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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 .................................... 13 . F
Aiming Adjustment ................................................. 14 .
AUTOMATIC SPEED CONTROL DEVICE (ASCD) 3 ..... CHECK AFTER THE ADJUSTMENT ................. 17 .
Description .............................................................. 3
. ELECTRICAL UNITS LOCATION ........................... 18 . G
Component Parts and Harness Connector Location 18 ...
ICC WIRING DIAGRAM .................................................. 19 .
Schematic .............................................................. 19
.
PRECAUTIONS ......................................................... 4 . H
Wiring Diagram -- ICC -- ..................................... 20 .
Precautions for Supplemental Restraint System TERMINALS AND REFERENCE VALUE ................ 27 .
(SRS) "AIR BAG" and "SEAT BELT PRE-TEN- Terminals and Reference Value for ICC Unit ......... 27 .
SIONER" ................................................................. 4
. Terminals and Reference Value for ICC Sensor .... 28 . I
Precautions for ICC System Service ....................... 4 . TROUBLE DIAGNOSIS -- GENERAL DESCRIP-
PREPARATION .......................................................... 5 . TION ......................................................................... 29
.
Special Service Tools .............................................. 5 . Work Flow .............................................................. 29
. J
DESCRIPTION ........................................................... 6. CONSULT-II Function ............................................ 30 .
Outline ..................................................................... 6
. DESCRIPTION ................................................... 30 .
VEHICLE-TO-VEHICLE DISTANCE CONTROL CONSULT-II BASIC OPERATION ...................... 30 .
MODE .................................................................. 6
. ACS
WORK SUPPORT .............................................. 31 .
CONVENTIONAL (FIXED SPEED) CRUISE SELF-DIAGNOSTIC RESULTS .......................... 32 .
CONTROL MODE ................................................ 6 . DATA MONITOR ................................................ 32 .
BRAKE ASSIST (WITH PREVIEW FUNCTION) 6 ..... ACTIVE TEST .................................................... 34 . L
System Diagram ...................................................... 6 . Self-Diagnostic Function ........................................ 36 .
Components Description ......................................... 7 . WITH CONSULT-II ............................................. 36 .
CAN Communication ............................................... 7 . WITHOUT CONSULT-II ...................................... 36 . M
CAN COMMUNICATION UNIT ............................ 7 . SELF-DIAGNOSIS BY ICC SYSTEM DISPLAY
Switch Operation ..................................................... 8. WILL NOT RUN .................................................. 38 .
ICC System Display ................................................ 8 . TROUBLE DIAGNOSIS FOR SELF-DIAGNOSTIC
ACTION TEST ........................................................... 9. ITEMS ....................................................................... 41
.
ICC System Running Test ....................................... 9 . Diagnostic Trouble Code (DTC) Chart .................. 41 .
VEHICLE-TO-VEHICLE DISTANCE CONTROL DTC 11 CONTROL UNIT ...................................... 42 .
MODE .................................................................. 9
. DTC 20 CAN COMM CIRCUIT .............................. 43 .
CONVENTIONAL (FIXED SPEED) CRUISE DTC 31 POWER SUPPLY CIR, DTC 34 POWER
CONTROL MODE .............................................. 10 . SUPPLY CIR 2 ...................................................... 43 .
LASER BEAM AIMING ADJUSTMENT .................. 12 . DTC 41 VHCL SPEED SE CIRC ........................... 44 .
Outline ................................................................... 12
. DTC 43 ABS/TCS/VDC CIRC ............................... 45 .
Preparation ............................................................ 12
. DTC 45 BRAKE SW/STOP L SW .......................... 45 .
Outline of Adjustment Procedure .......................... 12 . DTC 46 OPERATION SW CIRC ............................ 47 .
Setting the ICC Target Board ................................ 12 . DTC 61 PRESS SEN CIRCUIT ............................. 48 .
ADJUSTING HEIGHT OF THE TARGET ........... 12 . DTC 62 BOOSTER SOL/V CIRCUIT .................... 50 .
ADJUSTING THE RIGHT-LEFT POSITION OF DTC 63 RELEASE SW CIRCUIT .......................... 51 .
THE TARGET ..................................................... 13 .

Revision: 2005 July ACS-1 2005 FX
DTC 65 PRESSURE CONTROL ........................... 52 . Symptom 4: ICC System Is Not Cancelled When
DTC 74 LASER BEAM OFF CNTR ....................... 53 . the Gear Is in Other Than "D" ................................68 .
DTC 90 STOP LAMP RLY FIX .............................. 53 . Symptom 5: Chime Does Not Sound .....................68 .
DTC 92 ECM CIRCUIT .......................................... 59 . Symptom 6: Driving Force Is Hunting ....................69 .
DTC 96 NP RANGE .............................................. 60. Symptom 7: ICC System Frequently Cannot Detect
DTC 97 AT CIRCUIT ............................................. 61
. the Vehicle Ahead/ Detection Zone Is Short ..........69 .
DTC 98 GEAR POSITION ..................................... 61 . Symptom 8: The System Does Not Detect the Vehi-
DTC 102 RADAR STAIN ....................................... 62 . cle Ahead at All ......................................................70
.
DTC 103 LASER SENSOR FAIL ........................... 63 . ELECTRICAL COMPONENT INSPECTION ............71 .
DTC 104 LASER AIMING INCMP ......................... 63 . ICC Steering Switch ...............................................71 .
DTC 107 LASER COMM FAIL ............................... 63 . ICC Brake Switch and Stop Lamp Switch ..............71 .
DTC 109 LASER HIGH TEMP .............................. 64 . Boost Solenoid .......................................................71
.
TROUBLE DIAGNOSIS FOR SYMPTOMS ............. 65 . Release Switch ......................................................72.
Symptom Chart ...................................................... 65
. REMOVAL AND INSTALLATION .............................73 .
Symptom 1: MAIN Switch Does Not Turn ON* , 1 ICC Unit .................................................................73
.
REMOVAL ...........................................................73.
MAIN Switch Does Not Turn OFF*2 ....................... 66 .
INSTALLATION ...................................................73 .
Symptom 2: ICC System Cannot Be Set (MAIN
ICC Sensor ............................................................73
.
Switch Turns ON/OFF) .......................................... 66
.
REMOVAL ...........................................................73.
Symptom 3: ICC System Cannot Be Operated by
INSTALLATION ...................................................74 .
CANCEL Switch, RESUME/ACCELERATE Switch
ICC Steering Switch ...............................................74 .
or DISTANCE Switch ............................................. 67
.

Revision: 2005 July ACS-2 2005 FX
AUTOMATIC SPEED CONTROL DEVICE (ASCD)
[ASCD]
AUTOMATIC SPEED CONTROL DEVICE (ASCD)
[ASCD] PFP:18930
A
Description AKS007XN

Regarding the information for ASCD system, refer to EC-36, "AUTOMATIC SPEED CONTROL DEVICE
(ASCD)" (VQ35DE), EC-727, "AUTOMATIC SPEED CONTROL DEVICE (ASCD)" (VK45DE). B

ACS

Revision: 2005 July ACS-3 2005 FX
PRECAUTIONS
[ICC]
PRECAUTIONS
[ICC] PFP: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:
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 AKS00C88

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 like Free rollers or a chassis dynamome-
ter.
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 July ACS-4 2005 FX
PREPARATION
[ICC]
PREPARATION PFP:00002
A
Special Service Tools AKS00C8A

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
(J-45718) Laser beam aiming adjustment D
ICC target board

PKIA0358J
E

ACS

Revision: 2005 July ACS-5 2005 FX
DESCRIPTION
[ICC]
DESCRIPTION PFP:00000

Outline AKS00C8B

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 Diagram AKS00C8C

PKIB4142E

Revision: 2005 July ACS-6 2005 FX
DESCRIPTION
[ICC]
Components Description AKS00C8D

A
Vehicle-to- Conventional Brake assist
vehicle (fixed speed) (with pre-
Component Description
distance cruise view func-
control mode control mode tion) B
Operates electric throttle control actuator and brake
ICC unit

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