Nissan Quest E52. Instruction — part 719
HAC-6
Removal and Installation . . . . . . . . . ...
REFRIGERANT PRESSURE SENSOR . . ..
Exploded View . . . . . . . . . . . . . ...
Removal and Installation . . . . . . . . . ...
DOOR MOTOR . . . . . . . . . . . .
Exploded View . . . . . . . . . . . . . ...
FRONT MODE DOOR MOTOR . . . . . . . ...
FRONT MODE DOOR MOTOR : Removal and In-
stallation . . . . . . . . . . . . . . . .
FRONT AIR MIX DOOR MOTOR . . . . . . . .
FRONT AIR MIX DOOR MOTOR : Removal and
Installation . . . . . . . . . . . . . . . .
INTAKE DOOR MOTOR . . . . . . . . . . .
INTAKE DOOR MOTOR : Removal and Installa-
tion . . . . . . . . . . . . . . . . . .
REAR MODE DOOR MOTOR . . . . . . . . .
REAR MODE DOOR MOTOR : Removal and In-
stallation . . . . . . . . . . . . . . . .
REAR AIR MIX DOOR MOTOR . . . . . . . ..
REAR AIR MIX DOOR MOTOR : Removal and In-
stallation . . . . . . . . . . . . . . . .
PRECAUTIONS
HAC-7
< PRECAUTION >
[AUTOMATIC AIR CONDITIONING]
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PRECAUTION
PRECAUTIONS
Precaution for Supplemental Restraint System (SRS) "AIR BAG" and "SEAT BELT
PRE-TENSIONER"
INFOID:0000000009652488
The Supplemental Restraint System such as “AIR BAG” and “SEAT BELT PRE-TENSIONER”, used along
with a front seat belt, helps to reduce the risk or severity of injury to the driver and front passenger for certain
types of collision. This system includes seat belt switch inputs and dual stage front air bag modules. The SRS
system uses the seat belt switches to determine the front air bag deployment, and may only deploy one front
air bag, depending on the severity of a collision and whether the front occupants are belted or unbelted.
Information necessary to service the system safely is included in the “SRS AIR BAG” and “SEAT BELT” of this
Instruction.
WARNING:
Always observe the following items for preventing accidental activation.
• To avoid rendering the SRS inoperative, which could increase the risk of personal injury or death in
the event of a collision that would result in air bag inflation, all maintenance must be performed by
an authorized NISSAN/INFINITI dealer.
• Improper maintenance, including incorrect removal and installation of the SRS, can lead to personal
injury caused by unintentional activation of the system. For removal of Spiral Cable and Air Bag
Module, see “SRS AIR BAG”.
• Never use electrical test equipment on any circuit related to the SRS unless instructed to in this Ser-
vice Instruction. SRS wiring harnesses can be identified by yellow and/or orange harnesses or harness
connectors.
PRECAUTIONS WHEN USING POWER TOOLS (AIR OR ELECTRIC) AND HAMMERS
WARNING:
Always observe the following items for preventing accidental activation.
• When working near the Air Bag Diagnosis Sensor Unit or other Air Bag System sensors with the
ignition ON or engine running, never use air or electric power tools or strike near the sensor(s) with
a hammer. Heavy vibration could activate the sensor(s) and deploy the air bag(s), possibly causing
serious injury.
• When using air or electric power tools or hammers, always switch the ignition OFF, disconnect the
battery, and wait at least 3 minutes before performing any service.
Precautions for Removing Battery Terminal
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• When removing the 12V battery terminal, turn OFF the ignition
switch and wait at least 30 seconds.
NOTE:
ECU may be active for several tens of seconds after the ignition
switch is turned OFF. If the battery terminal is removed before ECU
stops, then a DTC detection error or ECU data corruption may
occur.
• For vehicles with the 2-batteries, be sure to connect the main bat-
tery and the sub battery before turning ON the ignition switch.
NOTE:
If the ignition switch is turned ON with any one of the terminals of
main battery and sub battery disconnected, then DTC may be
detected.
• After installing the 12V battery, always check "Self Diagnosis Result" of all ECUs and erase DTC.
NOTE:
The removal of 12V battery may cause a DTC detection error.
SEF289H
HAC-8
< SYSTEM DESCRIPTION >
[AUTOMATIC AIR CONDITIONING]
COMPONENT PARTS
SYSTEM DESCRIPTION
COMPONENT PARTS
Component Parts Location
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JMIIA1760ZZ
COMPONENT PARTS
HAC-9
< SYSTEM DESCRIPTION >
[AUTOMATIC AIR CONDITIONING]
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BLOWER UNIT ASSEMBLY
A.
Combination meter is removed
B.
Left side of rear A/C unit assembly
C.
Right side of rear A/C unit assembly
D.
Left side of instrument upper garnish E.
Left side of heater & cooling unit as-
sembly
F.
Right side of heater & cooling unit
assembly
G.
Right side of blower unit assembly
No.
Component
Function
1.
Magnet clutch
2.
Ambient sensor
3.
Exhaust gas/outside odor detecting sensor
[with ACCS (Advanced Climate Control Sys-
tem)]
HAC-14, "Exhaust Gas/Outside Odor Detecting Sensor"
4.
Refrigerant pressure sensor
HAC-13, "Refrigerant Pressure Sensor"
5.
ECM
ECM, when receiving A/C ON signal and blower fan ON signal from BCM, trans-
mits A/C compressor request signal to IPDM E/R via CAN communication ac-
cording to status of the engine and refrigerant pressure.
ECM transmits engine coolant temperature signal to combination meter via
CAN communication line.
Refer to
EC-15, "ENGINE CONTROL SYSTEM : Component Parts Location"
for detailed installation location.
6.
IPDM E/R
A/C relay is integrated in IPDM E/R. IPDM E/R operates A/C relay when receiv-
ing A/C compressor request signal from ECM via CAN communication line.
Refer to
PCS-4, "IPDM E/R : Component Parts Location"
for detailed installation
location.
7.
Rear A/C control
(with rear entertainment)
8.
Rear A/C control
(without rear entertainment)
9.
Combination meter
Combination meter transmits engine coolant temperature signal and vehicle
speed signal to A/C auto amp.
10.
Front in-vehicle sensor
HAC-13, "Front In-vehicle Sensor"
11.
Front A/C control (A/C auto amp.)
HAC-12, "Front A/C Control (A/C Auto Amp.)"
12.
BCM
BCM transmits A/C ON signal and blower fan ON signal, received from A/C auto
amp., to ECM via CAN communication line.
13.
Ionizer
[with ACCS (Advanced Climate Control Sys-
tem)]
14.
Rear in-vehicle sensor
HAC-11, "REAR A/C UNIT ASSEMBLY : Rear In-vehicle Sensor"
15.
Rear air mix door motor
HAC-11, "REAR A/C UNIT ASSEMBLY : Rear Air Mix Door Motor"
16.
Rear mode door motor
HAC-12, "REAR A/C UNIT ASSEMBLY : Rear Mode Door Motor"
17.
Rear blower motor
HAC-12, "REAR A/C UNIT ASSEMBLY : Rear Blower Motor"
18.
Sunload sensor
19.
Front mode door motor
HAC-11, "HEATER & COOLING UNIT ASSEMBLY : Front Mode Door Motor"
20.
Aspirator
HAC-10, "HEATER & COOLING UNIT ASSEMBLY : Aspirator"
21.
Front air mix door motor (Driver side)
HAC-11, "HEATER & COOLING UNIT ASSEMBLY : Front Air Mix Door Motor
(Driver side)"
22.
Front air mix door motor (Passenger side)
HAC-11, "HEATER & COOLING UNIT ASSEMBLY : Front Air Mix Door Motor
(Passenger side)"
23.
Intake sensor
HAC-11, "HEATER & COOLING UNIT ASSEMBLY : Intake Sensor"
24.
Intake door motor
HAC-10, "BLOWER UNIT ASSEMBLY : Intake Door Motor"
25.
Front blower motor
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