Previously titled FAO JUG

Hiya mate,

I thort id ask you as you seem to be in the know.

I have a MK2 punto, and since i got it, there has been a light on my dash (red light) in the shape of a door.

its a 5 door, somebody said it could be because of the door sensors, i cant find anything in the haynes, have you any idea what it could be, and where the sensors are??

The light is constantly on by the way

cheers mate
Ryan

Re: Fao Jug

does your interior light stay on too? cos theres a push button which operates the door open hazzard light and the interior light (afaik anyway) and i presume its broken... or missing

Re: Fao Jug

beau your not jug

Re: Fao Jug

custard said:

beau your not jug

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and?

Re: Fao Jug

custard said:

beau your not jug

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neither are you, thank ****

Re: Fao Jug

now now, lol.

Any help is much appreciated as its been annoying me for ages now!

No the interior lights comes on when i open the door, and then goes off when the ignition is started as its supposed to!

Re: Fao Jug

check your boot and bonnet switches. If either of those are faulty it could also read as a door being open

Re: Fao Jug

i cant seem to find the bonnet switch, and i have tried the boot one already!

Re: Fao Jug

ryang said:

i cant seem to find the bonnet switch, and i have tried the boot one already!

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In which case that could be your problem, maybe the bonnet switch was removed and the wire is earthing itself somewhere thus telling you that there is an open door?

Re: Fao Jug

mk GF's mk2 punto doesnt have a bonnet switch, i think only models with an alarm do.

due to the multi relay/timer unit, to determine where the fault is please do a coupe of tests for me.

test1: leave your door open and start the engine. does the interior light go out after a period of time?

test2: leave door open with key removed from car. does interior light go out? (might be a couple of mins)

if the light goes out in both the above tests it shows that the timer will ignore the signal from the door switches after the initial signal. that means your fault could be a door switch. if the light stays on in either test you know the door switches are fine (because your interior light goes off normally when you drive).

i will assume what i would expect, that the light switches off in both tests, suggesting a door switch is the fault.

assuming that, first thing to do is find out which switch is faulty. each door switch is held in place with a single screw. remove the screw then pull the switch out. remove the wiring connector and it is removed from the car. now get a multimeter and check for continuity through the switch. you should find continutiy when the pin is out and no continutiy when the pin is in. your faulty switch will have continuity in both cases. if you find a fault switch using this method replace it with a scrapyard switch (£1 or £2)

assuming all switches test ok the next most likely cause is a short to earth on one of the door switch circuit wires (the signal wire going to a switch). to find that fault you need to use a multimeter and test for continuity between the signal wire and chassis earth, that can easily be done using the connector you removed on each door pin. check on all of them (making sure you use the signal wire pin, not the earth wire pin). if you find continuity to earth you need to find the fault on that wire and isolate it to prevent the short.

hiya mate.

I did both the above tests, and left the door open for about 3 minutes,
But neither time did the interior light go out,
what does this suggest??

Thanks alot for your help, much appreciated

Ryan

On Mk2's the door switch is built into the catch itself.

Personally I'd take the rear door panels off- I've had a few cases on 5-doors where the door catch harness gets caught-up in the check-strap and wears through causing a short-circuit to earth.

D4nny8oy said:

On Mk2's the door switch is built into the catch itself.

Personally I'd take the rear door panels off- I've had a few cases on 5-doors where the door catch harness gets caught-up in the check-strap and wears through causing a short-circuit to earth.

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yea what's all this nonsense about door switches in the door there in the door lock itself as you have stated

an if your doors are open with the key in or out on a mk2 the lights will go out anyway triggered by the body computer to save power from the battery

if you take it to fiat the examiner can tell which door switch is signalling door open with all the doors closed much easier way to diagnose the fault

I to have had check straps wear thou the wiring harness in a right rear door on a mk2

D4nny8oy said:

On Mk2's the door switch is built into the catch itself.

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d'oh! :bang:

same theory applies to the wiring, only difference is the location of the switch.

littlepip17 said:

if your doors are open with the key in or out on a mk2 the lights will go out anyway triggered by the body computer to save power from the battery

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precisely the reason why we had to do the test. as it turns out his lights dont switch off in either test, which proves the fault is not with the door switches, if it was the light would go out in the tests as it usually does. since it doesnt go out it suggests a fault in the multi-timer unit.

i would definately check to see if the check strap has damaged the wiring insulation on all doors if it is a known issue, however if that was the case why isnt your light going out?

i think its time for a session on the examiner to see what the fault is with the multi-timer unit, with a bit of luck it will just be a wiring issue (as usual). if you dont like paying money for things then at least try disconnecting and then reconnecting the multi-timer unit with the battery disconnected (very easy see haynes)

thanks alot jug mate, il try that!

Another thought- often the microswitch in the boot catch can fail (causing the "door open" warning light to come on). Cure is a new boot catch.

At the end of the day, 10mins on the Examiner and you'll have a much clearer answer as to which of the 5 catches is faulty.