2015 INFINITI QX60 HYBRID Dismantling Guide

1-3 Warning and Indicator Lamp Information1. Hybrid System Warning Lamp (Orange) 2. READY Indicator (Green)
3. Master Warning Lamp (Orange or Red) 4. Hybrid System Overheated Stop Vehicle Warning (Vehicle Information Display)
Lamp Name Icon Description
READY Indicator (Green)
This lamp is on when the high voltage system is powered up and
the vehicle is ready to drive.
Master Warning Lamp
(Orange or Red)
This lamp is on when another warning lamp or message is
displayed in the instrument cluster.
Hybrid System
Warning Lamp *1 (Orange)
This lamp is on or blinking when:
• Malfunction has occurred in the high voltage system and/or
• High voltage leak to vehicle chassis and/or
• Emergency shut-off system has been activated. The shut-off system activates in the following conditions:
– Front and side collisions in which the air bags are deployed.
– Certain rear collisions.
– Certain high voltage system malfunctions.
*1: When this lamp is ON, the READY Indicator will turn OFF.
1
2 3
4
5
6
7
8 1
1/2
PWR
1234
Hybrid System
Overheated
AAYIA0263ZZ
DG–9

2. Basic High Voltage Information
2-1 Battery Information
The QX60 HYBRID utilizes two batteries in order to supply both high and low voltage.
2-1.1 12-Volt Battery• The QX60 HYBRID contains a conventional lead-acid12-volt battery.
• The 12-volt battery is located in the front of the vehicle on the left side of the engine compartment.
• The 12-volt battery is charged by the high voltage battery through the DC/DC converter.
: Vehicle front
2-1.2 High Voltage Battery • The QX60 HYBRID contains a high voltage battery.
• The high voltage battery is mounted in the cargo areaunder the 3rd row seating, enclosed in a metal case
and concealed by trim cover.
•
The high voltage battery stores approximately 144 volts DC.
• A vent hose is provided to exhaust gasses outside the vehicle if necessary.
• Air vents (A) are located on the cargo area trim panels for battery cooling.
The high voltage battery supplies power to the following: • High voltage harnesses
• DC/DC converter
• Traction motor inverter
• Traction motor
AAYIA0300ZZ
AAYIA0301ZZ
AA
AAYIA0264ZZ
DG–10

2-2 High Voltage-Related and 12-Volt-Related Component Locations and Descriptions
=DANGER
NOTE:Components with white number in black background are high voltage components.
No. Component Location Description DC/DC Converter Cargo area floor
(mounted right of
high voltage 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 vehicle’s
electric components (headlights, audio system,
etc.) .
13
457
2
6
AAYIA0284ZZ
DG–11

No. Component Location Description Service Plug Cargo area floor
(inside storage bin
behind access door) This is used to disable the high voltage system.
High VoltageBattery Cargo area floor
(under 3rd row
seating floor trim) The high voltage battery stores and outputs
DC power (Maximum voltage 144V) needed to
propel the vehicle.
Traction Motor
Engine compartment
(built-into the trans-mission)Converts three-phase alternating current (AC)
power to drive power (torque) which propels thevehicle.
Traction MotorInverter
Engine compartment
(front driver side)Converts the DC power stored in the high
voltage 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.
12-Volt Battery
Front of the vehicle
on the left side of the
engine compartmentA lead-acid battery that supplies power to the
low voltage devices.
High VoltageHarness Cargo area (on high
voltage battery) ,
under floor, enginecompartment Orange-colored power cables carry high
DC voltage between each of the high voltagecomponents.
2-3 High Voltage Battery Pack Specifications
High Voltage Battery Specifications
High voltage battery voltage 144V
Number of high voltage battery modules in the pack 3 modules (40 cells)
High voltage battery module voltage 48V each
High voltage battery dimensions
36.31 x 22.07 x 6.52 in. (922.3 x 560.5 x 165.6 mm)
High voltage battery weight 62.4 lbs (28.3 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 label shown below. All high voltage harnesses are coated in orange.
2-4.1 Warning Label
AAYIA0010ZZ
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) .
Cargo Area
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) DC/DC
Converter
HPCM
(Hybrid Powertrain Control Module)
Engine Compartment
AAYIA0112GB
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 right rear 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 (DG–17)].
Shut off the high voltage system by referring to
3-4.1 High Voltage System Shut-Down
Procedure (DG–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.
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–20)
. 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 QX60 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–37)] 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