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how to log injector duty cycle in S4? I tried block 140 as listed on roos tech

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Old 06-13-2006, 04:42 AM
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Default how to log injector duty cycle in S4? I tried block 140 as listed on roos tech

but there was no output from that block?

On the Ross tech it is listed so I am wondering why I can't get it's output?

Groups 140-147: BDE
140
Pressure control valve, short trip


Duty cycle DSV
Rail pressure specified
Rail pressure actual
Result


[%]
[bar]
[bar]
Text:

Test ON/ Test OFF/

Syst. OK/ Syst. Not OK
Old 06-13-2006, 10:15 AM
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What is the part number (VAG Number) of the Engine Controller (ECU)?
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Old 06-13-2006, 02:12 PM
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8D0 907 551 M 2.7l V6/5VT
Old 06-14-2006, 11:24 AM
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Default Try group 002

That should give you injector on time. You calculate duty cycle from that and RPM.<ul><li><a href="http://www.ross-tech.com/vag-com/download/label-files/078-907-551-AZA.lbl">http://www.ross-tech.com/vag-com/download/label-files/078-907-551-AZA.lbl</a</li></ul>
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Old 06-14-2006, 11:53 AM
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Default thanks! is this the correct formula?

Duty Cycle = injector pulse width * RPM / 120000

This gives me duty cycle in % or ms?
Old 06-29-2006, 02:21 PM
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Pulse width is in milliseconds.
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