steering INFINITI FX35 2008 User Guide

ACS-40
< SERVICE INFORMATION >[ICC]
TROUBLE DIAGNOSIS FOR
SELF-DIAGNOSTIC ITEMS
Check continuity between ICC unit harness connector and stop lamp
switch harness connector.
OK or NG
OK >> 1. Replace ICC unit.
2. Erase DTC and perform ICC system running test.Then perform self-diagnosis of ICC system again.
NG >> 1. Repair harness between ICC unit and stop lamp switch.
2. Erase DTC and perform ICC system running test. Then perform self-diagnosis of ICC system
again.
DTC 46 OPERATION SW CIRCINFOID:0000000001328832
1.CHECK CONNECTOR FOR ECM
1. Turn ignition switch OFF.
2. Disconnect ECM connector, and connect it securely again.
3. Erase DTC and perform ICC system running test. T hen perform self-diagnosis of ICC system again.
Is malfunction indicated?
YES >> GO TO 2.
NO >> Poor connector connection 1. Check connector. (Check connector housing for disconnected, loose, bent, and collapsed ter-minals. If any malfunction is detected, repair applicable part.)
2. Erase DTC and perform ICC system running test. Then perform self-diagnosis of ICC system
again.
2.CHECK ICC STEERING SWITCH
Check ICC steering switch. Refer to ACS-63, "
ICC Steering Switch".
OK or NG
OK >> GO TO 3.
NG >> 1. Replace ICC steering switch. 2. Erase DTC and perform ICC system running test. Then perform self-diagnosis of ICC system
again.
3.CHECK ICC STEERING SWITCH SIGNAL CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect ECM connector and spiral cable connector.
3. Check continuity between spiral cable harness connector and ECM harness connector.
ICC unit connector Terminal St op la mp sw i tc h
connector Terminal Continuity
M89 38 E210 2 Yes
PKIB4163E
Spiral cable connector Terminal ECM connector Terminal Continuity
M15 33
M90 82
Ye s
34 99
PKIB4164E
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ACS-60
< SERVICE INFORMATION >[ICC]
TROUBLE DIAGNOSIS FOR SYMPTOMS
Possible Irregular Condition
1.CHECK FUSES
Check that any of the fuses is blown.
OK or NG
OK >> GO TO 2.
NG >> If fuse is blown, be sure to eliminate cause of malfunction before installing new fuse.
2.CHECK ICC SYSTEM DISPLAY
1. Turn ignition switch ON.
2. Check if all displays illuminate.
Do all displays illuminate?
YES >> GO TO 3.
NO >> GO TO 6.
3.CHECK HARNESS BETWEEN ECM AND ICC STEERING SWITCH
1. Turn ignition switch OFF.
2. Disconnect ECM connector, and check terminals for bend and looseness.
3. Check continuity between ECM harness connector terminals.
Open or short lines Symptoms Malfunction causes
ICC unit power supply malfunction No voltage supply from ignition switch Fuse blown Harness open
Harness shorted
Ground cable not connected Harness open Harness shorted
ICC steering switch malfunction No signal transmitted Harness open Harness shorted
Spiral cable open
Spiral cable shorted
Switch or ECM malfunction
CAN communication system malfunction Signal not transmitted Harness open Harness shorted
CAN communication outside the standard.
Combination meter system malfunction Indication not possible Indicator display malfunction ICC system display segments disappear.
ICC unit malfunction ICC unit internal malfunction.
Unit Power source Fuse No.
ICC unit Ignition switch (ON) 12
Battery 35
ECM connector Terminal Condition Resistance
(Approx.)
M90 82 99 When MAIN switch pressed 0
Ω
When MAIN switch released 5.5 k Ω
PKIB4145E
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TROUBLE DIAGNOSIS FOR SYMPTOMSACS-61
< SERVICE INFORMATION > [ICC]
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4. Check continuity between ECM harness connector and ground.
OK or NG
OK >> GO TO 5.
NG >> GO TO 4.
4.CHECK ICC STEERING SWITCH
Check ICC steering switch. Refer to ACS-63, "
ICC Steering Switch".
OK or NG
OK >> 1. Repair or replace harness between ECM and ICC steering switch. 2. Perform self-diagnosis mode for ICC system.
NG >> 1. Replace ICC steering switch. 2. Perform self-diagnosis mode for ICC system.
5.CHECK SELF-DIAGNOSIS
1. Connect ECM connector.
2. Turn ignition switch ON.
3. Perform self-diagnosis mode for ICC system.
OK or NG
OK >> INSPECTION END
NG >> GO TO 6.
6.CHECK CONNECTOR FOR ICC UNIT
1. Turn ignition switch OFF.
2. Disconnect ICC unit connector, and c heck terminals for bend and looseness.
3. Connect ICC unit connector.
4. Turn ignition switch ON.
5. Check if all displays illuminate.
Do all displays illuminate?
YES >> Perform self-diagnosis again.
NO >> GO TO 7.
7.CHECK POWER SUPPLY CIRCUIT FOR ICC UNIT
Check voltage between ICC unit harness connector terminals.
OK or NG
OK >> GO TO 8.
NG >> Repair ICC unit power supply harness.
8.CHECK GROUND CIRCUIT FOR ICC UNIT
ECM connector Terminal
GroundContinuity
M90 82
No
99
PKIB4146E
ICC unit connector Te r m i n a l
Voltage (Approx.)
(+) ( −)
M89 33
Ground Battery voltage
42
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ELECTRICAL COMPONENT INSPECTIONACS-63
< SERVICE INFORMATION > [ICC]
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ELECTRICAL COMPONENT INSPECTION
ICC Steering SwitchINFOID:0000000001328857
1. Disconnect ICC steering switch.
2. Check resistance between ICC steering switch connector termi- nals by pressing each switch.
Booster SolenoidINFOID:0000000001328858
Disconnect booster solenoid/release switch connector, and measure
resistance between terminals 4 and 6.
Release SwitchINFOID:0000000001328859
Disconnect booster solenoid/release switch connector and check
resistance between the terminals.
NOTE:
If pedal is depressed insufficiently, resistance value may remain unchanged. Terminals Switch Condition Resistance [k
Ω]
14 15 MAIN
Pressed Approx. 0
Released Approx. 5.5
CANCEL Pressed Approx. 0.3
Released Approx. 5.5
DISTANCE Pressed Approx. 0.7
Released Approx. 5.5
SET/COAST Pressed Approx. 1.4
Released Approx. 5.5
RESUME/ACCELERATE Pressed Approx. 2.6
Released Approx. 5.5
PKIB4169E
Terminals Resistance [
Ω]
4 6 Approx. 1.4
PKIC5181E
Condition 1 - 3 1 - 2 2 - 3
Release
the brake pedal. Continuity should
exist. Continuity should
not exist. Continuity should
not exist.
Depress
the brake pedal. Continuity should
not exist. (Note) Continuity should
exist. (Note) Continuity should
not exist.
SKIA1256E
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ACS-66
< SERVICE INFORMATION >[ICC]
REMOVAL AND INSTALLATION
CAUTION:
Adjust the laser beam aiming every time
the ICC sensor is removed or installed.
ICC Steering SwitchINFOID:0000000001328864
Refer to PS-12, "Removal and Installation".
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ATC-1
AIR CONDITIONER
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CONTENTS
AUTOMATIC AIR CONDITIONER
SERVICE INFORMATION .. ..........................3
PRECAUTIONS .............................................. .....3
Precaution for Supplemental Restraint System
(SRS) "AIR BAG" and "SEAT BELT PRE-TEN-
SIONER" ............................................................. ......
3
Precaution Necessary for Steering Wheel Rota-
tion After Battery Disconnect .....................................
3
Precaution for Procedure without Cowl Top Cover ......4
Precaution for Working with HFC-134a (R-134a) ......4
General Refrigerant Precaution ................................4
Precaution for Refrigerant Connection ......................5
Precaution for Service of Compressor ......................9
Precaution for Service Equipment .............................9
Precaution for Leak Detection Dye .........................11
PREPARATION ..................................................13
Special Service Tool ........................................... ....13
HFC-134a (R-134a) Service Tool and Equipment ....13
Commercial Service Tool ........................................16
REFRIGERATION SYSTEM ..............................17
Refrigerant Cycle ................................................ ....17
Refrigerant System Protection ................................17
V-6 Variable Displacement Compressor .................17
Component Part Location .......................................21
LUBRICANT ................................................... ....22
Maintenance of Lubricant Quantity in Compressor ....22
AIR CONDITIONER CONTROL .........................24
Description of Air Conditioner LAN Control Sys-
tem ...................................................................... ....
24
System Construction ...............................................24
Description of Control System .................................27
Control Operation ....................................................27
Fail-Safe Function ...................................................28
Discharge Air Flow ..................................................29
System Description .................................................30
CAN Communication System Description ...............30
TROUBLE DIAGNOSIS .....................................32
CONSULT-III Function ........................................ ....32
How to Perform Trouble Diagnosis for Quick and
Accurate Repair .......................................................
32
Component Parts and Harness Connector Loca-
tion ...........................................................................
34
Schematic ................................................................36
Wiring Diagram - A/C - ............................................37
Auto Amp. Terminal and Reference Value ..............42
Self-Diagnosis Function ...........................................43
Operational Check ...................................................50
Power Supply and Ground Circuit for Auto Amp .....52
LAN System Circuit .................................................54
Mode Door Motor Circuit .........................................57
Air Mix Door Motor Circuit .......................................59
Air Mix Door Motor PBR Circuit ...............................62
Intake Door Motor Circuit .........................................62
Blower Motor Circuit ................................................64
Magnet Clutch Circuit ..............................................69
Insufficient Cooling ..................................................75
Insufficient Heating ..................................................82
Noise .......................................................................83
Self-Diagnosis .........................................................84
Memory Function .....................................................85
Ambient Sensor Circuit ............................................86
In-vehicle Sensor Circuit ..........................................88
Sunload Sensor Circuit ............................................91
Intake Sensor Circuit ...............................................94
CONTROLLER ..................................................97
Removal and Installation of A/C and AV Switch ......97
AUTO AMP ........................................................98
Removal and Installation of Unified Meter and A/C
Amp .........................................................................
98
AMBIENT SENSOR ..........................................99
Removal and Installation .........................................99
IN-VEHICLE SENSOR ....................................100
Removal and Installation .......................................100
SUNLOAD SENSOR .......................................101
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PRECAUTIONSATC-3
< SERVICE INFORMATION >
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SERVICE INFORMATION
PRECAUTIONS
Precaution for Supplemental Restraint System (SRS) "AIR BAG" and "SEAT BELT
PRE-TENSIONER"
INFOID:0000000001612929
The Supplemental Restraint System such as “A IR BAG” and “SEAT BELT PRE-TENSIONER”, used along
with a front seat belt, helps to reduce the risk or severi ty 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 inoper ative, 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 in correct removal and installation of the SRS, can lead to personal
injury caused by unintentional act ivation of the system. For removal of Spiral Cable and Air Bag
Module, see the “SUPPLEMEN TAL RESTRAINT SYSTEM”.
 Do not use electrical test equipm ent on any circuit related to the SRS unless instructed to in this
Service Manual. SRS wiring harnesses can be identi fied by yellow and/or orange harnesses or har-
ness connectors.
Precaution Necessary for Steering Wh eel Rotation After Battery Disconnect
INFOID:0000000001612931
NOTE:
 This Procedure is applied only to models with Intell igent Key system and NVIS/IVIS (NISSAN/INFINITI
VEHICLE IMMOBILIZER SYSTEM - NATS).
 Remove and install all control units after disconnecti ng 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 pow er 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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HEATER & COOLING UNIT ASSEMBLYATC-109
< SERVICE INFORMATION >
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11. Remove mounting nuts and bolts, and then remove instrument stays (left and right side).
12. Remove mounting bolts from heater & cooling unit assembly.
13. Disconnect drain hose.
14. Remove center and side ventilator ducts, defroster nozzle and side defroster ducts. Refer to ATC-116,
"Removal and Installation".
15. Remove steering column mounting bolts and nut.
16. Remove steering member mounting bolts, nut and harness clips.
17. Remove steering member, and then remove heater & cooling unit assembly.
INSTALLATION
Installation is basically the reverse order of removal.
CAUTION:
 Replace O-rings of low-pressure pipe 1 and high- pressure pipe 2 with new ones, and then apply
compressor oil to it when installing it.
 Female-side piping c onnection is thin and easy to deform. Slowly insert the male-side piping
straight in axial direction.
 Insert piping securely until a click is heard.
 After piping connection is comple ted, pull male-side piping by hand to make sure that connection
does not come loose.
 When recharging refrigerant, check for leaks.
RJIA2042E
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ATC-110
< SERVICE INFORMATION >
HEATER & COOLING UNIT ASSEMBLY
NOTE:
 When filling radiator with coolant, refer to CO-10, "
Changing Engine Coolant" (VQ35DE) or CO-37, "Chang-
ing Engine Coolant" (VK45DE).
 Recharge the refrigerant.
Heater & cooling unit assembly mounting bolt: 6.8 N·m (0.69 kg-m, 60 in-lb)
Steering member mounting nut and bolt : 12 N·m (1.2 kg-m, 9 fl-lb)
Steering column mounting nut and bolt : 16.7 N·m (1.7 kg-m, 12 fl-lb)
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REFRIGERANT LINESATC-135
< SERVICE INFORMATION >
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Be sure to clean carefully.
4. Remove liquid tank and power steering oil cooler mounting bolts.
5. Lift liquid tank bracket upward. Remove liquid tank bracket from protruding part of condenser.
6. Slide liquid tank upward, and then remove liquid tank.
INSTALLATION
Install liquid tank, and then install liquid tank bracket on condenser.
CAUTION:
 Make sure liquid tank bracket is securely installed at protru- sion of condenser. (Make sure liquid tank bracket does not
move to a position below center of liquid tank.)
 Replace O-rings of condenser pipe with new ones, and then
apply compressor oil to it when installing it.
 When recharging refrigerant, check for leaks.
Removal and Installation of CondenserINFOID:0000000001328227
REMOVAL
1. Use a refrigerant collecting equipment (f or HFC-134a) to discharge the refrigerant.
2. Remove cooling fan. Refer to CO-48
(VK45DE).
3. Remove radiator cooling fan assembly. Refer to CO-13
(VQ35DE).
4. Remove radiator shroud. Refer to CO-40
(VK45DE).
SJIA1644E
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