NISSAN LEAF 2014 1.G First Responders Guide
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2-3 High Voltage Circuit Shut-Off System
high voltage can be shut off by the following methods: Service plug
Positioned in the center area of the Li-ion battery, this shuts off output high
when manually removed.
System main relay (located
in high voltage battery) Controlled by the power switch, this relay, which is controlled by the 12V
system, shuts off the high voltage from the Li-ion battery.
Emergency shut-off sys-
tem 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 Li-ion battery.
Charging connector Some of the high voltage components are activated during charging. Remove the charging connector to deactivate these components.
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 3-1 Preparation Items
off the high voltage system by referring to 3-3.1 High Voltage System Shut-Down
To avoid the risk of electrocution, NEVER touch the inside of the Li-ion battery unless appropriate
PPE is worn even after shutting off the high voltage system. The Li-ion battery maintains charge
even though the high voltage system is shut down.
3. Cover any damaged high voltage components with insulated tape.
2-5 Emergency Medical Equipment
The high voltage system should not interfere with emergency medical equipment which must be used in or
near the vehicle at an accident scene.
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3. Emergency Response Steps
• Failure to properly shut down the high voltage electrical system before the
Emergency Response 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
always wear appropriate PPE to avoid electrical shock. Shut down the high
voltage system by following the steps outlined in 3-3.1 High Voltage System Shut-
Procedures. (FRG–15) Wait at least ten (10) minutes for complete discharge of
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 the READY indicator or charging indicator are ON, the high voltage system is
• If possible, be sure to verify that the READY indicator on the instrument cluster
OFF and the high voltage system is stopped.
• Some of the under hood parts get hot and may cause serious burns. Use caution when working on or around these parts.
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3-1 Preparation Items
Personal Protective Equip-
Insulated gloves Up to 1,000V
protection from high voltage elec-
Insulated shoes –
o remove the service plug access
To remove the 12V battery terminal bolt.
Solvent resistant protection
To utilize in the event of a Li-ion bat-
tery electrolytic solution leak.
Solvent resistant protection
Absorbent pad The same pad used for internal
combustion engine fluids can be
used. To absorb any Li-ion battery electro-
lytic 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
3-1.1 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.
3-1.2 Daily Inspection
This inspection is performed before and after use. The responder 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)
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3-1.3 Insulated Tools
performing work at locations where high voltage is applied (such as terminals) , use insulated tools
meeting 1,000V/300A specifications.
3-2 Vehicle Immobilization and Stabilization
If possible, immobilize the vehicle by turning the 12V system OFF and stabilize it with a wheel chock(s) .
Stabilize the vehicle with cribbing, by removing air from the tires, or utilize the Lift Airbag Equipment for
rescue. • Do not stabilize the vehicle with cribbing under the Li-ion battery.
To avoid electrical shock, do not put the Lift Airbag Equipment for rescue and wheel
chock(s) under the high voltage components and harnesses as shown following. =
= Li-ion battery
Do Not Lift Zone
3N-1 3N-2 Li-ion batteryDAN
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3-3 How to Handle a Damaged Vehicle at an Accident Scene
If any air bags have deployed in the following 3 situations, the high-voltage (HV) system has
been designed to automatically shut off at the time of deployment.
The Nissan LEAF high-voltage system incorporates capacitors which are energized whenever the high-
voltage system is on. If the high-voltage system is shut down (either through one of the built-in automatic
mechanisms or manually through one of the procedures explained in this FRG) , the capacitors will begin to
gradually discharge. After 5 minutes, the voltage level will have dropped below 60V, and complete
discharge requires approximately 10 minutes after high-voltage system shut down. It is within
this period of time that responders must be most cautious.
When arriving to an incident involving a Nissan LEAF, the vehicle should be approached with caution and
inspected for the level of damage. In addition to overall vehicle condition (location and severity of body
damage, air bag deployment, etc.) , the high-voltage system should be assessed specifically. The locations
of the high-voltage component parts are illustrated in this FRG. Refer to 2-1 High Voltage-Related and
Component Locations and Descriptions (FRG–8) . Appropriate Personal Protective Equipment
must always be worn when approaching a vehicle of unknown condition, as described in this FRG.
Situation 1) High voltage system intact, occupants can be accessed without extrication tools
The HV system can be shut down by following the procedures in this guide, while wearing appropriate PPE.
After HV system shut down, occupant assistance can begin immediately, and no wait period is necessary.
Situation 2) High voltage system intact, occupants cannot be accessed without extrication tools
The HV system can be shut down by following the procedure in this guide, while wearing appropriate PPE.
After HV system shut down, absolute care must be taken not to cut through or damage any HV system
wiring, battery or components within ten (10) minutes of HV system shut down, but occupant
assistance operations using extrication equipment can begin immediately. The locations of the HV
components are illustrated in this guide.
Situation 3) High-voltage (HV) system damaged
If there is any evidence that the HV system has been compromised (such as arcing/sparking, orange wiring
harnesses cut or damaged, HV component casings damaged, etc.) , the responder may still be at risk of
high voltage exposure. The vehicle must be approached with extreme caution prior to initiating any system
shut down procedures or rendering assistance to occupants. Appropriate PPE must always be worn as
described in this guide, and the ten (10) minute wait time must be observed after HV system shut
down in order to ensure the system is de-energized.
In rare situations where vehicle damage is very severe, HV system shut down procedures as described in
this guide may not work. In these instances extreme caution and appropriate risk management must be
followed to prevent shock or electrocution to the responder or occupant.
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3-3.1 High Voltage System Shut-Down Procedures
of the following procedures can shut down and isolate the high voltage system. The first response
operation should only begin after shutting down the high voltage system. If the vehicle is heavily damaged,
for example the Li-ion battery is deformed, broken or cracked, appropriate Personal Protective Equipment
(PPE) must always be used and the Li-ion battery and high voltage components must not be touched. • Failure to properly shut down the high voltage system before the Emergency
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
• When contact with high voltage components or high voltage harnesses is
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
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• If the charge connector is connected to the vehicle, remove it. Refer to
Connector (FRG–17) .
• The vehicle contains parts that contain powerful magnets. If a person who is wearing a
or other medical device is close to these parts, the medical device may be
affected by the magnets. Such persons must not perform work on the vehicle.
• Be sure to verify that the READY indicator is off and the high voltage system is
After the high voltage system is shut down, please wait at least ten (10) minutes for
complete discharge of the high voltage capacitor. While waiting, do not operate any vehicle
The high voltage full discharge takes ten (10) minutes, but after five (5) minutes the voltage
has dropped below 60V.
• After shutting down the high voltage system and removing the 12V battery negative (-) terminal, wait at least three (3) minutes to discharge the air bag capacitor. Even though the
12V battery negative (-) is disconnected, the Supplemental Restraint System (SRS) air
bag maintains voltage at least three (3) minutes. During this time, there is a possibility of
sudden SRS air bag inflation due to harness short circuit or damage and it may cause
• Always shut down the high voltage system before disconnecting the 12V battery. Not doing so may result in serious injury or death from electrical shock.
• The 12V system will remain active even after the 12V battery negative (-) terminal is removed while the high voltage system is active. The high voltage system is active during
any of the following conditions:
– charging indicator is turned ON
– READY indicator is turned ON
Refer to 1-1.2 Interior Component Location (FRG–6) for location of these indicators. This is
DC/DC converter will not shut down and power will be supplied to the 12V
system and high voltage system continuously.
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Removing the Charge Connector
Use the illustration to identify the type of charge connector and follow the appropriate
1.Quick Charge Connector (If So Equipped)
The quick charger must be OFF to release the charge connector lock.
Release the quick connector lock and pull to remove. Refer to the quick charger label or
2. Trickle and Normal Charge Connectors
a. Press the charge connector release button on the charge connector and pull to remove.
If the charge connector cannot be removed, the electric lock is engaged. Follow
the next steps to disengage.
b. To disengage the electric charge connector lock, place the charge connector lock switch in the
UNLOCK mode (center level position) . Trickle and Normal Charge Connector
ypical Quick Charge Connector
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c. The charge connector can be unlocked by
pushing the charge connector unlock button on
the Nissan Intelligent Key® for more than 1
second. The charge connector will temporarily
unlock for 30 seconds.
d. Press the charge connector release button and pull the charge connector to remove it.
3. If the Trickle or Normal Charge Connector Cannot Unlock
a. Place power switch in OFF position.
b. Open the hood.
c. Using the jack rod from the tool set located in the cargo area (or suitable tool) , insert into the screw
located through the access hole near the front
of the hood lock.
d. Rotate screw clockwise to release the charge connector lock.
e. Press the charge connector release button and pull the charge connector to remove it. HOLD
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Indications the High Voltage System is ON
1. If the READY indicator is ON, the high voltage system is active.
The high voltage system is active if any charge indicator
is ON (blue LEDs on top of the instrument panel) .
Before disconnecting the 12V battery terminal, if necessary, lower the windows, unlock the doors, and open
the rear hatch as required. Once 12V battery is disconnected, power controls will not operate.
Powering Down the High Voltage System
The high voltage system can be shut down with any 1 of the following procedures: • Turn OFF the power switch anddisconnect the 12V battery. Refer to
Primary Procedure (FRG–20).
Remove the fuses for the high voltage control system and disconnect the 12V battery. Refer to
Alternate Procedure 1 (Remove Fuses) (FRG–21) .
Remove the service plug and disconnect the 12V battery. Refer to Alternate Procedure 2
Service Plug) (FRG–24) .
1. Check the READY indicator status. If it is ON, the high voltage system is active.
Place the selector lever in the Park (P) position.
3. Press the power switch once to turn OFF the high voltage system. Then verify whether the READY indicator is OFF and continue to the next steps to
the hood for 12V battery negative cable access.
If the READY indicator does not turn off, refer to
Alternate Procedure 1 (Remove Fuses) (FRG–21)
4. If possible, keep the Nissan Intelligent Key® at least 5 meters
(16 feet) away from the vehicle. AAYIA0155ZZ