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2) Speedometer Gauge
The speedometer indicates the vehicle speed by calculating the signals from the rear left and rear right
wheel speed sensors through ABS or ESP unit. (For the vehicle without ABS or ESP, the signals are
received from the EMS)
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.
Check the allowable tolerance of the speedometer and operations of the trip odometer by using
a tester.
Check if the speedometer pointer is shaking and the abnormal noise sounds.
Eliminate the hysteresis by tapping the speedometer. 1.
2.
3.
