46 Volt System - Lexus GS450h Manual

46 Volt System

The GS450h is equipped with a 46 Volt AC electrical system that powers the
Electric Power Steering (EPS) assist motor in the engine compartment.
•
46 Volt electrical system wires are bundled in amber sheathing for
identification.
•
The 46 Volt electrical system does not contain a storage battery. It is
powered by converting high voltage battery power. The wires are
routed underneath the vehicle from the HV battery pack DC-DC
converter.
•
If the HV battery pack malfunctions, backup power is provided to
the EPS motor by boosting the 12 Volt electrical system.
NOTE:
46 Volts has a higher arc potential than 12 Volts DC.
EPS Assist Motor
46 Volt Electric Power Steering System
14
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Front
Electric Power
Steering ECU