2005 INFINITI FX35 automatic transmission

ATC-1
AUTOMATIC AIR CONDITIONER
J AIR CONDITIONER
CONTENTS
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AUTOMATIC AIR CONDITIONER
PRECAUTIONS .......................................................... 5
Precautions for Supplemental Restraint System
(SRS) “AIR BAG” and “SEAT BELT PRE-TEN-
SIONER” ............................................................. ..... 5
Precautions Necessary for Steering Wheel Rotation
After Battery Disconnect ..................................... ..... 5
OPERATION PROCEDURE ............................ ..... 5
Precautions for Procedures without Cowl Top Cover ..... 6
Precautions for Working with HFC-134a (R-134a) ..... 6
CONTAMINATED REFRIGERANT .................. ..... 7
General Refrigerant Precautions ......................... ..... 7
Precautions for Refrigerant Connection .............. ..... 8
ABOUT ONE-TOUCH JOINT ........................... ..... 8
FEATURES OF NEW TYPE REFRIGERANT
CONNECTION ................................................. ... 10
O-RING AND REFRIGERANT CONNECTION .... 11
Precautions for Servicing Compressor ................ ... 13
Precautions for Service Equipment ..................... ... 13
RECOVERY/RECYCLING EQUIPMENT ......... ... 13
ELECTRONIC LEAK DETECTOR ................... ... 13
VACUUM PUMP .............................................. ... 14
MANIFOLD GAUGE SET ................................. ... 14
SERVICE HOSES ............................................ ... 14
SERVICE COUPLERS ..................................... ... 15
REFRIGERANT WEIGHT SCALE ................... ... 15
CHARGING CYLINDER ................................... ... 15
Precautions for Leak Detection Dye .................... ... 16
IDENTIFICATION ............................................. ... 16
IDENTIFICATION LABEL FOR VEHICLE ........ ... 16
PREPARATION ...................................................... ... 17
Special Service Tools .......................................... ... 17
HFC-134a (R-134a) Service Tools and Equipment ... 18
Commercial Service Tools ................................... ... 20
REFRIGERATION SYSTEM .................................. ... 21
Refrigerant Cycle ................................................ ... 21
REFRIGERANT FLOW .................................... ... 21
FREEZE PROTECTION .................................. ... 21
Refrigerant System Protection ............................ ... 21
REFRIGERANT PRESSURE SENSOR .......... ... 21
PRESSURE RELIEF VALVE ............................ ... 21 V-6 Variable Displacement Compressor ..............
... 22
GENERAL INFORMATION .............................. ... 22
DESCRIPTION ................................................. ... 23
Component Layout .............................................. ... 26
LUBRICANT ........................................................... ... 27
Maintenance of Lubricant Quantity in Compressor ... 27
LUBRICANT ..................................................... ... 27
LUBRICANT RETURN OPERATION ............... ... 27
LUBRICANT ADJUSTING PROCEDURE FOR
COMPONENTS REPLACEMENT EXCEPT
COMPRESSOR ............................................... ... 28
LUBRICANT ADJUSTING PROCEDURE FOR
COMPRESSOR REPLACEMENT .................... ... 29
AIR CONDITIONER CONTROL ............................ ... 30
Description of Air Conditioner LAN Control System ... 30
System Construction ........................................... ... 30
OPERATION ..................................................... ... 30
TRANSMISSION DATA AND TRANSMISSION
ORDER ............................................................ ... 31
AIR MIX DOOR CONTROL (AUTOMATIC TEM-
PERATURE CONTROL) .................................. ... 32
FAN SPEED CONTROL ................................... ... 32
INTAKE DOOR CONTROL .............................. ... 32
OUTLET DOOR CONTROL ............................. ... 32
MAGNET CLUTCH CONTROL ........................ ... 33
SELF-DIAGNOSIS SYSTEM ........................... ... 33
Description of Control System ............................. ... 34
Control Operation ................................................ ... 34
DISPLAY SCREEN ........................................... ... 34
AUTO SWITCH ................................................ ... 35
TEMPERATURE SWITCH (POTENTIO TEM-
PERATURE CONTROL) (DRIVER SIDE) ........ ... 35
TEMPERATURE SWITCH (POTENTIO TEM-
PERATURE CONTROL) (PASSENGER SIDE) ... 35
RECIRCULATION (REC) SWITCH .................. ... 35
FRESH (FRE) SWITCH ................................... ... 35
DEFROSTER (DEF) SWITCH .......................... ... 35
REAR WINDOW DEFOGGER SWITCH .......... ... 35
OFF SWITCH ................................................... ... 35
A/C SWITCH .................................................... ... 35

ATC-32
AIR CONDITIONER CONTROL
Revision: 2005 July 2005 FX
Stop Signal:
At the end of each transmission, a stop operation, in-operation, or internal malfunction message is delivered to
the unified meter and A/C amp. This completes one data transmission and control cycle.
AIR MIX DOOR CONTROL (AUTOMATIC TEMPERATURE CONTROL)
The air mix door is automatically controlled so that in-vehicle temperature is maintained at a predetermined
value by the temperature setting, ambient temperature, in-vehicle temperature and amount of sunload.
FAN SPEED CONTROL
Blower speed is automatically controlled by the temperature setting, ambient temperature, in-vehicle tempera-
ture, intake temperature, amount of sunload and air mix door position.
With pressing AUTO switch, the blower motor starts to gradually increase air flow volume.
When engine coolant temperature is low, the blower motor operation is delayed to prevent cool air from flow-
ing.
INTAKE DOOR CONTROL
The intake doors are automatically controlled by the temperature setting, ambient temperature, in-vehicle tem-
perature, intake temperature, amount of sunload and ON-OFF operation of the compressor.
OUTLET DOOR CONTROL
The outlet door is automatically controlled by the temperature setting, ambient temperature, in-vehicle temper-
ature, intake temperature and amount of sunload.
RJIA1749E

REMOTE KEYLESS ENTRY SYSTEM BL-59
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Refer to AV- 6 0 , "SETTING SCREEN" . (without navigation system)
Refer to AV- 9 4 , "
Vehicle Electronic Systems" . (with navigation system)
Panic Alarm Operation
When key switch is OFF (when ignition key is not inserted in key cylinder), BCM turns on and off horn and
headlamp intermittently with input of PANIC ALARM signal from key fob.
The alarm automatically turns off after 25 seconds or when BCM receives any signal from key fob.
Panic alarm operation mode can be changed using “PANIC ALARM SET” mode in “WORK SUPPORT”.
Refer to BL-68, "
Work Support" .
For detailed description, refer to BL-186, "
VEHICLE SECURITY (THEFT WARNING) SYSTEM" .
Keyless Power Window Down (Open) Operation
When key fob unlock switch is turned ON with ignition switch OFF, and key fob unlock switch is detected to be
on continuously for 3 seconds, the driver's door and passenger's door power windows are simultaneously
opened.
Power window is operated to open and the operation continues as long as the key fob unlock switch is
pressed.
Keyless power window down operation mode can be changed using “PW DOWN SET” mode in “WORK SUP-
PORT”. Refer to BL-68, "
Work Support"
Room Lamp and Ignition Key Ring Illumination Operation
When the following conditions come:

condition of interior lamp switch is DOOR position;

door switch OFF (when all the doors are closed);
Remote keyless entry system turns on interior lamp (for 30 seconds) with input of UNLOCK signal from key
fob. For detailed description, refer to LT- 1 5 9 , "
INTERIOR ROOM LAMP" .
CAN Communication System DescriptionAIS004MC
CAN (Controller Area Network) is a serial communication line for real time application. It is an on-vehicle mul-
tiplex communication line with high data communication speed and excellent error detection ability. Many elec-
tronic control units are equipped onto a vehicle, and each control unit shares information and links with other
control units during operation (not independent). In CAN communication, control units are connected with 2
communication lines (CAN H line, CAN L line) allowing a high rate of information transmission with less wiring.
Each control unit transmits/receives data but selectively reads required data only.
CAN Communication UnitAIS004RM
Refer to LAN-30, "CAN COMMUNICATION" .

BASIC SERVICE PROCEDURE EC-85
[VQ35DE]
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Idle Mixture Ratio AdjustmentABS00E91
PREPARATION
1. Make sure that the following parts are in good order.

Battery

Ignition system

Engine oil and coolant levels

Fuses

ECM harness connector

Va c u u m h o s e s

Air intake system
(Oil filler cap, oil level gauge, etc.)

Fuel pressure

Engine compression

Throttle valve

Evaporative emission system
2. On air conditioner equipped models, checks should be carried out while the air conditioner is OFF.
3. On automatic transmission equipped models, when checking idle rpm, ignition timing and mixture ratio, checks should be carried out while selector lever is in P or N position.
4. When measuring CO percentage, insert probe more than 40 cm (15.7 in) into tail pipe.
5. Turn OFF headlamp, heater blower, rear window defogger.
6. Keep front wheels pointed straight ahead.

DTC P1574 ASCD VEHICLE SPEED SENSOR EC-607
[VQ35DE]
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DTC P1574 ASCD VEHICLE SPEED SENSORPFP:31036
Component DescriptionABS006WQ
The ECM receives two vehicle speed signals via CAN communication line. One is sent from “unified meter and
A/C amp.”, and the other is from TCM (Transmission control module). The ECM uses these signals for ASCD
control. Refer to EC-36, "
AUTOMATIC SPEED CONTROL DEVICE (ASCD)" for ASCD functions.
On Board Diagnosis LogicABS006WR
This self-diagnosis has the one trip detection logic.
The MIL will not light up for this diagnosis.
NOTE:

If DTC P1574 is displayed with DTC U1000, U1001, first perform the trouble diagnosis for DTC
U1000, U1001. Refer to EC-171
.

If DTC P1574 is displayed with DTC P0500, first perform the trouble diagnosis for DTC P0500.
Refer to EC-391

If DTC P1574 is displayed with DTC P0605, first perform the trouble diagnosis for DTC P0605.
Refer to EC-402
DTC Confirmation ProcedureABS006WS
CAUTION:
Always drive vehicle at a safe speed.
NOTE:
If DTC Confirmation Procedure has been previously conducted, always turn ignition switch OFF and wait at
least 10 seconds before conducting the next test.
TESTING CONDITION:
Step 3 may be conducted with the drive wheels lifted in the shop or by driving the vehicle. If a road test
is expected to be easier, it is unnecessary to lift the vehicle.
WITH CONSULT-II
1. Start engine.
2. Select “DATA MONITOR” mode with CONSULT-II.
3. Drive the vehicle at more than 40 km/h (25 MPH).
4. If DTC is detected, go to EC-608, "
Diagnostic Procedure" .
WITH GST
Follow the procedure “WITH CONSULT-II” above.
DTC No. Trouble Diagnosis
Name DTC Detecting Condition Possible Cause
P1574
1574 ASCD vehicle speed
sensor ECM detects a difference between two vehicle
speed signals is out of the specified range.

Harness or connectors
(The CAN communication line is open or
shorted.)

Unified meter and A/C amp.

ABS actuator and electric unit (control unit)

Wheel sensor

TCM

ECM
SEF058Y

BASIC SERVICE PROCEDURE EC-775
[VK45DE]
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Revision: 2005 July 2005 FX
2. Connect ignition coil No. 1 and spark plug No. 1 with suitable
high-tension wire as shown, and attach timing light clamp to this
wire.
3. Check ignition timing.
Idle Mixture Ratio AdjustmentABS00E4E
PREPARATION
1. Make sure that the following parts are in good order.
–Battery
–Ignition system
–Engine oil and coolant levels
–Fuses
–ECM harness connector
–Va c u u m h o s e s
–Air intake system
(Oil filler cap, oil level gauge, etc.)
–Fuel pressure
–Engine compression
–Throttle valve
–Evaporative emission system
2. On air conditioner equipped models, checks should be carried out while the air conditioner is OFF.
3. On automatic transmission equipped models, when checking idle rpm, ignition timing and mixture ratio, checks should be carried out while selector lever is in N position.
4. When measuring CO percentage, insert probe more than 40 cm (15.7 in) into tail pipe.
PBIB1486E
SEF166Y
PBIB1487E

DTC P1574 ASCD VEHICLE SPEED SENSOR EC-1281
[VK45DE]
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Revision: 2005 July 2005 FX
DTC P1574 ASCD VEHICLE SPEED SENSORPFP:31036
Component DescriptionABS007UX
The ECM receives two vehicle speed sensor signals via CAN communication line. One is sent from “unified
meter and A/C amp.”, and the other is from TCM (Transmission control module). The ECM uses these signals
for ASCD control. Refer to EC-727, "
AUTOMATIC SPEED CONTROL DEVICE (ASCD)" for ASCD functions.
On Board Diagnosis LogicABS007UY
This self-diagnosis has the one trip detection logic.
The MIL will not light up for this diagnosis.
NOTE:

If DTC P1574 is displayed with DTC U1000, U1001, first perform the trouble diagnosis for DTC
U1000, U1001. Refer to EC-862, "
DTC U1000, U1001 CAN COMMUNICATION LINE" .

If DTC P1574 is displayed with DTC P0500, first perform the trouble diagnosis for DTC P0500.
Refer to EC-1123, "
DTC P0500 VSS"

If DTC P1574 is displayed with DTC P0605, first perform the trouble diagnosis for DTC P0605.
Refer to EC-1134, "
DTC P0605 ECM"
DTC Confirmation ProcedureABS007UZ
CAUTION:
Always drive vehicle at a safe speed.
NOTE:
If DTC Confirmation Procedure has been previously conducted, always turn ignition switch OFF and wait at
least 10 seconds before conducting the next test.
TESTING CONDITION:
Step 3 may be conducted with the drive wheels lifted in the shop or by driving the vehicle. If a road test
is expected to be easier, it is unnecessary to lift the vehicle.
WITH CONSULT-II
1. Start engine (VDC switch OFF).
2. Select “DATA MONITOR” mode with CONSULT-II.
3. Drive the vehicle at more than 40 km/h (25 MPH).
4. If DTC is detected, go to EC-1282, "
Diagnostic Procedure" .
WITH GST
Follow the procedure “WITH CONSULT-II” above.
DTC No. Trouble diagnosis
name DTC detecting condition Possible cause
P1574
1574 ASCD vehicle speed
sensor ECM detects a difference between two vehicle
speed signals is out of the specified range.

Harness or connectors
(The CAN communication line is open or
shorted.)

Unified meter and A/C amp.

ABS actuator and electric unit (control unit)

Wheel sensor

TCM

ECM
SEF058Y

GI-1
GENERAL INFORMATION
A GENERAL INFORMATION
CONTENTS
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SECTION GI
Revision: 2005 July
2005 FX
GENERAL INFORMATION
PRECAUTIONS .......................................................... 3
Description .......................................................... ..... 3
Precautions for Supplemental Restraint System
(SRS) “AIR BAG” and “SEAT BELT PRE-TEN-
SIONER” ............................................................. ..... 3
Precautions for NVIS/IVIS (NISSAN/INFINITI
VEHICLE IMMOBILIZER SYSTEM - NATS) (If
Equipped) ............................................................ ..... 3
Precautions Necessary for Steering Wheel Rotation
After Battery Disconnect ..................................... ..... 4
OPERATION PROCEDURE ............................ ..... 4
Precautions for Procedures without Cowl Top Cover ..... 4
General Precautions ........................................... ..... 4
Precautions for Three Way Catalyst .................... ..... 6
Precautions for Fuel (Unleaded Premium Gasoline
Recommended) ................................................... ..... 6
Precautions for Fuel (Unleaded Premium Gasoline
Required) ............................................................ ..... 7
Precautions for Multiport Fuel Injection System or
Engine Control System ....................................... ..... 7
Precautions for Hoses ......................................... ..... 7
HOSE REMOVAL AND INSTALLATION .......... ..... 7
HOSE CLAMPING ........................................... ..... 8
Precautions for Engine Oils ................................. ..... 8
HEALTH PROTECTION PRECAUTIONS ........ ..... 8
ENVIRONMENTAL PROTECTION PRECAU-
TIONS .............................................................. ..... 8
Precautions for Air Conditioning .......................... ..... 8
HOW TO USE THIS MANUAL .............................. ..... 9
Description .......................................................... ..... 9
Terms .................................................................. ..... 9
Units .................................................................... ..... 9
Contents .............................................................. ..... 9
Components ........................................................ ... 10
SYMBOLS ........................................................ ... 10
How to Follow Trouble Diagnoses ....................... .... 11
DESCRIPTION ................................................. .... 11
HOW TO FOLLOW TEST GROUPS IN TROU-
BLE DIAGNOSES ............................................ .... 11
HARNESS WIRE COLOR AND CONNECTOR NUMBER INDICATION ....................................
... 12
KEY TO SYMBOLS SIGNIFYING MEASURE-
MENTS OR PROCEDURES ............................ ... 13
How to Read Wiring Diagrams ............................ ... 15
CONNECTOR SYMBOLS ................................ ... 15
SAMPLE/WIRING DIAGRAM - EXAMPL - ....... ... 16
DESCRIPTION ................................................. ... 17
Abbreviations ....................................................... ... 23
SERVICE INFORMATION FOR ELECTRICAL INCI-
DENT ...................................................................... ... 24
How to Check Terminal ........................................ ... 24
CONNECTOR AND TERMINAL PIN KIT ......... ... 24
HOW TO PROBE CONNECTORS ................... ... 24
How to Perform Efficient Diagnosis for an Electrical
Incident ................................................................ ... 27
WORK FLOW ................................................... ... 27
INCIDENT SIMULATION TESTS ..................... ... 27
CIRCUIT INSPECTION .................................... ... 30
Control Units and Electrical Parts ........................ ... 35
PRECAUTIONS ............................................... ... 35
CONSULT-II CHECKING SYSTEM ....................... ... 37
Description ........................................................... ... 37
Function and System Application ........................ ... 37
Nickel Metal Hydride Battery Replacement ......... ... 38
Checking Equipment ........................................... ... 38
CONSULT-II Start Procedure ............................... ... 38
CONSULT-II Data Link Connector (DLC) Circuit . ... 39
INSPECTION PROCEDURE ........................... ... 39
CIRCUIT DIAGRAM ......................................... ... 40
LIFTING POINT ...................................................... ... 41
Special Service Tools .......................................... ... 41
Garage Jack and Safety Stand ............................ ... 41
2-Pole Lift ............................................................ ... 42
Board-On Lift ....................................................... ... 43
TOW TRUCK TOWING .......................................... ... 44
Tow Truck Towing ................................................ ... 44
2WD MODELS ................................................. ... 44
AWD MODELS ................................................. ... 45
Vehicle Recovery (Freeing a Stuck Vehicle) ........ ... 45
AUTOMATIC TRANSMISSION ........................ ... 46