2014 NISSAN LEAF heater

NOTE:
Components with white number in black background are high voltage components.No. Component
LocationDescription
Charge

port Under hood Connecting port for EVSE (Electric Vehicle
Supply Equipment) . Two ports are available:
Normal charge and quick charge (if so
equipped) .
High voltage
cables Under hood and
undercarriage Orange-colored power cables carry high volt-
age current between each of the high voltage
components.
Traction Motor Under hood Converts three-phase AC power to drive
power (torque) which propels the vehicle.
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.
Electric air condi-
tioner compressor Under hood
Air conditioner compressor
Power Delivery
Module (PDM)
• On Board Charger
• DC/DC Converter
• High voltage junction box (J/B) Under hood
The PDM includes an On Board Charger, DC/DC
converter and high voltage junction box (J/B) .
The On Board Charger converts single-phase AC
power from a home power outlet to DC power and
increases the voltage in order to charge the Li-ion
battery.
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.) .
The J/B provides electric power from the Li-ion battery
to all high voltage parts of the vehicle.
12V Battery Under hood A lead-acid battery that supplies power to the low
voltage devices.
Cabin heater Interior (This unit is
installed behind the
instrument panel) This is the electric heat source for the cabin
heater. It heats the interior of the vehicle.
Li-ion (Lithium ion)
battery Undercarriage Stores and outputs DC power (Maximum voltage
398.4V) needed to propel the vehicle.
High voltage battery
service disconnect Rear seat floor Isolates the battery from the rest of the high volt-
age electrical system.
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.
DG–10

4. Apply foot brake and press the ignition switch to turn the system ON. Confirm READY
indicator in instrument cluster turns ON.
5. Check Li-ion battery available charge gauge: a. If remaining energy (1) shows higher than half full (7 of 12 gauge lines lit up) , continue to next step.
b. If remaining energy (2) shows lower than half full (6 of 12 gauge lines lit up) , discharging is not needed.
6. Turn ON electric devices such as headlamps, cabin heater (set to the highest temperature and maximum fan speed; do not use AUTO A/C setting) , navigation system and rear window defogger
to discharge the Li-ion battery. Allow approximately 30 minutes for each line on the available
charge gauge to drop. Discharge is complete when the available charge gauge drops to lower
than half full (6 of 12 gauge lines lit up) .
7. Press the power switch to turn the system OFF. LOCK Acc
(OFF) ON AAYIA0036GB
0
1 POWER
Brake
P A 120miles
0.0miles MPH
PM
F miles 1 2
AAYIA0148ZZ
DG–14

4-1 Jump Starting Procedures
1. If the booster battery is in another vehicle (B) , position the two vehicles (A and B) to bring their
12V batteries into close proximity to each other.
DO NOT allow the two vehicles to touch.
2. Apply the parking brake.
3. Push the P (Park) position switch to place the vehicle in the P (Park) position.
4. Switch off all unnecessary electrical systems (headlights, heater, air conditioner, etc.) .
5. Place the power switch in the OFF position (if possible) .
If the 12V battery is discharged, the power switch cannot be moved from the OFF
position. Connect the jumper cables to the booster vehicle (B) before pushing the
power switch.
6. Remove the vent caps on the 12V battery (if so equipped) . Cover the battery with a firmly wrung out moist cloth to reduce the hazard of an explosion.
7. Connect jumper cables in the sequence as illustrated () . • Always connect positive (+) to positive (+) and negative (-) to body ground (for example,
as
illustrated) , not to the 12V battery.
• Make sure the jumper cables do not touch moving parts in the motor compartment and that the cable clamps do not contact any other metal.
8. Start the engine of the booster vehicle (B) .
9. While the booster vehicle (B) engine is running, turn the power switch ON while pressing the brake pedal in order to place the LEAF in READY mode.
If the system does not start right away, push the power switch to the OFF position and wait
at

least 10 seconds before trying again.
10. After starting the EV system, carefully disconnect the negative cable and then the positive cable () . Keep the EV system on for over twenty (20) minutes to charge the 12V battery.
11. Replace the vent caps (if so equipped) . Be sure to properly dispose of the cloth used to cover the vent holes because it may be contaminated with corrosive acid. AAYIA0160ZZ
DG–32

4. Disconnect the cabin heater harness connector (A) from
the Li-ion battery. Touching high voltage components without wearing
appropriate

Personal Protective Equipment (PPE) will
cause electrocution.
a. Use the following instructions to disconnect thecabin heater harness connector. To prevent electrocution, cover battery side of high
voltage

connector with insulated tape (A) . : Insulated tape
5.
Disconnect the Li-ion battery vehicle communications
connector (A) while turning it counterclockwise. Touching high voltage components without wearing
appropriate

Personal Protective Equipment (PPE) will
cause electrocution.
A
AAYIA0171ZZ 1
3 4
2
Pull back lock tab
Press release and
pull connector

Disconnect connector
AAYIA0050GB AAYIA0172ZZ
A
AAYIA0167ZZ
DG–42