VCTRAILER_a201 — Hsd Test Failed
Full alert identifier: VCTRAILER_a201_hsdTestFailed
Alert description
The vehicle trailer controller (VCTRAILER) ran a High Side Field-Effect Transistor (FET) functional test, but the voltage feedback was below the necessary threshold to confirm High Side FET functionality.
Potential impact
Trailer brakes may be unavailable or may not function as expected.
Set condition
High Side FET functional test does not measure voltage greater than 2V, but a trailer is still detected based on open electrical load.
Clear condition
The High Side FET functional test passes, or a trailer is no longer detected (no open electrical load).
Signals to check
These diagnostic fields are associated with VCTRAILER_a201. Check the alert's Alert Log in Service Mode Plus for available values.
| Signal | Unit |
|---|---|
Brake Voltage
VCTRAILER_
|
V |
Stc Voltage
VCTRAILER_
|
V |
Check other alerts
With Service Mode Plus enabled, open Service Alerts → All. Review the other alerts for clues to the cause of VCTRAILER_a201.