INFINITI Q70 HYBRID 2018 Dismantling Guide

2-2 High Voltage-Related and 12-Volt-Related Component Locations and Descriptions
NOTE:Components with white number in black background are high voltage components.
AAYIA0338ZZ
DG–11

No. Component Location Description High Voltage Battery Trunk area (behind
rear seat back) The high voltage battery stores and outputs
DC power (Maximum voltage 400V) needed to
propel the vehicle.
DC/DC Converter Trunk area (mounted
to top of high volt-
age 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 vehi-
cle’s electric components (headlights, audio
system, etc.) .
Service Plug Trunk area (below
parcel shelf; behind
access door in trimpanel) This is used to disable the high voltage system.
12-volt Battery Trunk area (below
parcel shelf; behind
trim panel left of
high voltage battery) A lead-acid battery that supplies power to the
low voltage devices.
High VoltageHarnesses Trunk area (on high
voltage battery) ,
under floor pan,
engine compartment Orange-colored power cables carry high DC
voltage between each of the high voltagecomponents.
Electric Air Condi-
tioner Compressor Engine compart-
ment (front driverside) Air conditioner compressor
Traction MotorInverter Engine compart-
ment (right rearside) Converts the DC power stored in the high volt-
age battery to three-phase AC power and con-
trols motor torque (revolution) by regulating the
motor current. The inverter has a built in high
voltage capacitor.
Traction Motor Built-into the
transmission Converts three-phase alternating current (AC)
power to drive power (torque) which propels
the vehicle.
2-3 High Voltage Battery Pack Specifications
High Voltage Battery Specifications
High voltage battery voltage 346V (400V max.)
Number of high voltage battery modules in the pack 12
High voltage battery module voltage 28.8V each
High voltage battery dimensions 33.35 x 17.83 x 15.43 in. (847 x 453 x 392 mm)
High voltage battery weight 121.28 lbs (55 kg)
DG–12

2-4 High Voltage Safety Measures
Circuit insulation The high voltage positive (+) and negative (-) circuits are insulatedfrom 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 the label shown below. All high voltage harnesses are coated in orange.
2-4.1 Warning Labels
To avoid serious injury, keep clear of engine parts at all times. Engine may start at any time if

the start switch and the READY lamps on the instrum ent panel are "ON". Make sure both
lamps are "OFF" before working in the engine compartment. See Owners Manual.
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Pour éviter des blessures graves, assurez-vous que les témoins START SWITCH et READY

dans le tableau de bord sont éteints (OFF) avant d' entreprendre tout travail a l' intérieur du
compartiment moteur. Le moteur peut démarrer a tout moment si le contacteur d' allumage
est a la position ON et que les témoins READY du ta bleau de bord sont allumés. Assurez-vous
que les deux témonins sont éteints avant de travailler dans le compartiment moteur.
Reportez-vous au manuel du conducteur.ÉË º¦
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READY
A
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DG–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.
•
The high voltage battery relays (SMR1 and SMR2) will automatically open to stop the electrical flow in
a 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)
AAYIA0124GB
DG–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 voltagebattery) 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 (air bag deployment, etc.) 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 (DG–17)].
Shut off the high voltage system by referring to
3-4.1 High Voltage System Shut-Down
Procedure (DG–19)
.
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.
DG–15

3. Preparation for Dismantling
DANGER
•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) . 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
3-4.1 High Voltage System Shut-Down
Procedure (DG–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 it becomes necessary for the dismantler to leave the vehicle, place a “DANGER” sign [for example, refer to
5. Storing the Vehicle (DG–36)] on the vehicle to alert other people
that the vehicle contains a high voltage battery.
• 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.
DG–16

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 andwiring.
Safety Glasses
Leather glovesMust be able to fasten tight
around the wrist (worn over
insulated gloves) . 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
solution leak.
Absorbent pad The same pad used for internal combustion engine
fluids can be used.To absorb any high voltage
battery electrolytic solutionleakage.
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–17

3-2 Personal Protective Equipment (PPE) and Insulated Tools
3-2.1 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.
3-2.2 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)
3-2.3 Insulated Tools
When performing work at locations where high voltage is applied (such as terminals) , use insulated tools
meeting 1,000V/300A specifications.
3-3 Discharge Procedures
DANGER
Do not perform this procedure if the battery is damaged. If you are unsure of battery
damage, use extreme caution and wear appropriate Personal Protective Equipment (PPE) .
High voltage battery discharging must take place before dismantling. Sufficient discharging can be achieved
by following these steps. 1. Place the shift selector into the Park (P) position
2. Apply the parking brake.
3. Set wheel chocks to ensure the vehicle is completely stopped.
4. Fasten the driver seat belt and close the driver door.
5. Apply foot brake and press the ignition switch to turn the system ON. Confirm READY
indicator in instrument cluster turns ON.a. If the engine starts, leave the engine on until idling stops.
b. If the engine does NOT start, move on to next step.
6. Remove the shift lock cover (A) using a suitable tool.
7. Push down the shift lock (B) as shown in the illustration.
8. Push the shift selector button (C) and move the shift selector to Neutral (N) position (D) while holding down
the shift lock.
NOTE:
DO NOT press accelerator or foot brake after
moving the shift selector to the Neutral (N)
position. Otherwise high-voltage battery will
start to be charged.
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DG–18

9. Release the parking brake.
10. Turn ON electric devices such as headlamps, A/C (set to the coldest temperature) and rear
window defogger to discharge the high voltage battery. Allow approximately 15 minutes to
discharge. Discharge is complete when the READY
indicator (B) (green) turns OFF and
the hybrid system warning indicator (C) (orange) turns ON.
11. Press the ignition switch (A) to turn the system OFF.
Please contact following number if the vehicle could not be discharged. • 1-800-662-6200 (US) or 1-800-361-4792 (Canada)
• Hours of operation are 8am-5pm (Monday-Friday) Eastern, Central and Pacific time zones.
3-4 How to Handle a Damaged Vehicle
3-4.1 High Voltage System Shut-Down Procedure
Any of the following procedures can shut down the high voltage system. The dismantling operation canonly
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.
DANGER
•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) . Appropriate 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-voltagecomponents.
TGAAYIA0014ZZ
DG–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 thevehicle.
• 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 12-volt battery negative (-) terminal and wait for 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 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 12-volt 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 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.
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
(DG–21)
.
• Remove the fuse for the high voltage control system and disconnect the 12-volt battery. Refer to
Alternate Procedure 1 (Remove Fuses) (DG–23).
• Remove the service plug and disconnect the 12-volt battery. Refer to
Alternate Procedure 2
(Remove Service Plug) (DG–25)
.
DG–20