C5 Lexia help!

[Peter.N.]

After priding myself on the fact that I have so far been able to fix all my faults without a lexia - they say pride comes before a fall and I have fallen .

My C5 X7 developed a flat spot on the throttle, I was assured the fault was the HP diesel pump, I changed it and it wasn't! A little while after this we broke down on the Honiton bypass. The nice young AA man that came out couldn't find the fault so towed us home. I lied in bed the following morning analysing the symptoms and fixed it myself, however he did say that the first fault that showed on his diagnostic tool was the crank sensor so I ordered one intending to fit it when I changed the cam belt.

On our was to Scotland a few weeks ago it was getting worse, so I stopped at the services and disconnected the MAF sensor which considerably improved it, for about 1200 miles then it started stalling every time I stopped, I plugged the MAF in again and then had both faults. We managed about another 1200 miles and got home OK.

I then fitted the new crank sensor, I bought a Febi one with a 5 year guarantee, after I fitted it I couldn't start it at all initially although it would sometimes fire up and then stop, I bought and fitted another one now it wont start at all

Sorry for the long story but I thought you would like the facts before I got round to the Lexia. I obtained one a few years ago but couldn't get it to work, so today I had another go. It fired up OK but when it asked for the VIN no I entered it and it said it should have 17 characters, mine doesn't , only 16 so after a little experimentation I tried adding a "0" on the end and lo and behold the menu came up but it said "no dialogue" to everything, what have I done wrong .

Peter

[Hell Razor5543]

When I have used my Lexia (Rev B, supplied by Easy Diagnostics) it would, after I selected the vehicle (and with the ignition on, but not with the engine running) read the ECUs and show me the VIN (with the tick/cross options). It would only ask for the RPO number.

Just a thought. I know there is a fuse that relates to the diagnostic port. Have you checked that it is OK?

[myglaren]

Very strange that your VIN is missing a digit. Where did you look? Perhaps a discrepancy between the windscreen one and the paperwork.

[Peter.N.]

I checked and double checked both, definitely thee same and 16 digit's. My number is VFR**************[VIN obfuscated, can be read by forum staff] can you see anything amiss there?

Peter

[myglaren]

I can't but hopefully someone else might.

[Peter.N.]

Thanks.

Peter

[wheeler]

All European market cars have 17 digit VIN. You must have mis read it? If you PM me your registration number i can check the VIN

[myglaren]

Break it with spaces Peter or it will be unreadable in a PM

[Peter.N.]

Thanks.

Spoiler: show

V-F-R-7 R-W-R-8-9-L-5-1-2-4-7-6.

[Peter.N.]

I have just checked the other car and that has 17 digits. I have an almost identical one in the field, I wonder if that one would work with this.

[wheeler]

Ive tried a few combinations & cant get it should start V F 7.
If you give me your reg i can look up the VIN.

[Peter.N.]

Thanks that would be very helpful. YD09EXC.

Thank you

Peter

[wheeler]

Thanks that would be very helpful. YD09EXC.

Thank you

Peter

VIN is

Spoiler: show

V F 7 R W R H F 8 9 L 5 1 2 4 7 6

[RichardW]

Diagbox should auto id the VIN. Do you have another car you could try it on? It may be that the interface is defective... As I recall it also doesn't like it if there is no power on the diagnostic socket - there should be 12V on pin 16 and earth on pins 4 and 5.

[Peter.N.]

I will give it a try, thanks.

Peter