NISSAN 2012 LEAF - First Responder's Guide User Manual
Page 9
NOTE:
Components with white number in black background are high voltage components.
No.
Component
Location
Description
a
Traction Motor
Under hood
Converts three-phase AC power to drive
power (torque) which propels the vehicle.
b
DC/DC Converter
– High voltage
junction box
Under hood
This component includes a DC/DC converter
and high voltage junction box (J/B). The junc-
tion box provides electric power from the Li-ion
battery to all high voltage parts of the vehicle.
The DC/DC converter reduces the voltage of
the Li-ion battery to provide power to the 12V
battery in order to operate the vehicle’s electric
components (headlights, audio system, etc.).
c
Inverter
Under hood
Converts the DC power stored in the Li-ion
battery to three-phase AC power and controls
motor torque (revolution) by regulating the
motor current.
d
Electric air condi-
tioner compressor
Under hood
Air conditioner compressor
e
Cabin heater
Under hood
This is the electric heat source for the cabin
heater. It heats the interior of the vehicle.
f
Charge port
Under hood
Connecting port for EVSE (Electric Vehicle
Supply Equipment). Two ports are available:
Normal charge and quick charge (if so
equipped).
g
12V Battery
Under hood
A lead-acid battery that supplies power to the
low voltage devices.
h
Li-ion (Lithium ion)
battery
Undercarriage
Stores and outputs DC power (Maximum volt-
age 400V) needed to propel the vehicle.
i
High voltage
cables
Undercarriage and
Under hood
Orange-colored power cables carry high volt-
age current between each of the high voltage
components.
j
High voltage bat-
tery service dis-
connect
Rear seat floor
Isolates the battery from the rest of the high
voltage electrical system.
k
On Board Charger
Cargo area (This unit
is installed behind a
trim panel to prevent
access)
Converts single-phase AC power from a home
power outlet to DC power and increases the volt-
age in order to charge the Li-ion battery.
l
Brake power supply
backup unit
Cargo area (This unit
is installed behind a
trim panel to prevent
access)
Power supply backup unit for the brake system. It
supplies power to the brake system if a malfunc-
tion occurs in the 12V battery.
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