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Wiring diagram

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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crazyace1104
Posts: 17
Joined: 25 January 2013
Year and Model: 2005 Volvo S60R
Location: Worcester Ma

Wiring diagram

Post by crazyace1104 »

Hey guys. I know there is a giant PDF out there of all our wiring and yes I have it :)


My question is to see if anyone has a diagram of how our ignition coils are wired? I know green/white is power(12v) but I wanted to see exactly there those wires go to and if they ever go into one wire or stay 5 separate wires throughout the entire engine harness.


Let me know what ya got!

Thanks
Connor

I have a 2005 s60r...tho any s60 diagram might be able to wrap my head around it :)
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jimmy57
Posts: 6694
Joined: 12 November 2010
Year and Model: 2004 V70R GT, et al
Location: Ponder Texas
Has thanked: 4 times
Been thanked: 320 times

Post by jimmy57 »

The internal amp in each coil has a unique signal lead. Power is common feed via relay and there are two groups of coils with common grounds.
ECM pins: 1-A31, 2-A30, 3-A50, 4-A52, and 5-A51
The signal is a pulse of 3 V DC +/- and its duration is coil primary on time (coil saturation).
There is a 4th wire terminal that may have a white wire. It is a signal proportional to secondary voltage but Bosch doesn't use it and I'm unsure if an 05 R has that wire. I don't think so as I only recall 3 wires in coil connector on my 2004 VR.
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