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[Webby the Bear]

 

http://www.youtube.com/watch?v=8M5BaAa6tCM&feature=g-all-u

[the alarming man]

no it is not webby,I had a 1992 volvo 240 estate before an omega and if it had The (i think it was) motronic ECU fitted that was the only way to get codes out of it,although it did have a habit of lieing and you could never be sure if you should be replacing the parts it reported 

[Webby the Bear]

 

just watching this video further and i have a question....

eric erases the codes after by pulling a fuse (one related to the ECU i think but dont quote me on that). now ''our'' paperclip test always has the ''warning'' that there will be old codes stored... is there not a fuse we can pull to erase the codes? and then presumably wait for the check engine light again and that will store just the current codes?

 

[the alarming man]

I think some one else needs answer that one as i only have half an engine you see lol and the paper clip test dont work on mine,but on the volvo it was there for i think 10 start ups and it erased  itself

[Nick W]

You use a similar method for blink codes on an NSX. Gives the codes for auto transmission problems too.

[Andy B]

You use a similar method for blink codes on an NSX. Gives the codes for auto transmission problems too.

You could blink codes on a Senator for the 'ride control' suspension, alarm, gearbox and get the digi dash to display a fault code too. 

[YZ250]

Slightly different version of pedal trick is used on Nissan Navara D40 to read blink codes. I suspect all models have some method of doing one or the other method. I wouldn't have known about either had it not been for the forums......................or You Tube. 

[I_want_an_Omega]

I've taken an ECU (that has been stored off a vehicle for well over a year) it has then reported the error codes from all that time without power being applied.

The codes must be written into some form on NV (Non Volatile) memory - its the same sort of thing that a radio will use to store the presets etc 

"as it happens" I have a spare ECU wich I opened up just for the hell of it - so I might just take some pics and show you what it all looks like 

(just have to find the camera now)

[I_want_an_Omega]

I've taken an ECU (that has been stored off a vehicle for well over a year) it has then reported the error codes from all that time without power being applied.

The codes must be written into some form on NV (Non Volatile) memory - its the same sort of thing that a radio will use to store the presets etc 

"as it happens" I have a spare ECU wich I opened up just for the hell of it - so I might just take some pics and show you what it all looks like 

(just have to find the camera now)

Should have made it a bit clearer insomuch as the ECU was stored with no power, and then put back into aother vehicle and reported the codes stored from the old vehicle - sorry to have confused anyone. 

[TheBoy]

Bosch Motronic 2.8.x as used in Omegas is non volatile, code reader to clear

[Webby the Bear]

so being ''non-volatile'' means it cant be erased by simply popping a fuse out?

[Martian]

so being ''non-volatile'' means it cant be erased by simply popping a fuse out?

Correct.
If it was volatile memory (eg, as in a radio preset) then all data is lost when the power is removed.