C1390
Read the instructions below then
start the fault diagnostic procedure.
Symptom: Warning lamps for ABS and brakes are on as also is the central warning lamp.
TCS OFF warning lamp is on.
No ABS or TCS function.
Wheel Sensor. Wrong Number of Teeth
Fault symptoms
Warning lamps for ABS and brakes are on as also is the central warning lamp.
TCS OFF warning lamp is on.
No ABS or TCS function.
Conditions
The respective wheel speed value is compared with a reference value (the filtered mean of the speed of all four wheels).
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Speed of one wheel >25% higher than the reference speed over 20 s.
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Speed of two wheels >6% higher than the reference speed over 80 s.
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Speed of one wheel <6% lower than the reference speed for 20 seconds, or speed of two wheels for 10 seconds.
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ABS modulation continuous for more than 60 seconds.
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Diagnostic help
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The respective wheel speed sensor signal can be read using the diagnostic tool.
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The current wheel speed in km/h is displayed.
