Infiniti M35/M45 Y50. Manual - part 2

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AUTO CRUISE CONTROL SYSTEM

K  ELECTRICAL

CONTENTS

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SECTION 

ACS

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ACS

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 ............................................... 13

LASER 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-2

PLY CIR 2  ............................................................... 42
DTC 3 VHCL SPEED SE CIRC  .............................. 43
DTC 4 ABS/TCS/VDC CIRC  .................................. 43
DTC 5 BRAKE SW/STOP L SW ............................. 44
DTC 6 OPERATION SW CIRC ............................... 48
DTC 12 LASER BEAM OFFCNTR  ......................... 49
DTC 13 STOP LAMP RLY FIX  ............................... 50
DTC 14 ECM CIRCUIT ........................................... 56
DTC 15 GEAR POSITION  ...................................... 57
DTC 16 RADAR STAIN  .......................................... 58
DTC 18 LASER AIMING INCMP  ............................ 58
DTC 21 UNIT HIGH TEMP  ..................................... 58
DTC 24 NP RANGE  ............................................... 59
DTC 25 SHIFT RANGE IND  ................................... 59
DTC 26 ECD MODE MALF  .................................... 60
DTC 27 ECD PWR SUPLY CIR .............................. 60
DTC 100 CAN COMM CIRCUIT ............................. 61
DTC 110 CONTROL UNIT (CAN) ........................... 61

TROUBLE DIAGNOSIS FOR SYMPTOMS  .............. 62

Symptom Chart ....................................................... 62

Symptom 1: MAIN Switch Does Not Turn ON*

1

 , 

MAIN Switch Does Not Turn OFF*

2

 ........................ 63

Symptom 2: ICC System Cannot Be Set (MAIN 
Switch Turns ON/OFF) ............................................64
Symptom 3: ICC System Cannot Be Operated by 
CANCEL Switch, RESUME/ACCELERATE Switch 
or DISTANCE Switch  ..............................................65
Symptom 4: ICC System Is Not Cancelled When 
the A/T Selector Lever Is In Other Than “D” and “M” ...65
Symptom 5: Chime Does Not Sound  ......................66
Symptom 6: Driving Force Is Hunting  .....................67
Symptom 7: ICC System Frequently Cannot Detect 
the Vehicle Ahead/ Detection Zone Is Short  ...........67
Symptom 8: The System Does Not Detect the Vehi-
cle Ahead at All  .......................................................68

ELECTRICAL COMPONENT INSPECTION  .............69

ICC Steering Switch  ................................................69
ICC Brake Hold Relay .............................................69
ICC Brake Switch and Stop Lamp Switch  ...............69

REMOVAL AND INSTALLATION ..............................70

ICC Sensor Integrated Unit  .....................................70

REMOVAL ............................................................70
INSTALLATION ....................................................70

ICC Steering Switch  ................................................70

AUTOMATIC SPEED CONTROL DEVICE (ASCD)

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[ASCD]

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ACS

[ASCD]

AUTOMATIC SPEED CONTROL DEVICE (ASCD)

PFP:18930

Description

NKS004CB

Regarding the information for ASCD system, refer to 

EC-36, "AUTOMATIC SPEED CONTROL DEVICE

(ASCD)"

  (VQ35DE), 

EC-738, "AUTOMATIC SPEED CONTROL DEVICE (ASCD)"

  (VK45DE).

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[ICC]

PRECAUTIONS

[ICC]

PRECAUTIONS

PFP:00001

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

NKS004CC

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:

●

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.

●

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.

●

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

NKS004CD

●

Do not look straight into the laser beam discharger when adjusting laser beam aiming.

●

Turn the MAIN switch OFF in conditions similar to driving, such as free rollers or a chassis dynamometer.

●

Do not use the ICC sensor integrated unit removing from vehicle. Never disassemble and remodel.

●

Erase DTC when replacing parts of ICC system, then check the operation of ICC system after adjusting
laser beam aiming if necessary.