engine INFINITI Q50 HYBRID 2014 Dismantling Guide

Table of Contents
FOREWORD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . DG–2
INFINITI EMERGENCY CONTACT INFORMATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . DG–2
IMPORTANT INFORMATION ABOUT THIS MANUAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . DG–2
1. ABOUT THE Q50 HYBRID . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . DG–5
1-1 Q50 HYBRID IDENTIFICATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . DG–6
1-1.1. EXTERIOR AND ENGINE COMPARTMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . DG–6
1-1.2. INTERIOR . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . DG–7
1-2 VEHICLE IDENTIFICATION NUMBER (VIN) LAYOUT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . DG–8
1-3 WARNING AND INDICATOR LAMP INFORMATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . DG–9
2. BASIC HIGH VOLTAGE INFORMATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . DG–10
2-1 BATTERY INFORMATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . DG–10
2-1.1. 12V BATTERY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . DG–10
2-1.2. LI-ION BATTERY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . DG–10
2-2 HIGH VOLTAGE-RELATED AND 12V-RELATED COMPONENT LOCATIONS AND DESCRIPTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . DG–11
2-3 LI-ION BATTERY PACK SPECIFICATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . DG–12
2-4 HIGH VOLTAGE SAFETY MEASURES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . DG–13 2-4.1. WARNING LABEL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . DG–13
2-5 HIGH VOLTAGE SAFETY SYSTEM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . DG–14
2-6 HIGH VOLTAGE CIRCUIT SHUT-OFF SYSTEM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . DG–15
2-7 PREVENTING ELECTRICAL SHOCK . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . DG–15
3. PREPARATION FOR DISMANTLING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . DG–16
3-1 PREPARATION ITEMS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . DG–17
3-2 PERSONAL PROTECTIVE EQUIPMENT (PPE) AND INSULATED TOOLS . . . . . . . . . . . . . DG–18 3-2.1. PERSONAL PROTECTIVE EQUIPMENT (PPE) PROTECTIVE WEAR CONTROL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . DG–18
3-2.2. DAILY INSPECTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . DG–18
3-2.3. INSULATED TOOLS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . DG–18
3-2.4. DISCHARGE PROCEDURES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . DG–18
3-3 HOW TO HANDLE A DAMAGED VEHICLE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . DG–20 3-3.1. HIGH VOLTAGE SYSTEM SHUT-DOWN PROCEDURE . . . . . . . . . . . . . . . . . . . . . DG–20
3-3.2. CUTTING THE VEHICLE BODY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . DG–31
3-3.3. WATER SUBMERSION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . DG–34
3-3.4. VEHICLE FIRE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . DG–34
3-3.5. LI-ION BATTERY DAMAGE AND FLUID LEAKS . . . . . . . . . . . . . . . . . . . . . . . . . . . DG–35
DG–3

1. About the Q50 HYBRID
This hybrid electric vehicle (HEV) uses two types of batteries. One is a 12V battery that is the same as the
battery in vehicles powered by internal combustion engines. The 12V battery is located in the rear of the
vehicle with battery cable access through the trunk area. The other is the Lithium-ion (Li-ion) battery (high
voltage) for the traction motor which propels the vehicle. The Li-ion battery is located behind the rear
seat back with service plug access through the trunk area.
The high voltage Li-ion battery is recharged with an on-board DC/DC converter and generator powered by
the engine. Additionally, the vehicle system can recharge the Li-ion battery by converting driving force
into electricity while the vehicle is decelerating or being driven downhill. This is called regenerative charging.DG–5

1-1 Q50 HYBRID IDENTIFICATION
1-1.1 Exterior and Engine Compartment
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No. Component Location Description Traction Motor Inverter
Engine compartment
(rear passengerside)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
transmission Converts three-phase alternating current (AC)
power to drive power (torque) which propels
the vehicle.
Lithium-ion (Li-ion)Battery
Trunk area
(behind rear seatback) 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 battery) 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 (left side
behind trim panel) A lead-acid battery that supplies power to the
low voltage devices.
High VoltageHarnesses Trunk area
(on Li-ion 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 compartment
(front driver side)Air conditioner compressor
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 modules (96 cells)
Li-ion battery module voltage 28.8V each
Li-ion battery dimensions
29.63 x 17.81 x 14.85 in. (752.5 x 452.4 x 377.1 mm)
Li-ion battery weight 108.05 lbs (49 kg)
DG–12

3-1 Preparation Items
Preparation Items Specification Purpose
PPE (personal protective equipment):
Insulated gloves
Up to 1,000V For protection from high voltage
electrical shock
Insulated shoes
–
Safety shield
–
Wrenches
Size:10mm To remove the 12V battery terminal bolt.
Solvent resistant
protection 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 combustion engine fluids can beused. To absorb any Li-ion battery electrolytic
solution leakage.
Standard fire fightingequipment 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.
3-2.4 Discharge 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.
Li-ion 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 immobilized.
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 the idling stops.
b. If the engine does NOT start, move on to next step.
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6. Remove the shift lock cover (A) using a suitable tool.
7. Push down the shift lock (B) using mechanical keyas shown in the illustration.
8. Push the shift selector button (C) and move the shift selector to the 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 Li-ion battery will start to becharged.
NOTE:
The engine must not be running at this time. If the engine has restarted, repeat the
previous steps.
9. Release the parking brake.
10. Unbuckle the seat belt and open the driver door. The READY
indicator should remain ON
and the engine should not be running.
11. Turn ON electric devices such as headlamps, A/C (set to the coldest temperature) and rear window defogger to discharge the high voltage battery. Discharge is complete when the READY
indicator (B) (green) turns OFF, and the hybrid system warning indicator (C) (orange)
turns ON.
12. Move shift selector into the Park (P) position and 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.
A
B
C
D
A
B
C
LOCK
ACC
(OFF)
ON
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DG–19

3-3.5 Li-ion Battery Damage and Fluid Leaks
The Li-ion battery contains electrolyte solution. To avoid exposure to electrolyte solution
and serious personal injury, always wear appropriate solvent resistant Personal Protective
Equipment (PPE) and read the following precautions:
• Electrolyte solution is a skin irritant.
• Electrolyte solution is an eye irritant – If contact with eyes, rinse with plenty of water andsee a doctor immediately.
• If electrolyte leak occurs, wear appropriate solvent resistant PPE and use a dry cloth to clean up the spilled electrolyte. Be sure to adequately ventilate the area.
• Electrolyte solution is highly flammable
• Electrolyte liquid or fumes that have come into contact with water vapors in the air will create an oxidized substance. This substance may irritate skin and eyes. In these cases,
rinse with plenty of water and see a doctor immediately.
• Electrolyte fumes (when inhaled) can cause respiratory irritation and acute intoxication. Move to fresh air and wash mouth with water. See a doctor immediately.
In cases of battery case breach or electrolyte leakage, contact the fire department immediately. If you must
walk away from the vehicle, notify an appropriate responder of the fact that the vehicle is a hybrid vehicle
and contains a high voltage system and warn all others.
Li-ion Battery Electrolyte Solution Characteristics: • Clear in color
• Sweet odor
• Similar viscosity to water
• Since the Li-ion battery is made up of many small sealed battery modules, electrolyte solutionleakage should be minimal.
NOTE:
Other fluids in the vehicle (such as engine oil, washer fluid, brake fluid, coolant, etc.) are
the same as those in a conventional vehicle.
DG–35

4-1 Jump Starting Procedures
NOTE:Jumper cable connections under the hood of the Q50 HYBRID are not connected directly to
a battery. They are connected to chassis ground and a fuse box terminal. Refer to the
following instructions and the above illustration.
1. If the booster battery is in another vehicle (A) , position the two vehicles (A and B) to bring the12V battery and fuse box into close proximity to each other.
DO NOT allow the two vehicles to touch.
2. Apply the parking brake. Move the selector lever the P (Park) position. Switch off all unnecessary electrical systems (headlights, heater, air conditioner, etc.) .
3. Remove fuse box cover on the Q50 HYBRID and connect jumper cables in the sequence as illustrated ( ) .
• Always connect positive (+) to positive (+) and negative (-) to body ground (for example,
as illustrated) , not to the 12V battery.
• Make sure the jumper cables do not touch moving parts in the engine compartment and that the cable clamps do not contact any other metal.
• If the hybrid system does not start right away, push the ignition switch to the OFF position and wait approximately ten (10) seconds before trying again.
4. Start the engine of the booster vehicle (A) and let it run for a few minutes.
5. Start the hybrid system of the vehicle being jump started (B) .
6. After starting the hybrid system, carefully disconnect the negative cable and then the positive cable ( ) .
7. Reinstall the fuse box cover.
NOTE:
If it is not possible to turn the hybrid system ON by following this procedure, contact
an INFINITI retailer immediately.
A
3
3
B
4
4
2
2
1
1
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DG–37

35. Follow the procedure below to remove the battery pack from inside the trunk room.a. Attach carabiners (A) of sufficient capacity to hold battery weight, in the positions as shown
in the figure, then connect a belt slinger (B) to it.
Touching high voltage components without wearing appropriate Personal Protective
Equipment (PPE) will cause electrocution.
b. Slightly lift battery pack by using an enginecrane (A) .
Touching high voltage components without wearing
appropriate Personal Protective Equipment (PPE) will
cause electrocution.
c. Remove the bracket RH (1) .
ABB
A
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A
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1
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DG–52