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BMW E46 3 Series 1999 -2004 (323i, 325i/xi, 328i, 330i/xi, M3, conv, sport wagon) Late e46 Secondary Air Injection System wiring.


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Last Post: May 11, 2013 12:51 AM Last Post By: Manolito
Manolito

Posts: 3
Registered: 04/28/13
Late e46 Secondary Air Injection System wiring.
Posted: Apr 28, 2013 3:32 PM
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Does anyone have access to a wiring diagram for the secondary air system for a 2004 and later e46?

I have damaged (that is, burnt) the wires to the mass airflow sensor on the secondary air system. I am having a tough time tracing those wires.

The e46 Bentley manual covers only early e46. The re-designed secondary air system with a MAF is one of the mid-model changes that is not covered by Bentley.

...And if you have that, do you also have the resistance specifications for late e46 coils? The Bentley manual mentions that later e46 uses different coils, but does not give a resistance spec for them.

Thanks!
Manolito

Posts: 3
Registered: 04/28/13
Re: Late e46 Secondary Air Injection System wiring.
Posted: May 11, 2013 12:51 AM   in response to: Manolito in response to: Manolito
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Turns out that I didn't need the wiring diagram.

While I was working on the wires I burned, the check valve decided to stick shut, so rather than not being able to detect air flow, the system had no air flow to detect.

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