Wheel Speed Sensor Open Circuit, Interruption Detection (FA left)
- Check wiring and the relating electric connectors of the relevant wheel speed sensor (interruption?) - Check the wheel speed sensor (internal interruption?) - Replace the ABS-ECU, if the wiring and the wheel speed sensor are faultless
What you'll see
No driver-visible symptom recorded.
System reaction
ABS function at relevant wheel is switched off ABS function at other wheels is still available ATC engine and brake control is switched off HSA is deactivated EBL is not deactivated Drag Torque Control is not deactivated
Diagnostic depth
An interruption of the left front wheel speed sensor is detected. The measured resistance is too high. Remark: A wiring-mixture of wheelspeed sensor lines left/right could also lead to failure detections "interruption" or "shorted to GND" on both sides.
- wiring or relating electric connectors of the relevant wheel speed sensor is interrupted - wheel speed sensor has internal interruption - ABS-ECU defective