Infiniti FX35 / FX45. Manual — part 101
AT-332
< SERVICE INFORMATION >
SERVICE DATA AND SPECIFICATIONS (SDS)
A/T Fluid Temperature Sensor
INFOID:0000000001327418
Turbine Revolution Sensor
INFOID:0000000001327419
Vehicle Speed Sensor A/T (Revolution Sensor)
INFOID:0000000001327420
Reverse Brake
INFOID:0000000001327421
Total End Play
INFOID:0000000001327422
Name
Condition
CONSULT-III “DATA MONITOR” (Approx.)
Resistance (Approx.)
A/T fluid temperature sensor 1
0
°
C (32
°
F)
3.3 V
15 k
Ω
20
°
C (68
°
F)
2.7 V
6.5 k
Ω
80
°
C (176
°
F)
0.9 V
0.9 k
Ω
A/T fluid temperature sensor 2
0
°
C (32
°
F)
3.3 V
10 k
Ω
20
°
C (68
°
F)
2.5 V
4 k
Ω
80
°
C (176
°
F)
0.7 V
0.5 k
Ω
Name
Condition
Data (Approx.)
Turbine revolution sensor 1
When running at 50 km/h (31 MPH) in 4th speed with the closed throttle po-
sition signal OFF.
1.3 kHz
Turbine revolution sensor 2
When moving at 20 km/h (12 MPH) in 1st speed with the closed throttle po-
sition signal OFF.
Name
Condition
Data (Approx.)
Revolution sensor
When moving at 20 km/h (12 MPH).
185 Hz
Model code number
91X3A, 91X3B
96X1C
Number of drive plates
6
Number of driven plates
6
Clearance
mm (in)
Standard
0.7 - 1.1 (0.028 - 0.043)
Total end play
mm (in)
0.25 - 0.55 (0.0098 - 0.0217)
ATC-1
AIR CONDITIONER
C
D
E
F
G
H
I
K
L
M
SECTION
ATC
A
B
ATC
N
O
P
CONTENTS
AUTOMATIC AIR CONDITIONER
SERVICE INFORMATION . . . . . . .
PRECAUTIONS . . . . . . . . . . . . ...
Precaution Necessary for Steering Wheel Rota-
tion After Battery Disconnect . . . . . . . . .....
Precaution for Procedure without Cowl Top Cover
. ..
Precaution for Working with HFC-134a (R-134a) . ..
General Refrigerant Precaution . . . . . . . ....
Precaution for Refrigerant Connection . . . . . ..
Precaution for Service of Compressor . . . . . ..
Precaution for Service Equipment . . . . . . .....
Precaution for Leak Detection Dye . . . . . . .
PREPARATION . . . . . . . . . . . . ..
Special Service Tool . . . . . . . . . . . ...
HFC-134a (R-134a) Service Tool and Equipment
Commercial Service Tool . . . . . . . . . .
REFRIGERATION SYSTEM . . . . . . . ..
Refrigerant Cycle . . . . . . . . . . . . .
Refrigerant System Protection . . . . . . . .
V-6 Variable Displacement Compressor . . . . .
Component Part Location . . . . . . . . . ...
LUBRICANT . . . . . . . . . . . . . ...
Maintenance of Lubricant Quantity in Compressor
AIR CONDITIONER CONTROL . . . . . . .
Description of Air Conditioner LAN Control Sys-
tem . . . . . . . . . . . . . . . . . . ..
System Construction . . . . . . . . . . . ...
Description of Control System . . . . . . . . .
Control Operation . . . . . . . . . . . . .
Fail-Safe Function . . . . . . . . . . . . ...
Discharge Air Flow . . . . . . . . . . . . ..
System Description . . . . . . . . . . . . .
CAN Communication System Description . . . ...
TROUBLE DIAGNOSIS . . . . . . . . . .
CONSULT-III Function . . . . . . . . . . .
How to Perform Trouble Diagnosis for Quick and
Accurate Repair . . . . . . . . . . . . . ...
Component Parts and Harness Connector Loca-
tion . . . . . . . . . . . . . . . . . . ...
Schematic . . . . . . . . . . . . . . . .
Wiring Diagram - A/C - . . . . . . . . . . .
Auto Amp. Terminal and Reference Value . . . ..
Self-Diagnosis Function . . . . . . . . . . ...
Operational Check . . . . . . . . . . . . ...
Power Supply and Ground Circuit for Auto Amp . .
LAN System Circuit . . . . . . . . . . . . .
Mode Door Motor Circuit . . . . . . . . . . .
Air Mix Door Motor Circuit . . . . . . . . . ...
Air Mix Door Motor PBR Circuit . . . . . . . ...
Intake Door Motor Circuit . . . . . . . . . . .
Blower Motor Circuit . . . . . . . . . . . .
Magnet Clutch Circuit . . . . . . . . . . . ..
Insufficient Cooling . . . . . . . . . . . . ..
Insufficient Heating . . . . . . . . . . . . ..
Noise . . . . . . . . . . . . . . . . . ...
Self-Diagnosis . . . . . . . . . . . . . . .
Memory Function . . . . . . . . . . . . . .
Ambient Sensor Circuit . . . . . . . . . . .
In-vehicle Sensor Circuit . . . . . . . . . . ..
Sunload Sensor Circuit . . . . . . . . . . .
Intake Sensor Circuit . . . . . . . . . . . ...
CONTROLLER . . . . . . . . . . . . ..
Removal and Installation of A/C and AV Switch . ..
AUTO AMP . . . . . . . . . . . . . .
Removal and Installation of Unified Meter and A/C
Amp . . . . . . . . . . . . . . . . . . .
AMBIENT SENSOR . . . . . . . . . . ..
Removal and Installation . . . . . . . . . . .
IN-VEHICLE SENSOR . . . . . . . . .
Removal and Installation . . . . . . . . . ...
ATC-2
Removal and Installation . . . . . . . . . ...
INTAKE SENSOR . . . . . . . . . . .
Removal and Installation . . . . . . . . . ...
BLOWER UNIT . . . . . . . . . . . .
Removal and Installation . . . . . . . . . ...
Disassembly and Assembly . . . . . . . . ...
BLOWER MOTOR . . . . . . . . . . ...
Removal and Installation . . . . . . . . . ...
INTAKE DOOR MOTOR . . . . . . . . ..
Removal and Installation . . . . . . . . . ...
IN-CABIN MICROFILTER . . . . . . . .
Removal and Installation . . . . . . . . . ...
HEATER & COOLING UNIT ASSEMBLY . ...
Removal and Installation . . . . . . . . . ...
Disassembly and Assembly . . . . . . . . ...
MODE DOOR MOTOR . . . . . . . . .
Removal and Installation . . . . . . . . . ...
AIR MIX DOOR MOTOR . . . . . . . . ..
Removal and Installation . . . . . . . . . ...
HEATER CORE . . . . . . . . . . . ...
Removal and Installation . . . . . . . . . ...
DUCTS AND GRILLES . . . . . . . . .
Removal and Installation . . . . . . . . . ...
REFRIGERANT LINES . . . . . . . . .
HFC-134a (R-134a) Service Procedure . . . .
Component . . . . . . . . . . . . . . ...
Removal and Installation of Compressor . . . ..
Removal and Installation of Compressor Clutch ...
Removal and Installation of Low-Pressure Flexi-
ble Hose . . . . . . . . . . . . . . . .
Removal and Installation of High-pressure Flexi-
ble Hose . . . . . . . . . . . . . . . .
Removal and Installation of Low-Pressure Pipe 1
(Engine Compartment) . . . . . . . . . . ..
Removal and Installation of High-pressure Pipe 1
and 2 (Engine Compartment) . . . . . . . .
Removal and Installation of Low-Pressure Pipe 2
and High-pressure Pipe 3 . . . . . . . . . .
Removal and Installation of Liquid Tank . . . ...
Removal and Installation of Condenser . . . .
Removal and Installation of Refrigerant Pressure
Sensor . . . . . . . . . . . . . . . . ...
Removal and Installation of Evaporator . . . .
Removal and Installation of Expansion Valve . ...
Checking of Refrigerant Leaks . . . . . . . ..
Checking System for Leaks Using the Fluorescent
Leak Detector . . . . . . . . . . . . . .
Dye Injection . . . . . . . . . . . . . . .
Electrical Leak Detector . . . . . . . . . .
SERVICE DATA AND SPECIFICATIONS
(SDS) . . . . . . . . . . . . . . . .
Compressor . . . . . . . . . . . . . . ..
Lubricant . . . . . . . . . . . . . . . ...
Refrigerant . . . . . . . . . . . . . . .
Engine Idling Speed . . . . . . . . . . . ..
PRECAUTIONS
ATC-3
< SERVICE INFORMATION >
C
D
E
F
G
H
I
K
L
M
A
B
ATC
N
O
P
SERVICE INFORMATION
PRECAUTIONS
Precaution for Supplemental Restraint System (SRS) "AIR BAG" and "SEAT BELT
PRE-TENSIONER"
INFOID:0000000001612929
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 “SUPPLEMENTAL RESTRAINT SYS-
TEM” and “SEAT BELTS” of this Service Manual.
WARNING:
• To avoid rendering the SRS inoperative, which could increase the risk of personal injury or death in
the event of a collision which 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 the “SUPPLEMENTAL RESTRAINT SYSTEM”.
• Do not use electrical test equipment on any circuit related to the SRS unless instructed to in this
Service Manual. SRS wiring harnesses can be identified by yellow and/or orange harnesses or har-
ness connectors.
Precaution Necessary for Steering Wheel Rotation After Battery Disconnect
INFOID:0000000001612931
NOTE:
• This Procedure is applied only to models with Intelligent Key system and NVIS/IVIS (NISSAN/INFINITI
VEHICLE IMMOBILIZER SYSTEM - NATS).
• Remove and install all control units after disconnecting both battery cables with the ignition knob in the
″
LOCK
″
position.
• Always use CONSULT-III to perform self-diagnosis as a part of each function inspection after finishing work.
If DTC is detected, perform trouble diagnosis according to self-diagnostic results.
For models equipped with the Intelligent Key system and NVIS/IVIS, an electrically controlled steering lock
mechanism is adopted on the key cylinder.
For this reason, if the battery is disconnected or if the battery is discharged, the steering wheel will lock and
steering wheel rotation will become impossible.
If steering wheel rotation is required when battery power is interrupted, follow the procedure below before
starting the repair operation.
OPERATION PROCEDURE
1.
Connect both battery cables.
NOTE:
Supply power using jumper cables if battery is discharged.
2.
Use the Intelligent Key or mechanical key to turn the ignition switch to the
″
ACC
″
position. At this time, the
steering lock will be released.
3.
Disconnect both battery cables. The steering lock will remain released and the steering wheel can be
rotated.
4.
Perform the necessary repair operation.
5.
When the repair work is completed, return the ignition switch to the
″
LOCK
″
position before connecting
the battery cables. (At this time, the steering lock mechanism will engage.)
6.
Perform a self-diagnosis check of all control units using CONSULT-III.
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