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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 ................. 16 .
Description .............................................................. 3
. ELECTRICAL UNITS LOCATION ........................... 17 . G
Component Parts and Harness Connector Location 17 ...
ICC WIRING DIAGRAM .................................................. 18 .
Schematic .............................................................. 18
.
PRECAUTIONS ......................................................... 4 . H
Wiring Diagram -- ICC -- ..................................... 19 .
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 . Terminals and Reference Value for ICC Warning
Wiring Diagrams and Trouble Diagnosis ................. 4 . Chime .................................................................... 29
.
PREPARATION .......................................................... 5 . TROUBLE DIAGNOSIS -- GENERAL DESCRIP- J
Special Service Tools .............................................. 5 . TION ......................................................................... 30
.
DESCRIPTION ........................................................... 6. Work Flow .............................................................. 30
.
Outline ..................................................................... 6
. CONSULT-II Function ............................................ 31 .
VEHICLE-TO-VEHICLE DISTANCE CONTROL ACS
DESCRIPTION ................................................... 31 .
MODE .................................................................. 6
. CONSULT-II BASIC OPERATION ...................... 31 .
CONVENTIONAL (FIXED SPEED) CRUISE WORK SUPPORT .............................................. 32 .
CONTROL MODE ................................................ 6 . SELF-DIAGNOSTIC RESULTS .......................... 32 . L
BRAKE ASSIST (WITH PREVIEW FUNCTION) 6 ..... DATA MONITOR ................................................ 33 .
System Diagram ...................................................... 6 . ACTIVE TEST .................................................... 34 .
Components Description ......................................... 7 . Self-Diagnostic Function ........................................ 37 . M
CAN Communication ............................................... 7 . WITH CONSULT-II ............................................. 37 .
CAN COMMUNICATION UNIT ............................ 7 . WITHOUT CONSULT-II ...................................... 37 .
Switch Operation ..................................................... 8. SELF-DIAGNOSIS BY ICC SYSTEM DISPLAY
ICC System Display ................................................ 8 . WILL NOT RUN .................................................. 39 .
ACTION TEST ........................................................... 9. TROUBLE DIAGNOSIS FOR SELF-DIAGNOSTIC
ICC System Running Test ....................................... 9 . ITEMS ....................................................................... 42
.
VEHICLE-TO-VEHICLE DISTANCE CONTROL Diagnostic Trouble Code (DTC) Chart .................. 42 .
MODE .................................................................. 9
. DTC 11 CONTROL UNIT ...................................... 43 .
CONVENTIONAL (FIXED SPEED) CRUISE DTC 20 CAN COMM CIRCUIT .............................. 44 .
CONTROL MODE .............................................. 10 . DTC 31 POWER SUPPLY CIR, DTC 34 POWER
LASER BEAM AIMING ADJUSTMENT .................. 12 . SUPPLY CIR 2 ...................................................... 44 .
Outline ................................................................... 12
. DTC 41 VHCL SPEED SE CIRC ........................... 45 .
Preparation ............................................................ 12
. DTC 43 ABS/TCS/VDC CIRC ............................... 46 .
Outline of Adjustment Procedure .......................... 12 . DTC 45 BRAKE SW/STOP L SW .......................... 46 .
Setting the ICC Target Board ................................ 12 . DTC 46 OPERATION SW CIRC ............................ 48 .
ADJUSTING HEIGHT OF THE TARGET ........... 12 . DTC 61 PRESS SEN CIRCUIT ............................. 50 .

Edition; 2004 May ACS-1 2005 Q45
DTC 62 BOOSTER SOL/V CIRCUIT ..................... 52 . Symptom 5: Chime Does Not Sound .....................70 .
DTC 63 RELEASE SW CIRCUIT .......................... 53 . Symptom 6: Chime Does Not Stop ........................72 .
DTC 65 PRESSURE CONTROL ........................... 54 . Symptom 7: Driving Force Is Hunting ....................73 .
DTC 74 LASER BEAM OFF CNTR ....................... 55 . Symptom 8: ICC System Frequently Cannot Detect
DTC 90 STOP LAMP RLY FIX .............................. 55 . the Vehicle Ahead/ Detection Zone Is Short ..........73 .
DTC 92 ECM CIRCUIT .......................................... 61 . Symptom 9: The System Does Not Detect the Vehi-
DTC 96 NP RANGE .............................................. 62. cle Ahead at All ......................................................73
.
DTC 97 AT CIRCUIT ............................................. 63
. ELECTRICAL COMPONENT INSPECTION ............75 .
DTC 98 GEAR POSITION ..................................... 63 . ICC Steering Switch ...............................................75 .
DTC 102 RADAR STAIN ....................................... 64 . ICC Brake Switch and Stop Lamp Switch ..............75 .
DTC 103 LASER SENSOR FAIL ........................... 65 . Boost Solenoid .......................................................75
.
DTC 104 LASER AIMING INCMP ......................... 65 . Release Switch ......................................................76.
DTC 107 LASER COMM FAIL ............................... 65 . REMOVAL AND INSTALLATION .............................77 .
DTC 109 LASER HIGH TEMP .............................. 66 . ICC Unit .................................................................77
.
TROUBLE DIAGNOSIS FOR SYMPTOMS ............. 67 . REMOVAL ...........................................................77.
Symptom Chart ...................................................... 67
. INSTALLATION ...................................................77 .
Symptom 1: MAIN Switch Does Not Turn ON* , 1 ICC Sensor ............................................................77
.
REMOVAL ...........................................................77.
MAIN Switch Does Not Turn OFF*2 ....................... 68 .
INSTALLATION ...................................................78 .
Symptom 2: ICC System Cannot Be Set (MAIN
ICC Warning Chime ...............................................78 .
Switch Turns ON/OFF) .......................................... 68
.
REMOVAL ...........................................................78.
Symptom 3: ICC System Cannot Be Operated by
INSTALLATION ...................................................78 .
CANCEL Switch, RESUME/ACCELERATE Switch
ICC Steering Switch ...............................................78 .
or DISTANCE Switch ............................................. 69
.
REMOVAL AND INSTALLATION ........................78 .
Symptom 4: ICC System Is Not Cancelled When
the Gear Is in Other Than `D' ................................. 70
.

Edition; 2004 May ACS-2 2005 Q45
AUTOMATIC SPEED CONTROL DEVICE (ASCD)
[ASCD]
AUTOMATIC SPEED CONTROL DEVICE (ASCD)
[ASCD] PFP:18930
A
Description EKS00H28

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

ACS

Edition; 2004 May ACS-3 2005 Q45
PRECAUTIONS
[ICC]
PRECAUTIONS
[ICC] PFP:00001

Precautions for Supplemental Restraint System (SRS) "AIR BAG" and "SEAT
BELT PRE-TENSIONER" EKS00IVX

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 EKS003S3

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, suchlike 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.
Wiring Diagrams and Trouble Diagnosis EKS003S4

When reading wiring diagrams, refer to the following:
q GI-14, "How to Read Wiring Diagrams" in GI section
q PG-2, "POWER SUPPLY ROUTING" for power distribution circuit in PG section
When performing trouble diagnosis, refer to the following:
q GI-10, "HOW TO FOLLOW TEST GROUPS IN TROUBLE DIAGNOSES" in GI section
q GI-26, "How to Perform Efficient Diagnosis for an Electrical Incident" in GI section

Edition; 2004 May ACS-4 2005 Q45
PREPARATION
[ICC]
PREPARATION PFP:00002
A
Special Service Tools EKS003ON

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

Edition; 2004 May ACS-5 2005 Q45
DESCRIPTION
[ICC]
DESCRIPTION PFP:00000

Outline EKS00GFA

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 EKS00GFB

PKIA9661E

Edition; 2004 May ACS-6 2005 Q45
DESCRIPTION
[ICC]
Components Description EKS00GFC

A
Con-
Vehi-
ven-
cle-to- Brake
tional
vehi- assist
(fixed B
cle dis- (with
Component speed) Description
tance pre-
cruise
con- view
con-
trol brake) C
trol
mode
mode
Operates electric throttle control actuator and brake booster based on that
ICC unit

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