VCLEFT_a302 — Blower General Fault
Full alert identifier: VCLEFT_a302_blowerGeneralFault
Alert description
The brushless HVAC blower motor has experienced a condition affecting functionality. The HVAC blower will not function, and the blower motor driver in the left vehicle controller (VCLEFT) will be reset to attempt to clear the condition. Note: The reset may only temporarily clear the condition, depending on the cause. For example, the condition will quickly return if the cause is a broken wire or loose connection.
Potential impact
The HVAC blower will not function. The blower motor driver in the left vehicle controller (VCLEFT) will be reset to attempt to clear the condition affecting functionality.
Set condition
Any of the alert log signals is set (=1), indicating the left vehicle controller (VCLEFT) detects a condition affecting blower motor functionality.
Clear condition
The left vehicle controller (VCLEFT) integrated circuit controlling blower motor function no longer detects a condition affecting functionality.
Signals to check
These diagnostic fields are associated with VCLEFT_a302. Check the alert's Payload in Service Mode Plus for available values.
| Signal | Unit |
|---|---|
Cbc mia
VCLEFT_
|
— |
CBC UART Reset
VCLEFT_
|
— |
DRV Fault
VCLEFT_
|
— |
Drv mia
VCLEFT_
|
— |
TMS 320 Over Temp Shut Dwn
VCLEFT_
|
— |
Current Unbalance
VCLEFT_
|
— |
Fet Overtemp Shutdown
VCLEFT_
|
— |
Module Over Current
VCLEFT_
|
— |
Show 11 more fields
| Signal | Unit |
|---|---|
Motor Disconnect
VCLEFT_
|
— |
Motor Lost Phase
VCLEFT_
|
— |
Motor Over Temperature
VCLEFT_
|
— |
Motor Stall
VCLEFT_
|
— |
Over Current Latch
VCLEFT_
|
— |
Over RMS Current
VCLEFT_
|
— |
Over Voltage
VCLEFT_
|
— |
Overload Fault
VCLEFT_
|
— |
Overspeed Fault
VCLEFT_
|
— |
Startup Failed
VCLEFT_
|
— |
Under Voltage
VCLEFT_
|
— |
Check other alerts
With Service Mode Plus enabled, open Service Alerts → All. Review the other alerts for clues to the cause of VCLEFT_a302.