INFINITI FX35 2004 User Guide

ACS-2Revision: 2004 November 2004 FX35/FX45DTC 63 RELEASE SW CIRCUIT ........................... 48
DTC 65 PRESSURE CONTROL ............................ 49
DTC 74 LASER BEAM OFF CNTR ........................ 49
DTC 90 STOP LAMP RLY FIX ............................... 50
DTC 92 ECM CIRCUIT ........................................... 54
DTC 96 NP RANGE ............................................... 55
DTC 97 AT CIRCUIT .............................................. 56
DTC 98 GEAR POSITION ...................................... 56
DTC 102 RADAR STAIN ........................................ 57
DTC 103 LASER SENSOR FAIL ............................ 58
DTC 104 LASER AIMING INCMP .......................... 58
DTC 107 LASER COMM FAIL ................................ 58
DTC 109 LASER HIGH TEMP ............................... 58
TROUBLE DIAGNOSIS FOR SYMPTOMS .............. 59
Symptom Chart ....................................................... 59
Symptom 1: ON/OFF Switch Does Not Switch ON*
1
. ON/OFF Switch Does Not Switch OFF*
2 . ............ 60
Symptom 2: The ICC System Cannot Be Set (ON/
OFF Switch Turns On/Off). ..................................... 60
Symptom 3: The ICC System Cannot Be Operated by the CANCEL Switch, ACCEL/RES Switch, or
DISTANCE Switch. ................................................. 61
Symptom 4: The ICC System Is Not Cancelled
When the Gear Is in Other Than ‘D’. ....................... 62
Symptom 5: Chime Does Not Sound. ..................... 62
Symptom 6: Driving Force Is Hunting. .................... 63
Symptom 7: The ICC System Frequently Cannot
Detect the Vehicle Ahead/The Detection Zone Is
Short. ...................................................................... 63
Symptom 8: The System Does Not Detect the Vehi-
cle Ahead at All. ...................................................... 63
ELECTRICAL COMPONENT INSPECTION ............. 65
ICC Steering Switch ................................................ 65
ICC Brake Switch and Stop Lamp Switch ............... 65
Booster Solenoid ..................................................... 65
Release Switch ....................................................... 66
REMOVAL AND INSTALLATION .............................. 67
ICC Unit .................................................................. 67
ICC Sensor ............................................................. 67
ICC Steering Switch ................................................ 67

AUTOMATIC SPEED CONTROL DEVICE (ASCD)
ACS-3
[ASCD]
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Revision: 2004 November 2004 FX35/FX45
[ASCD]AUTOMATIC SPEED CONTROL DEVICE (ASCD)PFP:18930
DescriptionAKS007XN
Regarding the information for ASCD system, refer to EC-657, "AUTOMATIC SPEED CONTROL DEVICE
(ASCD)" (VQ35DE), EC-1334, "AUTOMATIC SPEED CONTROL DEVICE (ASCD)" (VK45DE).

ACS-4
[ICC]
PRECAUTIONS
Revision: 2004 November 2004 FX35/FX45
[ICC]PRECAUTIONSPFP:00001
Precautions for Supplemental Restraint System (SRS) “AIR BAG” and “SEAT
BELT PRE-TENSIONER”
AKS007IE
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 ServiceAKS006Y8

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

Turn the ON/OFF switch OFF in conditions similar to driving, suchlike Free rollers or 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.
Wiring Diagrams and Trouble Diagnosis AKS006Y9
When you read wiring diagrams, refer to the followings:

Refer to GI-15, "How to Read Wiring Diagrams" in GI section

Refer to PG-3, "POWER SUPPLY ROUTING CIRCUIT" for power distribution circuit in PG section
When you perform trouble diagnosis, refer to the followings:

Refer to GI-11, "HOW TO FOLLOW TEST GROUPS IN TROUBLE DIAGNOSES" in GI section

Refer to GI-27, "How to Perform Efficient Diagnosis for an Electrical Incident" in GI section

PREPARATION
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Revision: 2004 November 2004 FX35/FX45
PREPARATIONPFP:00002
Special Service ToolAKS006YA
The actual shapes of Kent-Moore tools may differ from those of special service tools illustrated here.
Tool number
(Kent-Moore No.)
Tool nameDescription
KV99110100
(J-45718)
ICC target boardLaser beam aiming adjustment
PKIA0358J

ACS-6
[ICC]
DESCRIPTION
Revision: 2004 November 2004 FX35/FX45
DESCRIPTIONPFP:00000
OutlineAKS006YB
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 same speed as other vehicles can be maintained without the
constant need to adjust the operating speed as with a normal cruise control system.
The system is intended to enhance the operation of the vehicle when following another vehicle 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 DiagramAKS006YC
SKIA5972E

DESCRIPTION
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Components DescriptionAKS006YD
CAN CommunicationAKS00815
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-6, "CAN Communication Unit" .
Switch OperationAKS006YF
The system is operated by a master ON/OFF switch and four control switches, all mounted on the steering
wheel.
ComponentVe h i -
cle-to-
vehi-
cle dis-
tance
con-
trol
modeCon-
ven-
tional
(fixed
speed)
cruise
con-
trol
modeBrake
assist
(with
pre-
view
brake)Description
ICC unit×××Operates throttle control actuator and brake booster based on that sensor
signals and CAN communication data, then controls vehicle distance.
ICC sensor××Irradiate laser beam, and receives reflected laser beam to measure dis-
tance from preceding vehicle.
ECM××Transmits throttle position signal and ICC steering switch signal to ICC unit.
ABS actuator and electric
unit (control unit)×××Transmits wheel speed signal to ICC unit.
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.
TCM××Transmits gear position signal and output shaft revolution signal to ICC
unit.
SKIA5973E

ACS-8
[ICC]
DESCRIPTION
Revision: 2004 November 2004 FX35/FX45
ICC System DisplayAKS006YG
No. Switch name Description
1 ACCEL/RES switch Resumes set speed or increases speed incrementally
2 COAST/SET switch Sets desired cruise speed, reduces speed incrementally
3 ON/OFF 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
SKIA6177E
No. Component 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 indicatorDisplay the selected distance between vehicles set with the DISTANCE
switch.
4 Own vehicle indicator Indicates the base vehicle.
5 ON/OFF switch indicator lamp (Green) Indicates that the ON/OFF switch is ON.
6Intelligent cruise control system warning
lamp (Yellow)The light comes on if there is a malfunction in the ICC system.
7 Cruise set switch indicator lamp Indicates that the conventional cruise control mode is controlled.

ACTION TEST
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ACTION TESTPFP:00000
ICC System Running TestAKS006YH
VEHICLE-TO-VEHICLE DISTANCE CONTROL MODE
Set Checking
1. Press the ON/OFF 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 COAST/SET switch.
4. Confirm that the desired speed is set as hand is released from the COAST/SET 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 meters.
Check For Increase Of The 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 ACCEL/RES 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 The 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 COAST/SET 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 The Cancellation Of Vehicle-To-Vehicle Distance Control Mode (Normal Driving
Condition) In The Following Cases:
1. When the brake pedal is depressed after the system is turned on.
2. When the select lever is shifted into other than “D” including manual shift.
3. When the ON/OFF switch is turned off.
4. When CANCEL switch is operated.
Check For Restoring The 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 ACCEL/RES switch with 25 MPH (40 km/h for CANADA models) or above.
2. Cancel the system by shifting the select lever into other than “D”, Then, check if the speed set before the
cancellation is restored when ACCEL/RES switch is pressed.
3. Check if the speed previously set is restored when ACCEL/RES switch is operated with driving 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: 2004 November 2004 FX35/FX45
Check For ON/OFF Switch
1. Start the engine.Then, check the following operations are car-
ried correctly.
2. Vehicle-to-vehicle distance control mode is displayed in speed-
ometer illuminates when ON/OFF switch is pressed “ON” for
less than 1.5 seconds and ready for operation.The illumination
goes off when ON/OFF switch is turned to OFF.
3. “CRUISE” illumination and ICC system display go off when the
key switch is turned to OFF while ON/OFF switch is ON
(“CRUISE” illumination is ON and vehicle-to-vehicle distance
control mode is ready for operation).
Check For ACCEL/RES, COAST/SET, CANCEL Switches
1. Check if ACCEL/RES, COAST/SET, 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 ON/OFF 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 ON/OFF 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 COAST/SET switch.
4. Confirm that the desired speed is set as hand is released from the COAST/SET switch.
NOTE:

ICC system display in the combination meters shows nothing.
SKIA6189E
SKIA6178E

ACTION TEST
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Check For Increase Of The 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 ACCEL/RES switch is
pushed.
NOTE:

If the ACCEL/RES 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 The 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 COAST/SET 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) due to the deceleration of the vehicle ahead.

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