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E46 M3 (2001-2006)

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Old 11-17-2012, 09:31 AM
M3newbie M3newbie is offline
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Location: New York
Join Date: Nov 2012
Posts: 3
Mein Auto: E46 M3
Interior Trunk Lid Release

Hi everyone I'm new to the site.

I bought my first BMW this summer and love the car - 2005 M3.

The interior trunk lid release button stopped working this past weekend and I would like to see if I can fix it. I searched the forum for this topic and didn't find anything.

I found the wiring diagram for the trunk lid release - but am having some difficulty interpreting it and need some help on how to troubleshoot this issue.

it looks like it is a normally open switch and when you press the trunk release you close the switch and it is tied back to the general control module. From there I can't really follow what happens. How can I test that the right voltage is at the gcm when the switch is closed and the right signal is going to the trunk lock release?

Any help is appreciated.

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