Light doesnt come on when door open - Fiesta 99 lx

squinchy · 02-04-2012 9:36am #1

Hi,

My interior light is not coming on when a door is opened on my car. The light comes on when I manually switch it on in the car, so I've eliminated the light being faulty. I've also eliminated the switches on all the doors being faulty as I have tried opening all doors, but the light still doesn't come on. Has anyone got any suggestions to try get this working? I'm kind-of a newbie to the interior workings of a car, so simplified instructions would help me out alot. Thanks.

Squinchy.

Mr. Presentable · 02-04-2012 9:38am

There are three positions on the switch: Off/On/Door. Check it's not in the Off

Anan1 · 02-04-2012 9:39am

There are three switch positions - off, always on, and on when door open. Are you sure it's set to the last one?

Edit: Beaten to it!

squinchy · 02-04-2012 10:04am

yep, interior light switch set correctly for when door opens.

02-04-2012 10:13am

pop off the light and look at the pins,
there's usually 3

one permanent live 12v
one goes to the bulb
and ones auto switch 12v

the contact on the switch sits between the bulb pin and either switch or permanent 12v depending on position.the pins can bend and not make contact some times so check them out

squinchy · 02-04-2012 10:18am

cheers for that. will check it out. If that doesnt work though, what should i do?

Oral Surgeon · 02-04-2012 10:21am

squinchy wrote: »

cheers for that. will check it out. If that doesnt work though, what should i do?

get a torch

02-04-2012 1:53pm

I'd use a multi meter to see if theres 12vs at the light when the doors open,
the lights prob 5 normally closed switches wired in parallel.(unless the car has a canbus system but I doubt it in a 99)
so if any door/boot opens the contact closes sending 12v to the light.
So you should have 12v at each of the door button things.
I doubt there would be two fuses for the light but stranger things have happened,
get the haynes manual and check the wiring diagram.

02-04-2012 1:57pm

or it might be switch on the negative side in which case you wont have 12v at the door buttons,
you need the wiring diagram

02-04-2012 1:59pm

http://www.scribd.com/doc/8204594/Ford-Fiesta-19952001-Zetec-Wiring-Diagram-Petrol-and-Diesel

squinchy · 13-04-2012 9:17am

Cheers for the replies all. I have a new bit of info. When the boot door opens, the light in the boot comes on ( if thats at all helpful)

Indricotherium · 13-04-2012 9:29am

Spray a bit of three in one on the little button in the door frame and push it in and out a few times.

Problem solved.

Light doesnt come on when door open - Fiesta 99 lx

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