C5 Door Switch Location

[EDC5]

Agreed - not quite as bad as this IOS 11 update, curse Apple.

Hope you wont burn 4 hours worth of diesel updating it

Okay, so we should be definitely okay with a 2012 door lock then?

[bobins]

I'm going to take a chance and do my best to get a pre 2012 unit.... take it apart if I can. I might be able to replace the actual microswitch maybe?

It might be a real PITA to do, but I think I'd be tempted to test for voltage via the back of the plug that goes into the lock before I opted for a replacement lock. Presumably there'd be sufficient voltage for long enough to be able to see if the lock mechanism is getting energised via a simple test meter ? Confirming whether there's a signal voltage there might be a little more tricky unless you've got something slightly more elaborate than a simple test meter ? Wonder if a Lexia / Diagbox would be able to shed more light ? Presumably it'd be capable of an independent 'actuator test' on the locks ?

[bobins]

Okay, so we should be definitely okay with a 2012 door lock then?

If you put all your faith in the Citroen parts listing being accurate.... then yes

[GiveMeABreak]

I've just had a look at an X7 (January 2012 registered), exclusive and that has the same part numbers, so if you can get an exclusive 2012 or earlier, you might be in with a chance (or not )

[EDC5]

I'm going to take a chance and do my best to get a pre 2012 unit.... take it apart if I can. I might be able to replace the actual microswitch maybe?

It might be a real PITA to do, but I think I'd be tempted to test for voltage via the back of the plug that goes into the lock before I opted for a replacement lock. Presumably there'd be sufficient voltage for long enough to be able to see if the lock mechanism is getting energised via a simple test meter ? Confirming whether there's a signal voltage there might be a little more tricky unless you've got something slightly more elaborate than a simple test meter ? Wonder if a Lexia / Diagbox would be able to shed more light ? Presumably it'd be capable of an independent 'actuator test' on the locks ?

The locks work fine, its just the switch that informs the BSI that the drivers door has opened (interior light, seat easy entry position and the unlocking of the doors when one door is opened) that works maybe 25% of the time. If I open and close the door a few times then it will eventually work but I don't want to look like a tit in the car park

[bobins]

The locks work fine, its just the switch that informs the BSI that the drivers door has opened (interior light, seat easy entry position and the unlocking of the doors when one door is opened) that works maybe 25% of the time. If I open and close the door a few times then it will eventually work but I don't want to look like a tit in the car park

So it could still be the cabling at fault and not the switch ? Hence my comment about testing for a signal voltage.

[EDC5]

The locks work fine, its just the switch that informs the BSI that the drivers door has opened (interior light, seat easy entry position and the unlocking of the doors when one door is opened) that works maybe 25% of the time. If I open and close the door a few times then it will eventually work but I don't want to look like a tit in the car park

So it could still be the cabling at fault and not the switch ? Hence my comment about testing for a signal voltage.

Ok, so maybe the cable has stretched and no longer pulls the unit far enough to trigger the switch, but enough to unlock the latch?

[bobins]

Going back to Marc's wiring diagram - if wire 6914 was a bit flakey, wouldn't that give you your intermittent problems ?

[EDC5]

Going back to Marc's wiring diagram - if wire 6914 was a bit flakey, wouldn't that give you your intermittent problems ?

True, I'm guessing its held at 12v via a pull up resistor somewhere in the BSI then pulled to ground via the switch. I could test that pretty easily.

Problem being is that to get to the wire I'd have to take the door apart to get to it so I might as well have a spare lock mechanism ready to swap in case the wire is OK.

[bobins]

Any way to uncouple the plug and socket at the door hinge and test from there ? Might need to ask Marc nicely for the pin-outs for the plug/socket though

[GiveMeABreak]

What other pin outs do you mean? Aren't these already on the diagram - 6914 goes to the BSI (40 Pin White connector Pin 4) - if these diagrams are to be believed.

Or have I lost the plot somewhere - bearing in mind it's 23:52 and I'm only just downloading WatchOS 4 now....

[bobins]

If there's a plug and socket connector for the wiring loom at the door pillar then it could be useful to know which pin does what on the connectors there - assuming the wiring itself can't be be exposed to see what it's got on it.

[GiveMeABreak]

Ok with you, I doubt it unless there’s an actual functional identifiable module, but I’ll have a scout later.

[GiveMeABreak]

Elis, I've sent you some interconnection diagrams for the splices and harnesses with details of the wires carried. It may help a little.

One thing I noticed after pouring over these for some time is the earths - MC56 seems to be a significant earth around the electric seats and memorisation and locking - I think I sent you one previously regarding the earth locations, so see if that might be a common denominator.

[EDC5]

Thanks Marc, I've given them a quick look over. I think the wiring is fine, all of the switches work etc. Just the micro switch I think is the issue. I've ordered a replacement part and we'll see if I have any joy at the weekend