Infiniti M45 (Y34). Manual - part 2

 

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Infiniti M45 (Y34). Manual - part 2

 

 

ACS-1

AUTO CRUISE CONTROL SYSTEM

K  ELECTRICAL

CONTENTS

C

D

E

F

G

H

I

J

L

M

SECTION 

ACS

A

B

ACS

AUTO CRUISE CONTROL SYSTEM

ASCD

PRECAUTIONS .......................................................... 3

Precautions for Supplemental Restraint System 
(SRS) “AIR BAG” and “SEAT BELT PRE-TEN-
SIONER” .................................................................. 3
Wiring Diagrams and Trouble Diagnosis .................. 3

AUTOMATIC SPEED CONTROL DEVICE (ASCD) 

..... 4

Component Parts and Harness Connector Location 

..... 4

System Description  .................................................. 4

POWER SUPPLY AND GROUND  ........................ 4
OPERATION ......................................................... 5
ASCD PUMP OPERATION  ................................... 6

Schematic ................................................................ 7
Wiring Diagram — ASCD —  .................................... 8

FIG. 1 ..................................................................... 8
FIG. 2 ..................................................................... 9
FIG. 3 ................................................................... 10
FIG. 4 ....................................................................11
FIG. 5 ................................................................... 12
FIG. 6 ................................................................... 13

Fail-Safe System  .................................................... 14

DESCRIPTION .................................................... 14
MALFUNCTION DETECTION CONDITIONS ..... 14

CONSULT-II Inspection Procedure  ........................ 14
CONSULT-II Self-Diagnostic Results  ..................... 15
CONSULT-II Data Monitor ...................................... 16
Trouble Diagnoses  ................................................. 17

SYMPTOM CHART ............................................. 17
FAIL-SAFE SYSTEM CHECK ............................. 18
POWER SUPPLY AND GROUND CIRCUIT 
CHECK ................................................................ 19
ASCD BRAKE/STOP LAMP SWITCH CHECK ... 20
ASCD STEERING SWITCH CHECK  .................. 22
VEHICLE SPEED SENSOR CHECK .................. 24
ASCD PUMP CIRCUIT CHECK .......................... 25
ASCD ACTUATOR/PUMP CHECK ..................... 27
ECM SIGNAL CHECK  ........................................ 28
TCS MONITOR CHECK  ..................................... 29

Electrical Component Inspection ............................ 30

ASCD BRAKE SWITCH AND STOP LAMP 

SWITCH .............................................................. 30
PARK/NEUTRAL POSITION RELAY  .................. 30

ASCD Wire Adjustment  .......................................... 30

SERVICE DATA AND SPECIFICATIONS (SDS)  ...... 31

Standard and Limit .................................................. 31
Tightening Torque  ................................................... 31

ICC

PRECAUTIONS ........................................................ 32

Precautions for Supplemental Restraint System 
(SRS) “AIR BAG” and “SEAT BELT PRE-TEN-
SIONER” ................................................................. 32
Precautions for ICC System Service  ...................... 32
Wiring Diagrams and Trouble Diagnosis  ................ 32

PREPARATION ......................................................... 33

Special Service Tools  ............................................. 33

DESCRIPTION .......................................................... 34

Outline .................................................................... 34

VEHICLE-TO-VEHICLE DISTANCE CONTROL 
MODE .................................................................. 34
CONVENTIONAL (FIXED SPEED) CRUISE 
CONTROL MODE  ............................................... 34
BRAKE ASSIST (WITH PREVIEW FUNCTION) ... 34

System Diagram  ..................................................... 34
Components Description  ........................................ 35
CAN Communication  .............................................. 35

CAN COMMUNICATION UNIT ............................ 35

Switch Operation  .................................................... 35
ICC System Display ................................................ 36

ACTION TEST ........................................................... 37

ICC System Running Test  ...................................... 37

VEHICLE-TO-VEHICLE DISTANCE CONTROL 
MODE .................................................................. 37
CONVENTIONAL (FIXED SPEED) CRUISE 
CONTROL MODE  ............................................... 38

LASER BEAM AIMING ADJUSTMENT  ................... 40

Outline .................................................................... 40
Preparation ............................................................. 40
Outline of Adjustment Procedure ............................ 40

ACS-2

Setting the ICC Target Board .................................. 40

ADJUSTING HEIGHT OF THE TARGET  ............ 40
ADJUSTING THE RIGHT-LEFT POSITION OF 
THE TARGET  ...................................................... 41
SETTING THE TARGET  ..................................... 41

Aiming Adjustment .................................................. 42

CHECK AFTER THE ADJUSTMENT  .................. 45

ELECTRICAL UNITS LOCATION ............................. 46

Component Parts and Harness Connector Location ... 46

WIRING DIAGRAM  ................................................... 47

Schematic ............................................................... 47
Wiring Diagram — ICC —  ...................................... 48

TERMINALS AND REFERENCE VALUE  ................. 55

Terminals and Reference Value for ICC Unit  .......... 55
Terminals and Reference Value for ICC Radar Sen-
sor ........................................................................... 57
Terminals and Reference Value for ICC Warning 
Chime ..................................................................... 57

TROUBLE DIAGNOSIS — GENERAL DESCRIP-
TION .......................................................................... 58

Work Flow ............................................................... 58
CONSULT-II Function  ............................................. 59

DESCRIPTION .................................................... 59
WORK SUPPORT  ............................................... 59
SELF-DIAGNOSTIC RESULTS ........................... 60
DATA MONITOR .................................................. 60
ACTIVE TEST  ..................................................... 62

Self-Diagnostic Function ......................................... 63

WITH CONSULT-II  .............................................. 63
WITHOUT CONSULT-II  ....................................... 64
SELF-DIAGNOSIS BY CONSULT-II WILL NOT 
RUN ..................................................................... 65
SELF-DIAGNOSIS BY ICC SYSTEM DISPLAY 
WILL NOT RUN  ................................................... 66

TROUBLE DIAGNOSIS FOR SELF-DIAGNOSTIC 
ITEMS ........................................................................ 68

Diagnostic Trouble Code (DTC) Chart .................... 68
DTC 11 CONTROL UNIT ........................................ 70
DTC 20 CAN COMM CIRCUIT ............................... 70
DTC 31 POWER SUPPLY CIR, DTC 34 POWER 
SUPPLY CIR 2 ........................................................ 70
DTC 41 VHCL SPEED SE CIRC  ............................ 71
DTC 42 THRTL POS SEN CIRC  ............................ 72
DTC 43 ABS/TCS/VDC CIRC  ................................ 73
DTC 45 BRAKE SW/STOP L SW ........................... 73
DTC 46 OPERATION SW CIRC ............................. 75
DTC 61 PRESS SEN CIRCUIT  .............................. 77
DTC 62 BOOSTER SOL/V CIRCUIT ...................... 77
DTC 63 RELEASE SW CIRCUIT  ........................... 78
DTC 65 PRESSURE CONTROL  ............................ 79
DTC 74 LASER BEAM OFF CNTR  ........................ 80
DTC 81 POWER SUPPLY VALVE [HI VOLTAGE] ... 80

DTC 83 VACUUM PUMP [LOW VOLTAGE]  ...........81
DTC 85 AIR VALVE [LOW VOLTAGE]  ....................82
DTC 87 RELEASE VALVE [LOW VOLTAGE]  .........82
DTC 90 STOP LAMP RLY FIX ................................83
DTC 92 ECM CIRCUIT  ...........................................88
DTC 97 AT CIRCUIT ...............................................88
DTC 98 GEAR POSITION  ......................................88
DTC 102 RADAR STAIN .........................................89
DTC 103 LASER SENSOR FAIL  ............................90
DTC 104 LASER AIMING INCMP  ..........................90
DTC 107 LASER COMM FAIL  ................................90
DTC 109 LASER HIGH TEMP ................................91

TROUBLE DIAGNOSIS FOR SYMPTOMS  ..............92

Symptom Chart  .......................................................92
Symptom 1: Cruise ON/OFF Does Not Switch ON. 
(The ICC System Display in the Combination Meter 
Does Not Illuminate.) Cruise ON/OFF Does Not 
Switch OFF. (The ICC System Display in the Com-
bination Meter Remains Powered.) .........................93
Symptom 2: The ICC System Cannot Be Set (ON/
OFF Switch Turns On/Off).  .....................................95
Symptom 3: The ICC System Cannot Be Cancelled 
by the CANCEL Switch, RESUME or Increase the 
Set Vehicle Speed, or Change the Distance Setting. ...96
Symptom 4: The ICC System Is Not Cancelled 
When the Gear Is in Other Than `D'.  ......................97
Symptom 5: Chime Does Not Sound.  .....................97
Symptom 6: Chime Does Not Stop.  ........................99
Symptom 7: Driving Force Is Hunting.  ....................99
Symptom 8: The ICC System Frequently Cannot 
Detect the Vehicle Ahead/The Detection Zone Is 
Short. ......................................................................99
Symptom 9: The System Does Not Detect the Vehi-
cle Ahead at All.  ....................................................100

ELECTRICAL COMPONENT INSPECTION  ...........101

ICC Steering Switch  ..............................................101
ICC Brake Switch and Stop Lamp Switch  .............101
Booster Solenoid ...................................................101
Release Switch  .....................................................102
ASCD Actuator ......................................................102
Vacuum Hose ........................................................102
ASCD Pump ..........................................................102

REMOVAL AND INSTALLATION ............................104

ICC Unit  ................................................................104
ICC Sensor  ...........................................................104
ICC Warning Chime  ..............................................105
ICC Steering Switch  ..............................................105
ASCD Wire Adjustment .........................................105

SERVICE DATA AND SPECIFICATIONS (SDS)  ....107

Standard and Limit  ................................................107
Tightening Torque  .................................................107

PRECAUTIONS

ACS-3

[ASCD]

C

D

E

F

G

H

I

J

L

M

A

B

ACS

[ASCD]

PRECAUTIONS

PFP:00001

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

AKS004EO

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.

Wiring Diagrams and Trouble Diagnosis

AKS002VF

When you read wiring diagrams, refer to the followings:

Refer to 

GI-14, "How to Read Wiring Diagrams"

  in GI section

Refer to 

PG-2, "POWER SUPPLY ROUTING"

  for power distribution circuit in PG section

When you perform trouble diagnosis, refer to the followings:

Refer to 

GI-10, "HOW TO FOLLOW TEST GROUPS IN TROUBLE DIAGNOSES"

  in GI section

Refer to 

GI-26, "How to Perform Efficient Diagnosis for an Electrical Incident"

  in GI section

ACS-4

[ASCD]

AUTOMATIC SPEED CONTROL DEVICE (ASCD)

AUTOMATIC SPEED CONTROL DEVICE (ASCD)

PFP:18930

Component Parts and Harness Connector Location

AKS002PB

System Description

AKS002PC

Refer to Owner's Manual for ASCD operating instructions.

POWER SUPPLY AND GROUND

When ignition switch is in the ON or START position, power is supplied:

through 10A fuse [No. 12, located in the fuse block (J/B) NO.1]

to ASCD control unit terminal 5 and

through ASCD brake switch terminal 1and 2.

to park/neutral position relay terminal 3.

through 10A fuse [No. 9, located in the fuse block (J/B) NO.1]

SKIA3059E

 

 

 

 

 

 

 

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