Omega Owners Forum

Omega Help Area => Omega Electrical and Audio Help => Topic started by: the_bed_wrecker on 04 August 2008, 11:49:34

Title: Anybody got a ELM OBD near hartlepool ?
Post by: the_bed_wrecker on 04 August 2008, 11:49:34

Hi,
Got an ELM 327 from fleebay and having trouble with it (supprise supprise), anybody round Hartlepool got one I could try ?

USB TX / RX ok  
OBD TX ok but no RX light so all readings come out as 0

Tried Digimoto Lite and ScanTool on two laptops but the same for all.

Cheers
TBW

Title: Re: Anybody got a ELM OBD near hartlepool ?
Post by: the_bed_wrecker on 06 August 2008, 09:33:52

Are the OBD pin outs on the Omega "standard" ?
I think I have seen a thread saying that some early models had non standard pin outs, is this correct ?
Cheers
TBW

Title: Re: Anybody got a ELM OBD near hartlepool ?
Post by: Kevin Wood on 06 August 2008, 11:10:08

An ELM327 will only talk to more recent Omegas supporting the OBDII protocols (2.2, 2.6 and 3.2 engines, i believe) :-/.

Kevin

Title: Re: Anybody got a ELM OBD near hartlepool ?
Post by: the_bed_wrecker on 06 August 2008, 11:47:01

What would work on a old type ECU then ? (except for an expensive Tech2)
 I tried the paper clip trick and it seamed to work but the flashing order did not follow the repeat 3 times loop. Would it be different for a fac fitted LPG ? (deulfuel) and how long does \how many codes are stored  ?
will disconnecting the battery wipe out the old codes so I can get a fresh reading with the paperclip ?
Cheers
TBW :question

Title: Re: Anybody got a ELM OBD near hartlepool ?
Post by: Kevin Wood on 06 August 2008, 12:22:17

I think you need a so-called "Cheapo Tech 2". This is a code reader that doesn't have the ELM chip in, and more or less directly connects the diagnostic interface to a serial port on a PC This makes it a bit temperamental, and it needs a machine with a real serila port. Have a look for devices marketed as "Opel Tech-2".

.. and disconencting the battery won't help, I'm afraid. The ECU stores codes in non-volatile memory.

Kevin

Title: Re: Anybody got a ELM OBD near hartlepool ?
Post by: the_bed_wrecker on 06 August 2008, 13:03:11

So does that mean that the Omega is not OBD2 compliant or that the ECU does not like ELM chip set in perticular ?
Getting more cunfused by the second !!
Cheers
TBW

Title: Re: Anybody got a ELM OBD near hartlepool ?
Post by: Kevin Wood on 06 August 2008, 13:19:23

Older omegas (2.0/2.5/3.0 petrol models) were not OBDII compliant, I believe, so no generic OBDII code reader will work with them unless it also implements the non-OBDII protocols that were used on those models.

Kevin

Title: Re: Anybody got a ELM OBD near hartlepool ?
Post by: the_bed_wrecker on 06 August 2008, 13:56:26

So how can you tell if your cars suppose to be OBD2 ? and if it is not what software can you use, all the stuff iv'e seen is for OBD2 and so are the plug in testers.
Cheers
TBW

Title: Re: Anybody got a ELM OBD near hartlepool ?
Post by: tunnie on 06 August 2008, 14:10:56

Quote

So how can you tell if your cars suppose to be OBD2 ? and if it is not what software can you use, all the stuff iv'e seen is for OBD2 and so are the plug in testers.
Cheers
TBW

As mentioned by Kevin, its based on engines.

2.0 is not OBD2

Title: Re: Anybody got a ELM OBD near hartlepool ?
Post by: the_bed_wrecker on 06 August 2008, 14:25:48

So what interface and software can be used to test a 2.0l ? and is there anyway to reset the code so a can paper clip it ?
Cheers
TBW

Title: Re: Anybody got a ELM OBD near hartlepool ?
Post by: iggy21uk on 06 August 2008, 20:08:08

Opel- Scanner will but is over  £300.00 now  cos it supports the new CAN interface as well. Covers most VX models up 2008 from 87
and the £ has dropped against the €  :-/