APS_w252 — Eth Switch Port Link Down
Full alert identifier: APS_w252_ethSwitchPortLinkDown
Alert description
The Autopilot electronic control unit (ECU) detects that the Media Control Unit (MCU) port connected to the ethernet switch has a link down, indicating a condition affecting the cabling or the ECU connected to that port.
Potential impact
Communication between the autopilot ECU and MCU will be disrupted.
Set condition
The alert is set if link goes down.
Clear condition
The alert clears when the link is up.
Signals to check
These diagnostic fields are associated with APS_w252. Check the alert's Payload in Service Mode Plus for available values.
| Signal | Unit |
|---|---|
Eth Switch Port 2
APS_
|
— |
Check other alerts
With Service Mode Plus enabled, open Service Alerts → All. Review the other alerts for clues to the cause of APS_w252.