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rallysteve

Member Since: 10 Feb 2014
Location: Cumbria
Posts: 2243

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

24th Oct 2017 3:00pm

Martin
Site Admin

Member Since: 02 Apr 2007
Location: Hook Norton
Posts: 6736

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

24th Oct 2017 3:03pm

rallysteve

Member Since: 10 Feb 2014
Location: Cumbria
Posts: 2243

Cheers Martin,

Steve 02' 110 TD5 Double Cab Rebuild Thread

24th Oct 2017 3:09pm

Mo Murphy

Member Since: 01 Jun 2008
Location: Letchworth Garden City, Herts
Posts: 2420

1984 Defender 90 BMW M57 3.0 Diesel HT Auto 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.

50 Shades of Pennine Grey

25th Oct 2017 2:49pm

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