VCLEFT_a309 — Brake Switch Faulted
Full alert identifier: VCLEFT_a309_brakeSwitchFaulted
Alert description
Brake Switch Faulted: power rail (5V_MAIN_EXT) required for brake switch reads < 4.5V
Potential impact
Vehicle controllers will not be made aware of the brake being pressed
Set condition
Brake Switch Faulted: power rail (5V_MAIN_EXT) required for brake switch reads < 4.5V
Clear condition
Restore 5V main rail
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 |
|---|---|
5 V Main Voltage
VCLEFT_
|
V |
Check other alerts
With Service Mode Plus enabled, open Service Alerts → All. Review the other alerts for clues to the cause of VCLEFT_a309.