramic sunroof blind	30
F6	Rear power windows	30
F7	Interior courtesy lamps, cooled glovebox light, audio unit	5
F8	Multifunction display, audio system, steering wheel switch module, infotainment unit, Tire Pressure Monitoring System (TPMS) ECU, alarm ECU, trailer module	20
F9	Cigarette lighter / front 12V power outlet, infotainment system, luggage compartment lamp, audio unit	30
F10	Pneumatic suspension control module	15
F11	Brake pedal switch, ignition switch circuit	15
F12	Parking assistance ECU, automatic rain/light sensor module, power passenger seat, Lane Departure Warning System (AFIL), Hi-Fi audio amplifier, trailer socket	15
F13	Engine Switching Unit (BSM), driver power seat memory unit	5
F14	Air conditioning control panel, Bluetooth hands-free unit, automatic transmission gear selector, airbag ECU, instrument cluster display	15
F15	Central locking actuator circuit	30
F17	Heated rear window element	40
F29	Heated seats module	20
F30	Unassigned
F31	Trailer interface unit	40
F32	Rear 12V auxiliary power socket	15
F33	Parking assist ECU, rain and light sensor unit, power passenger seat, Lane Departure Warning System (AFIL), audio amplifier	5
F34	Trailer wiring connector supply	5
F35	Unassigned
F36	Hi-Fi audio amplifier	20
F37	Air conditioning module, illumination control switch	10
F38	Driver electric seat power supply	30
F39	Central locking system Fuel filler flap lock motor	5
F40	Front passenger electric seat power supply, panoramic sunroof module	30

Auxiliary BFH3 Fuse Panel

Mounted directly below the main interior fuse box.

Diagram
No.	Protected Circuit / Component	Rating (A)
F3	Passenger compartment fuse box 5 (cab chassis / utility variant)	15
F4	12V auxiliary socket for rear multimedia equipment	15
F5	Rear power window motors	30
F6	Front power window motors	30
F7	Heated seats module	2
F8	HVAC blower fan motor	20
F9	Power tailgate motor unit	30
F10	Driver seat belt pyrotechnic retractor pretensioner	40
F11	Trailer control module	5
F12	Driver power seat / seat massage module	30
F13	Passenger seat belt pyrotechnic retractor pretensioner	40
F14	Front passenger power seat / seat massage system module	30
F15	Panoramic sunroof blind motor	25
F16	Driver door multiplex switch assembly (power window / mirror controls)	5
F17	Exterior mirror puddle lights and seat memory ECU	10
F18	Hi-Fi audio system amplifier	25
F19	Spare fuse slot	-
F20	Power tailgate ECU	7.5
F21	Keyless Entry and Start (ADML) unit	3
F2	Heated exterior rear-view mirrors	7.5
F22	230V AC power outlet unit	20
F23	Unassigned	-
R1	230V AC socket relay	-
R2	12V auxiliary socket relay	-
R3	Unassigned	-
F1	Heated rear window element (located on rear of module)	40