sensor INFINITI FX35 2005 Service Manual

ACCELERATOR CONTROL SYSTEM ACC-3
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Revision: 2005 July 2005 FX
ACCELERATOR CONTROL SYSTEMPFP:18005
Removal and InstallationABS005ZA
REMOVAL
1. Disconnect accelerator pedal position sensor harness connector.
2. Loosen mounting nuts, and remove accelerator pedal assembly. CAUTION:

Do not disassemble accelerator pedal assembly. Do not remove accelerator pedal position sen-
sor from accelerator pedal assembly.

Avoid impact from dropping etc. during handling.

Be careful to keep accelerator pedal assembly away from water.
INSTALLATION
Installation is the reverse order of removal.
INSPECTION AFTER INSTALLATION

Make sure accelerator pedal moves smoothly within the whole operation range when it is fully depressed
and released.

Make sure accelerator pedal securely returns to the fully released position.

For the electrical inspection of accelerator pedal position sensor, refer to the following.
–VQ35DE
EC-619, "
DTC P2122, P2123 APP SENSOR", EC-626, "DTC P2127, P2128 APP SENSOR" and EC-640,
"DTC P2138 APP SENSOR"
–VK45DE
EC-1302, "
DTC P2122, P2123 APP SENSOR", EC-1309, "DTC P2127, P2128 APP SENSOR" and EC-
1323, "DTC P2138 APP SENSOR"
CAUTION:
When harness connector of accelerator pedal position sensor is disconnected, perform “Acceler-
ator Pedal Released Position Learning”. Refer to EC-96, "
Accelerator Pedal Released Position
Learning" (VQ35DE) or EC-786, "Accelerator Pedal Released Position Learning" (VK45DE).
1. Accelerator pedal assembly
SBIA0332E

ACS-1
AUTO CRUISE CONTROL SYSTEM
K ELECTRICAL
CONTENTS
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SECTION ACS
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B
ACS
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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
System Diagram .................................................. ..... 6
Components Description ..................................... ..... 7
CAN Communication ........................................... ..... 7
CAN COMMUNICATION UNIT ........................ ..... 7
Switch Operation ................................................. ..... 8
ICC System Display ............................................ ..... 8
ACTION TEST ....................................................... ..... 9
ICC System Running Test ................................... ..... 9
VEHICLE-TO-VEHICLE DISTANCE CONTROL
MODE .............................................................. ..... 9
CONVENTIONAL (FIXED SPEED) CRUISE
CONTROL MODE ............................................ ... 10
LASER BEAM AIMING ADJUSTMENT ................ ... 12
Outline ................................................................. ... 12
Preparation .......................................................... ... 12
Outline of Adjustment Procedure ........................ ... 12
Setting the ICC Target Board .............................. ... 12
ADJUSTING HEIGHT OF THE TARGET ......... ... 12
ADJUSTING THE RIGHT-LEFT POSITION OF
THE TARGET ................................................... ... 13 SETTING THE TARGET ..................................
... 13
Aiming Adjustment ............................................... ... 14
CHECK AFTER THE ADJUSTMENT ............... ... 17
ELECTRICAL UNITS LOCATION ......................... ... 18
Component Parts and Harness Connector Location ... 18
WIRING DIAGRAM ................................................ ... 19
Schematic ............................................................ ... 19
Wiring Diagram — ICC — ................................... ... 20
TERMINALS AND REFERENCE VALUE .............. ... 27
Terminals and Reference Value for ICC Unit ....... ... 27
Terminals and Reference Value for ICC Sensor .. ... 28
TROUBLE DIAGNOSIS — GENERAL DESCRIP-
TION ....................................................................... ... 29
Work Flow ............................................................ ... 29
CONSULT-II Function .......................................... ... 30
DESCRIPTION ................................................. ... 30
CONSULT-II BASIC OPERATION .................... ... 30
WORK SUPPORT ............................................ ... 31
SELF-DIAGNOSTIC RESULTS ........................ ... 32
DATA MONITOR .............................................. ... 32
ACTIVE TEST .................................................. ... 34
Self-Diagnostic Function ...................................... ... 36
WITH CONSULT-II ........................................... ... 36
WITHOUT CONSULT-II .................................... ... 36
SELF-DIAGNOSIS BY ICC SYSTEM DISPLAY
WILL NOT RUN ................................................ ... 38
TROUBLE DIAGNOSIS FOR SELF-DIAGNOSTIC
ITEMS ..................................................................... ... 41
Diagnostic Trouble Code (DTC) Chart ................ ... 41
DTC 11 CONTROL UNIT .................................... ... 42
DTC 20 CAN COMM CIRCUIT ............................ ... 43
DTC 31 POWER SUPPLY CIR, DTC 34 POWER
SUPPLY CIR 2 .................................................... ... 43
DTC 41 VHCL SPEED SE CIRC ......................... ... 44
DTC 43 ABS/TCS/VDC CIRC ............................. ... 45
DTC 45 BRAKE SW/STOP L SW ........................ ... 45
DTC 46 OPERATION SW CIRC .......................... ... 47
DTC 61 PRESS SEN CIRCUIT ........................... ... 48
DTC 62 BOOSTER SOL/V CIRCUIT .................. ... 50
DTC 63 RELEASE SW CIRCUIT ........................ ... 51

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

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.

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
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DESCRIPTION ACS-7
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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-12
[ICC]
LASER BEAM AIMING ADJUSTMENT
Revision: 2005 July 2005 FX
LASER BEAM AIMING ADJUSTMENTPFP:00026
OutlineAKS006YI
Adjust the laser beam aiming every time the ICC sensor is removed or installed.
CAUTION:

Place the vehicle on the level ground when the laser beam aiming adjustment is operated.

Follow the CONSULT-II when adjusting the laser beam aiming (laser beam aiming adjustment can-
not be operated without CONSULT-II).
PreparationAKS006YJ

Adjust the tire pressure to the specified value.

See that there is no load in the vehicle.

Coolant, engine oil filled up to correct level and full fuel tank.

Shift the gear into “P” position and release the parking brake.

Clean the ICC sensor with a soft cloth.
Outline of Adjustment ProcedureAKS006YK
1. Set up the ICC target board [KV99110100 (J-45718)].
2. Adjust the sensor following the procedure on CONSULT-II. (Turn manually the screw for up-down position adjustment. ICC sensor automatically adjust the right-left position.)
Setting the ICC Target BoardAKS006YL
Accurate ICC target board setting is required for the laser beam aiming adjustment.
CAUTION:
ICC system does not function normally if laser beam aiming is not accurate.
ADJUSTING HEIGHT OF THE TARGET
1. Attach a triangle scale at the center.
SKIA6179E
SKIA5974E

LASER BEAM AIMING ADJUSTMENT ACS-13
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2. Adjust the height of the target board stand so that the point of
the triangle aims the center of the ICC sensor.
ADJUSTING THE RIGHT-LEFT POSITION OF THE TARGET
1. Attach a scale (at least 350 mm [14 in] or longer) or stick asshown in the figure.
2. Suspend a thread with weight on the tip of the thread to 310 mm (12.2 in) left side of the target board from the center of the tar-
get board on top.
SETTING THE TARGET
1. Suspend a thread with weight on tip to splice the center of the front and rear bumpers. Then, mark the
center point on the ground as each weight points.
2. Link the front and rear bumpers center points marked on the ground, and mark a point 5 m (16.4ft) ahead of the sensor, on the extended line of the previous link line of the bumper center points. Then, adjust the
position of the target board so that the weight come on the top of the marked point [5 m (16.4ft) ahead of
the sensor] and face to the vehicle.
3. Adjust the position of the target board so that the extended line that links the center of the rear window glass (the center of the
rear window defogger pattern) and the center of the windshield
(the setting part of the room mirror) align with the weight sus-
pended from the board.
4. Remove the thread suspended to the left side of board and sus- pend a thread with weight on tip on the center of the target
board. Then mark the point of weight on the ground.
SKIA6180E
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LASER BEAM AIMING ADJUSTMENT ACS-15
[ICC]
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3. Start the engine, wait for at least 10 seconds, and touch “START
(NISSAN BASED VHCL)”.
4. Touch “ICC”. If “ICC” is not indicated, go to GI-39, "
CONSULT-II Data Link
Connector (DLC) Circuit" .
5. Touch “WORK SUPPORT”.
6. Touch “LASER BEAM ADJUST”.
7. Touch “START”. CAUTION:
If the adjustment screen does not appear on the CONSULT-
II screen in 10 seconds. After touching “LASER BEAM
ADJUST” screen, the following causes may be considered:

Target is not set accurately.

There is not enough space beside the target.

Deformation of vehicle or the surrounding equipment
unit, bracket, or the surrounding equipment is causing
inappropriate installation of sensor and aiming may be
set out of the adjustable range.
SAIA0450E
PKIB4143E
PKIA8867E
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ACS-16
[ICC]
LASER BEAM AIMING ADJUSTMENT
Revision: 2005 July 2005 FX

The area is not suitable for the adjustment work.

ICC sensor is not clean.
8. After the CONSULT-II displays “ADJUST THE VERTICAL OF LASER BEAM AIMING” turn the up-down direction adjusting
screw until “U/D CORRECT” value is set in the range of ±4.
CAUTION:
Turn the screw slowly. The value change on display is
slower than actual movement of the ICC sensor. Wait for 2
seconds every time the screw is turned half a rotation.
NOTE:
Turning the screw to the right lowers the aiming and to the left
lifts the aiming.
9. When “U/D CORRECT” value indicates ±4, confirm that the margin of value remains within ±4 at least for
2 seconds with no equipment or hand touching the ICC sensor.
When “COMPLETED THE VERTICAL AIMING OF LASER
BEAM” appears on screen, touch “END”.
CAUTION:
Be sure that the margin of “U/D CORRECT” is within ±4 with
ICC sensor unit is untouched.
10. Confirm that “ADJUSTING AUTOMATIC HORIZONTAL LASER BEAM AIMING” is on screen and wait for a while (maximum: 10
seconds).
SKIA1221E
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