2007 INFINITI FX35 Service Manual

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INFINITI FX35 2007 Service Manual ACS-1
AUTO CRUISE CONTROL SYSTEM
K ELECTRICAL
CONTENTS
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SECTION
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ACS
Revision: 2006 July 2007 FX35/FX45
AUTO CRUISE CONTROL SYSTEM
ASCD
AUTOMATIC SPEED CONTROL DEVI

ACS-1
AUTO CRUISE CONTROL SYSTEM
K ELECTRICAL
CONTENTS
C
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SECTION
A
B
ACS
Revision: 2006 July 2007 FX35/FX45
AUTO CRUISE CONTROL SYSTEM
ASCD
AUTOMATIC SPEED CONTROL DEVICE (ASCD) ..... 3
Description .......................................................... ..... 3
ICC
PRECAUTIONS ..................................................... ..... 4
Precautions for Supplemental Restraint System
(SRS) “AIR BAG” and “SEAT BELT PRE-TEN-
SIONER” ............................................................. ..... 4
Precautions for ICC System Service ................... ..... 4
PREPARATION ...................................................... ..... 5
Special Service Tools .......................................... ..... 5
DESCRIPTION ....................................................... ..... 6
Outline ................................................................. ..... 6
VEHICLE-TO-VEHICLE DISTANCE CONTROL
MODE .............................................................. ..... 6
CONVENTIONAL (FIXED SPEED) CRUISE
CONTROL MODE ............................................ ..... 6
BRAKE ASSIST (WITH PREVIEW FUNCTION) ..... 6
Functional Diagram ............................................. ..... 7
Components Description ..................................... ..... 9
CAN Communication ........................................... ..... 9
CAN COMMUNICATION UNIT ........................ ..... 9
Switch Operation ................................................. ... 10
ICC System Display ............................................ ... 10
ACTION TEST ....................................................... ....11
ICC System Running Test ................................... .... 11
VEHICLE-TO-VEHICLE DISTANCE CONTROL
MODE .............................................................. .... 11
CONVENTIONAL (FIXED SPEED) CRUISE
CONTROL MODE ............................................ ... 12
LASER BEAM AIMING ADJUSTMENT ................ ... 14
Outline ................................................................. ... 14
Preparation .......................................................... ... 14
Outline of Adjustment Procedure ........................ ... 14
Setting the ICC Target Board .............................. ... 14
ADJUSTING HEIGHT OF THE TARGET ......... ... 14
ADJUSTING THE RIGHT-LEFT POSITION OF
THE TARGET ................................................... ... 15 SETTING THE TARGET ..................................
... 15
Aiming Adjustment ............................................... ... 17
CHECK AFTER THE ADJUSTMENT ............... ... 18
ELECTRICAL UNITS LOCATION ......................... ... 19
Component Parts and Harness Connector Location ... 19
WIRING DIAGRAM ................................................ ... 20
Schematic ............................................................ ... 20
Wiring Diagram — ICC — ................................... ... 21
TERMINALS AND REFERENCE VALUE .............. ... 28
Terminals and Reference Value for ICC Unit ....... ... 28
Terminals and Reference Value for ICC Sensor .. ... 29
TROUBLE DIAGNOSIS — GENERAL DESCRIP-
TION ....................................................................... ... 30
Work Flow ............................................................ ... 30
CONSULT-II Function (ICC) ................................ ... 31
DESCRIPTION ................................................. ... 31
CONSULT-II BASIC OPERATION .................... ... 31
WORK SUPPORT ............................................ ... 32
SELF-DIAGNOSTIC RESULTS ........................ ... 32
DATA MONITOR .............................................. ... 33
ACTIVE TEST .................................................. ... 35
Self-Diagnostic Function ...................................... ... 37
WITH CONSULT-II ........................................... ... 37
WITHOUT CONSULT-II .................................... ... 37
SELF-DIAGNOSIS BY ICC SYSTEM DISPLAY
WILL NOT RUN ................................................ ... 39
TROUBLE DIAGNOSIS FOR SELF-DIAGNOSTIC
ITEMS ..................................................................... ... 42
Diagnostic Trouble Code (DTC) Chart ................ ... 42
DTC 11 CONTROL UNIT .................................... ... 44
DTC 20 CAN COMM CIRCUIT ............................ ... 44
DTC 31 POWER SUPPLY CIR, DTC 34 POWER
SUPPLY CIR 2 .................................................... ... 44
DTC 41 VHCL SPEED SE CIRC ......................... ... 45
DTC 43 ABS/TCS/VDC CIRC ............................. ... 46
DTC 45 BRAKE SW/STOP L SW ........................ ... 46
DTC 46 OPERATION SW CIRC .......................... ... 48
DTC 61 PRESS SEN CIRCUIT ........................... ... 50
DTC 62 BOOSTER SOL/V CIRCUIT .................. ... 51
DTC 63 RELEASE SW CIRCUIT ........................ ... 52

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INFINITI FX35 2007 Service Manual ACS-2Revision: 2006 July 2007 FX35/FX45
DTC 65 PRESSURE CONTROL .........................
... 54
DTC 74 LASER BEAM OFF CNTR ..................... ... 55
DTC 90 STOP LAMP RLY FIX ..............

ACS-2Revision: 2006 July 2007 FX35/FX45
DTC 65 PRESSURE CONTROL .........................
... 54
DTC 74 LASER BEAM OFF CNTR ..................... ... 55
DTC 90 STOP LAMP RLY FIX ............................ ... 55
DTC 92 ECM CIRCUIT ........................................ ... 61
DTC 96 NP RANGE ............................................ ... 62
DTC 97 AT CIRCUIT ........................................... ... 64
DTC 98 GEAR POSITION ................................... ... 64
DTC 102 RADAR STAIN ..................................... ... 65
DTC 103 LASER SENSOR FAIL ......................... ... 65
DTC 104 LASER AIMING INCMP ....................... ... 66
DTC 107 LASER COMM FAIL ............................. ... 66
DTC 109 LASER HIGH TEMP ............................ ... 66
TROUBLE DIAGNOSIS FOR SYMPTOMS ........... ... 67
Symptom Chart .................................................... ... 67
Symptom 1: MAIN Switch Does Not Turn ON*
1 ,
MAIN Switch Does Not Turn OFF*
2 ..................... ... 68
Symptom 2: ICC System Cannot Be Set (MAIN
Switch Turns ON/OFF) ........................................ ... 68
Symptom 3: ICC System Cannot Be Operated by
CANCEL Switch, RESUME/ACCELERATE Switch
or DISTANCE Switch ........................................... ... 69
Symptom 4: ICC System Is Not Cancelled When the A/T Selector Lever Is in Other Than “D” and “M”
Position ................................................................ ... 70
Symptom 5: Chime Does Not Sound ................... ... 70
Symptom 6: Driving Force Is Hunting .................. ... 71
Symptom 7: ICC System Frequently Cannot Detect
the Vehicle Ahead/ Detection Zone Is Short ........ ... 71
Symptom 8: The System Does Not Detect the Vehi-
cle Ahead at All .................................................... ... 72
ELECTRICAL COMPONENT INSPECTION .......... ... 73
ICC Steering Switch ............................................. ... 73
Booster Solenoid .................................................. ... 73
Release Switch .................................................... ... 73
ICC Brake Switch and Stop Lamp Switch ............ ... 74
ICC Brake Hold Relay .......................................... ... 74
REMOVAL AND INSTALLATION ........................... ... 75
ICC Unit ............................................................... ... 75
REMOVAL ......................................................... ... 75
INSTALLATION ................................................. ... 75
ICC Sensor .......................................................... ... 75
REMOVAL ......................................................... ... 75
INSTALLATION ................................................. ... 76
ICC Steering Switch ............................................. ... 76

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INFINITI FX35 2007 Service Manual AUTOMATIC SPEED CONTROL DEVICE (ASCD) ACS-3
[ASCD]
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ACS
Revision: 2006 July 2007 FX35/FX45
[ASCD]AUTOMATIC SPEED CONTROL DEVICE (ASCD)PFP:18930
DescriptionNKS003EF

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INFINITI FX35 2007 Service Manual ACS-4
[ICC]
PRECAUTIONS
Revision: 2006 July 2007 FX35/FX45
[ICC]PRECAUTIONSPFP:00001
Precautions for Supplemental Restraint System (SRS) “AIR BAG” and “SEAT
BELT PRE-TENSIONER”
NKS003EG
The

ACS-4
[ICC]
PRECAUTIONS
Revision: 2006 July 2007 FX35/FX45
[ICC]PRECAUTIONSPFP:00001
Precautions for Supplemental Restraint System (SRS) “AIR BAG” and “SEAT
BELT PRE-TENSIONER”
NKS003EG
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 and SB section of this Service Man-
ual.
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 per-
formed by an authorized NISSAN/INFINITI dealer.
Improper maintenance, including incorrect removal and installation of the SRS, can lead to per-
sonal injury caused by unintentional activation of the system. For removal of Spiral Cable and Air
Bag Module, see the SRS section.
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
harness connectors.
Precautions for ICC System ServiceNKS003EH
Never look straight into the laser beam discharger when adjusting laser beam aiming.
Turn the MAIN switch OFF in conditions similar to driving, such as free rollers or a chassis dynamometer.
Do not use the ICC sensor removing from vehicle, disassemble, or remodel the sensor.
Erase DTC when replacing parts of ICC system, then check the operation of ICC system after adjusting
laser beam aiming if necessary.

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INFINITI FX35 2007 Service Manual PREPARATION ACS-5
[ICC]
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ACS
Revision: 2006 July 2007 FX35/FX45
PREPARATIONPFP:00002
Special Service ToolsNKS003EI
The actual shapes of Kent-Moore tools may differ

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INFINITI FX35 2007 Service Manual ACS-6
[ICC]
DESCRIPTION
Revision: 2006 July 2007 FX35/FX45
DESCRIPTIONPFP:00000
OutlineNKS003EJ
The Intelligent Cruise Control (ICC) system automatically maintains a selected distance from the vehicle

ACS-6
[ICC]
DESCRIPTION
Revision: 2006 July 2007 FX35/FX45
DESCRIPTIONPFP:00000
OutlineNKS003EJ
The Intelligent Cruise Control (ICC) system automatically maintains a selected distance from the vehicle
ahead according to that vehicle's speed, or at the set speed, if the road ahead is clear.
The ICC function has two cruise control modes and brake assist (with preview function).
VEHICLE-TO-VEHICLE DISTANCE CONTROL MODE
With vehicle-to-vehicle distance control mode, the driver can maintain the same speed as other vehicles with-
out the constant need to adjust the set speed as the driver would with a normal cruise control system.
The system is intended to enhance the operation of the vehicle when following the vehicle traveling in the
same lane and direction.
If the distance sensor detects a slower moving vehicle ahead, the system will reduce speed so that the vehicle
ahead can be followed at the selected distance.
The system automatically controls the throttle and applies the brakes (up to 25% of vehicle braking power) if
necessary.
The detection range of the sensor is approximately 120 m (390 ft) ahead.
Refer to Owner's Manual for Intelligent Cruise Control System operating instructions.
CONVENTIONAL (FIXED SPEED) CRUISE CONTROL MODE
Conventional (fixed speed) cruise control mode is cruising at preset speeds.
Refer to Owner's Manual for Intelligent Cruise Control System operating instructions.
BRAKE ASSIST (WITH PREVIEW FUNCTION)
When the force applied to brake pedal exceeds a certain level, the Brake Assist is activated and generates a
greater braking force than that of a conventional brake booster even with light pedal force.
When the Preview Function identifies the need to apply the sudden brake by sensing the vehicle ahead in the
same lane and the distance and relative speed from it, it applies the brake pre-pressure before driver depress
the brake pedal and improves brake response by reducing its free play.
Refer to Owner's Manual for BRAKE ASSIST (WITH PREVIEW FUNCTION) operating instructions.

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INFINITI FX35 2007 Service Manual DESCRIPTION ACS-7
[ICC]
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ACS
Revision: 2006 July 2007 FX35/FX45
Functional DiagramNKS003ID
Items of input/output signal to be checked with CONSULT-II
PKIC8700E
Inpu

DESCRIPTION ACS-7
[ICC]
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ACS
Revision: 2006 July 2007 FX35/FX45
Functional DiagramNKS003ID
Items of input/output signal to be checked with CONSULT-II
PKIC8700E
Input Data monitored
Item [unit] CAN Description
ECM THRTL OPENING
[%] ×Indicates throttle angle read by ICC unit through CAN communication (ECM transmits
throttle angle through CAN communication).
ENGINE RPM
[rpm] ×
Indicates engine speed read by ICC unit through CAN communication (ECM transmits
engine speed through CAN communication).
MAIN SW
[ON/OFF] × Indicates [ON/OFF] status as judged from steering switch signal (ECM transmits steer-
ing switch signal through CAN communication).
SET/COAST SW
[ON/OFF] ×Indicates [ON/OFF] status as judged from steering switch signal (ECM transmits steer-
ing switch signal through CAN communication).
CANCEL SW
[ON/OFF] ×
Indicates [ON/OFF] status as judged from steering switch signal (ECM transmits steer-
ing switch signal through CAN communication).
RESUME/ACC SW
[ON/OFF] × Indicates [ON/OFF] status as judged from steering switch signal (ECM transmits steer-
ing switch signal through CAN communication).
IDLE SW
[ON/OFF] ×Indicates [ON/OFF] status of idle switch read by ICC unit through CAN communication
(ECM transmits ON/OFF status through CAN communication).
TCM VHCL SPD AT
[km/h] or [mph] × Indicates vehicle speed calculated from AT vehicle speed sensor by ICC unit through
CAN communication (TCM transmits AT vehicle speed sensor signal through CAN com-
munication).
GEAR
[1, 2, 3, 4, 5] ×
Indicates AT gear position read by ICC unit through CAN communication (TCM trans-
mits gear position through CAN communication).
D RANGE SW
[ON/OFF] × Indicates [ON/OFF] status of “D” position read by ICC unit through CAN communication
(TCM transmits ON/OFF condition of “D” position through CAN communication).
NP RANGE SW
[ON/OFF] ×Indicates PNP switch signal read by ICC unit through CAN communication (TCM trans-
mits PNP switch signal through CAN communication).

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INFINITI FX35 2007 Service Manual ACS-8
[ICC]
DESCRIPTION
Revision: 2006 July 2007 FX35/FX45
ABS actuator
and electric
unit (control
unit) VHCL SPEED SE
[km/h] or [mph] × Indicates vehicle speed calculated from wheel sensor b

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