11
High Voltage Safety
The HV battery pack powers the high voltage electrical system with DC electricity. Positive and
negative orange colored high voltage power cables are routed from the battery pack, under the
vehicle floor pan, to the inverter/converter. The inverter/converter contains a circuit that boosts
the HV battery voltage from 230.4 to 650 Volts DC. The inverter/converter creates 3-phase AC
to power the motors. Power cables are routed from the inverter/converter to each high voltage
motors (electric motor, electric generator, and A/C compressor). The following systems are
intended to help keep occupants in the vehicle and emergency responders safe from high voltage
electricity:
High Voltage Safety System
A high voltage fuse * provides short circuit protection in the HV battery pack.
Positive and negative high voltage power cables * connected to the HV battery pack are
controlled by 12 Volt normally open relays *. When the vehicle is shut off, the relays stop
electricity flow from leaving the HV battery pack.
WARNING:
・ The high voltage system may remain powered for up to 10
minutes after the vehicle is shut off or disabled. To prevent
serious injury or death from severe burns or electric shock,
avoid touching, cutting, or opening any orange high voltage
power cable or high voltage component.
Both positive and negative power cables * are insulated from the metal body. High
voltage electricity flows through these cables and not through the metal vehicle body.
The metal vehicle body is safe to touch because it is insulated from the high voltage
components.
A ground fault monitor * continuously monitors for high voltage leakage to the metal
chassis while the vehicle is running. If a malfunction is detected, the hybrid vehicle
computer * will illuminate the master warning light
in the instrument cluster and
indicate “Check Hybrid System” on the multi-information display.
The HV battery pack relays will automatically open to stop electricity flow in a collision
sufficient to activate the SRS.
*Numbers apply to the illustration on the following page.
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