SSANGYONG REXTON 2006.09 Manual page 240

04-12
8010-01
2) Speedometer Gauge
The speedometer indicates the vehicle speed by calculating the signals from the rear wheel
speed sensors through ABS or ESP unit (speed signal cycle: 21 ms).
If the speedometer gauge vibrates, stops at a certain range or makes an abnormal noise, there
could be defectives in speedometer. However, these symptoms also could be occured when
the tire has uneven wear, different tire inflation pressures or different tire specifications.
Perform the speedometer test regarding the tolerance as described. However, it is not similar
simple work in field due to lack of measuring conditions such as test equipment and
preciseness.
1. Check the allowable tolerance of the speedometer and operations of the trip odometer by
using a tester.
2. Check if the speedometer gauge is shaking and the abnormal noise sounds.
3. Eliminate the hysteresis by tapping the speedometer.
- The allowable tolerance increases when the tires are worn or the tire pressure is out of
specified range.
- If an incorrect tire is installed on the vehicle, the speedometer may indicate the wrong
values and the units based on the vehicle speed may not work properly.
- Vehicle speed = CAN INPUT DATA x CAN constant
(CAN Constant = 2 x π x tire radius (dynamic load) x 60 min x 0.5 rpm)
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