Volt System - Lexus LS 600hl Hybrid 2008 Emergency Response Manual

4

6 Volt System

The LS 600h L is equipped with a 46 Volt electrical system that powers the
Electric Power Steering (EPS) assist motor in the engine compartment and the
optional Active Stabilizer Suspension System motors for the front and rear
stabilizer bars.
•
46 Volt electrical system wires are bundled in dull yellow 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.
Electric Power Steering
ECU
46 Volt Electric Power Steering System
Front Active Stabilizer Control
ECU
Rear Active Stabilizer
Motor
Front Active Stabilizer Motor
Optional 46 Volt Active Stabilizer Suspension System
13
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Assist Motor
2010 DC/DC Converter
(for Active Stabilizer and EPS)
2008/09 DC/DC Converter
(for Active Stabilizer and EPS)
Rear Active Stabilizer Control
ECU