SDCR_a018 — Historical Pyro Trigger
Full alert identifier: SDCR_a018_historicalPyroTrigger
Alert description
Secondary Disconnect Controller (SDC) triggered the two-phase disconnect mechanism during a previous power ON state. Alert log signal data retrieved from Electrically Erasable Programmable Read-Only Memory (EEPROM) to be used for pyro disconnect trigger investigation afterward.
Potential impact
Drive unit may not be functional due to previous pyro disconnect.
Set condition
Sets when SDC reads alert log signal data from EEPROM for a previous pyro disconnect event.
Clear condition
Clears when SDC Power-ON self-test is successful.
Signals to check
Open this alert in Service Mode Plus and review the Payload tab. Use the field names below to identify the values shown by your vehicle.
| Signal | Unit |
|---|---|
HV Backup Supply V
SDCR_
|
V |
Boost Rail V
SDCR_
|
V |
Max Abs Speed
SDCR_
|
Hz |
V Bat
SDCR_
|
V |
| Signal | Unit |
|---|---|
Di Uart MIA
SDCR_
|
— |
Fault Currents Detected
SDCR_
|
— |
Hv Power Good
SDCR_
|
— |
Hv Power Not Good Qualified
SDCR_
|
— |
Hvbkup P Good Pin
SDCR_
|
— |
Pm Running Pin
SDCR_
|
— |
Pyro Armed
SDCR_
|
— |
Speed From Voltage
SDCR_
|
— |
Show 4 more fields
| Signal | Unit |
|---|---|
Speed Valid
SDCR_
|
— |
Trigger Reason Fault Currents
SDCR_
|
— |
Trigger Reason High Back EMF
SDCR_
|
— |
Trigger Reason Hv Bad At Speed
SDCR_
|
— |
Check other alerts
With Service Mode Plus enabled, open Service Alerts → All. Review the other alerts for clues to the cause of SDCR_a018.