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Instrument cluster 

 

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 Post subject: Instrument cluster
Posted: Tue Apr 15, 2008 7:04 am 
Stock as a Rock
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Location: Palmerston North
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Does anyone know what function the instrument cluster has on the speed signal coming from the speed sensor? Is it purely to apply a pullup of 5v so that the ECU and TCM can interpret the signal? or is there something more sinister, like preventing odometer fraud or changing the signal?
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Posted: Tue Apr 15, 2008 7:38 am 
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Ride: 2.0 Turbo VW

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There is no prevention, it uses square wave.
However it'll only go forward.
So you can clock it to zero, but hold on, It'll take a while at 5v.


There is other ways, but require industry's equipment, you can read the eeprom, and even alter if you know what your looking for, but why bother?

 

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Posted: Tue Apr 15, 2008 7:08 pm 
Stock as a Rock
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Location: Palmerston North
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sorry I think you may have misunderstood. I want to remove the instrument cluster from my project car and use a 5v pullup resistor, unless of course the instrument cluster does something else. Also does the VSS have to receive an 8v supply or can it use 12v?
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