2007 INFINITI M35 cruise control

ABCDEFGHIJKMLQUICK REFERENCE INDEX AGENERAL INFORMATIONGIGeneral InformationBENGINEEMEngine MechanicalLUEngine Lubrication SystemCOEngine Cooling SystemECEngine Control SystemFLFuel SystemEXExhaust SystemACCAccelerator Control SystemCTRANSMISSION/
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mentsLMAINTENANCEMAMaintenanceMINDEXIDXAlphabetical IndexEdition: January 2005
Revision:April 2007

ACS-1
AUTO CRUISE CONTROL SYSTEM
K ELECTRICAL
CONTENTS
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SECTION ACS
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ACS
Revision: 2007 April2007 M35/M45
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
IN VEHICLE-TO-VEHICLE DISTANCE CON-
TROL MODE ....................................................... 10
IN CONVENTIONAL (FIXED SPEED) CRUISE
CONTROL MODE ............................................... 10
ICC System Display ................................................ 11
IN VEHICLE-TO-VEHICLE DISTANCE CON-
TROL MODE ........................................................ 11
IN CONVENTIONAL (FIXED SPEED) CRUISE
CONTROL MODE ................................................ 11
ACTION TEST .......................................................... 12
ICC System Running Test ...................................... 12
VEHICLE-TO-VEHICLE DISTANCE CONTROL
MODE ................................................................. 12
CONVENTIONAL (FIXED SPEED) CRUISE
CONTROL MODE ............................................... 13LASER BEAM AIMING ADJUSTMENT ................... 15
Outline .................................................................... 15
Preparation ............................................................. 15
Outline of Adjustment Procedure ............................ 15
Setting the ICC Target Board .................................. 15
ADJUSTING HEIGHT OF THE TARGET ............ 15
ADJUSTING THE RIGHT-LEFT POSITION OF
THE TARGET ...................................................... 16
SETTING THE TARGET ..................................... 16
Aiming Adjustment .................................................. 18
CHECK AFTER THE ADJUSTMENT .................. 20
ELECTRICAL UNITS LOCATION ............................ 21
Component Parts and Harness Connector Location ... 21
WIRING DIAGRAM ................................................... 22
Schematic ............................................................... 22
Wiring Diagram — ICC — ...................................... 23
TERMINALS AND REFERENCE VALUE ................. 28
Terminals and Reference Value for ICC Sensor Inte-
grated Unit .............................................................. 28
TROUBLE DIAGNOSIS - GENERAL DESCRIP-
TION .......................................................................... 29
Fail-Safe Function .................................................. 29
Work Flow ............................................................... 29
CONSULT-II Function (ICC) ................................... 30
DESCRIPTION .................................................... 30
CONSULT-II BASIC OPERATION ....................... 30
WORK SUPPORT ............................................... 30
SELF-DIAGNOSTIC RESULTS ........................... 31
DATA MONITOR ................................................. 31
ACTIVE TEST ..................................................... 33
Self-Diagnostic Function ......................................... 34
WITH CONSULT-II .............................................. 34
WITHOUT CONSULT-II ....................................... 35
SELF-DIAGNOSIS BY DOT MATRIX LCD WILL
NOT RUN ............................................................ 36
TROUBLE DIAGNOSIS FOR SELF-DIAGNOSTIC
ITEMS ........................................................................ 40
Diagnostic Trouble Code (DTC) Chart ................... 40
DTC 0 CONTROL UNIT ......................................... 42
DTC 1 POWER SUPPLY CIR, DTC 2 POWER SUP-

ACS-6
[ICC]
DESCRIPTION
Revision: 2007 April2007 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.

ACS-8
[ICC]
DESCRIPTION
Revision: 2007 April2007 M35/M45

Items of output signal to be checked with “DATA MONITOR”.

Items of output signal to be checked with “ACTIVE TEST”.
Shift position signal×
TCMD RANGE SW
[ON/OFF]ICC sensor integrated unit receives shift position signal from
TCM with CAN communication.
×NP RANGE SW
[ON/OFF]ICC sensor integrated unit receives shift position signal from
TCM with CAN communication.
Output shaft revo-
lution signal×VHCL SPD AT
[km/h] or [mph]ICC sensor integrated unit receives A/T vehicle speed sen-
sor signal (output shaft revolution signal) from TCM with
CAN communication.
Current gear posi-
tion signal×GEAR
[1, 2, 3, 4, 5]ICC sensor integrated unit receives current gear position sig-
nal from TCM with CAN communication.
Vehicle speed sig-
nal×ABS actuator and
electric unit (con-
trol unit)VHCL SPEED SE
[km/h] or [mph]ICC sensor integrated unit receives vehicle speed signal
(wheel speed) from ABS actuator and electric unit (control
unit) with CAN communication.
Front wiper request
signal×BCMWIPER SW
[OFF/LOW/HIGH]ICC sensor integrated unit receives front wiper request signal
from BCM with CAN communication. Signal name CAN Transmission unitMonitored Item
[unit]Description
Signal name CAN Reception unitMonitored Item
[unit]Description
Meter display signal×
Combination
meter
(through unified
meter and A/C
amp.)CRUISE LAMP
[ON/OFF]
ICC sensor integrated unit transmits meter display signal to
combination meter (through unified meter and A/C amp.)
with CAN communication. ×OWN VHCL
[ON/OFF]
×VHCL AHEAD
[ON/OFF]
×SET DISP IND
[ON/OFF]
ICC system warning
lamp signal×ICC WARNING
[ON/OFF]ICC sensor integrated unit transmits ICC system warning
lamp signal to combination meter (through unified meter and
A/C amp.) with CAN communication.
Buzzer output signal×BUZZER O/P
[ON/OFF] ICC sensor integrated unit transmits buzzer output signal to
combination meter (through unified meter and A/C amp.)
with CAN communication.
ICC brake hold relay
drive signalICC brake hold
relaySTP LMP DRIVE
[ON/OFF]ICC sensor integrated unit outputs stop lamp drive output
signal to ICC brake hold relay.
Signal name CAN Reception unit Test Item Description
Buzzer output signal×Combination
meter
(through unified
meter and A/C
amp.)ICC BUZZERAble to beep the ICC warning chime with a driving signal
from ICC sensor integrated unit.

Meter display signal

ICC system warn-
ing lamp signal×METER LAMPAble to illuminate the ICC system warning lamp and the
MAIN switch indicator lamp with a driving signal from the
ICC sensor integrated unit.
ICC brake hold relay
drive signalICC brake hold
relaySTOP LAMPAble to turn ON the ICC brake hold relay with a driving sig-
nal from the ICC sensor integrated unit.

DESCRIPTION
ACS-9
[ICC]
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ACS
Revision: 2007 April2007 M35/M45
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-52, "CAN Communication Signal Chart" .
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.

ACS-10
[ICC]
DESCRIPTION
Revision: 2007 April2007 M35/M45
Switch OperationNKS004CJ
The system is operated by MAIN switch and four control switches, all mounted on the steering wheel.
IN VEHICLE-TO-VEHICLE DISTANCE CONTROL MODE
IN CONVENTIONAL (FIXED SPEED) CRUISE CONTROL MODE
PKIB8346E
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 CANCEL switch Deactivates system without erasing set speed.
4 DISTANCE switch Changes the following distance from: Long, Middle, Short.
5 MAIN switch Master switch to activate the system (press for less than 1.5 seconds)
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 CANCEL switch Deactivates system without erasing set speed.
4 DISTANCE switch Ineffective in this mode
5 MAIN switch Master switch to activate the system (press for more than 1.5 seconds)

DESCRIPTION
ACS-11
[ICC]
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ACS
Revision: 2007 April2007 M35/M45
ICC System DisplayNKS004CK
The status of ICC system is displayed by dot matrix LCD, MAIN switch indicator lamp and ICC system warning
lamp on the combination meter.
IN VEHICLE-TO-VEHICLE DISTANCE CONTROL MODE
IN CONVENTIONAL (FIXED SPEED) CRUISE CONTROL
MODE
PKIB8347E
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 indicatorIndicates 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.
6Intelligent cruise control system warning
lamp (Orange)The light comes on if there is a malfunction in the ICC system.
PKIB4982J
No. Display items Description
1 Set switch indicatorIndicates that the set conventional (fixed speed) cruise control mode is con-
trolled.
2 MAIN switch indicator lamp (Green) Indicates that the MAIN switch is ON.
3Intelligent cruise control system warning
lamp (Orange)The light comes on if there is a malfunction in the ICC system.

ACS-12
[ICC]
ACTION TEST
Revision: 2007 April2007 M35/M45
ACTION TESTPFP:00000
ICC System Running TestNKS004CL
NOTE:
ICC system can set VEHICLE-TO-VEHICLE DISTANCE CONTROL MODE and CONVENTIONAL (FIXED
SPEED) CRUISE CONTROL MODE when selector lever is in “D” and “M” position.
VEHICLE-TO-VEHICLE DISTANCE CONTROL MODE
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.
Set Checking
1. Press the MAIN switch for less than 1.5 seconds.
2. Drive the vehicle between 40 km/h (25 MPH) and 144 km/h (90 MPH).
3. Push down the SET/COAST switch.
4. Confirm that the desired speed is set as hand is released from the SET/COAST switch.
NOTE:
The set vehicle speed is displayed on the dot matrix LCD 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 km/h (1 MPH) as RESUME/ACCELERATE switch is pushed up.
NOTE:
The maximum set speed of the vehicle-to-vehicle distance control mode is 144 km/h (90 MPH).
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 km/h (1 MPH) as SET/COAST switch is pushed down.
NOTE:

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

The minimum set speed of the vehicle-to-vehicle distance control mode is 40 km/h (25 MPH).
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 to the “N” (Neutral) position.
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 brake pedal. Then, check if the speed before cancellation is
restored when pushing up RESUME/ACCELERATE switch with 40 km/h (25 MPH) or above.
2. Cancel the system by shifting the selector lever to “N”. Then, check if the speed set before the cancella-
tion is restored when RESUME/ACCELERATE switch is pushed up.
3. Check if the speed previously set is restored when RESUME/ACCELERATE switch is operated with driv-
ing 40 km/h (25 MPH), after canceling vehicle-to-vehicle distance control mode by operating the CANCEL
switch.