VCLEFT_a387 — Shorted Cell Instc
Full alert identifier: VCLEFT_a387_shortedCellInstc
Alert description
The low voltage (LV) battery has failed a test that checks for shorted battery cells. May indicate the LV battery has a shorted cell and is unable to fully support the LV electrical system. Note: A single failure of this test does not reliably indicate a condition affecting LV battery function. Only after 5 failed tests will the vehicle controller set a separate alert indicating the LV battery has a shorted cell.
Potential impact
The LV battery may have at least one shorted cell, which could prevent it from adequately supporting the vehicle's electrical systems.
Set condition
The LV battery has failed a test checking for a shorted battery cell. Alert log signal data should provide more information, including the load current, battery temperature, and voltage dip measured during testing.
Clear condition
Clears automatically before the next shorted cell test is run, or after vehicle controller resets / wakes from sleep.
Signals to check
These diagnostic fields are associated with VCLEFT_a387. Check the alert's Alert Log in Service Mode Plus for available values.
| Signal | Unit |
|---|---|
IBS Temp
VCLEFT_
|
degC |
Max Current Reached
VCLEFT_
|
A |
Min Voltage Reached
VCLEFT_
|
V |
Opportunistic Test
VCLEFT_
|
— |
Shorted Cell Fault Counter
VCLEFT_
|
— |
Check other alerts
With Service Mode Plus enabled, open Service Alerts → All. Review the other alerts for clues to the cause of VCLEFT_a387.