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[albitz]

A work colleague has a 1.8 Meriva - full irmscher kit, lovely little car, but it has become problematic over the last couple of days.Sometimes it starts ,sometimes it doesnt. Today the speedo stopped working, ABS/TC lights flashing on the dash etc.This suggested to me ABS ECU, but that wouldnt affect wether or not it starts ?
It has sat outside work for the last hour - turns over but wont start. RAC man has just turned up and got it started immediately, he did the same thing this morning - peculiar ?? :-/

[Lazydocker]

Loose immobiliser chip? As a wild stab in the dark!

Or, of course, the dreaded Cam/crank sensors

[albitz]

RAC man has turned up twice and started it immediately - apparently he doesnt really know why.
He thinks it may have something to do with the "body control unit" which apparently lives behind the dash ? which may have a loose connection which is causing the speedo not to work and the engine to start or not intermittently :-/ :-/
The car is now currently being driven but the speedo isnt working.
Owner tried a different key, and it made no difference.

[Marks DTM Calib]

Needs the codes reading, not any real common issues with these

[albitz]

Thanks Mark. Does it require a visit to VX for a chat with Tech2, or is there a lesser type device that can do the job ? :-/

[Welung666]

Any of the cheap OBD2 readers can read the engine codes off it for him

[albitz]

cheers Lee, will pass that on.

[Brikhead]

Any of the cheap OBD2 readers can read the engine codes off it for him

Some of the cheaper units don't talk to a.b.s. e.c.u.'s.

[Marks DTM Calib]

Cant see it being abs given the non starting. Dependent on year, the pedal test should work

[albitz]

He has tried the pedal trick - didnt work - car is 53 plate, so presumably too new ?
He is a test engineer here and is fairly clued up about electrickery and his built his own diagnostic device which gives codes and a certain amount of live data. He read the codes this morning and got p1615, u217,u2108. :-/
The car started and ran normally this morning,wouldnt start at lunchtime and wouldnt start at 5pm this evening.
Intermittent faults, arent they great fun.

[Welung666]

Codes come back as:-

P1615 ECM (engine control unit) Identification failed Immobilizer B-006
U2107 CAN bus no communication with CIM (Steering Column module) C-003
U2107 CAN bus no communication with IPC (instrument) C-003
U2108 CAN bus, no communication with ABS (anti-) C-003
U2108 CAN bus no communication with ABS / TC C-003
U2108 programmers / Replace control unit (SG) hardware and software B-003

That all points towards the immobiliser block on the steering column/barrel.

[albitz]

Thanks Lee, that sounds entirely feasible to me.
He is now going out to the car to have a look (wiggle the wires etc.) will report back.

[albitz]

He went out, put the key in and it started first time.
Starting to get dark now so he is going to investigate tomorrow morning.

[Marks DTM Calib]

Its more than that, its pointing at a general can bus failure.

I have seen one where a corruption causeed the can to need a full reconfigure

[albitz]

Sorry Mark, youve lost me. .........I assume we arent talking about a tin can or an old double decker :-/ .........any idea how he can find out and if it is that, how to fix it??