ignition INFINITI Q50 HYBRID 2014 Dismantling Guide

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 theoutput 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-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 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 (DG–17)) .
Shut off the high voltage system by referring to
3-3.1 High Voltage System Shut-Down
Procedure (DG–20)
.
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.
DG–15

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.
DG–18

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

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 (DG–21).
• Disconnect the underhood fuse panel terminal connector for the high voltage control system and disconnect the 12V battery. Refer to
Alternate Procedure 1 (Disconnect Underhood Fuse
Panel) (DG–24)
.
• Remove the service plug and disconnect the 12V battery. Refer to
Alternate Procedure 2
(Remove Service Plug) (DG–27)
.
Primary Procedure
NOTE:
Before disconnecting the 12V battery terminal, if necessary, lower the windows, adjust the
steering column, adjust the seats, unlock the doors, etc. Once 12V 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
12V battery negative cable access.
If the READY indicator does not turn off, refer to
Alternate Procedure 1 (Disconnect Underhood Fuse
Panel) . (DG–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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DG–21

5. Open the trunk using any of the following:NOTE:
The trunk release power cancel switch must be
in the ON position in order for the trunk to be
opened using any of the methods below.
a. push-button switch on the lower LH side of theinstrument panel (ensure that the trunk release
power cancel switch is in the ON position) .
b. trunk button on the Infiniti Intelligent Key [press for longer than one (1) second].
c. trunk open request switch (located above license plate)*.
Method Shift Selector Position Ignition Switch Status
a P or N Any
b P OFF
c* Any Any
* You must have the Infiniti Intelligent Key within approximately 1 meter (3 feet) range of trunk request switch
to use the trunk open request switch function.
OFF
ON
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DG–22

Alternate Procedure 2 (Remove Service Plug)
•Do not remove the service plug without always wearing appropriate Personal
Protective Equipment (PPE) to help protect the dismantler from serious injury or death
by electrical shock.
•
Immediately cover the service plug socket with insulated tape. The Li-ion battery
retains high voltage power even when the service plug is removed. To avoid electric
shock, NEVER touch the terminals inside the socket.
To avoid unintended reinstallation and risk of electrical shock and severe personal injury
or death, the dismantler should carry the service plug on his/her person while work is in progress.
NOTE: Before disconnecting the 12V battery terminal, if necessary, lower the windows, adjust the
steering column, adjust the seats, unlock the doors, etc. Once 12V 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. Then verify whether the READY indicator
is off.
If the READY indicator does not turn off, continue to the
next steps to open the trunk for 12V battery negative
cable access.
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LOCK
ACC
(OFF)
ON
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DG–27

c. trunk open request switch (located abovelicense plate)*.
Method Shift Selector Position Ignition Switch Status
a P or N Any
b P OFF
c* Any Any
* You must have the Infiniti Intelligent Key within approximately 1 meter (3 feet) range of trunk request switch
to use the trunk open request switch function.
NOTE:
If the electrical release does not work, the trunk will have to be forced open.
6. Open the 12V battery service access cover.
7. Disconnect negative (-) battery cable and cover it withinsulated tape.
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DG–29

3-3.3 Water Submersion
Damage level of submerged vehicle may not be apparent. Handling a submerged
vehicle without appropriate Personal Protective Equipment (PPE) will result in serious
injury or death from electrical shock.
•The ignition switch of the submerged vehicle must be turned OFF first, if possible.
Then the vehicle must be completely out of the water and drained to avoid electrical shock.
•
Always wear appropriate Personal Protective Equipment (PPE) and remove/drain
water before removing the service plug when working on a vehicle after a fire or
submersion to avoid electrical shock.
•
If the vehicle is in the water, to avoid electrical shock NEVER touch the high voltage
components, harnesses or service plug. PPE must always be worn when touching or
working on high voltage components.
3-3.4 Vehicle Fire
• Always utilize full Personal Protective Equipment (PPE) and self-contained breathing apparatus during fire fighting operations. Smoke from a Q50 HYBRID vehicle fire is similar
to smoke from a conventional vehicle fire.
• In the case of extinguishing a fire with water, large amounts of water from a fire hydrant (if possible) must be used. DO NOT extinguish fire with a small amount of water.
In the event of a small fire, a Type ABC fire extinguisher may be used for an electrical fire
caused by wiring harnesses, electrical components, etc. or oil fire.
In case of vehicle fire, contact fire department immediately and extinguish the fire if possible. If you must
walk away from the vehicle, notify an appropriate responder or a rescue person of the fact that the vehicle is
a hybrid vehicle that contains a high voltage system and warn all others. DG–34

4. Jump Starting
To start the hybrid system with a booster battery, the instructions and precautions below must be followed.
If done incorrectly, jump starting can lead to a 12V battery explosion, resulting in severe
personal injury or death. It could also damage your vehicle.
Jump starting provides power to the 12V system to allow the electrical systems to operate. The electrical
systems must be operating to allow the Li-ion battery to be charged. Jump starting does not charge the
Li-ion battery.
Discharged 12V battery may cause the following issues: • The instrument cluster cannot be displayed while the ignition switch is turned ON. (The hybridsystem cannot start.)
• Headlamps, horn, etc. are weak.
•To avoid electrical shock, the high voltage Li-ion battery CANNOT be jump started.
• Explosive hydrogen gas is always present in the vicinity of the 12V battery. Keep all sparks and flames away from the 12V battery. Make sure the vent tube is mounted.
• Do not allow battery fluid to come into contact with eyes, skin, clothing or painted surfaces. Battery fluid is a corrosive sulfuric acid solution that can cause severe burns.
If the fluid comes into contact with anything, immediately flush the contacted area
with water.
• The booster battery must be rated at 12 volts. Use of an improperly rated battery can damage the vehicle.
• Whenever working on or near a 12V battery, always wear suitable eye protectors (for example, goggles or industrial safety spectacles) and remove rings, metal bands, or
any other jewelry. Do not lean over the 12V battery when jump starting.
• Do not attempt to jump start a frozen battery. It could explode and cause serious injury.
• Q50 HYBRID is equipped with an automatic cooling fan. It could come on at any time. Keep hands and other objects away from it.
• Always follow the jump starting instructions below. Failure to do so could result in damage to the charging system and cause personal injury.
DG–36

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