INFINITI FX35 2005 User Guide

ACS-2Revision: 2005 July 2005 FX
DTC 65 PRESSURE CONTROL .........................
... 52
DTC 74 LASER BEAM OFF CNTR ..................... ... 53
DTC 90 STOP LAMP RLY FIX ............................ ... 53
DTC 92 ECM CIRCUIT ........................................ ... 59
DTC 96 NP RANGE ............................................ ... 60
DTC 97 AT CIRCUIT ........................................... ... 61
DTC 98 GEAR POSITION ................................... ... 61
DTC 102 RADAR STAIN ..................................... ... 62
DTC 103 LASER SENSOR FAIL ......................... ... 63
DTC 104 LASER AIMING INCMP ....................... ... 63
DTC 107 LASER COMM FAIL ............................. ... 63
DTC 109 LASER HIGH TEMP ............................ ... 64
TROUBLE DIAGNOSIS FOR SYMPTOMS ........... ... 65
Symptom Chart .................................................... ... 65
Symptom 1: MAIN Switch Does Not Turn ON*
1 ,
MAIN Switch Does Not Turn OFF*
2 ..................... ... 66
Symptom 2: ICC System Cannot Be Set (MAIN
Switch Turns ON/OFF) ........................................ ... 66
Symptom 3: ICC System Cannot Be Operated by
CANCEL Switch, RESUME/ACCELERATE Switch
or DISTANCE Switch ........................................... ... 67 Symptom 4: ICC System Is Not Cancelled When
the Gear Is in Other Than “D” .............................. ... 68
Symptom 5: Chime Does Not Sound ................... ... 68
Symptom 6: Driving Force Is Hunting .................. ... 69
Symptom 7: ICC System Frequently Cannot Detect
the Vehicle Ahead/ Detection Zone Is Short ........ ... 69
Symptom 8: The System Does Not Detect the Vehi-
cle Ahead at All .................................................... ... 70
ELECTRICAL COMPONENT INSPECTION .......... ... 71
ICC Steering Switch ............................................. ... 71
ICC Brake Switch and Stop Lamp Switch ............ ... 71
Boost Solenoid ..................................................... ... 71
Release Switch .................................................... ... 72
REMOVAL AND INSTALLATION ........................... ... 73
ICC Unit ............................................................... ... 73
REMOVAL ......................................................... ... 73
INSTALLATION ................................................. ... 73
ICC Sensor .......................................................... ... 73
REMOVAL ......................................................... ... 73
INSTALLATION ................................................. ... 74
ICC Steering Switch ............................................. ... 74

AUTOMATIC SPEED CONTROL DEVICE (ASCD) ACS-3
[ASCD]
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[ASCD]AUTOMATIC SPEED CONTROL DEVICE (ASCD)PFP:18930
DescriptionAKS007XN
Regarding the information for ASCD system, refer to EC-36, "AUTOMATIC SPEED CONTROL DEVICE
(ASCD)" (VQ35DE), EC-727, "AUTOMATIC SPEED CONTROL DEVICE (ASCD)" (VK45DE).

ACS-4
[ICC]
PRECAUTIONS
Revision: 2005 July 2005 FX
[ICC]PRECAUTIONSPFP:00001
Precautions for Supplemental Restraint System (SRS) “AIR BAG” and “SEAT
BELT PRE-TENSIONER”
AKS00FCX
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 ServiceAKS00C88

Do not look straight into the laser beam discharger when adjusting laser beam aiming.

Turn the MAIN switch OFF in conditions similar to driving, such like Free rollers or a chassis dynamome-
ter.

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.

PREPARATION ACS-5
[ICC]
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PREPARATIONPFP:00002
Special Service ToolsAKS00C8A
The actual shapes of Kent-Moore tools may differ from those of special service tools illustrated here.
Tool number
(Kent - Moore No.)
Tool name Description
KV99110100
(J-45718)
ICC target board Laser beam aiming adjustment
PKIA0358J

ACS-6
[ICC]
DESCRIPTION
Revision: 2005 July 2005 FX
DESCRIPTIONPFP:00000
OutlineAKS00C8B
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
Vehicle-to-vehicle distance control mode, the driver can maintain the same speed as other vehicles without
the constant need to adjust the set speed as you 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 390 ft (120 m) 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.
System DiagramAKS00C8C
PKIB4142E

DESCRIPTION ACS-7
[ICC]
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Components DescriptionAKS00C8D
CAN CommunicationAKS00C8E
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-
tric 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 UNIT
Refer to LAN-30, "CAN Communication Unit" .
Component Vehicle-to-
vehicle
distance
control mode Conventional
(fixed speed) cruise
control mode Brake assist
(with pre-
view func- tion) Description
ICC unit ××× Operates electric throttle control actuator and brake
booster based on that sensor signals and CAN commu-
nication data, then controls vehicle distance.
ICC sensor ×× Irradiates laser beam, and receives reflected laser
beam to measure distance from preceding vehicle.
ECM ××× Transmits throttle position signal and ICC steering
switch signal to ICC unit through CAN communication.
ABS actuator and electric
unit (control unit) ×××
Transmits wheel speed sensor signal to ICC unit
through CAN communication.
Brake pressure sensor ×× Detects fluid pressure in master cylinder.
Brake booster ×× Adjusts brake fluid pressure, based on command from
ICC unit.
BCM × Transmit front wiper request signal to ICC unit through
CAN communication.
TCM ×× Transmits gear position signal and output shaft revolu-
tion signal to ICC unit through CAN communication.
Unified meter and A/C amp. ××× Receives ICC system display signal, ICC warning lamp
signal and buzzer output signal from ICC unit through
CAN communication.
ICC brake switch, stop
lamp switch ××× Transmit operating signal to ICC unit when touching
brake pedal. ICC unit cancels cruise system at driver's
brake operation.
Parking brake switch ×× The cruise system is cancelled when applied.

ACS-8
[ICC]
DESCRIPTION
Revision: 2005 July 2005 FX
Switch OperationAKS00C8F
The system is operated by MAIN switch and four control switches, all mounted on the steering wheel.
ICC System DisplayAKS00C8G
No. Switch name Description
1 RESUME/ACCELERATE switch Resumes set speed or increases speed incrementally.
2 SET/COAST switch Sets desired cruise speed, reduces speed incrementally.
3 MAIN switch Master switch to activate the system
4 CANCEL switch Deactivates system without erasing set speed.
5 DISTANCE switch Changes the following distance from: Long, Middle, Short.
SKIA5973E
SKIA6177E
No. Display items Description 1 Set vehicle speed indicator Indicates the set vehicle speed.
2 Vehicle ahead detection indicator Indicates whether it detects a vehicle ahead.
3 Set distance indicator Display the selected distance between vehicles set with the DISTANCE switch.
4 Own vehicle indicator Indicates the base vehicle.
5 MAIN switch indicator lamp (Green) Indicates that the MAIN switch is ON.
6 Intelligent cruise control system warning
lamp (Orange) The light comes on if there is a malfunction in the ICC system.
7 SET switch indicator lamp Indicates that the conventional cruise control mode is controlled.

ACTION TEST ACS-9
[ICC]
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ACTION TESTPFP:00000
ICC System Running TestAKS00C8H
VEHICLE-TO-VEHICLE DISTANCE CONTROL MODE
Set Checking
1. Press the MAIN switch for less than 1.5 seconds.
2. Drive the vehicle between 25 MPH (40 km/h for CANADA models) and 90 MPH (144 km/h for CANADA models).
3. Push the SET/COAST switch.
4. Confirm that the desired speed is set as hand is released from the SET/COAST switch.
NOTE:

When there is no vehicle ahead, drive at the set speed steadily.

When there is a vehicle ahead, control to maintain distance from the vehicle ahead, watching its speed.

The set vehicle speed is displayed on the ICC system indicator in the combination meter.
Check For Increase Of Cruising Speed
1. Set vehicle-to-vehicle distance control mode at desired speed.
2. Check if the set speed increases by 1 MPH (1 km/h for CANADA models) as RESUME/ACCELERATE switch is pushed.
NOTE:
The maximum set speed of the vehicle-to-vehicle distance control mode is 90 MPH (144 km/h for CANADA
models).
Check For Decrease Of Cruising Speed
1. Set vehicle-to-vehicle distance control mode at desired speed.
2. Check if the set speed decreases by 1 MPH (1 km/h for CANADA models) as SET/COAST switch is pushed.
NOTE:

Vehicle-to-vehicle distance control mode is automatically turned off when the driving speed lowers to 20
MPH (32 km/h for CANADA models) due to the deceleration of the vehicle ahead.

The minimum set speed of the vehicle-to-vehicle distance control mode is 25 MPH (40 km/h for CANADA
models).
Check For Cancellation Of Vehicle-To-Vehicle Distance Control Mode (Normal Driving Condi-
tion) In The Following Cases:
1. When the brake pedal is depressed after the system is turned ON.
2. When the selector lever is shifted into other than “D” including manual shift.
3. When the MAIN switch is turned OFF.
4. When CANCEL switch is operated.
Check For Restoring Speed That Is Set By Vehicle-To-Vehicle Distance Control Mode Before
Cancellation
1. Cancel the system by depressing the foot brake. Then, check that the speed before cancellation is
restored when pressing RESUME/ACCELERATE switch with 25 MPH (40 km/h for CANADA models) or
above.
2. Cancel the system by shifting the selector lever into other than “D”. Then, check if the speed set before the cancellation is restored when RESUME/ACCELERATE switch is pressed.
3. Check if the speed previously set is restored when RESUME/ACCELERATE switch is operated with driv- ing 25 MPH (40 km/h for CANADA models), after canceling vehicle-to-vehicle distance control mode by
operating the CANCEL switch.

ACS-10
[ICC]
ACTION TEST
Revision: 2005 July 2005 FX
Check For MAIN Switch
1. Start the engine. Then, check the following operations are car-
ried correctly.
2. Vehicle-to-vehicle distance control mode is displayed in combi- nation meter illuminates when MAIN switch is pressed “ON” for
less than 1.5 seconds and ready for operation. The illumination
goes off when MAIN switch is turned to OFF.
3. “CRUISE” illumination and ICC system display go off when the ignition switch is turned to OFF while MAIN switch is ON
(“CRUISE” illumination is ON and vehicle-to-vehicle distance
control mode is ready for operation).
Check For RESUME/ACCELERATE, SET/COAST, CANCEL Switches
1. Check if RESUME/ACCELERATE, SET/COAST, CANCEL switches are operated smoothly.
2. Check if buttons come up as hand is released from the buttons.
Check For Distance Switch
1. Start the engine.
2. Press the MAIN switch for less than 1.5 seconds.
3. Press the DISTANCE switch.
4. Check if the set distance indicator changes display in order of: (Long) →(Middle) →(Short).
NOTE:
The set distance indicator shows (Long) immediately after the engine starts.
CONVENTIONAL (FIXED SPEED) CRUISE CONTROL MODE
Set Checking
1. Press the MAIN switch for more than 1.5 seconds.
2. Drive the vehicle between 25 MPH (40 km/h for CANADA models) and 90 MPH (144 km/h for CANADA models).
3. Push the SET/COAST switch.
4. Confirm that the desired speed is set as hand is released from the SET/COAST switch.
NOTE:
ICC system display in the combination meter shows nothing.
SKIA6189E
SKIA6178E

ACTION TEST ACS-11
[ICC]
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Check For Increase Of Cruising Speed
1. Set the conventional (fixed speed) cruise control mode at desired speed.
2. Check if the set speed increases by 1 MPH (1.6 km/h for CANADA models) as RESUME/ACCELERATE switch is pushed.
NOTE:

If the RESUME/ACCELERATE switch is kept lifting up during cruise control driving, the vehicle speed
increases until the switch is released.

The maximum set speed is 90 MPH (144 km/h for CANADA models).
Check For Decrease Of Cruising Speed
1. Set the conventional (fixed speed) cruise control mode at desired speed.
2. Check if the set speed decreases by 1 MPH (1.6 km/h for CANADA models) as SET/COAST switch is pushed.
NOTE:

Conventional (fixed speed) cruise control mode is automatically turned off when the driving speed lowers
to 20 MPH (32 km/h for CANADA models).

The lowest set speed is 25 MPH (40 km/h for CANADA models).
Check For Cancellation Of Conventional (Fixed Speed) Cruise Control Mode (Normal Driving
Condition) In The Following Cases:
Refer to ACS-9, "Check For Cancellation Of Vehicle-To-Vehicle Distance Control Mode (Normal Driving Con-
dition) In The Following Cases:" .
Check For Restoring Speed That Is Set By Conventional (Fixed Speed) Cruise Control Mode
Before ICC Cancellation
Refer to ACS-9, "Check For Restoring Speed That Is Set By Vehicle-To-Vehicle Distance Control Mode Before
Cancellation" .
Check For MAIN Switch
1. Start the engine. Then, check the following operations are car-
ried correctly.
2. “CRUISE” lamp illuminates and ICC system indicator goes off when MAIN switch is pressed “ON” for more than 1.5 seconds,
and then ready for operation. The illumination goes off when
MAIN switch is turned to OFF.
3. “CRUISE” illumination go off when the key switch is turned to OFF while MAIN switch is ON.
Check For RESUME/ACCELERATE, SET/COAST, CANCEL Switches
1. Check if RESUME/ACCELERATE, SET/COAST, CANCEL switches are operated smoothly.
2. Check if buttons come up as hand is released from the buttons.
SKIA6188E