UMC_a006 — Contactor Welded
Full alert identifier: UMC_a006_contactorWelded
Message shown in the car
Unable to charge - Mobile Connector error Unplug from wall outlet and retry
Alert description
UMC detected contactor stuck open or closed
Potential impact
UMC will not allow charging if the contactor is stuck in an unexpected state. Charge handle pins may be live and hazardous. Stuck open (non-hazardous) contactors will not trigger this fault with EU smart adapters.
Set condition
UMC contactor is open when it should be closed (non-EU smart adapter) or closed when it should be open for several seconds
Clear condition
UMC contactor is in the expected state for several seconds
Signals to check
Open this alert in Service Mode Plus and review the Payload tab. Use the field names below to identify the values shown by your vehicle.
| Signal | Unit |
|---|---|
Handle Voltage
UMC_
|
V |
Output Voltage
UMC_
|
Vrms |
Umc Receptacle Voltage
UMC_
|
V |
| Signal | Unit |
|---|---|
Fault Type
UMC_
|
— |
Line 1 Stuck Closed
UMC_
|
— |
Line 2 Stuck Closed
UMC_
|
— |
Check other alerts
With Service Mode Plus enabled, open Service Alerts → All. Review the other alerts for clues to the cause of UMC_a006.