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Old 01-20-2017, 08:57 AM   #4
WorkInProgressK
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Join Date: Jan 2017
Posts: 99
Quote:
Originally Posted by Qmulus View Post
That is the antenna connection for the alarm/immobilizer module for the remotes. You need that. It plugs into the module about an inch to the left in your picture, just to the outside of the blue connector.

The "antenna" is just a piece of coax (some flavor of RG174) run with the harness with the shield stripped away for the appropriate length (a bit over 9" for 1/4 wave) which acts as antenna. Your remote range will be greatly reduced if that is not connected. Range was obviously not a huge consideration, so they didn't spend much/any time on antenna design. This is a very common way of running the remote antennas. The M531 module used with the earlier one-button remotes also has a coax run in the harness, but they did not bother using an RF connector, and the signal and shield wires are incorporated in the main blue connector.

There, more than you wanted to know!
Thank you for the info! I am excited about the prospect that this might be the reason why my remotes never worked. But I curious to know why it was unplugged. Maybe the previous owner removed the module to clean under it? Or could it be a shop trying to make an extra buck. I will try to look where it goes tonight.

I will consider relocating the immobilizer while the chair is out or holes in floor board+ grommet.

Thank you Qmulus. The only info I found was about the 996 immobilizer repair talking about a coax, thanks for confirming.

!!!! Thanks for the picture. (I am glad I incorporated the ecu number in the picture.)
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