Been helping a friend with fixing his 02 XC with 145k miles for sale. Fixed a DIM failure so I thought I post a bit of info on it
The DIM failure was the clock would just periodically start to advance on its own. Google shows people with various DIM problems fixing it by reflowing the solder around a main controller chip (the motorola chip). So we pulled the DIM and had a electronic tech with equipment reflowed that chip and now works perfect. I believe another common failure is garbled text in the message window.
A couple of notes on this job
1. You must remove and install DIM with battery disconnected. My friend blew a couple of DIM bulbs without doing this. Of course, dis/reconnect battery on this car requires a bit of caution to avoid damaging electronics. Search around if unfamiliar.
2. This chip has lots of legs with very tight pitch. Definitely need someone with good skills + equipment. Don't want to touch this with a cheap Radioshack iron. Basically need to remove the bluish coating (some say acetone, my tech said he burned it off) and reflow the solder around the chip. We also reflowed the 2 resister arrays (lower left corner of the motorola chip, one is called RA6 (Resistor Array 6) as some people noted that.
3. There are several spring legs/towers on the circuit board. These are actually electrical contacts to the gauges that gets sandwiched with the circuit board. My friend accidentally bent one of the legs and speedometer didn't work until it was straightened out for proper contact.
Left info on this job here.
http://www.freewebs.com/howardsvolvo....htm#948779827
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