#41
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Re: Hfs-4 wiring for Audi B8 s4 3.0 (2009-2013)?
If you probe test point 5, let me know the voltage:
1. pre-crank 2. idling
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Richard L aquamist technical support |
#42
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Re: Hfs-4 wiring for Audi B8 s4 3.0 (2009-2013)?
Hmm this seems wrong, test point 5 is reading battery voltage. 12v
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#43
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Re: Hfs-4 wiring for Audi B8 s4 3.0 (2009-2013)?
My mistake, test point 17. Sorry.
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Richard L aquamist technical support |
#44
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Re: Hfs-4 wiring for Audi B8 s4 3.0 (2009-2013)?
.76v accessory
.87-.88v engine idle (edit: seems like it's .94v after a few minutes of idling. My analog boost gauge reads -19.9psi) Voltage does climb slightly with throttle position. Last edited by MiztahSparklez; 27-10-2017 at 08:54 AM. |
#45
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Re: Hfs-4 wiring for Audi B8 s4 3.0 (2009-2013)?
This seemed to be a bit on the low side. What is the operating range of the MAP sensor?
a 2-bar MAP sensor should read approximately 1.8V precrank. a 3-bar map sensor should read approximately 1.3V pre-crank.
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Richard L aquamist technical support |
#46
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Re: Hfs-4 wiring for Audi B8 s4 3.0 (2009-2013)?
Hmm might be part of my problem. The sensor is supposed to be 2.5 bar. The voltage output goes from 0-5v according to the same document I found the bypass information in. Wonder if I tapped the wire for temperature and not pressure. The map sensors have both boost and temperature built in.
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#47
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Re: Hfs-4 wiring for Audi B8 s4 3.0 (2009-2013)?
this makes sense.
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Richard L aquamist technical support |
#48
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Re: Hfs-4 wiring for Audi B8 s4 3.0 (2009-2013)?
Hey Richard,
I have found that my car actually has yellow with gray stripe wiring for the map sensors post charger. These are found on the right side harness #9 when counting from the right on top and #8 when counting from right on bottom. This is in line with the image below. I was able to test continuity of the wires to verify. I will solder again to one of these wires and test out my activation. |
#49
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Re: Hfs-4 wiring for Audi B8 s4 3.0 (2009-2013)?
I am confused with you pin location. Two ECU compartments: 60 pin and 94 pin.
Tell me which compartment and pin#. Once located, I will check for you.
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Richard L aquamist technical support |
#50
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Re: Hfs-4 wiring for Audi B8 s4 3.0 (2009-2013)?
Quote:
I believe the temperature wire was the yellow with light blue stripe (this was reading .8-.9v when at idle). Last edited by MiztahSparklez; 15-11-2017 at 07:01 PM. |
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