11
High Voltage Safety
The EV battery assembly powers the high voltage electrical system with DC electricity. Positive and
negative orange colored high voltage power cables are routed from the EV battery assembly, under the
vehicle floor pan, to the drive unit (inverter and motor) and DC/DC converter. The inverter contains a
circuit that boosts and inverts the 386 Volts DC from the EV battery assembly to 450 Volts AC to
power the motor. Power cables are routed from the DC/DC converter (HV junction block) to each
high voltage component (A/C compressor, battery coolant heater and cabin coolant heater). The
following systems are intended to help keep occupants in the vehicle and emergency responders safe
from high voltage electricity:
High Voltage Safety System
• High voltage fuses provide short circuit protection in the EV battery assembly.
• Positive and negative high voltage power cables connected to the EV battery assembly are
controlled by a 12 Volt contactor (relay) . When the vehicle is shut off and not charging, the
contactor (relay) stops electricity flow from the EV battery assembly.
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.
• The battery control computer continuously monitors for high voltage leakage to the metal chassis
while the vehicle is running. If a malfunction is detected, the battery control computer will
illuminate the master warning light in the instrument cluster and indicate “Check EV System”
on the multi-information display.
• The EV battery assembly contactors will automatically open to stop electricity flow in a collision
sufficient to activate the SRS.
*Numbers apply to the illustration on the following page.