Lexia 3 / Diagbox Citroen C4 1.6 HDI

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Markta
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Re: Lexia 3 / Diagbox Citroen C4 1.6 HDI

Post by Markta »

GiveMeABreak wrote:
13 Apr 2020, 16:56
Are you actually getting a choice? This is unusual - as Diagbox will normally load up automatically for the appropriate car without a choice. The only choices it usually gives you is for earlier cars where you can select Lexia or 'Scantool' which is the basic OBD reader.

It should not take anywhere 5 minutes to read the ECUs on a C4 - so it is obviously having some trouble communicating somewhere along the line. Economy Mode shouldn't affect the testing - but to rule this out, start the engine and run the diagnostics again with the engine running.

If in fact you are given a choice of Diagbox - try selecting that instead.
Thanks Marc for you continued help, I appreciate it.

Yes, choice of Diagbox or Lexia 3 though unsure of what menu I need to select for an ABS bleed or whether it has that functionality...

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GiveMeABreak
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Re: Lexia 3 / Diagbox Citroen C4 1.6 HDI

Post by GiveMeABreak »

It's important to make sure it's working ok before attempting any procedures, just to be safe.

If you are confident it's working - and talking about Diagbox here, you need to undertake the Global Test first, as the 'test by ECU' functions came in on 7.58 as far as I can tell. Once all the ECUs are listed,, you should be able to select the specific ABS ECU, co into that, and then look at the various menus to locate the function you want.

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Re: Lexia 3 / Diagbox Citroen C4 1.6 HDI

Post by Markta »

GiveMeABreak wrote:
13 Apr 2020, 18:17
It's important to make sure it's working ok before attempting any procedures, just to be safe.

If you are confident it's working - and talking about Diagbox here, you need to undertake the Global Test first, as the 'test by ECU' functions came in on 7.58 as far as I can tell. Once all the ECUs are listed,, you should be able to select the specific ABS ECU, co into that, and then look at the various menus to locate the function you want.
Loaded up Diagbox just now and appears to recognise ABS ECU. Tried global test and retried 'test by function' on Lexia and would not pick up the ABS ECU.

Diagbox screenshots shows the bleeding function available of ESP81 (Bosch 8.1 which is correct according to my technical information), so will give this a go on Saturday, unless someone can confirm what Diagbox does next if I click on 'bleeding':-
Attachments
ESP81 Diagbox Capture.JPG
ABS Diagbox Capture.JPG

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GiveMeABreak
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Re: Lexia 3 / Diagbox Citroen C4 1.6 HDI

Post by GiveMeABreak »

It will be a guided procedure, so be prepared....

This is normally the second part of the operation when bleeding the primary and secondary brake circuits after changing the brake fluid.

This operation is performed in 2 stages:
Carry out an automatic bleed or a manual bleed using the brake pedal (Primary circuit )
Complete the bleed (secondary circuit) with exclusive reference to the diagnostic equipment procedure, which is what I think you are referring to above.

Let me know if you need the steps for the bleeding at the pedal part (which obviously needs 2 people), but the secondary part is guided via Diagbox.

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Re: Lexia 3 / Diagbox Citroen C4 1.6 HDI

Post by Markta »

Thanks Marc, really helpful.

I’ve already used a one man pressure bleeder to bleed as much air out of the primary circuit but have a pedal that goes to the floor. ABS bleed required as I replaced a seized rear caliper.

Was just wondering if I clicked on ‘bleed’ whether it would start the pump straight away as I wasn’t intending to do the bleed last night.

In the limited time I had available, was nice to find the bleed function and that Diagbox can do something that Lexia chant under v7.57

https://www.amazon.co.uk/dp/B000ROARTI/ ... MEbSW0B7ZR

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Re: Lexia 3 / Diagbox Citroen C4 1.6 HDI

Post by Markta »

Was also wondering whether the Diagbox by default bleeds two wheels at the same time ie. rear left and right or just one wheel at a time.

Thanks!

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GiveMeABreak
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Re: Lexia 3 / Diagbox Citroen C4 1.6 HDI

Post by GiveMeABreak »

Couldn't say for sure - but normally the procedure will give you a warning before it starts, so selecting the option will probably lead you to another menu before it starts anything.

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Re: Lexia 3 / Diagbox Citroen C4 1.6 HDI

Post by wheeler »

Markta wrote:
16 Apr 2020, 13:16
Was also wondering whether the Diagbox by default bleeds two wheels at the same time ie. rear left and right or just one wheel at a time.

Thanks!
Any one i have done with Lexia has been one wheel at a time, it tells you which wheel & when to open then close the bleed nipple.

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Re: Lexia 3 / Diagbox Citroen C4 1.6 HDI

Post by Markta »

wheeler wrote:
16 Apr 2020, 19:30
Markta wrote:
16 Apr 2020, 13:16
Was also wondering whether the Diagbox by default bleeds two wheels at the same time ie. rear left and right or just one wheel at a time.

Thanks!
Any one i have done with Lexia has been one wheel at a time, it tells you which wheel & when to open then close the bleed nipple.
DELETED
Last edited by Markta on 16 Apr 2020, 23:37, edited 2 times in total.

Markta
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Re: Lexia 3 / Diagbox Citroen C4 1.6 HDI

Post by Markta »

Markta wrote:
16 Apr 2020, 23:02
wheeler wrote:
16 Apr 2020, 19:30
Markta wrote:
16 Apr 2020, 13:16
Was also wondering whether the Diagbox by default bleeds two wheels at the same time ie. rear left and right or just one wheel at a time.

Thanks!
Any one i have done with Lexia has been one wheel at a time, it tells you which wheel & when to open then close the bleed nipple.
Thanks. I’ve heard plenty of new DOT 4 is needed as the ABS often requires bleeding two or three times over before you get a really good pedal. Joy of joys! 😧

I did have a MaxiECU diagnostic tool which works on Windows 10 and claims to do a full ABS bleed but it would only activate the pump on offside front and rear.

With the car stuck on the driveway, I managed to get my wife’s Windows 7 laptop going again for Diagbox otherwise I would have been f****d.

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Re: Lexia 3 / Diagbox Citroen C4 1.6 HDI

Post by Markta »

ABS successfully bled today thanks to Diagbox and wife assisting who was in passenger seat clicking the screens on laptop. Took 4 complete circuits and about 3 litres of DOT 4.

I wish I had a four poster ramp instead of a driveway, would have taken a tenth of the time it took. Time to convince the wife 🙂

Thanks to all who contributed.

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myglaren
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Re: Lexia 3 / Diagbox Citroen C4 1.6 HDI

Post by myglaren »

Pleased your efforts were successful.