RCU_a004 — Supply Overvoltage
Full alert identifier: RCU_a004_supplyOvervoltage
Alert description
The RCU power supply voltage is too high.
Potential impact
The RCU may not be able to perform backup power braking assist.
Set condition
The RCU power supply voltage is higher than 18 volts for 2 seconds or higher than 19 volts for 500 milliseconds.
Clear condition
Clears when the RCU power supply voltage has returned below 17.5 volts.
Check other alerts
With Service Mode Plus enabled, open Service Alerts → All. Review the other alerts for clues to the cause of RCU_a004.