Saab: Help! Interior lightning problem: anyone have access to wiring diagrams?

On 24 Jan 2004 20:17:17 -0800, com (Juha) wrote:
 

Here's the info I have. It may only relate to UK cars though.

The +12V supply for the roof lighting goes down to a connector in the
boot behind the left back wheel. From there is goes forward to another
connector below the left A-pillar. Then it goes to the DICE module
(pin 70) above the pedals. It stays blue/green all the way to that
point. The power for it comes from fuse 4 via a blue/red wire into pin
24 of the DICE module.

Here's hoping it isn't a problem with the DICE module...

Cheers,

Colin.

Colin Stamp <plus.com> wrote in message news:<com>... 
Thanks! Just to make sure I got it right: it does NOT travel
inside/via A-pillar at all, but from roof it goes to trunk/boot, and
then to front of the car on left hand side of the car, where it
connects to DICE. Is that right? OK, I keep on hunting.

BTW; what is DICE? Something that is known to be a problem and
expensive to fix? How do I check if it is OK?

Best Regards,
Juha

On 25 Jan 2004 12:53:39 -0800, com (Juha) wrote:
 

Yep, as far as I can tell, that's how it is.
 

It's a control box that seems to handle loads of little timing and
power control functions for all sorts of things like indicator
flashing, intermittent wipe, fog lights and, of course, the various
interior light delays. I've no idea how much it costs but I bet it
isn't cheap. There's no reason why it should be broken - it's just the
worst-case scenario.

I suppose the simplest test would be to check for +12V on pin 70 and
pin 24. If it's there on pin 24 but not on pin 70, then the DICE unit
has that output turned off for some reason. A Saab dealer should be
able to read the fault codes to see what the DICE unit thinks is wrong
- maybe just a short to ground on the blue/green wire or something.

Colin.

"Colin Stamp" <plus.com> wrote in message
news:com... 
OK, I will do that. I suppose this DICE is pretty easy to locate? I checked
the wiring in trunk for this stuff, and yes, it seems that blue-green wire
has the same 0.4V in trunk, which I measured at roof dome. So, it must be
grounded somewhere between trunk and DICE, or DICE itself. I checked the
pins you suggested. However, I'm not sure If I'm ready to invest on new DICE
even if it is broken, because everything else it controls seems to work.

But, yes, I will do the measurements you suggested, and If it seems to be
DICE, I will take it to dealer for fault code read-out.

BR:Z