VCREAR_a459 — 48 V Heater Fused Rail Test Diagnostics
Full alert identifier: VCREAR_a459_48VHeaterFusedRailTestDiagnostics
Alert description
Fused rail driver or downstream load driver test result stale.
Potential impact
May not be able to detect fused rail driver or downstream load driver stuck-on condition.
Set condition
Any required fused rail driver or downstream load driver test has not been completed within the last 24h.
Clear condition
All required fused rail driver and downstream load driver tests completed within the last 24h.
Signals to check
These diagnostic fields are associated with VCREAR_a459. Check the alert's Alert Log in Service Mode Plus for available values.
| Signal | Unit |
|---|---|
Left Seat Heat Could Not Power Off
VCREAR_
|
— |
Left Seat Heat Output High
VCREAR_
|
— |
Left Seat Heat Result Stale
VCREAR_
|
— |
Right Seat Heat Could Not Power Off
VCREAR_
|
— |
Right Seat Heat Output High
VCREAR_
|
— |
Right Seat Heat Result Stale
VCREAR_
|
— |
Upstream Current
VCREAR_
|
A |
Upstream Load Test Result Stale
VCREAR_
|
— |
Show 1 more field
| Signal | Unit |
|---|---|
Upstream Result Stale
VCREAR_
|
— |
Check other alerts
With Service Mode Plus enabled, open Service Alerts → All. Review the other alerts for clues to the cause of VCREAR_a459.