fault codes...........

[bamberwell]

hi, just finishing off my '99 mille that went down the road a while ago, and it sometimes comes up with DIAG 1 when starting.............does any one know what that is?got a copy off the workshop manual and all the codes are 11 ,12 ,13 etc .
before i start pulling everyting off oes anyone have any ideas?

cheers

[scobie1979]

hi this is your TPS setting it can be -1 0 or 1 its fairly simple to adjust it should be at one you will find your tps under the air filter on the side of the throttle body black plastic with wires going into it slacken the two screws and adjust till you get a 0 reading on your display

[bamberwell]

cheers m8 , that saves a lot of head scratching!!

[amauri]

As stated, a 0 or 1 is TPS adj but double digits are actual erros detected by the ECU.

There are two single wire connectors to the right of the battery that you must have connected, this activated the error reading mode. That connector should be disconnected for normal use.

Careful when adjusting the TPS, it must be done with the throttle speed screw backed out.

Here are the error codes:

[Ozman2downs]

hi, just finishing off my '99 mille that went down the road a while ago, and it sometimes comes up with DIAG 1 when starting.............does any one know what that is?got a copy off the workshop manual and all the codes are 11 ,12 ,13 etc .
before i start pulling everyting off oes anyone have any ideas?

cheers

"diag" should only appear when diag wires are connected like stated, so if diag 1 is always up your riding with diag wires connected. Basically, only connect if efi flashes.

TPS should be 0. Re-adjust if it reads 1 or -1. Just did this myself. Easy job.

PS: if it's flickering "diag" only once in a while you have a short.

[losthaga]

Newbies helping newbies! Love it! Great job scob and great answer!

hi this is your TPS setting it can be -1 0 or 1 its fairly simple to adjust it should be at one you will find your tps under the air filter on the side of the throttle body black plastic with wires going into it slacken the two screws and adjust till you get a 0 reading on your display

Careful when adjusting the TPS, it must be done with the throttle speed screw backed out.

Great save there amauri! Well sorted and right on point!

[losthaga]

"diag" should only appear when diag wires are connected like stated, so if diag 1 is always up your riding with diag wires connected. Basically, only connect if efi flashes.

TPS should be 0. Re-adjust if it reads 1 or -1. Just did this myself. Easy job.

PS: if it's flickering "diag" only once in a while you have a short.

Great point bro! This is very true. It may not even need a adjustment. If these wire are connected that is what reading your getting. If it has the 1 it definitely may need a minor adjustment too. The wires look like they should be connected but they are only to be when in diagnosing mode. NOT WHEN RIDING the bike!

[bamberwell]

thanks for the help lads.......haven't connected the wires myself , and only did a couple of hundred miles before i was knocked off it! i'll check to see if there is a short or if the wires are indeed connected, but thanks again.............

[Hollow Man]

I think I read somewhere that when the diag wires are connected it will read "Diag 1" if on cold start..ie when using the choke