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rallysteve



Member Since: 10 Feb 2014
Location: South Yorks
Posts: 2194

United Kingdom 2002 Defender 110 Td5 DCPU Keswick Green
Td5 Speedo Transducer Signal
All,

I know the TD5 speedo transducer provides a square wave of 4100 pulses per mile. Can anyone tell me the amplitude though please?

I assume it is 0-5v and is internally regulated by the transducer from the 12-14.4v vehicle voltage?

Cheers,
Steve 02' 110 TD5 Double Cab Rebuild Thread
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Post #659413 24th Oct 2017 3:00pm
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Martin
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Member Since: 02 Apr 2007
Location: Hook Norton
Posts: 6463

United Kingdom 2015 Defender 90 Puma 2.2 XS CSW Montalcino Red
It's 4100 0V (ground) pulses per mile out of the transducer, floating otherwise.

I can't confirm at the moment but I imagine the signal is pulled up to either 5V or 12V at the speedo end.  1988 90 Td5 NAS soft top
2015 D90 XS SW
Post #659415 24th Oct 2017 3:03pm
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rallysteve



Member Since: 10 Feb 2014
Location: South Yorks
Posts: 2194

United Kingdom 2002 Defender 110 Td5 DCPU Keswick Green
Cheers Martin,

Steve 02' 110 TD5 Double Cab Rebuild Thread
84' 90 3.9 V8 Caged Pickup Build Thread


Mobile Diesel Heater Build Thread
Post #659417 24th Oct 2017 3:09pm
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Mo Murphy



Member Since: 01 Jun 2008
Location: Letchworth Garden City, Herts
Posts: 2062

United Kingdom 1984 Defender 90 200 Tdi HT Pennine Grey
Steve,
PM crazywabbit on LR4X4.COM, he knows TD5 speedos inside out, he'll be able to give you the info you require.
HTH
Mo The Land Rover 90 - Many are called, few are chosen.
Post #659590 25th Oct 2017 2:49pm
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