Alert Description
A large voltage drop is detected in the input power to the vehicle controller, indicating the resistance on the input power feed to the vehicle controller is higher than expected.
Potential Impact
The vehicle controller may be unavailable due to lack of adequate input power, limiting vehicle functionality or making the vehicle inoperable, with at least one other alert specific to that condition present.
Set condition
Left vehicle controller (VCLEFT) / Right vehicle controller (VCRIGHT): Estimated resistance exceeds 500mOhm when input current is under 15A, and exceeds 50mOhm when input current is over 15A. Front vehicle controller (VCFRONT): Estimated resistance exceeds 100mOhm when input current from the power conversion system (PCS) is under 10A, and exceeds 20mOhm when input current from the PCS is over 10A.
Clear condition
VCLEFT/VCRIGHT: Estimated resistance is less than 500mOhm when input current is under 15A, and is less than 50mOhm when input current is over 15A. VCFRONT: Estimated resistance is less than 100mOhm when input current from PCS is under 10A, and is less than 20mOhm when input current from the PCS is over 10A.