Service Manuals, User Guides, Schematic Diagrams or docs for : . Car Manuals Infiniti Q45 FY33 F50 2001-2006 Approved 2006_Q45 acs

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acs

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AUTO CRUISE CONTROL SYSTEM

K ELECTRICAL

AUTO CRUISE CONTROL SYSTEM
SECTION ACS B

E
CONTENTS
ASCD SETTING THE TARGET .................................... 15 . F
Aiming Adjustment ................................................. 16 .
AUTOMATIC SPEED CONTROL DEVICE (ASCD) 3 ..... CHECK AFTER THE ADJUSTMENT ................. 18 .
Description .............................................................. 3
. ELECTRICAL UNITS LOCATION ........................... 19 . G
Component Parts and Harness Connector Location 19 ...
ICC WIRING DIAGRAM .................................................. 20 .
Schematic .............................................................. 20
.
PRECAUTIONS ......................................................... 4 . H
Wiring Diagram -- ICC -- ..................................... 21 .
Precautions for Supplemental Restraint System TERMINALS AND REFERENCE VALUE ................ 29 .
(SRS) "AIR BAG" and "SEAT BELT PRE-TEN- Terminals and Reference Value for ICC Unit ......... 29 .
SIONER" ................................................................. 4
. Terminals and Reference Value for ICC Sensor .... 30 . I
Precautions for ICC System Service ....................... 4 . Terminals and Reference Value for ICC Warning
PREPARATION .......................................................... 5 . Chime (Without LDW Models) ............................... 31 .
Special Service Tools .............................................. 5 . Terminals and Reference Value for ICC Warning J
DESCRIPTION ........................................................... 6. Chime (With LDW Models) .................................... 31 .
Outline ..................................................................... 6
. TROUBLE DIAGNOSIS - GENERAL DESCRIP-
VEHICLE-TO-VEHICLE DISTANCE CONTROL TION ......................................................................... 32
.
MODE .................................................................. 6
. ACS
Work Flow .............................................................. 32
.
CONVENTIONAL (FIXED SPEED) CRUISE CONSULT-II Function (ICC) .................................. 33 .
CONTROL MODE ................................................ 6 . CONSULT-II BASIC OPERATION ...................... 33 .
BRAKE ASSIST (WITH PREVIEW FUNCTION) 6 ..... WORK SUPPORT .............................................. 33 . L
Functional Diagram ................................................. 7 . SELF-DIAG RESULTS ....................................... 34 .
Components Description ......................................... 9 . DATA MONITOR ................................................ 34 .
CAN Communication ............................................... 9 . ACTIVE TEST .................................................... 36 . M
CAN COMMUNICATION UNIT ............................ 9 . Self-Diagnostic Function ........................................ 38 .
Switch Operation ................................................... 10 . WITH CONSULT-II ............................................. 38 .
ICC System Display .............................................. 10 . WITHOUT CONSULT-II ...................................... 38 .
ACTION TEST ..........................................................11 . SELF-DIAGNOSIS BY ICC SYSTEM DISPLAY
ICC System Running Test ......................................11 . WILL NOT RUN .................................................. 40 .
VEHICLE-TO-VEHICLE DISTANCE CONTROL TROUBLE DIAGNOSIS FOR SELF-DIAGNOSTIC
MODE .................................................................11
. ITEMS ....................................................................... 43
.
CONVENTIONAL (FIXED SPEED) CRUISE Diagnostic Trouble Code (DTC) Chart .................. 43 .
CONTROL MODE .............................................. 12 . DTC 11 CONTROL UNIT ...................................... 44 .
LASER BEAM AIMING ADJUSTMENT .................. 14 . DTC 20 CAN COMM CIRCUIT .............................. 45 .
Outline ................................................................... 14
. DTC 31 POWER SUPPLY CIR, DTC 34 POWER
Preparation ............................................................ 14
. SUPPLY CIR 2 ...................................................... 45 .
Outline of Adjustment Procedure .......................... 14 . DTC 41 VHCL SPEED SE CIRC ........................... 46 .
Setting the ICC Target Board ................................ 14 . DTC 43 ABS/TCS/VDC CIRC ............................... 47 .
ADJUSTING HEIGHT OF THE TARGET ........... 14 . DTC 45 BRAKE SW/STOP L SW .......................... 47 .
DTC 46 OPERATION SW CIRC ............................ 49 .

Revision: 2005 November ACS-1 2006 Q45
DTC 61 PRESS SEN CIRCUIT ............................. 51 . Symptom 5: Chime Does Not Sound .....................71 .
DTC 62 BOOSTER SOL/V CIRCUIT ..................... 53 . Symptom 6: Chime Does Not Stop ........................75 .
DTC 63 RELEASE SW CIRCUIT .......................... 54 . Symptom 7: Driving Force Is Hunting ....................75 .
DTC 65 PRESSURE CONTROL ........................... 55 . Symptom 8: ICC System Frequently Cannot Detect
DTC 74 LASER BEAM OFF CNTR ....................... 56 . the Vehicle Ahead/ Detection Zone Is Short ..........75 .
DTC 90 STOP LAMP RLY FIX .............................. 56 . Symptom 9: The System Does Not Detect the Vehi-
DTC 92 ECM CIRCUIT .......................................... 62 . cle Ahead at All ......................................................76
.
DTC 96 NP RANGE .............................................. 63 . ELECTRICAL COMPONENT INSPECTION ............77 .
DTC 97 AT CIRCUIT ............................................. 65 . ICC Steering Switch ...............................................77 .
DTC 98 GEAR POSITION ..................................... 65 . Booster Solenoid ....................................................77.
DTC 102 RADAR STAIN ....................................... 66 . Release Switch ......................................................77.
DTC 103 LASER SENSOR FAIL ........................... 66 . ICC Brake Switch and Stop Lamp Switch ..............78 .
DTC 104 LASER AIMING INCMP ......................... 67 . ICC BRAKE HOLD RELAY ....................................78 .
DTC 107 LASER COMM FAIL ............................... 67 . REMOVAL AND INSTALLATION .............................79 .
DTC 109 LASER HIGH TEMP .............................. 67 . ICC Unit .................................................................79
.
TROUBLE DIAGNOSIS FOR SYMPTOMS ............. 68 . REMOVAL ...........................................................79.
Symptom Chart ...................................................... 68 . INSTALLATION ...................................................79 .
Symptom 1: MAIN Switch Does Not Turn ON* , 1 ICC Sensor ............................................................79
.
REMOVAL ...........................................................79.
MAIN Switch Does Not Turn OFF*2 ....................... 69 .
INSTALLATION ...................................................80 .
Symptom 2: ICC System Cannot Be Set (MAIN
ICC Warning Chime (Without LDW models) ..........80 .
Switch Turns ON/OFF) .......................................... 69 .
REMOVAL ...........................................................80.
Symptom 3: ICC System Cannot Be Operated by
INSTALLATION ...................................................80 .
CANCEL Switch, RESUME/ACCELERATE Switch
ICC Warning Chime (With LDW models) ...............80 .
or DISTANCE Switch ............................................. 70 .
REMOVAL AND INSTALLATION ........................80 .
Symptom 4: ICC System Is Not Cancelled When
ICC Steering Switch ...............................................80 .
the A/T Selector Lever Is in Other Than "D" and "M"
REMOVAL AND INSTALLATION ........................80 .
Position .................................................................. 71
.

Revision: 2005 November ACS-2 2006 Q45
AUTOMATIC SPEED CONTROL DEVICE (ASCD)
[ASCD]
AUTOMATIC SPEED CONTROL DEVICE (ASCD)
[ASCD] PFP:18930
A
Description NKS001JO

Regarding the information for ASCD system, refer to EC-29, "AUTOMATIC SPEED CONTROL DEVICE
(ASCD)" . B

ACS

Revision: 2005 November ACS-3 2006 Q45
PRECAUTIONS
[ICC]
PRECAUTIONS
[ICC] PFP:00001

Precautions for Supplemental Restraint System (SRS) "AIR BAG" and "SEAT
BELT PRE-TENSIONER" NKS001JP

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:
q 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.
q 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.
q 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 Service NKS001JQ

q Do not look straight into the laser beam discharger when adjusting laser beam aiming.
q Turn the MAIN switch OFF in conditions similar to driving, such as free rollers or a chassis dynamometer.
q Do not use the ICC sensor removing from vehicle, disassemble, or remodel the sensor.
q Erase DTC when replacing parts of ICC system, then check the operation of ICC system after adjusting
laser beam aiming if necessary.

Revision: 2005 November ACS-4 2006 Q45
PREPARATION
[ICC]
PREPARATION PFP:00002
A
Special Service Tools NKS001JS

The actual shapes of Kent-Moore tools may differ from those of special service tools illustrated here.
Tool number
B
(Kent-Moore No.) Description
Tool name
C

KV99110100
Uses for laser beam aiming
(J-45718)
adjustment
D
ICC target board

PKIA0358J
E

ACS

Revision: 2005 November ACS-5 2006 Q45
DESCRIPTION
[ICC]
DESCRIPTION PFP:00000

Outline NKS001JT

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 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 120 m (390 ft) 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.

Revision: 2005 November ACS-6 2006 Q45
DESCRIPTION
[ICC]
Functional Diagram NKS001JU

PKIC5178E I
Items of input/output signal to be checked with CONSULT-II
Data monitored
Input
Item [unit]
CAN Description J

THRTL OPENING Indicates throttle angle read by ICC unit through CAN communication (ECM transmits

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