DIF_a244 — Mech Safe State Applied
Full alert identifier: DIF_a244_mechSafeStateApplied
Alert description
Alert for software trigger of mechanical safe state two-phase disconnect device.
Potential impact
The motor is permanently disabled.
Set condition
Software detects a shorted semiconductor switch. The alert log signals provide detailed trigger algorithm info.
Clear condition
Clears when low voltage (LV) power is removed from drive unit or a non-drive/drive cycle occurs
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 |
|---|---|
Delay
DIF_
|
us |
Ir Sensor V
DIF_
|
V |
| Signal | Unit |
|---|---|
Desat High Side
DIF_
|
— |
Desat Low Side
DIF_
|
— |
Flyback Fault
DIF_
|
— |
Gate Drive IC Undervoltage
DIF_
|
— |
Plausible Single Switch Short Only
DIF_
|
— |
Post Short Test Failed
DIF_
|
— |
Single Switch Short
DIF_
|
— |
Uds Self Test
DIF_
|
— |
Check other alerts
With Service Mode Plus enabled, open Service Alerts → All. Review the other alerts for clues to the cause of DIF_a244.