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      06-02-2020, 10:09 AM   #10
ewicky
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Drives: '07 335xi 4D AT
Join Date: Jan 2017
Location: Seattle, WA

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Quote:
Originally Posted by lime View Post
Good idea with the positive leads. I just disconnected what I believe to be the IBS, Engine electronics, and junction box and saw no change in the amp draw. My setup looks a little different to the pdf so I'm not sure how to disconnect the B+ to the starter/alternator without disconnecting everything. Is there a better way to test that circuit?

Here is my setup, I disconnected the 3 cables down the right hand side of the power distribution box one at a time:
View post on imgur.com


I've heard that the alternator diode can cause these issues quite often with these cars, how would I test that?
How are you measuring current with the leads hooked up to the mA plugs on your multimeter? You should be using the 10A plug and COM. Now I'm not even sure I believe the 2.5A draw you measured, based on you photo it might be a miss-measure.
Appreciate 0