HUD doesn't match speedometer
05-26-2011, 11:51 AM
#23
Le Mans Master
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Cruise-In VII Veteran
pin 6 on the grey connector behind the IPC(cluster) is the VSS(vehicle speed signal)
the HUD uses the VSS data for the display
post #16 TSB covers the cluster delta
the HUD uses the VSS data for the display
post #16 TSB covers the cluster delta
05-26-2011, 02:05 PM
#24
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St. Jude Donor '13
05-26-2011, 03:15 PM
#25
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05-26-2011, 03:21 PM
#26
Burning Brakes
wait wait wait.... you mean to tell me there is something other than the HUD that shows my speed?! 
Sometimes I look down and have no idea where that pesky needle is
Sometimes I look down and have no idea where that pesky needle is
05-26-2011, 03:28 PM
#27
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St. Jude Donor '13
05-26-2011, 03:53 PM
#28
Race Director
05-26-2011, 05:31 PM
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St. Jude Donor '13
05-26-2011, 05:42 PM
#30
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The HUD has a resolution issue since it can't read a half mile per hour so it has to round off the numbers. The analog speedometer can have a large accuracy issue since it has to convert the digital data the HUD just displays into a voltage which has inherent errors in the process. Then the analog voltmeter that shows the speed has accuracy issues as well. They can be tuned to be accurate but also have a good chance of not being accurate.
Bill
Bill
