Instrument Cluster testing procedure?

[dave08]

Hello. Sometimes my speedometer reads above 0 with the engine stopped. It also happened to read bellow the actual speed, after sitting  a few days in the cold. The next restart it will be ok. As for reading above 0, usually it needs a battery disconnect, but it also happened to rectify itself.
Lately I've been closing the car without activating the alarm when parking for a few days and this seems to improve battery charge. Yesterday I made a one hour trip, and on my way back the needle was sitting on about 7km/h. I'm pretty sure this is because the battery was allowed to fully charge after a period of shorter journeys.

Now, I know that other brands allow an instrument cluster test (usually by pressing the trip computer button).
Is this possible to to on a 2005 9-3 TiD? The previous time I had to disconnect the battery was about 6 months ago.
Thanks and regards!
Dave

[Audax]

As far as I'm aware the only way to test a 9-3 cluster is with Tech-2. I have seen a few cars with faulty speedos too, only way to fix was replace them.

[dave08]

How about an op-com? I was messing with mine yesterday but didn't find a way to test and I got a bit scared today, because right after starting the car I got a P1125 (Throtte actuator error) when still parked, and I think it has to be with my messing yesterday. Clear the error and everything ok.

I was trying to do something like this:
http://www.youtube.com/watch?v=Bndw4WIqBTE

or this:
http://www.youtube.com/watch?v=IyhzbSOcqJI

[Audax]

No idea about op-com as I've never used one.