DIR_a077 — Lv Supply UV
Full alert identifier: DIR_a077_lvSupplyUV
Alert description
The drive interface (DI) or drive inverter (DIx) electronic control unit (ECU) detects a low voltage (LV) battery power supply undervoltage event.
Potential impact
Drive unit enters unit limp mode (see DI_a126_limpMode)
Set condition
LV supply voltage to DI (refer to lvSupply) is disconnected or drops below lower voltage threshold
Clear condition
LV supply rises back above lower threshold
Signals to check
These diagnostic fields are associated with DIR_a077. Check the alert's Alert Log in Service Mode Plus for available values.
| Signal | Unit |
|---|---|
Lv Supply V
DIR_
|
V |
Check other alerts
With Service Mode Plus enabled, open Service Alerts → All. Review the other alerts for clues to the cause of DIR_a077.