2017 NISSAN LEAF Dismantling Guide

2. Basic High-Voltage Information
2-1
High-Voltage-Related and 12-volt-Related Component Locations and
Descriptions
NOTE:
Components with white number in black background are high-voltage components. =
76
342 8
5 1
Underside View Shown
AAYIA0051GB
DG–9

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-voltage
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 high-voltage
battery to three-phase AC power and controls
motor torque (revolution) by regulating the motor
current.
Electric air
conditioner
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
high-voltage battery.
The DC/DC converter reduces the voltage of the
high-voltage battery to provide power to the
12-volt battery in order to operate the vehicle’s
electric components (headlights, audio system,
etc.) .
The J/B provides electric power from the
high-voltage battery to all high-voltage parts of
the vehicle.
12-volt 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.
High-voltage 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-voltage 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
malfunction occurs in the 12-volt battery.
DG–10

2-1.1 High-Voltage Battery Pack Specifications
High-voltage battery voltage
360V nominal
(240V - 398.4V usable range)
Number of high-voltage battery modules in the pack 48
High-voltage battery dimensions 60.91 x 46.77 x 10.39 in. (1547 x 1188 x 264 mm)
High-voltage battery weight US: 648 lbs (294 kg)
Canada: 653 lbs (296 kg)
2-2 High-Voltage Safety Measures Circuit insulation
The high-voltage positive (+) and negative (-) circuits are insulated from
the
metal chassis.
Reducing the risk of
electrocution
The high-voltage components and harnesses have insulated cases or
orange-colored coverings which provide insulation and easy identification.
The high-voltage battery case is electrically connected to the vehicle
ground. This connection helps protect the vehicle occupants and vehicle
dismantlers from high-voltage electrical shock.
Identification The high-voltage components are labeled “WARNING” similar to label shown below. All high-voltage harnesses are coated in orange.
2-2.1 Warning Label
2-3 High-voltage Circuit Shut-Off System
The high-voltage can be shut off by the following methods: Service plug
Positioned in the center area of the high-voltage battery, this shuts off output
high-voltage
when manually removed.
System main relay (located
in high-voltage battery) Controlled by the power switch, this relay, which is controlled by the 12-volt
system, shuts off the high-voltage from the high-voltage battery.
Emergency shut-off
system In the case of a collision (front and side collisions in which the air bags are
deployed, certain rear collisions) or certain system malfunctions this system
is designed to shut off the high-voltage from the high-voltage battery.
Charging connector Some of the high-voltage components are activated during charging. Remove the charging connector to deactivate these components. AAYIA0147ZZ
DG–11

2-4 Preventing Electrical Shock
1. If it is necessary to touch any of the high-voltage harnesses or components, you must always
wear appropriate Personal Protective Equipment (PPE)
(refer to 3-2 Preparation Items (DG–15) ) and shut off the high-voltage system by referring to
3-4 High-voltage System Shut-Down Procedures (DG–16).
2.

To avoid the risk of electrocution, NEVER touch the inside of the high-voltage battery unless
appropriate PPE is worn even after shutting off the high-voltage system. The high-voltage battery
maintains charge even though the high-voltage system is shut down.
3. Cover any damaged high-voltage components with insulated tape.
DG–12

3. Preparation for Dismantling
• Failure to properly shut down the high-voltage electrical system before the
Dismantling Procedures are performed will result in serious injury or death from
electrical shock. To prevent serious injury or death, NEVER touch high-voltage
harnesses or components without always wearing appropriate Personal Protective
Equipment (PPE) .
• If it is necessary to touch any of the high-voltage harnesses or components you
must
always wear appropriate PPE to avoid electrical shock. Shut down the high-
voltage system by following the steps outlined in 3-4 High-voltage System Shut-Down
Procedures

(DG–16) . Wait at least ten (10) minutes for complete discharge of the high-
voltage

capacitor after the high-voltage system has been shut down. • NEVER assume the LEAF is shut OFF simply because it is quiet.
• If it becomes necessary for the dismantler to leave the vehicle, place a “DANGER” sign
(for
example, refer to 4-3 Storing the Vehicle (DG–38)) on the vehicle to alert other
people

that the vehicle contains a high-voltage battery.
• If the READY indicator or charging indicator are ON, the high-voltage system
is

active.
• If possible, be sure to verify that the READY indicator on the instrument cluster
is

OFF and the high-voltage system is stopped.
3-1 Discharging Procedures Do not perform this procedure if the high-voltage battery is damaged. If you are unsure of
battery

damage, use extreme caution and always wear appropriate Personal Protective
Equipment (PPE) when working on high-voltage components.
High-voltage battery discharging must take place before dismantling. Sufficient discharging can be
achieved by following these steps. 1. Place the selector lever into the Park (P) position
2. Apply the parking brake.
3. Set wheel chocks to ensure the vehicle is completely immobilized.
DG–13

4. Apply foot brake and press the power switch to turn the system ON. Confirm READY
indicator in instrument cluster turns ON.
5. Check high-voltage 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 defroster
to discharge the high-voltage 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.
Please contact following number if the high-voltage battery cannot be discharged. • Nissan EV Customer Support: 1-877-664-2738 (Hours of operation are Monday - Friday 7am -
7pm, Saturday 8am - 4:30pm Central time zone)
•
Nissan Consumer Affairs: 1-800-647-7261(US) or 1-800-387-0122 (Canada) (Hours of operation
are 8am - 5pm (Monday - Friday) Eastern, Central and Pacific time zones) LOCK Acc
(OFF) ON AAYIA0036GB
0
1 POWER
Brake
P A 120miles
0.0miles MPH
PM
F miles 1 2
AAYIA0148ZZ
DG–14

3-2 Preparation Items
Preparation Items
Specification Purpose
Personal Protective
Equipment (PPE):
Insulated gloves Up to 1,000V
For protection from high-voltage
electrical
shock
Insulated shoes –
Safety

shield –
Leather

gloves Must be able to fasten tight
around

the wrist (worn over
insulated gloves) . To protect insulated gloves
Wrenches Size:10mm
T
o remove the service plug access
cover bolts.
To remove the 12-volt battery terminal
bolt.
Solvent resistant protection
gloves –
To utilize in the event of a high-
voltage battery electrolytic solution
leak.
Solvent resistant protection
shoes –
Absorbent pad The same pad used for internal
combustion engine fluids can be
used. To absorb any high-voltage battery
electrolytic solution leakage.
Standard fire fighting
equipment Standard fire fighting equipment
Depending on type of fire (vehicle
or battery) use standard fire
fighting equipment (water or
extinguisher) . To extinguish a fire.
Insulated tape Insulating
To cover any damaged harnesses to
protect from and prevent electrical
shock. Tape should cover all bare or
damaged wire.
DG–15

3-3 Personal Protective Equipment (PPE) and Insulated Tools
3-3.1
Personal Protective Equipment (PPE) Protective Wear Control
Perform an inspection of the Personal Protective Equipment (PPE) items before beginning work. Do not use
any damaged PPE items.
3-3.2 Daily Inspection
This inspection is performed before and after use. The worker who will be using the items should perform
the inspection and check for deterioration and damage. • Insulated rubber gloves should be inspected for scratches, holes and tears. (Visual check and airleakage test)
• Insulated safety boots should be inspected for holes, damage, nails, metal pieces, wear or other problems on the soles. (Visual check)
• Insulated rubber sheet should be inspected for tears. (Visual check)
3-3.3 Insulated Tools
When performing work at locations where high-voltage is applied (such as terminals) , use insulated tools
meeting 1,000V/300A specifications.
3-4 High-voltage System Shut-Down Procedures
Once the high-voltage battery is properly discharged, any of the following procedures can shut down and
isolate the high-voltage system. The dismantling operation can only begin after shutting down the high-
voltage system. If the vehicle is heavily damaged, for example the high-voltage battery is deformed, broken
or cracked, appropriate Personal Protective Equipment (PPE) must always be used and the high-voltage
battery and high-voltage components must not be touched. • Failure to properly shut down the high-voltage system before the dismantling
procedures
are performed will result in serious injury or death from electrical shock. To
prevent serious injury or death, NEVER touch high-voltage harnesses or components
without always wearing appropriate Personal Protective Equipment (PPE) . PPE
must always be worn when touching or working on high-voltage components
• When contact with high-voltage components or high-voltage harnesses is
unavoidable,
or when there is risk of such contact, you must always wear appropriate
PPE. PPE must always be worn when touching or working on high-voltage
components.
DG–16