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ACC-4
ACCELERATOR CONTROL SYSTEM
Revision: 2006 January2006 M35/M45
6. Pull up the floor carpet.
7. Remove mounting nuts of accelerator pedal bracket.
8. Remove accelerator pedal bracket and lever assembly.
CAUTION:
Do not disassemble accelerator lever. Do not remove accelerator pedal position sensor from
accelerator lever.
Avoid impact from dropping etc. during handling.
Be careful to keep accelerator lever 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-626, "
DTC P2122, P2123 APP SENSOR".
–VK45DE
EC-1358, "
DTC P2122, P2123 APP SENSOR".
CAUTION:
When harness connector of accelerator pedal position sensor is disconnected, perform “Acceler-
ator Pedal Released Position Learning”. Refer to EC-95, "
Accelerator Pedal Released Position
Learning" (VQ35DE) or EC-806, "Accelerator Pedal Released Position Learning" (VK45DE).
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ACS-1
AUTO CRUISE CONTROL SYSTEM
K ELECTRICAL
CONTENTS
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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
IN VEHICLE-TO-VEHICLE DISTANCE CON-
TROL MODE ......................................................... 8
IN CONVENTIONAL (FIXED SPEED) CRUISE
CONTROL MODE ................................................. 8
ICC System Display ................................................. 9
IN VEHICLE-TO-VEHICLE DISTANCE CON-
TROL MODE ......................................................... 9
IN CONVENTIONAL (FIXED SPEED) CRUISE
CONTROL MODE ................................................. 9
ACTION TEST .......................................................... 10
ICC System Running Test ...................................... 10
VEHICLE-TO-VEHICLE DISTANCE CONTROL
MODE ................................................................. 10
CONVENTIONAL (FIXED SPEED) CRUISE
CONTROL MODE ................................................ 11LASER BEAM AIMING ADJUSTMENT ................... 13
Outline .................................................................... 13
Preparation ............................................................. 13
Outline of Adjustment Procedure ............................ 13
Setting the ICC Target Board .................................. 13
ADJUSTING HEIGHT OF THE TARGET ............ 13
ADJUSTING THE RIGHT-LEFT POSITION OF
THE TARGET ...................................................... 14
SETTING THE TARGET ..................................... 14
Aiming Adjustment .................................................. 16
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 ................. 26
Terminals and Reference Value for ICC Sensor Inte-
grated Unit .............................................................. 26
TROUBLE DIAGNOSIS - GENERAL DESCRIP-
TION .......................................................................
... 27
Fail-Safe Function .................................................. 27
Work Flow ............................................................... 27
CONSULT-II Function (ICC) ................................... 28
DESCRIPTION .................................................... 28
CONSULT-II BASIC OPERATION ....................... 28
WORK SUPPORT ............................................... 29
SELF-DIAGNOSTIC RESULTS ........................... 30
DATA MONITOR ................................................. 30
ACTIVE TEST ..................................................... 33
Self-Diagnostic Function ......................................... 34
WITH CONSULT-II .............................................. 34
WITHOUT CONSULT-II ....................................... 34
SELF-DIAGNOSIS BY DOT MATRIX LCD WILL
NOT RUN ............................................................ 36
TROUBLE DIAGNOSIS FOR SELF-DIAGNOSTIC
ITEMS ........................................................................ 39
Diagnostic Trouble Code (DTC) Chart ................... 39
DTC 0 CONTROL UNIT ......................................... 41
DTC 1 POWER SUPPLY CIR, DTC 2 POWER SUP-
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ACS-2Revision: 2006 January2006 M35/M45 PLY CIR 2 ............................................................... 41
DTC 3 VHCL SPEED SE CIRC .............................. 42
DTC 4 ABS/TCS/VDC CIRC .................................. 42
DTC 5 BRAKE SW/STOP L SW ............................. 43
DTC 6 OPERATION SW CIRC ............................... 47
DTC 12 LASER BEAM OFFCNTR ......................... 48
DTC 13 STOP LAMP RLY FIX ............................... 49
DTC 14 ECM CIRCUIT ........................................... 55
DTC 15 GEAR POSITION ...................................... 56
DTC 16 RADAR STAIN .......................................... 57
DTC 18 LASER AIMING INCMP ............................ 57
DTC 21 UNIT HIGH TEMP ..................................... 57
DTC 24 NP RANGE ............................................... 58
DTC 25 SHIFT RANGE IND ................................... 58
DTC 26 ECD MODE MALF .................................... 59
DTC 27 ECD PWR SUPLY CIR .............................. 59
DTC 100 CAN COMM CIRCUIT ............................. 60
DTC 110 CONTROL UNIT (CAN) ........................... 60
TROUBLE DIAGNOSIS FOR SYMPTOMS .............. 61
Symptom Chart ....................................................... 61
Symptom 1: MAIN Switch Does Not Turn ON*
1 ,
MAIN Switch Does Not Turn OFF*
2 ........................ 62Symptom 2: ICC System Cannot Be Set (MAIN
Switch Turns ON/OFF) ............................................ 63
Symptom 3: ICC System Cannot Be Operated by
CANCEL Switch, RESUME/ACCELERATE Switch
or DISTANCE Switch .............................................. 64
Symptom 4: ICC System Is Not Cancelled When
the A/T Selector Lever Is In Other Than “D” and “M” ... 64
Symptom 5: Chime Does Not Sound ...................... 65
Symptom 6: Driving Force Is Hunting ..................... 66
Symptom 7: ICC System Frequently Cannot Detect
the Vehicle Ahead/ Detection Zone Is Short ........... 66
Symptom 8: The System Does Not Detect the Vehi-
cle Ahead at All ....................................................... 67
ELECTRICAL COMPONENT INSPECTION ............. 68
ICC Steering Switch ................................................ 68
ICC Brake Hold Relay ............................................. 68
ICC Brake Switch and Stop Lamp Switch ............... 68
REMOVAL AND INSTALLATION .............................. 69
ICC Sensor Integrated Unit ..................................... 69
REMOVAL ............................................................ 69
INSTALLATION .................................................... 69
ICC Steering Switch ................................................ 69
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AUTOMATIC SPEED CONTROL DEVICE (ASCD)
ACS-3
[ASCD]
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[ASCD]AUTOMATIC SPEED CONTROL DEVICE (ASCD)PFP:18930
DescriptionNKS004CB
Regarding the information for ASCD system, refer to EC-36, "AUTOMATIC SPEED CONTROL DEVICE
(ASCD)" (VQ35DE), EC-746, "AUTOMATIC SPEED CONTROL DEVICE (ASCD)" (VK45DE).
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![INFINITI M35 2006 Factory Service Manual ACS-4
[ICC]
PRECAUTIONS
Revision: 2006 January2006 M35/M45
[ICC]PRECAUTIONSPFP:00001
Precautions for Supplemental Restraint System (SRS) “AIR BAG” and “SEAT
BELT PRE-TENSIONER”
NKS004CC
The INFINITI M35 2006 Factory Service Manual ACS-4
[ICC]
PRECAUTIONS
Revision: 2006 January2006 M35/M45
[ICC]PRECAUTIONSPFP:00001
Precautions for Supplemental Restraint System (SRS) “AIR BAG” and “SEAT
BELT PRE-TENSIONER”
NKS004CC
The](/manual-img/42/57023/w960_57023-12.png)
ACS-4
[ICC]
PRECAUTIONS
Revision: 2006 January2006 M35/M45
[ICC]PRECAUTIONSPFP:00001
Precautions for Supplemental Restraint System (SRS) “AIR BAG” and “SEAT
BELT PRE-TENSIONER”
NKS004CC
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.
WAR NING :
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 ServiceNKS004CD
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 as free rollers or a chassis dynamometer.
Do not use the ICC sensor integrated unit removing from vehicle. Never disassemble and remodel.
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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PREPARATION
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PREPARATIONPFP:00002
Special Service ToolsNKS004CE
The actual shapes of Kent-Moore tools may differ from those of special service tools illustrated here.
Tool number
(Kent - Moore No.)
To o l n a m eDescription
KV99110100
(J-45718)
ICC target boardUses for laser beam aiming adjustment
PKIA0358J
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![INFINITI M35 2006 Factory Service Manual ACS-6
[ICC]
DESCRIPTION
Revision: 2006 January2006 M35/M45
DESCRIPTIONPFP:00000
OutlineNKS004CF
The Intelligent Cruise Control (ICC) system automatically maintains a selected distance from INFINITI M35 2006 Factory Service Manual ACS-6
[ICC]
DESCRIPTION
Revision: 2006 January2006 M35/M45
DESCRIPTIONPFP:00000
OutlineNKS004CF
The Intelligent Cruise Control (ICC) system automatically maintains a selected distance from](/manual-img/42/57023/w960_57023-14.png)
ACS-6
[ICC]
DESCRIPTION
Revision: 2006 January2006 M35/M45
DESCRIPTIONPFP:00000
OutlineNKS004CF
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 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 ICC sensor integrated unit 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
depresses 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 DiagramNKS004CG
PKIB8345E
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![INFINITI M35 2006 Factory Service Manual DESCRIPTION
ACS-7
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Components DescriptionNKS004CH
CAN CommunicationNKS004CI
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DESCRIPTION
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Components DescriptionNKS004CH
CAN CommunicationNKS004CI
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-34, "CAN Communication Unit" .
ComponentVehicle-to-
vehicle
distance
control modeConventional
(fixed speed)
cruise
control modeBrake assist
(with pre-
view func-
tion)Description
ICC sensor integrated unit
Controls vehicle distance by operating electric throttle
control actuator based on that sensor signals and
CAN communication data.
Controls vehicle distance by transmitting deceleration
degree commandment value signal to ABS actuator
and electric unit (control unit) when deceleration with
brake is needed.
Irradiates laser beam, and receives reflected laser
beam to measure distance from preceding vehicle.
ECM
Transmits accelerator pedal position signal, ICC brake
switch signal, stop lamp switch signal and ICC steering
switch signal to ICC sensor integrated unit through CAN
communication.
ABS actuator and electric
unit (control unit)
Transmits vehicle speed signal (wheel speed) and
stop lamp switch signal to ICC sensor integrated unit
through CAN communication.
Receives Deceleration degree commandment value
signal from ICC sensor integrated unit, and controls
brake fluid pressure with the ABS motor.
BCM
Transmits front wiper request signal to ICC sensor inte-
grated unit through CAN communication.
TCM
Transmits gear position signal and output shaft revolu-
tion signal to ICC sensor integrated unit through CAN
communication.
Unified meter and A/C amp.
Receives meter display signal, ICC warning lamp signal
and buzzer output signal from ICC sensor integrated
unit through CAN communication.
ICC brake switch
Transmits operating signal to ECM when depressing
brake pedal. ICC sensor integrated unit cancels cruise
system at driver's brake operation.
Stop lamp switch
Transmits operating signal to ECM and ABS actuator
and electric unit (control unit) when depressing brake
pedal. ICC sensor integrated unit cancels cruise system
at driver's brake operation.