Instrument Cluster
Last edited by Beo; Dec 3, 2007 at 06:35 PM.
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Last edited by Beo; Dec 4, 2007 at 03:12 AM.
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"If this calibration is set to "Yes", the PCM will ignore the calibrated VSS settings and will use externally programmed VSS settings instead. That means an external scan tool (such as Tech2) is required to program the VSS settings.
If this calibration is set to "No", the PCM will use the calibrated VSS settings and will ignore any externally programmed VSS settings.
Only the following values may be entered into this table:
- No
- Yes
or maybe you can adjust the rear axle ratio to compensate.
this says it only changes the speedo
"The number of pulses the speed sensor produces per mile.
This value is used to determine the vehicle's road speed and therefore controls the speedometer needle in the instrument cluster. Increase this value to retard the speedometer needle, decrease this value to advance the speedometer needle.
It is calculated from tire size (T), H0102 (P) and H0103 (D) using the equation:
Pulses per mile: H0101=P*D*63360/(T*pi) where T is specified in inches.
or
Pulses per km: H0101=P*D*1000000/(T*pi) where T is specified in mm.
For automatic vehicles, it will normally be consistent with the equation: H0101=H0102*H0104.
Some vehicles, particularly those fitted with non-standard wheels or tires by the dealer, may not have this value set correctly. The speedometer may have been recalibrated in the instrument cluster to compensate for different tire sizes or diff ratios. In that case, the EFILive speedometer calculator may not calculate the settings for your vehicle accurately.



