VCSUPER_a284 — Chiller Exv Fault
Full alert identifier: VCSUPER_a284_chillerExvFault
Alert description
The vehicle controller detects the chiller electronic expansion valve (EXV) motor driver is reporting an electrical condition (short or disconnect).
Potential impact
Cabin climate control system air conditioning and heating may be limited or unavailable. Powertrain performance may be limited.
Set condition
The chiller EXV motor driver is reporting an electrical condition (short or disconnect).
Clear condition
The chiller EXV motor driver no longer reports an electrical condition (short or disconnect).
Signals to check
These diagnostic fields are associated with VCSUPER_a284. Check the alert's Alert Log in Service Mode Plus for available values.
| Signal | Unit |
|---|---|
Charge Pump Undervoltage
VCSUPER_
|
— |
Driver Has Comm Error
VCSUPER_
|
— |
Driver State
VCSUPER_
|
— |
Driver Therm Shutdown
VCSUPER_
|
— |
Driver Therm Warn
VCSUPER_
|
— |
Is Coil Open X
VCSUPER_
|
— |
Is Coil Open Y
VCSUPER_
|
— |
Is Coil Short XN Gnd
VCSUPER_
|
— |
Show 8 more fields
| Signal | Unit |
|---|---|
Is Coil Short XN Vbb
VCSUPER_
|
— |
Is Coil Short XP Gnd
VCSUPER_
|
— |
Is Coil Short XP Vbb
VCSUPER_
|
— |
Is Coil Short YN Gnd
VCSUPER_
|
— |
Is Coil Short YN Vbb
VCSUPER_
|
— |
Is Coil Short YP Gnd
VCSUPER_
|
— |
Is Coil Short YP Vbb
VCSUPER_
|
— |
Undervoltage
VCSUPER_
|
— |
Check other alerts
With Service Mode Plus enabled, open Service Alerts → All. Review the other alerts for clues to the cause of VCSUPER_a284.