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P2 fuel pump control model PEM control waveforms

Help, Advice, Owners' Discussion and DIY Tutorials on Volvo's stylish, distinctive P2 platform cars sold as model years 2001-2007 (North American market year designations).

2001 - 2007 V70
2001 - 2004 V70 XC (Cross Country)
2004 - 2007 XC70 (Cross Country)
2001 - 2009 S60
2003 - 2007 S60 R
2004 - 2007 V70 R
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abscate
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P2 fuel pump control model PEM control waveforms

Post by abscate »

Discussed on this website

https://www.picoauto.com/support/topic14491.html
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Tomaszabc
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Post by Tomaszabc »

If the pump is getting about 12 V from TCM yellow wire and PWM is about 2.7 V to 0 like in my case, that means fuel pump ground is shortened. Some electricans do this for temporary fix when PEM failure happens.

My case:
https://imgur.com/a/vQdUSfW
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