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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 ICC Target Board ................................. 20 . F
ADJUSTING HEIGHT OF THE TARGET ........... 20 .
AUTOMATIC SPEED CONTROL DEVICE (ASCD) 3 ..... ADJUSTING THE RIGHT-LEFT POSITION OF
Description .............................................................. 3
. THE TARGET ..................................................... 21 . G
SETTING THE TARGET .................................... 21 .
ICC Aiming Adjustment ................................................. 22 .
CHECK AFTER THE ADJUSTMENT ................. 25 .
PRECAUTIONS ......................................................... 4 . H
ELECTRICAL UNITS LOCATION ........................... 26 .
Precautions for Supplemental Restraint System Component Parts and Harness Connector Location 26 ...
(SRS) "AIR BAG" and "SEAT BELT PRE-TEN- WIRING DIAGRAM .................................................. 27 .
SIONER" ................................................................. 4
. Schematic .............................................................. 27
. I
Precautions for ICC System Service ....................... 4 . Wiring Diagram -- ICC -- ..................................... 28 .
Wiring Diagrams and Trouble Diagnosis ................. 4 . TERMINALS AND REFERENCE VALUE ................ 35 .
PREPARATION .......................................................... 5 . Terminals and Reference Value for ICC Unit ......... 35 . J
Special Service Tools .............................................. 5 . Terminals and Reference Value for ICC Sensor .... 36 .
DESCRIPTION ........................................................... 6. TROUBLE DIAGNOSIS -- GENERAL DESCRIP-
Outline ..................................................................... 6
. TION ......................................................................... 37
.
VEHICLE-TO-VEHICLE DISTANCE CONTROL ACS
Work Flow .............................................................. 37
.
MODE .................................................................. 6
. CONSULT-II Function ............................................ 38 .
CONVENTIONAL (FIXED SPEED) CRUISE DESCRIPTION ................................................... 38 .
CONTROL MODE ................................................ 6 . CONSULT-II INSPECTION PROCEDURE ......... 38 . L
BRAKE ASSIST (WITH PREVIEW FUNCTION) 6 ..... WORK SUPPORT .............................................. 39 .
System Diagram ...................................................... 6 . SELF-DIAGNOSTIC RESULTS .......................... 39 .
Components Description ......................................... 7 . DATA MONITOR ................................................ 40 . M
CAN Communication ............................................... 7 . ACTIVE TEST .................................................... 41 .
CAN COMMUNICATION UNIT FOR 2WD Self-Diagnostic Function ........................................ 43 .
MODEL ................................................................ 7
. WITH CONSULT-II ............................................. 43 .
CAN COMMUNICATION UNIT FOR AWD MOD- WITHOUT CONSULT-II ...................................... 43 .
ELS .....................................................................11
. SELF-DIAGNOSIS BY ICC SYSTEM DISPLAY
Switch Operation ................................................... 16 . WILL NOT RUN. ................................................. 44 .
ICC System Display .............................................. 16 . TROUBLE DIAGNOSIS FOR SELF-DIAGNOSTIC
ACTION TEST ......................................................... 17 . ITEMS ....................................................................... 47
.
ICC System Running Test ..................................... 17 . Diagnostic Trouble Code (DTC) Chart .................. 47 .
VEHICLE-TO-VEHICLE DISTANCE CONTROL DTC 11 CONTROL UNIT ...................................... 48 .
MODE ................................................................ 17
. DTC 20 CAN COMM CIRCUIT .............................. 48 .
CONVENTIONAL (FIXED SPEED) CRUISE DTC 31 POWER SUPPLY CIR 1, DTC 34 POWER
CONTROL MODE .............................................. 18 . SUPPLY CIR 2 ...................................................... 49 .
LASER BEAM AIMING ADJUSTMENT .................. 20 . DTC 41 VHCL SPEED SE CIRC ........................... 49 .
Outline ................................................................... 20
. DTC 43 VDC/TCS/ABS CIRC ............................... 50 .
Preparation ............................................................ 20
. DTC 45 BRAKE SW/STOP L SW .......................... 50 .
Outline of Adjustment Procedure .......................... 20 .

Revision; 2004 April ACS-1 2003 FX
DTC 46 OPERATION SW CIRC ............................ 52 . Symptom 3: The ICC System Cannot Be Operated
DTC 61 PRESS SEN CIRCUIT ............................. 53 . by the CANCEL Switch, ACCEL/RES Switch, or
DTC 62 BOOSTER SOL/V CIRCUIT ..................... 54 . DISTANCE Switch.. ...............................................68 .
DTC 63 RELEASE SW CIRCUIT .......................... 55 . Symptom 4: The ICC System Is Not Cancelled
DTC 65 PRESSURE CONTROL ........................... 56 . When the Gear Is in Other Than `D' .......................69 .
DTC 74 LASER BEAM OFF CNTR ....................... 56 . Symptom 5: Chime Does Not Sound .....................69 .
DTC 90 STOP LAMP RLY FIX .............................. 57 . Symptom 6: Driving Force Is Hunting ....................70 .
DTC 92 ECM CIRCUIT .......................................... 61 . Symptom 7: The ICC System Frequently Cannot
DTC 96 NP RANGE .............................................. 62. Detect the Vehicle Ahead/The Detection Zone Is
DTC 97 AT CIRCUIT ............................................. 63
. Short ......................................................................70
.
DTC 98 GEAR POSITION ..................................... 63 . Symptom 8: The System Does Not Detect the Vehi-
DTC 102 RADAR STAIN ....................................... 64 . cle Ahead at All ......................................................70.
DTC 103 LASER SENSOR FAIL ........................... 65 . ELECTRICAL COMPONENT INSPECTION ............72 .
DTC 104 LASER AIMING INCMP ......................... 65 . ICC Steering Switch ...............................................72 .
DTC 107 LASER COMM FAIL ............................... 65 . ICC Brake Switch and Stop Lamp Switch ..............72 .
DTC 109 LASER HIGH TEMP .............................. 65 . Booster Solenoid ....................................................72 .
TROUBLE DIAGNOSIS FOR SYMPTOMS ............. 66 . Release Switch ......................................................73 .
Symptom Chart ...................................................... 66
. REMOVAL AND INSTALLATION .............................74 .
Symptom 1: ON/OFF Switch Does Not Switch ON* 1 ICC Unit .................................................................74
.
ICC Sensor ............................................................74.
, ON/OFF Switch Does Not Switch OFF*2 ............. 67 .
ICC Steering Switch ...............................................74 .
Symptom 2: The ICC System Cannot Be Set (ON/
OFF Switch Turns On/Off). .................................... 67.

Revision; 2004 April ACS-2 2003 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-657, "AUTOMATIC SPEED CONTROL DEVICE
(ASCD)" (VQ35DE), EC-1329, "AUTOMATIC SPEED CONTROL DEVICE (ASCD)" (VK45DE). B

ACS

Revision; 2004 April ACS-3 2003 FX
PRECAUTIONS
[ICC]
PRECAUTIONS
[ICC] PFP:00001

Precautions for Supplemental Restraint System (SRS) "AIR BAG" and "SEAT
BELT PRE-TENSIONER" AKS007IE

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 AKS006Y8

q Do not look straight into the laser beam discharger when adjusting laser beam aiming.
q Turn the ON/OFF switch OFF in conditions similar to driving, suchlike Free rollers or 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.
Wiring Diagrams and Trouble Diagnosis AKS006Y9

When you read wiring diagrams, refer to the followings:
q Refer to GI-15, "How to Read Wiring Diagrams" in GI section
q Refer to PG-3, "POWER SUPPLY ROUTING CIRCUIT" for power distribution circuit in PG section
When you perform trouble diagnosis, refer to the followings:
q Refer to GI-11, "HOW TO FOLLOW TEST GROUPS IN TROUBLE DIAGNOSES" in GI section
q Refer to GI-27, "How to Perform Efficient Diagnosis for an Electrical Incident" in GI section

Revision; 2004 April ACS-4 2003 FX
PREPARATION
[ICC]
PREPARATION PFP:00002
A
Special Service Tools AKS006YA

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; 2004 April ACS-5 2003 FX
DESCRIPTION
[ICC]
DESCRIPTION PFP:00000

Outline AKS006YB

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 same speed as other vehicles can be maintained without the
constant need to adjust the operating speed as with a normal cruise control system.
The system is intended to enhance the operation of the vehicle when following another vehicle 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.
CONVENTIONAL (FIXED SPEED) CRUISE CONTROL MODE
Conventional (fixed speed) cruise control mode is cruising at preset speeds.
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 Intelligent Cruise Control System operating instructions.
System Diagram AKS006YC

SKIA5972E

Revision; 2004 April ACS-6 2003 FX
DESCRIPTION
[ICC]
Components Description AKS006YD

A
Conven-
Vehicle-
tional Brake
to-vehi-
(fixed assist
cle dis-
Component speed) (with Description B
tance
cruise preview
control
control brake)
mode
mode
C
Operates throttle control actuator and brake booster based on that sen-
ICC unit

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