Headlight out but not bulb

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My Name: Arfur Dent

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Posts: 3433
Joined: Sat Jul 23, 2011 3:47 pm
Model: C3 2002-2005, Original shape model
Year: 2002 (52)
Engine Size: 1.4 (16v)
Fuel Type: Diesel
Mileage: 100000
Trim Level: Exclusive
Gearbox: Manual 5 speed
DPF: No
LHD or RHD: RHD (UK)
Engine name: DV4 16-valve diesel (90 PS)
Has thanked: 319 times
Been thanked: 121 times

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Testing the headlight circuit at the headlight assembly multi plug
Testing the headlight circuit at the headlight assembly multi plug
Disconnect the plug from the headlight and check for 12v at the plug when the lights should be on.

This configuration is testing the dipped beam for 12v - which is present.


having 12v present at the plug, proves the fuses, BSM module, COM2000 and all the wires right up to the plug.


You can test other lights, like the main beam etc by testing different pin configurations at the same plug.

Use the Citroen C3 headlight socket pin diagram and mirror reverse it for use as the plug. Obviously you need to have the lights switched on to do this test and 'ECO mode' may not help you here 8-) :roll:


If you get the correct power at the plug and no headlight on then it's the bulb or the headlight assembly (probably the socket) but could be the wires in the headlight and their plugs are at fault.

Testing headlight plug power
Testing headlight plug power
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