INFINITI Q70 HYBRID 2014 First Responder´s

2-2 High Voltage-Related and 12V-Related Component Locations and
Descriptions
NO
TE:
Components with white number in black background are high voltage components. AAYIA0338ZZ
FRG–11

No. Component
LocationDescription
Lithium-ion
(Li-ion)
Battery Trunk area (behind
rear seat back) The Li-ion battery stores and outputs DC
power (Maximum voltage 400V) needed to
propel the vehicle.
DC/DC Converter Trunk area (mounted
to top of Li-ion bat-
tery) 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.) .
Service Plug Trunk area (below
parcel shelf; behind
access door in trim
panel) This is used to disable the high voltage system.
12V Battery Trunk area (below
parcel shelf; behind
trim panel left of
Li-ion battery) A lead-acid battery that supplies power to the
low voltage devices.
High Voltage Har-
nesses Trunk area (on Li-ion
battery) , under floor
pan, engine com-
partment Orange-colored power cables carry high DC
voltage between each of the high voltage com-
ponents.
Electric Air Condi-
tioner Compressor Engine compart-
ment (front driver
side) Air conditioner compressor
Traction Motor
Inverter Engine compart-
ment (rear passen-
ger side) 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. The inverter has a built in high
voltage capacitor.
Traction Motor Built-into the trans-
mission Converts three-phase alternating current (AC)
power to drive power (torque) which propels
the vehicle.
2-3 Li-ion Battery Pack Specifications Li-ion Battery Specifications
Li-ion

battery voltage 346V (400V max.)
Number of Li-ion battery modules in the pack 12
Li-ion battery module voltage 28.8V each
Li-ion battery dimensions 33.35 x 17.83 x 15.43 in. (847 x 453 x 392 mm)
Li-ion battery weight 121.28 lbs (55 kg)
FRG–12

2-4 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 emergency
responders 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.
2-4.1 Warning Label AAYIA0010ZZ
FRG–13

2-5 High Voltage Safety System
The
high voltage safety system is intended to help keep vehicle occupants and emergency responders safe
from high voltage electricity. • A high voltage fuse provides short circuit protection inside the high voltage battery.
• The high voltage safety system is insulated from the metal chassis.
• Positive and negative high voltage power cables are connected to the high voltage battery and arecontrolled by normally open system main relays (SMR1 and SMR2) . When the vehicle is shut off,
the relays stop electrical flow from leaving the high voltage battery. However, it can take
approximately ten (10) minutes for the high voltage capacitor to fully discharge. • The high voltage system and high voltage capacitor may remain powered for up to
approximately
10 minutes after the vehicle is shut off. Personal Protective Equipment
(PPE) must always be worn when touching or working on high voltage components
to avoid risk of electrical shock and severe personal injury or death.
• The high voltage battery retains high voltage at all times. PPE must always be worn when touching or working on high voltage components to avoid risk of electrical shock and
severe personal injury or death.
• A ground fault monitor continuously monitors for high voltage leakage to the metal chassis while the vehicle is running. If a malfunction is detected, the HPCM (hybrid powertrain control module) will
illuminate the hybrid system warning lamp in the instrument cluster. AAYIA0001GB
FRG–14

• The high voltage battery relays (SMR1 and SMR2) will automatically open to stop the electrical flow
in a frontal collision that is sufficient enough to activate the supplemental restraint system (SRS) .
2-6 High Voltage Circuit Shut-Off System
This vehicle is equipped with a system to shut off the current from the Li-ion battery by the following
methods: Service plug
Positioned in the center area of the Li-ion battery, this plug shuts off the
output
of high voltage when manually removed.
System main relays (located
in the high voltage battery) Controlled by the ignition switch, these relays are powered by the 12V
system and shut off high voltage from the Li-ion battery.
Emergency shut-off system In the case of a collision (air bag deployment, etc.) or certain system mal- functions this system is designed to shut off the high voltage from the
Li-ion battery.
2-7 Preventing Electrical Shock 1. If it is necessary to touch any of the high voltage harnesses or components, always wearappropriate Personal Protective Equipment (PPE) [refer to 3-1 Preparation Items (FRG–17)].
Shut

off the high voltage system by referring to 3-3.1 High Voltage System Shut-Down
Procedure

(FRG–19) .
2.

To avoid the risk of electrocution, NEVER touch the inside of the Li-ion battery with bare hands
after shutting off the high voltage system. The Li-ion battery maintains charge even though the
high voltage system is shut down. PPE must always be worn when touching or working on high
voltage components.
3. Cover damaged high voltage components with insulated tape.
2-8 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.
FRG–15

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) . PPE must always be worn when touching or working on high
voltage components.
• If it is necessary to touch any of the high voltage harnesses or components you
must
always wear appropriate PPE to avoid electrical shock. PPE must always be worn
when touching or working on high voltage components. Shut down the high voltage
system by following the steps outlined in 3-3.1 High Voltage System Shut-Down
Procedure.

(FRG–19) Wait approximately ten (10) minutes for complete discharge of
the

high voltage capacitor after the high voltage system has been shut down. • NEVER assume the Q70 HYBRID is shut OFF simply because it is quiet.
•

If the READY indicator is ON the high voltage system is active.
•

If possible, be sure to check the READY indicator on the instrument cluster and
verify

that the READY indicator is OFF and the high voltage system is stopped.
FRG–16

3-1 Preparation Items
Preparation Items
Specification Purpose
PPE (personal protective
equipment):
Insulated gloves Up to 1,000V
For
protection from high voltage electri-
cal shock
Insulated shoes –
Safety

shield –
W

renches Size: 10mm
T
o remove the 12V battery terminal
bolt.
Solvent resistant protec-
tion gloves
Solvent resistant
protection shoes –
To utilize in the event of a Li-ion battery
electrolytic solution leak.
–
Absorbent pad The same pad used for internal com-
bustion engine fluids can be used. To absorb any Li-ion 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.
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)
FRG–17

3-1.3 Insulated Tools
When
performing work at locations where high voltage is applied (such as terminals) , use insulated tools
meeting 1,000V/300A specifications.
3-2 Vehicle Immobilization and Stabilization
Apply the parking brake and stabilize the vehicle with a wheel chock(s) or deflate the tires. Put support
material such as wooden blocks or utilize the Lift Airbag Equipment for rescue. • To avoid electrical shock, do not put the Lift Airbag Equipment for rescue and wheel
chock(s)
under the high voltage components and harnesses.
3-3 How to Handle a Damaged Vehicle at an Accident Scene
NOTE:
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 INFINITI Q70 HYBRID 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. AAYIA0016ZZ
FRG–18

When arriving to an incident involving an INFINITI Q70 HYBRID, 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 2-2 High Voltage-Related
and

12V-Related Component Locations and Descriptions (FRG–11) . Appropriate personal protective
equipment

(PPE) 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 procedure 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 approximately 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 approximate 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.
3-3.1 High Voltage System Shut-Down Procedure
Any of the following procedures can shut down 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 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
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) . 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.
FRG–19

• The vehicle contains parts that contain powerful magnets. If a person who is wearing a
pacemaker 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 check the READY indicator (1) in the instrument cluster, and verify that the READY indicator is off and the high voltage system is stopped.
• After the high voltage system is shut down, please wait for approximately ten (10) minutes for complete discharge of the high voltage capacitor. While waiting, do not operate
any vehicle functions.
• Remove the 12V battery negative (-) terminal and wait for 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 for three (3) minutes.
There is a possibility of sudden SRS air bag inflation due to harness short circuit or
damage and it may cause serious injuries.
• The 12V system will remain active even after the 12V battery negative (-) terminal is removed while the high voltage system is active. This is because the DC/DC converter will
not shut down and power will be supplied to the 12V system and high voltage system
continuously.
Before disconnecting the 12V battery terminal, if necessary, lower the windows, adjust the steering column,
adjust the seats, unlock the doors, open the trunk, etc. as required. Once the 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 and disconnect the 12V battery. Refer to Primary Procedure (FRG–21).
•

Remove the fuse for the high voltage control system and disconnect the 12V battery. Refer to Alter-
nate

Procedure 1 (Remove Fuses) (FRG–23) .
•

Remove the service plug and disconnect the 12V battery. Refer to Alternate Procedure 2 (Remove
Service

Plug) (FRG–25) .FRG–20