Dim dash and check onntrol

[Eagle]

While trying to rig up my OBC indicator stalk on my E32 730i i accidentally joined 2 connections on the indicator stalk with my finger.

The dash went very dim except handbrake icons, abs those ones etc and check control with the ding came up.

Now whenever i turn on my ignition car same thing happens (ding seems to cut off a bit) it lights up properly for a .5 second then goes dim again with check control. OBC does the same goes bright for a bit then nothing

Car starts fine and everything seems to work otherwise, tried swapping CCM and LKM modules and check fuses but no luck.

Any help appreciated

Cheers

[Kai@e34.de]

perhaps you've damaged the photo transistor in the cluster. located between speedo and tacho, above the ASC control light. guess you've to look for a new or used circuit board then.

[Eagle]

Just swapped instrument clusters with my e34 same thing

[Kai@e34.de]

then try the same thing again with the dimmer

[Eagle]

dimmer as in cluster lights dimmer?

[Kai@e34.de]

yes, the dimmer beside the parking lt / low beam lt switch

[Eagle]

No luck, could it be a relay?

[Kai@e34.de]

strange. i'd unplug the OBC and try again. don't think it's a relay, the whole dash / OBC / heating control illumination also works without the CCM and LKM plugged in. it's switched over the light switch and the dimmer only, with no relay in between.

which 2 wires do you've had connected? color?

[Eagle]

Noticed the ding is quite sharp and seems to cut off not the usual dong. After it lights up the dash properly for .5 a second, only the battery, oil and park brake icon remain lit, i cant remember what it normally was on before. As e34 the all remain lit until you start.

I assume you talking about the wires that i joined?

[Eagle]

Grey\blue strip and grey\green strip

[Kai@e34.de]

sure? these wires are both for the EML control light in the cluster. normally, they've nothing to do with the dash illumination.

dunno what you should do next. i'd simply try to switch all parts at once and then see again. instrument cluster, OBC (or simply unplug it), dimmer, light switch (should have the same connector like the E34 light switch). perhaps try the same thing with the LKM and CCM unplugged.

which MY are your E34 and E32?

if you know some german, take a look and this, perhaps it can help you: http://www.e34.de/pics/kai/CCM%20und%20LKM%20Belegung.xls

[Eagle]

Also on the my and probably all e32's when you turn the key on to start it locks all doors and unlocks when you turn off.

This happens the same time as the display goes bright, ie turn ignition on doors lock as soon as that is done lights dim out and same when you turn off.

[Kai@e34.de]

ok, the central locking system is controlled by the "grundmodul" (GM) under your rear seat. plug it out and try again.

[Eagle]

I have both E32 and E34, E32 one with the problem.

Thanks for the help, hopefully i manage to solve it

[Eagle]

Incase anyone wants to know I finally figured it out, it was a blown fuse No20 "clock", hard to spot it. Problem gone. Praise the Lord