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E46 Convertible
The E46 vert forum. Talk about dropping your E46 top here.

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Old 03-14-2013, 04:59 PM   #1
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Join Date: Mar 2006
Location: Boston, MA
Posts: 42
My Ride: '01 A4 1.8TQM
Top stuck...suspect CVM wires 13/14

Top gets stuck midway through opening/closing just like everyone else!

I followed the troubleshooting tutorial and here's what I found:

I tested continuity among all the pins at the CVM. 9/18, 8/17, 7/16 all make a beep. The rest of the tests from the guide show a number in the 400s, except for 13/14. I'm assuming that means there's no continuity between 13/14 (Cowl Unlocked Sensor). I tested with the top half open - not sure if this matters.

I cut open the harness in the top, just above the drivers side window, expecting to see a broken wire or two where most people have resolved this issue. My Green/White (13) and Brown/Yellow (14) look fine - they aren't broken.

Do you think 13 and/or 14 are broken somewhere else? If so, where do you think another breakage point might be?

Do you think it's possible 13 and/or 14 are broken in that spot but the break is inside the wire itself (not visible)?

Do you think this means the Cowl Unlocked Sensor (S145) is broken?

I was thinking of running a wire from the CVM number 13 and/or 14 and splicing it into the harness past the last bend to the same wire. Presumably, if it's just a wire that's broken, the top would work after bypassing the broken wire. Just don't want to splice wires without getting some feedback first.

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