Fuse #4 Keeps Blowing. Disabling Engine

[Mike199025]

I have a Citroen c3 hdi 1.6 2003 and the fuse 4(under glovebox keeps blowing. Any help?

[coastline taxis]

start by checking your handbook and see what circuits it protects . then start by checking them circuits for any breaks or shorts in the wiring 

[paul.h]

The Haynes manual suggests the dash fuse box (bsi) fuse 4, 20 amp, supplies the steering wheel switches, the clock, the display, radio, automatic transmission. However, you should look in your handbook as already suggested since Haynes sometimes gets it wrong and cars are changed over the model years. Had you been having problems with any of these ?

[Mike199025]

Hi, no problems with any of them. Not an auto and no controls on steering wheel. No idea on what it is

[paul.h]

The steering wheel switches will be the horn, the wipers, lights and the radio ones on the end of the wiper stalk. Does the fuse blow when you use any of these or just go at random, possibly from a wiring problem ?

[Mike199025]

I had no issues with any of them, few weeks ago it seemed to be when I opened and closed doors. It blew, I changed it. Fine. This time soon as I put a new fuse in it blew, in fact I didn't even get chance to push it all the way in before it blew. Why was it disabling the engine? Made it sound like the fuel pump was on same fuse or something. Soon as it blew, the lights came on, wipers moved without a key in

 

Edit: oh and no, just popped at random.

Edited July 6, 2017 by Mike199025

[paul.h]

Possibly the wiring is damaged where it goes between the door pillar and driver's door if the first time it happened when that door was opened. The wiring can also break between the body and tailgate door.

 

You could also easily pull out the radio and have a look behind it for any wiring damage.

 

On the C5 when the battery is flat and I try to start it, the lights and wipers will come on, so this happening on your car could just be a sign of a big voltage drop as something caused the fuse to blow.

 

Have you looked in the handbook to see what fuse 4 protects ?

[Mike199025]

I checked the wires around the radio area, and yes it says it protects exactly what you said. No idea why it would stop the engine from starting though