2015 INFINITI Q50 HYBRID battery

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.
• The high voltage battery relays (SMR1 and SMR2) will automatically open to stop the electrical flow in front, side or certain rear collisions that are sufficient enough to activate the supplemental
restraint system (SRS) .
Trunk
Junction Box High Voltage Battery
System main relay 1
Service Plug (With Fuse)
System main relay 2
Transmission
Traction Motor Traction Motor
Inverter
(With built in high
voltage capacitor) Electric
Compressor DC/DC
Converter
Engine Compartment
HPCM
(Hybrid Powertrain Control Module)
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FRG–14

2-6 High Voltage Circuit Shut-Off System
This vehicle is equipped with a system to shut off the current from the high voltage battery by the following methods:
Service plug Positioned in the center area of the high voltage battery, this plug shuts offthe 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 12-volt
system and shut off high voltage from the high voltage battery.
Emergency shut-offsystem 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.
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–20)
.
2. To avoid the risk of electrocution, NEVER touch the inside of the high voltage battery with bare hands after shutting off the high voltage system. The high voltage 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

3-1 Preparation Items
Preparation Items Specification Purpose
PPE (personal protective equipment): Up to 1,000V For protection from high voltage
electrical shock.
Insulated gloves
Insulated shoes
–
Safety shield
– To protect eyes when around high
voltage components and wiring.
Safety Glasses
Leather glovesMust be able to fasten tight
around the wrist. To protect insulated gloves.
Wrenches
Size:10mm To remove the 12-volt battery
terminal bolt.
Solvent resistant protection gloves
Solvent resistant protection shoes – To utilize in the event of a high
voltage battery electrolytic solutionleak.
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 InsulatingTo 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.
FRG–17

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 Q50 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.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 an Infiniti Q50 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 12-Volt-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 never 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.
FRG–19

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
high voltage battery is deformed, broken or cracked, appropriate PPE must always be used and the high
voltage battery and high voltage components must not be touched. PPE must always be worn when
touching or working on high voltage components.
DANGER
•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.
•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 verify that the READY
indicator is off (if possible) , and the high voltage
system is stopped.
• After the high voltage system is shut down, please wait approximately ten (10) minutes for complete discharge of the high voltage capacitor. While waiting, do not operate any
vehicle functions.
NOTE:
The high voltage full discharge takes approximately ten (10) minutes.
• After shutting down the high voltage system and removing the 12-volt battery negative (-) terminal, wait at least three (3) minutes to discharge the air bag capacitor. Even though
the 12-volt 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
serious injuries.
• The 12V system will remain active even after the 12-volt battery negative (-) terminal is removed while the high voltage system is active.This is because the charging system
will not shut down and power will be supplied to the 12V system and high voltage systemcontinuously.
Before disconnecting the 12-volt 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 12-volt battery is
disconnected, power controls will not operate. FRG–20

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 12-volt battery. Refer to
Primary Procedure
(FRG–21)
.
• Disconnect the underhood fuse panel terminal connector for the high voltage control system and disconnect the 12-volt battery. Refer to
Alternate Procedure 1 (Disconnect Underhood Fuse
Panel) (FRG–24)
.
• Remove the service plug and disconnect the 12-volt battery. Refer to
Alternate Procedure 2
(Remove Service Plug) (FRG–27)
.
Primary Procedure
NOTE: Before disconnecting the 12-volt battery terminal, if necessary, lower the windows, adjust
the steering column, adjust the seats, unlock the doors, etc. Once 12-volt battery is
disconnected, power controls will not operate.
1. If possible, check the READY
indicator status in the instrument cluster. If it is on, the high
voltage system is active.
2. Place the shift selector in the Park (P) position.
3. Push the ignition switch once to turn OFF the high voltage system. Verify that the READY indicator is off
and then continue to the next steps to open the trunk for
12-volt battery negative cable access.
If the READY indicator does not turn off, refer to
Alternate Procedure 1 (Disconnect Underhood Fuse
Panel) (FRG–24)
4. If possible, keep the Infiniti Intelligent Key at least5 meters (16 feet) away from the vehicle (except to
open the trunk as noted below) .
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LOCK
ACC
(OFF)
ON
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FRG–21

6. Open the 12-volt battery service access cover.
7. Disconnect negative (-) battery cable and cover it withinsulated tape.
8. Wait approximately ten (10) minutes for complete discharge of the high voltage capacitor
after the battery cable has been disconnected.
9. Perform the first response action.
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FRG–23

Alternate Procedure 1 (Disconnect Underhood Fuse Panel)
NOTE:Before disconnecting the underhood fuse panel and the negative (-) battery cable, if
necessary, lower the windows, adjust the steering column, adjust the seats, unlock the
doors, etc. Once the underhood fuse panel and negative (-) battery cable are disconnected,
power controls will not operate. 1. Pull release handle (1) and pull up release lever (2) to open the hood.
2. Remove clips (A) and RH hood ledge cover (1) .NOTE:
: Arrow in illustration depicts vehicle front
direction.
3. Remove clips (A) and RH cowl cover (1) .
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FRG–24