VCLEFT_a340 — HV Blckd By Msmtch
Full alert identifier: VCLEFT_a340_HVBlckdByMsmtch
Alert description
The vehicle has detected at least one electronic control unit (ECU) required for high voltage (HV) system operation running a firmware (software) version that may not be compatible with the firmware installed on the rest of the vehicle. When this occurs, the vehicle controller blocks HV battery contactors from closing and HV system from becoming active to make sure no ECU required for HV system operation is limited or unavailable due to firmware. May occur after an unsuccessful or incomplete firmware update, and may be resolved through a successful firmware update.
Potential impact
Vehicle is unable to drive, charge, or support the low voltage electrical system until the firmware version mismatch is resolved, to make sure no vehicle functionality required for HV system operation is limited or unavailable due to firmware.
Set condition
The vehicle detects at least one ECU required for HV system operation running a different firmware version than expected.
Clear condition
The vehicle no longer detects any ECU required for HV system operation running a different firmware version than expected.
Signals to check
These diagnostic fields are associated with VCLEFT_a340. Check the alert's Alert Log in Service Mode Plus for available values.
| Signal | Unit |
|---|---|
ECU Mismatch Bits
VCLEFT_
|
— |
Service Mode
VCLEFT_
|
— |
Check other alerts
With Service Mode Plus enabled, open Service Alerts → All. Review the other alerts for clues to the cause of VCLEFT_a340.