More Gremlins

Talk about the 406's electrical system, what wires do what, how to add extra functionality, etc.

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cliffk
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More Gremlins

Post by cliffk » Mon Feb 11, 2019 11:27 pm

2001 406 110 HDI

I am getting a strange intermittent problem, after the car has been standing for a couple of days, when the ignition is turned on there is a rapid ticking sound which stops when the engine starts also there is the pinging sound that happens when a message is flashed on the screen and the wipers sweep the screen, anyone know why?

Also sometimes when this happens the engine will not start and the anti theft system active warning shows up on the screen, the engine turns over but does not start, removing the key for a while and trying again eventually the engine will start.

PP2000 is not flagging a fault, I have 2 keys it happens with either key, I dont know if its connected but neither key pad plip operates the central locking, I have no idea how to fix that, the central locking does work with the door lock.

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steve_earwig
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Re: More Gremlins

Post by steve_earwig » Tue Feb 12, 2019 10:58 am

Our usual response to any bizarre behaviour is to check the connectors under the driver's side carpet for water damage viewtopic.php?f=10&t=12118

I think this only (mainly?) effects full-mux cars, not semi- but a 2001 could be either.
Unskilled meddling sin©e 2007

2004 D9 2.0 HDi 110 Estate lhd VF38ERHZF81657352 - sold but being very well looked after.
1991 Yamaha TDM850 - fuel leaks galore!
2008 Toyota Recall4 2.0 VVTI ATM LHD JTMBH31V90D007261 - flimsy piece of crap.
1953 Matchless G3LS - It's alive!!

cliffk
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Re: More Gremlins

Post by cliffk » Tue Feb 12, 2019 5:02 pm

Thanks for that steve I've also got an abs fault which is showing as open circuit rear left all accessible connections have been checked and someone mentioned there is a connector under the carpet.
When I got the car it had been standing for almost a year and the drivers carpet felt damp and it did mist up a lot I think the sunroof drain was leaking so was most probably wet through under the carpet.
Can anyone advise what to remove to be able to lift the carpet to get to the connections please

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steve_earwig
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Re: More Gremlins

Post by steve_earwig » Tue Feb 12, 2019 6:24 pm

I did have a look at mine but that was many moons ago, RapierKen's post says just remove the footwell side (kick) panel and sill trim. As I say, too long ago to remember much but I'm sure I'd remember lots more if it was difficult.

Looks like a few (probably torx) screws and a plethora of clips on Service Box.
Unskilled meddling sin©e 2007

2004 D9 2.0 HDi 110 Estate lhd VF38ERHZF81657352 - sold but being very well looked after.
1991 Yamaha TDM850 - fuel leaks galore!
2008 Toyota Recall4 2.0 VVTI ATM LHD JTMBH31V90D007261 - flimsy piece of crap.
1953 Matchless G3LS - It's alive!!

cliffk
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Posts: 111
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Re: More Gremlins

Post by cliffk » Wed Feb 13, 2019 5:30 pm

Found the connections under the carpet the foam on the carpet is really wet
Connections don't look too good and also 2 cables parted company with their metal end as I moved the connector to clean it I can't see how to re attach the cables to their metal end. Could this be my abs open circuit?
I think a trip to the breakers is in order they had 3 406.s in the other week hopefully I can scavenge these connectors and do a soldered repair.

cliffk
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Re: More Gremlins

Post by cliffk » Wed Feb 13, 2019 6:05 pm

wet connectors.jpg
detrached cables.jpg

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GingerMagic
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Re: More Gremlins

Post by GingerMagic » Wed Feb 13, 2019 6:09 pm

That is definitely the culprit, and should also sort your ABS out ( this connector carries signals from back of the car to the ECU etc )
Take many pictures, and don't rush it - my friend David did his soldering and has had no problems since.
Best of luck.
1999 T4 family wagon
2005 Vauxhall Meriva
1998 406 V6 Coupe - Midlife crisis..!
PP2000 user, can help with faults / diagnostics in the Bournemouth area.

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steve_earwig
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Re: More Gremlins

Post by steve_earwig » Wed Feb 13, 2019 6:42 pm

Oh sh*t :( There's your problem lady![/SMA] That connector's toast, you can either just cut the wires one at a time and just solder them together, or get another connector and piece it in, depends how much you're worried about the car.

If you can read codes off the wires we might be in with a chance telling you what they are and where they go. The twisted wires (sort of balanced pairs) will be for data of some sort, probably ABS, but I can see at least 10 terminals there that will have been giving you grief.
Unskilled meddling sin©e 2007

2004 D9 2.0 HDi 110 Estate lhd VF38ERHZF81657352 - sold but being very well looked after.
1991 Yamaha TDM850 - fuel leaks galore!
2008 Toyota Recall4 2.0 VVTI ATM LHD JTMBH31V90D007261 - flimsy piece of crap.
1953 Matchless G3LS - It's alive!!

cliffk
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Re: More Gremlins

Post by cliffk » Wed Feb 13, 2019 7:04 pm

cutting the wired one at a time and soldering them and covering with heat shrink doesnt sound a bad idea it will remove the water ingress problem and I doubt very much that I will ever need to disconnect these junctions in the future.

Will give that some thought, fortunately this is a third car in my fleet so I am not desperate to use it.

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GingerMagic
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Re: More Gremlins

Post by GingerMagic » Wed Feb 13, 2019 8:20 pm

If you can get over 6" of matching wire then you can bridge the connector while it's still connected ( by going over the top wire by wire ) using the same colour/number wires - sounds like it might work.?
1999 T4 family wagon
2005 Vauxhall Meriva
1998 406 V6 Coupe - Midlife crisis..!
PP2000 user, can help with faults / diagnostics in the Bournemouth area.

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steve_earwig
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Re: More Gremlins

Post by steve_earwig » Wed Feb 13, 2019 8:32 pm

That's handy, the carpet won't be dry any time soon.

Looks like that blue connector is having a bad time of it too, sadly I can't search for it in the diagrams - I need some wire/equipment codes.

Following back from the rear left ABS sensor wires brings me to 46HAB/10PR connector 16V NR (16 way black) which I think will be that big black jobbie:
Image
(Wires are 7021 & 7022). This connector also has feeds for the com2000 (also headlamps, fuel tank sender etc.) which probably explains the bong and wiper sweep.
Attachments
16V NR 46HAB 10PR.jpg
(69.4 KiB) Not downloaded yet
Unskilled meddling sin©e 2007

2004 D9 2.0 HDi 110 Estate lhd VF38ERHZF81657352 - sold but being very well looked after.
1991 Yamaha TDM850 - fuel leaks galore!
2008 Toyota Recall4 2.0 VVTI ATM LHD JTMBH31V90D007261 - flimsy piece of crap.
1953 Matchless G3LS - It's alive!!

cliffk
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Posts: 111
Joined: Sun Jan 22, 2012 9:51 pm

Re: More Gremlins

Post by cliffk » Wed Feb 13, 2019 10:09 pm

just had a look at the cables cant see 7010 on the big connector cables but it must be there the cables are tight together.

the cables into the blue connector are 1 beige cable marked 6349, 1 beige cable no marking, 1 white cable marked 8604

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steve_earwig
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Re: More Gremlins

Post by steve_earwig » Wed Feb 13, 2019 10:43 pm

6349 : ???en_gb.null??? :roll:
8604 : anti-theft alarm siren control

Err, does it have one of those? Diagram shows a 10-way blue connector but when I follow it to the electrical it's suddenly a 6-way black. Err, with 10 connectors :roll: I guess the label is a cock up.
Image
8611 : anti-theft alarm system bonnet switch
8605 : alarm siren
8602 : interior protection unit (anti-theft alarm)

Probably better off how it is...
Unskilled meddling sin©e 2007

2004 D9 2.0 HDi 110 Estate lhd VF38ERHZF81657352 - sold but being very well looked after.
1991 Yamaha TDM850 - fuel leaks galore!
2008 Toyota Recall4 2.0 VVTI ATM LHD JTMBH31V90D007261 - flimsy piece of crap.
1953 Matchless G3LS - It's alive!!

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steve_earwig
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Re: More Gremlins

Post by steve_earwig » Wed Feb 13, 2019 10:49 pm

Btw if anyone's wondering why there's a 10 way connector with just 2 circuits in it (I did anyway), on a car with a particulate filter it's fully populated.

Although on a later car it's just a 2 way blue.
Unskilled meddling sin©e 2007

2004 D9 2.0 HDi 110 Estate lhd VF38ERHZF81657352 - sold but being very well looked after.
1991 Yamaha TDM850 - fuel leaks galore!
2008 Toyota Recall4 2.0 VVTI ATM LHD JTMBH31V90D007261 - flimsy piece of crap.
1953 Matchless G3LS - It's alive!!

cliffk
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Posts: 111
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Re: More Gremlins

Post by cliffk » Wed Feb 13, 2019 11:14 pm

On mine the blue connector in the photo has a bunch of cables going into one half but only 3 connections (cables and pins) in the other half these are the 2 beige cables and the one white (1 beige and 1 white have come adrift)

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