steering INFINITI M35 2006 Factory Service Manual

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QUICK REFERENCE INDEX
AGENERAL INFORMATIONGIGeneral Information
BENGINEEMEngine Mechanical
LUEngine Lubrication System
COEngine Cooling System
ECEngine Control System
FLFuel System
EXExhaust System
ACCAccelerator Control System
CTRANSMISSION/
TRANSAXLEATAutomatic Transmission
DDRIVELINE/AXLETFTransfer
PRPropeller Shaft
FFDFront Final Drive
RFDRear Final Drive
FAXFront Axle
RAXRear Axle
ESUSPENSIONFSUFront Suspension
RSURear Suspension
WTRoad Wheels & Tires
FBRAKESBRBrake System
PBParking Brake System
BRCBrake Control System
GSTEERINGPSPower Steering System
STCSteering Control System
HRESTRAINTSSBSeat Belts
SRSSupplemental Restraint System
(SRS)
IBODYBLBody, Lock & Security System
GWGlasses, Window System & Mir-
rors
RFRoof
EIExterior & Interior
IPInstrument Panel
SESeat
JAIR CONDITIONERATCAutomatic Air Conditioner
KELECTRICALSCStarting & Charging System
LTLighting System
DIDriver Information System
WWWiper, Washer & Horn
BCSBody Control System
LANLAN System
AVAudio-Visual System
ACSAuto Cruise Control System
PGPower Supply, Ground & Circuit Ele-
ments
LMAINTENANCEMAMaintenance
MINDEXIDXAlphabetical Index
Edition: January 2005
Revision: January 2006

QUICK REFERENCE CHART M35/M45
QUICK REFERENCE CHART M35/M45PFP:00000
ENGINE TUNE-UP DATA (VQ35DE)ELS0003W
Engine modelVQ35DE
Firing order1-2-3-4-5-6
Idle speed
A/T (In “P” or “N” position)rpm
650 ± 50
Ignition timing (BTDC at idle speed)
A/T (In “P” or “N” position)15
± 5
CO% at idle 0.7 - 9.9% and engine runs smoothly
Drive BeltDeflection adjustment Unit: mm (in) Tension adjustment Unit: N (kg, lb)
Used belt
New beltUsed belt
New belt
Limit After adjustment Limit After adjustment
Alternator and power
steering oil pump belt7 (0.28)4 - 5
(0.16 - 0.20)3.5 - 4.5
(0.138 - 0.177)294 (30, 66)730 - 818
(74.5 - 83.5,
164 - 184)838 - 926
(85.5 - 94.5,
188 - 208)
A/C compresor belt 12 (0.47)9 - 10
(0.35 - 0.39)8 - 9
(0.31 - 0.35)196 (20, 44)348 - 436
( 35.5 - 44.5,
78 - 98)470 - 559
( 4 8 - 5 7 ,
106 - 126)
Applied pushing force 98N (10kg, 22lb) —
Radiator cap relief pressure
kPa (kg/cm
2 , psi)
Standard 78 - 98 (0.8 - 1.0, 11 - 14)
Limit 59 (0.6, 9)
Cooling system leakage testing pres-
surekPa (kg/cm
2 , psi)157 (1.6, 23)
Compression pressure
kPa (kg/cm
2 , psi)/rpm
Standard 1,275 (13.0, 185) /300
Minimum 981 (10.0, 142) /300
Spark plug Standard type PLFR5A-11
Hot type PLFR4A-11
Cold type PLFR6A-11
2006

QUICK REFERENCE CHART M35/M45
Transmission A/T 10.3 10 - 7/8 qt
Transfer1.25 2 - 5/8 pt
Differential carrierFront 0.65 1 - 3/8 pt
Rear 1.4 3 pt
Power steering system 1.0 1 - 1/8 qt
Air conditioning systemCompressor oil 0.15 5.03 fl oz
Refrigerant 0.55 kg 1.21 lb UNITLiter US measure
2006

ACS-2Revision: 2006 January2006 M35/M45 PLY CIR 2 ............................................................... 41
DTC 3 VHCL SPEED SE CIRC .............................. 42
DTC 4 ABS/TCS/VDC CIRC .................................. 42
DTC 5 BRAKE SW/STOP L SW ............................. 43
DTC 6 OPERATION SW CIRC ............................... 47
DTC 12 LASER BEAM OFFCNTR ......................... 48
DTC 13 STOP LAMP RLY FIX ............................... 49
DTC 14 ECM CIRCUIT ........................................... 55
DTC 15 GEAR POSITION ...................................... 56
DTC 16 RADAR STAIN .......................................... 57
DTC 18 LASER AIMING INCMP ............................ 57
DTC 21 UNIT HIGH TEMP ..................................... 57
DTC 24 NP RANGE ............................................... 58
DTC 25 SHIFT RANGE IND ................................... 58
DTC 26 ECD MODE MALF .................................... 59
DTC 27 ECD PWR SUPLY CIR .............................. 59
DTC 100 CAN COMM CIRCUIT ............................. 60
DTC 110 CONTROL UNIT (CAN) ........................... 60
TROUBLE DIAGNOSIS FOR SYMPTOMS .............. 61
Symptom Chart ....................................................... 61
Symptom 1: MAIN Switch Does Not Turn ON*
1 ,
MAIN Switch Does Not Turn OFF*
2 ........................ 62Symptom 2: ICC System Cannot Be Set (MAIN
Switch Turns ON/OFF) ............................................ 63
Symptom 3: ICC System Cannot Be Operated by
CANCEL Switch, RESUME/ACCELERATE Switch
or DISTANCE Switch .............................................. 64
Symptom 4: ICC System Is Not Cancelled When
the A/T Selector Lever Is In Other Than “D” and “M” ... 64
Symptom 5: Chime Does Not Sound ...................... 65
Symptom 6: Driving Force Is Hunting ..................... 66
Symptom 7: ICC System Frequently Cannot Detect
the Vehicle Ahead/ Detection Zone Is Short ........... 66
Symptom 8: The System Does Not Detect the Vehi-
cle Ahead at All ....................................................... 67
ELECTRICAL COMPONENT INSPECTION ............. 68
ICC Steering Switch ................................................ 68
ICC Brake Hold Relay ............................................. 68
ICC Brake Switch and Stop Lamp Switch ............... 68
REMOVAL AND INSTALLATION .............................. 69
ICC Sensor Integrated Unit ..................................... 69
REMOVAL ............................................................ 69
INSTALLATION .................................................... 69
ICC Steering Switch ................................................ 69

DESCRIPTION
ACS-7
[ICC]
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ACS
Revision: 2006 January2006 M35/M45
Components DescriptionNKS004CH
CAN CommunicationNKS004CI
CAN (Controller Area Network) is a serial communication line for real time application. It is an on-vehicle mul-
tiplex communication line with high data communication speed and excellent error detection ability. Many elec-
tric control units are equipped onto a vehicle, and each control unit shares information and links with other
control units during operation (not independent). In CAN communication, control units are connected with 2
communication lines (CAN H line, CAN L line) allowing a high rate of information transmission with less wiring.
Each control unit transmits/receives data but selectively reads required data only.
CAN COMMUNICATION UNIT
Refer to LAN-34, "CAN Communication Unit" .
ComponentVehicle-to-
vehicle
distance
control modeConventional
(fixed speed)
cruise
control modeBrake assist
(with pre-
view func-
tion)Description
ICC sensor integrated unit
Controls vehicle distance by operating electric throttle
control actuator based on that sensor signals and
CAN communication data.
Controls vehicle distance by transmitting deceleration
degree commandment value signal to ABS actuator
and electric unit (control unit) when deceleration with
brake is needed.
Irradiates laser beam, and receives reflected laser
beam to measure distance from preceding vehicle.
ECM
Transmits accelerator pedal position signal, ICC brake
switch signal, stop lamp switch signal and ICC steering
switch signal to ICC sensor integrated unit through CAN
communication.
ABS actuator and electric
unit (control unit)
Transmits vehicle speed signal (wheel speed) and
stop lamp switch signal to ICC sensor integrated unit
through CAN communication.
Receives Deceleration degree commandment value
signal from ICC sensor integrated unit, and controls
brake fluid pressure with the ABS motor.
BCM
Transmits front wiper request signal to ICC sensor inte-
grated unit through CAN communication.
TCM
Transmits gear position signal and output shaft revolu-
tion signal to ICC sensor integrated unit through CAN
communication.
Unified meter and A/C amp.
Receives meter display signal, ICC warning lamp signal
and buzzer output signal from ICC sensor integrated
unit through CAN communication.
ICC brake switch
Transmits operating signal to ECM when depressing
brake pedal. ICC sensor integrated unit cancels cruise
system at driver's brake operation.
Stop lamp switch
Transmits operating signal to ECM and ABS actuator
and electric unit (control unit) when depressing brake
pedal. ICC sensor integrated unit cancels cruise system
at driver's brake operation.

ACS-8
[ICC]
DESCRIPTION
Revision: 2006 January2006 M35/M45
Switch OperationNKS004CJ
The system is operated by MAIN switch and four control switches, all mounted on the steering wheel.
IN VEHICLE-TO-VEHICLE DISTANCE CONTROL MODE
IN CONVENTIONAL (FIXED SPEED) CRUISE CONTROL MODE
PKIB8346E
No. Switch name Description
1 RESUME/ACCELERATE switch Resumes set speed or increases speed incrementally.
2 SET/COAST switch Sets desired cruise speed, reduces speed incrementally.
3 CANCEL switch Deactivates system without erasing set speed.
4 DISTANCE switch Changes the following distance from: Long, Middle, Short.
5 MAIN switch Master switch to activate the system (press for less than 1.5 seconds)
No. Switch name Description
1 RESUME/ACCELERATE switch Resumes set speed or increases speed incrementally.
2 SET/COAST switch Sets desired cruise speed, reduces speed incrementally.
3 CANCEL switch Deactivates system without erasing set speed.
4 DISTANCE switch Ineffective in this mode
5 MAIN switch Master switch to activate the system (press for more than 1.5 seconds)

ACS-30
[ICC]
TROUBLE DIAGNOSIS - GENERAL DESCRIPTION
Revision: 2006 January2006 M35/M45
Display Item List
Laser Beam Adjust
For details, refer to ACS-13, "LASER BEAM AIMING ADJUSTMENT" .
SELF-DIAGNOSTIC RESULTS
For details, refer to ACS-39, "Diagnostic Trouble Code (DTC) Chart" .
DATA MONITOR
Operation Procedure
1. Touch “DATA MONITOR” on “SELECT DIAG MODE” screen.
2. Touch any of “MAIN SIGNALS” and “SELECTION FROM
MENU” on selection screen.
3. Touch “START”.
4. Display the data monitor.
5. Touch “COPY” to print data if necessary.
Monitored Item
: Applicable Cause of cancellation Description
OPERATING WIPER Windshield wipers were operated at HI or LO speed operation.
OPERATING ABS ABS function was operated.
OPERATING TCS TCS function was operated.
OPERATING VDC VDC function was operated.
OPE SW VOLT CIRC Outside the standard control switch input voltage was detected.
ECM CIRCUIT ECM did not permit ICC operation.
LASER SUN BEAM Intense light such as sunlight entered ICC sensor integrated unit light sensing part.
LASER TEMP Temperature around ICC sensor integrated unit became low.
OP SW DOUBLE TOUCH ICC steering switches were pressed at the same time.
WHL SPD ELEC NOISE Wheel speed sensor signal caught electromagnetic noise.
VDC/TCS OFF SW VDC OFF switch was pressed.
WHEEL SPD UNMATCH Wheel speed became different from A/T vehicle speed.
TIRE SLIP Wheel slipped.
IGN LOW VOLT Power supply voltage became low.
SNOW MODE SW Snow mode switch was pressed.
VHCL SPD DOWN Vehicle speed becomes 20 MPH (32 km/h for CANADA models) and under.
VHCL SPD UNMATCH Vehicle speed becomes unusual.
NO RECORD —
PKIB8365E
Monitored Item [unit]MAIN
SIGNALSSELEC-
TION FROM
MENUDescription
VHCL SPEED SE
[km/h] or [mph]
Indicates vehicle speed calculated from ICC sensor integrated unit through
CAN communication [ABS actuator and electric unit (control unit) transmits
vehicle speed signal (wheel speed) through CAN communication].
SET VHCL SPD
[km/h] or [mph]
Indicates set vehicle speed memorized in ICC sensor integrated unit.
THRTL OPENING
[%]
Indicates throttle position read from ICC sensor integrated unit through CAN
communication (ECM transmits accelerator pedal position signal through
CAN communication).

TROUBLE DIAGNOSIS - GENERAL DESCRIPTION
ACS-31
[ICC]
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THRTL SENSOR
[deg]NOTE:
This item is displayed, but cannot monitor.
SET DISTANCE
[SHOR/MID/LONG]
Indicates set distance memorized in ICC sensor integrated unit.
MAIN SW
[ON/OFF]
Indicates [ON/OFF] status as judged from ICC steering switch signal (ECM
transmits ICC steering switch signal through CAN communication).
SET/COAST SW
[ON/OFF]
Indicates [ON/OFF] status as judged from ICC steering switch signal (ECM
transmits ICC steering switch signal through CAN communication).
CANCEL SW
[ON/OFF]
Indicates [ON/OFF] status as judged from ICC steering switch signal (ECM
transmits ICC steering switch signal through CAN communication).
RESUME/ACC SW
[ON/OFF]
Indicates [ON/OFF] status as judged from ICC steering switch signal (ECM
transmits ICC steering switch signal through CAN communication).
DISTANCE SW
[ON/OFF]
Indicates [ON/OFF] status as judged from ICC steering switch signal (ECM
transmits ICC steering switch signal through CAN communication).
CRUISE OPE
[ON/OFF]
Indicates whether controlling or not (ON means “controlling”).
BRAKE SW
[ON/OFF]
Indicates [ON/OFF] status as judged from ICC brake switch signal (ECM
transmits ICC brake switch signal through CAN communication).
STOP LAMP SW
[ON/OFF]
Indicates [ON/OFF] status as judged from stop lamp switch signal (ECM
transmits stop lamp switch signal through CAN communication).
CRUISE LAMP
[ON/OFF]
Indicates [ON/OFF] status of MAIN switch indicator lamp output.
CLUTCH SW SIG
[ON/OFF]
NOTE:
This item is displayed, but cannot monitor.
NP SW SIG
[ON/OFF]
NOTE:
This item is displayed, but cannot monitor.
STP LMP DRIVE
[ON/OFF]
Indicates [ON/OFF] status of ICC brake hold relay drive output.
PWR SUP MONI
[V]
Indicates IGN voltage input by ICC sensor integrated unit.
IDLE SW
[ON/OFF]
Indicates [ON/OFF] status of idle switch read from ICC sensor integrated
unit through CAN communication (ECM transmits ON/OFF status through
CAN communication).
OWN VHCL
[ON/OFF]
Indicates [ON/OFF] status of own vehicle indicator output.
VHCL AHEAD
[ON/OFF]
Indicates [ON/OFF] status of vehicle ahead detection indicator output.
ICC WARNING
[ON/OFF]
Indicates [ON/OFF] status of ICC system warning lamp output.
BUZZER O/P
[ON/OFF]
Indicates [ON/OFF] status of ICC warning chime output.
ENGINE RPM
[rpm]
Indicates engine speed read from ICC sensor integrated unit through CAN
communication (ECM transmits engine speed through CAN communica-
tion).
WIPER SW
[OFF/LOW/HIGH]
Indicates wiper [OFF/LOW/HIGH] status (BCM transmits front wiper request
signal through CAN communication).
YAW R AT E
[deg/s]
NOTE:
This item is displayed, but cannot monitor.
D RANGE SW
[ON/OFF]
Indicates [ON/OFF] status of “D” and “M” positions read from ICC sensor
integrated unit through CAN communication; ON when position “D” and “M”
(TCM transmits A/T position indicator lamp signal through CAN communi-
cation). Monitored Item [unit]MAIN
SIGNALSSELEC-
TION FROM
MENUDescription

ACS-36
[ICC]
TROUBLE DIAGNOSIS - GENERAL DESCRIPTION
Revision: 2006 January2006 M35/M45
SELF-DIAGNOSIS BY DOT MATRIX LCD WILL NOT RUN
Possible Irregular Condition
1. CHECK FUSE
Check if the fuse is blown.
OK or NG
OK >> GO TO 2.
NG >> If fuse is blown, be sure to eliminate cause of malfunction before installing new fuse.
2. CHECK ICC SYSTEM DISPLAY
Check if dot matrix LCD in the combination meter illuminates. Refer to DI-17, "
Self-Diagnosis Mode of Combi-
nation Meter" .
OK or NG
OK >> GO TO 3.
NG >> Check combination meter. Refer to DI-18, "
HOW TO PERFORM TROUBLE DIAGNOSIS" .
PKIB8374E
Open or short lines Symptoms Malfunction causes
ICC sensor integrated unit power supply
malfunctionNo voltage supply from ignition switch Fuse blown.
Harness open.
Harness shorted.
Ground cable not connected Harness open.
Harness shorted.
ICC steering switch malfunction No signal transmitted Harness open.
Harness shorted.
Spiral cable open.
Spiral cable shorted.
ICC steering switch or ECM malfunction.
CAN communication system malfunction Signal not transmitted Harness open.
Harness shorted.
CAN communication malfunction.
Combination meter system malfunction Indication not possible Combination meter malfunction.
Unified meter and A/C amp. malfunction.
Dot matrix LCD malfunction.
ICC sensor integrated unit malfunctionICC sensor integrated unit internal mal-
function.
Unit Power source Fuse No.
ICC sensor integrated unit Ignition switch ON or START 82

TROUBLE DIAGNOSIS - GENERAL DESCRIPTION
ACS-37
[ICC]
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3. CHECK POWER SUPPLY CIRCUIT FOR ICC SENSOR INTEGRATED UNIT
1. Turn ignition switch OFF.
2. Disconnect ICC sensor integrated unit connector.
3. Turn ignition switch ON.
4. Check voltage between ICC sensor integrated unit harness con-
nector and ground.
OK or NG
OK >> GO TO 4.
NG >> Repair or replace ICC sensor integrated unit power sup-
ply harness.
4. CHECK GROUND CIRCUIT FOR ICC SENSOR INTEGRATED UNIT
1. Turn ignition switch OFF.
2. Check continuity between ICC sensor integrated unit harness
connector and ground.
OK or NG
OK >> GO TO 5.
NG >> Repair or replace ICC sensor integrated unit ground har-
ness.
5. CHECK CONNECTOR FOR ICC SENSOR INTEGRATED UNIT
1. Check terminals for bend and looseness.
2. Securely connect ICC sensor integrated unit connector again.
3. Perform self-diagnosis without CONSULT-II. Refer toACS-34, "
WITHOUT CONSULT-II" .
Can self
-diagnosis be performed?
YES >> Check connector. (Check connector housing for disconnected, loose, bent, and collapsed termi-
nals. If any malfunction is detected, repair applicable part.)
NO >> GO TO 6.
6. CHECK ICC STEERING SWITCH
Check ICC steering switch. Refer to ACS-68, "
ICC Steering Switch" .
OK or NG
OK >> GO TO 7.
NG >> Replace ICC steering switch.
Terminals
Vo l ta g e
(Approx.) (+)
(–)
ICC sensor integrated
unit connectorTe r m i n a l
E61 1 Ground Battery voltage
PKIB8375E
ICC sensor integrated
unit connectorTerminal
GroundContinuity
E61 4 Yes
PKIB8376E