Diagonal 1 and 2
â–¶ How to fix
- Check supply wire (voltage drop at terminal 30a line?), connectors and vehicle fuse (blown?) - Supply voltage is temporarily too low. - The warning lamp is on as long as the voltage is too low - Replace the ABS-ECU module, if the supply wires and connectors are faultless (this is the last thing to do !)
What you'll see
No driver-visible symptom recorded.
System reaction
ABS disabled ASR, ESC/RSC disabled DTC disabled Hillhold Function disabled
Diagnostic depth
Detection
voltage below normal or shorted low
Possible cause
UVent1, Undervoltage Detection / Voltage supply axles 1+2+Dif, low voltage UVent1, Interruption Detection / Voltage supply axles 1+2+Dif, open circuit