engine INFINITI M35 2006 Factory Service Manual

CHASSIS AND BODY MAINTENANCE
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Checking Power Steering Fluid and LinesNLS0008E
Check fluid level in reservoir tank with engine off.
Use “HOT” range at fluid temperatures of 50 to 80
C (122 to 176F)
or “COLD” range at fluid temperatures of 0 to 30
C (32 to 86F).
CAUTION:
Do not overfill.
Recommended fluid is Genuine NISSAN PSF or equivalent.
Refer to MA-12, "
RECOMMENDED FLUIDS AND LUBRI-
CANTS" .

Check lines for improper attachment, leaks, cracks, dam-
age, loose connections, chafing and deterioration.
Check rack boots for accumulation of power steering fluid.
Axle and Suspension PartsNLS0008F
Check front and rear axle and suspension parts for excessive play,
cracks, wear or other damage.
Shake each wheel to check for excessive play.
Check wheel bearings for smooth operation.
Check axle and suspension nuts and bolts for looseness.
Check strut (shock absorber) for oil leakage or other damage.
Check suspension ball joint for grease leakage and ball joint
dust cover for cracks or other damage.
SST850C
SST851C
SMA525A
SFA392B

MA-40
SERVICE DATA AND SPECIFICATIONS (SDS)
Revision: 2006 January2006 M35/M45
SERVICE DATA AND SPECIFICATIONS (SDS)PFP:00030
Standard and LimitNLS0008J
BELT DEFLECTION AND TENSION (VQ35DE)
*: If belt tension gauge cannot be installed at check points shown, check drive belt tension at different location on the belt.
BELT DEFLECTION AND TENSION (VK45DE)
ENGINE COOLANT CAPACITY (APPROXIMATE) (VQ35DE)
Unit: (US qt, lmp qt)
ENGINE COOLANT CAPACITY (APPROXIMATE) (VK45DE)
Unit: (US qt, lmp qt)
RADIATOR
Unit: kPa (kg/cm2 , psi)
ENGINE OIL CAPACITY (APPROXIMATE) (VQ35DE)
Unit: (US qt, lmp qt) Deflection 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 compressor
belt12 (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
(48 - 57,
106 - 126)
Applied pushing
force98 N (10 kg, 22 lb) —
KBIA1731J
Tension of drive belts Auto-adjustment by auto tensioner
Engine coolant capacity (With reservoir tank at “MAX” level) 8.9 (9-3/8, 7-7/8)
Reservoir tank engine coolant capacity (At “MAX” level) 0.6 (5/8, 1/2)
Engine coolant capacity (With reservoir tank at “MAX” level) 10.4 (11, 9-1/8)
Reservoir tank engine coolant capacity (At “MAX” level) 0.6 (5/8, 1/2)
Cap relief pressureStandard 78 - 98 (0.8 - 1.0, 11 - 14)
Limit 59 (0.6, 9)
Leakage testing pressure157 (1.6, 23)
Drain and refill With oil filter change 4.7 (5, 4-1/8)
Without oil filter change 4.4 (4-5/8, 3-7/8)
Dry engine (Overhaul) 5.4 (5-3/4, 4-3/4)

SERVICE DATA AND SPECIFICATIONS (SDS)
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ENGINE OIL CAPACITY (APPROXIMATE) (VK45DE)
Unit: (US qt, lmp qt)
SPARK PLUG (PLATINUM-TIPPED TYPE) (VQ35DE)
SPARK PLUG (PLATINUM-TIPPED TYPE) (VK45DE)
WHEEL BALANCE
Drain and refillWith oil filter change 5.5 (5-3/4, 4-7/8)
Without oil filter change 4.9 (5-1/8, 4-1/4)
Dry engine (Overhaul)6.7 (7-1/8, 5-7/8)
MakeNGK
Ty p eStandard PLFR5A-11
Hot PLFR4A-11
Cold PLFR6A-11
Spark plug gapNominal: 1.1mm (0.043 in)
Make NGK
TypeStandard PLFR5A-11
Hot PLFR4A-11
Cold PLFR6A-11
Spark plug gapNominal: 1.1mm (0.043 in)
Maximum allowable unbalanceDynamic (At rim flange) Less than 7 g (0.25 oz) (one side)
Static (At rim flange) Less than 14 g (0.50 oz)

PG-1
POWER SUPPLY, GROUND & CIRCUIT ELEMENTS
K ELECTRICAL
CONTENTS
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POWER SUPPLY, GROUND & CIRCUIT ELEMENTS
POWER SUPPLY ROUTING CIRCUIT ...................... 3
Schematic ................................................................ 3
Wiring Diagram — POWER — ................................. 5
BATTERY POWER SUPPLY — IGNITION SW.
IN ANY POSITION ................................................ 5
ACCESSORY POWER SUPPLY — IGNITION
SW. IN “ACC” OR “ON” ........................................ 11
IGNITION POWER SUPPLY — IGNITION SW.
IN “ON” AND/OR “START” .................................. 12
Fuse ....................................................................... 17
Fusible Link ............................................................ 17
Circuit Breaker ....................................................... 17
IPDM E/R (INTELLIGENT POWER DISTRIBUTION
MODULE ENGINE ROOM) ...................................... 18
System Description ................................................ 18
SYSTEMS CONTROLLED BY IPDM E/R ........... 18
CAN COMMUNICATION LINE CONTROL ......... 18
IPDM E/R STATUS CONTROL ........................... 19
CAN Communication System Description .............. 19
CAN Communication Unit ...................................... 19
Function of Detecting Ignition Relay Malfunction ... 19
CONSULT-II Function (IPDM E/R) ......................... 20
CONSULT-II BASIC OPERATION ....................... 20
SELF-DIAG RESULTS ........................................ 21
DATA MONITOR ................................................. 22
CAN DIAG SUPPORT MNTR ............................. 23
ACTIVE TEST ..................................................... 23
Auto Active Test ..................................................... 24
DESCRIPTION .................................................... 24
OPERATION PROCEDURE ............................... 24
INSPECTION IN AUTO ACTIVE TEST MODE ... 25
Schematic .............................................................. 28
IPDM E/R Terminal Arrangement ........................... 29
Check IPDM E/R Power Supply and Ground Circuit ... 30
Inspection with CONSULT-II (Self-Diagnosis) ........ 31
Removal and Installation of IPDM E/R ................... 31
REMOVAL ........................................................
... 31
INSTALLATION ................................................... 32
PDU (POWER DISTRIBUTION UNIT) ...................... 33
Component Parts and Harness Connector Location ... 33System Description ................................................. 33
PUSH-BUTTON IGNITION SWITCH OPERAT-
ING PROCEDURE .............................................. 33
Wiring Diagram — PDU — ..................................... 35
Terminals and Reference Value for Intelligent Key
Unit ......................................................................... 37
Terminals and Reference Value for PDU ................ 38
Work Flow ............................................................... 38
Trouble Diagnosis Symptom Chart ......................... 39
Check CAN Communication System ...................... 39
Check PDU Power Supply and Ground Circuit ...... 40
Check Push-Button Ignition Switch (Ignition Switch)
System .................................................................... 40
Check Push-Button Ignition Switch (Indicator Cir-
cuit) System ............................................................ 42
PDU Communication Circuit System 1 ................... 43
PDU Communication Circuit System 2 ................... 44
Removal and Installation of PDU ............................ 45
REMOVAL ........................................................
... 45
INSTALLATION ................................................... 45
GROUND ................................................................... 46
Ground Distribution ................................................. 46
MAIN HARNESS ................................................. 46
ENGINE ROOM HARNESS ................................ 51
ENGINE CONTROL HARNESS/VQ ENGINE
MODELS ............................................................. 55
ENGINE CONTROL HARNESS/VK ENGINE
MODELS ............................................................. 56
BODY HARNESS ................................................ 57
BODY NO. 2 HARNESS ..................................... 62
HARNESS ................................................................. 63
Harness Layout ...................................................... 63
HOW TO READ HARNESS LAYOUT ................. 63
OUTLINE ............................................................. 64
MAIN HARNESS ................................................. 65
NAVIGATION SUB-HARNESS & A/C HARNESS ... 70
ENGINE ROOM HARNESS ................................ 71
ENGINE CONTROL HARNESS (VQ ENGINE) ... 78
ENGINE CONTROL HARNESS (VK ENGINE) ... 81
BODY HARNESS ................................................ 84

PG-2Revision: 2006 January2006 M35/M45 BODY NO. 2 HARNESS ...................................... 88
TAIL HARNESS ................................................... 89
ROOM LAMP HARNESS .................................... 90
FRONT DOOR HARNESS .................................. 91
REAR DOOR HARNESS .................................... 92
Wiring Diagram Codes (Cell Codes) ....................... 93
ELECTRICAL UNITS LOCATION ............................. 96
Electrical Units Location ......................................
... 96
ENGINE COMPARTMENT .................................. 96
PASSENGER COMPARTMENT .......................... 98
LUGGAGE COMPARTMENT ............................101
HARNESS CONNECTOR .......................................102
Description ............................................................102
HARNESS CONNECTOR (TAB-LOCKING
TYPE) ................................................................102
HARNESS CONNECTOR (SLIDE-LOCKING TYPE) ................................................................103
ELECTRICAL UNITS ..............................................104
Terminal Arrangement ...........................................104
SMJ (SUPER MULTIPLE JUNCTION) ....................106
Terminal Arrangement ...........................................106
STANDARDIZED RELAY ........................................109
Description ............................................................109
NORMAL OPEN, NORMAL CLOSED AND
MIXED TYPE RELAYS ......................................109
TYPE OF STANDARDIZED RELAYS ................109
FUSE BLOCK - JUNCTION BOX (J/B) .................. 111
Terminal Arrangement ........................................... 111
FUSE, FUSIBLE LINK AND RELAY BOX ..............112
Terminal Arrangement ...........................................112

PG-18
IPDM E/R (INTELLIGENT POWER DISTRIBUTION MODULE ENGINE ROOM)
Revision: 2006 January2006 M35/M45
IPDM E/R (INTELLIGENT POWER DISTRIBUTION MODULE ENGINE ROOM)
PFP:284B7
System DescriptionNKS004E2
IPDM E/R (Intelligent Power Distribution Module Engine Room) integrates the relay box and fuse block
which were originally placed in engine compartment. It controls integrated relay via IPDM E/R control cir-
cuit.
IPDM E/R-integrated control circuit performs ON-OFF operation of relay, CAN communication control and
oil pressure switch signal reception, etc.
It controls operation of each electrical part via ECM, BCM and CAN communication lines.
CAUTION:
None of the IPDM E/R-integrated relays can be removed.
SYSTEMS CONTROLLED BY IPDM E/R
1. Lamp control
Using CAN communication, it receives signal from BCM and controls the following lamps:
Headlamps (HI, LO)
Tail, parking and license plate lamps
Front fog lamps
2. Daytime light relay control (for Canada models)
Using CAN communication, it receives signals from BCM and controls the daytime light relay.
3. Wiper control
Using CAN communication, it receives signals from BCM and controls the front wipers.
4. Rear window defogger relay control
Using CAN communication, it receives signals from BCM and controls the rear window defogger relay.
5. A/C compressor control
Using CAN communication, it receives signals from ECM and controls the A/C relay.
6. Cooling fan control
Using CAN communication, it receives signals from ECM and controls cooling fan via cooling fan control
module.
7. Horn control
Using CAN communication, it receives signals from BCM and controls horn relay.
8. Starter motor relay control
Using CAN communication, it receives signals from BCM and controls starter motor relay.
9. Alternator control
Using CAN communication, it receives signal from ECM and controls power generation voltage.
CAN COMMUNICATION LINE CONTROL
With CAN communication, by connecting each control unit using two communication lines (CAN L-line, CAN
H-line), it is possible to transmit maximum amount of information with minimum wiring. Each control unit can
transmit and receive data, and reads necessary information only.
1. Fail-safe control
When CAN communication with other control units is impossible, IPDM E/R performs fail-safe control.
After CAN communication recovers normally, it also returns to normal control.
Operation of control parts by IPDM E/R during fail-safe mode is as follows:
Controlled system Fail-safe mode
Headlamps
With the ignition switch ON, the headlamp low relay is ON.
With the ignition switch OFF, the headlamp low relay is OFF.
Tail, parking and
license plate lamps
With the ignition switch ON, the tail lamp relay is ON.
With the ignition switch OFF, the tail lamp relay is OFF.
Cooling fan
With the ignition switch ON, the cooling fan HI operates.
With the ignition switch OFF, the cooling fan stops.
Front wiperUntil the ignition switch is turned off, the front wiper LO and HI remains in the same status it was in just
before fail
safe control was initiated.

IPDM E/R (INTELLIGENT POWER DISTRIBUTION MODULE ENGINE ROOM)
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IPDM E/R STATUS CONTROL
In order to save power, IPDM E/R switches status by itself based on each operating condition.
1. CAN communication status
CAN communication is normally performed with other control units.
Individual unit control by IPDM E/R is normally performed.
When sleep request signal is received from BCM, mode is switched to sleep transient status.
2. Sleep transient status
Process to stop CAN communication is activated.
All systems controlled by IPDM E/R are stopped. When 3 seconds have elapsed after CAN communi-
cation with other control units is stopped, mode switches to sleep status.
3. Sleep status
IPDM E/R operates in low power mode.
CAN communication is stopped.
When a change in CAN communication line is detected, mode switches to CAN communication status.
When a change hood switch or ignition switch signal is detected, mode switches to CAN communica-
tion status.
CAN Communication System DescriptionNKS004E3
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. Modern
vehicles are equipped with many electronic control units and each control unit shares information and links
with other control units during operation (not independent). In CAN communication, control units are con-
nected 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 UnitNKS004E4
Refer to LAN-34, "CAN Communication Unit" .
Function of Detecting Ignition Relay MalfunctionNKS004E5
When contact point of integrated ignition relay is stuck and cannot be turned OFF, IPDM E/R turns ON tail
and parking lamps for 10 minutes to indicate ignition relay malfunction.
When a state of ignition relay having built-in does not agree with a state of Ignition switch signal input by a
CAN communication from BCM, IPDM E/R lets tail lamp relay operate.
NOTE:
When the ignition switch is turned ON, the tail lamps are OFF.
Rear window defogger Rear window defogger relay OFF
A/C compressor A/C relay OFF
Front fog lamps Front fog lamp relay OFF Controlled system Fail-safe mode
Ignition switch signal Ignition relay status Tail lamp relay
ON ON —
OFF OFF —
ON OFF —
OFF ON ON (10 minutes)

PG-20
IPDM E/R (INTELLIGENT POWER DISTRIBUTION MODULE ENGINE ROOM)
Revision: 2006 January2006 M35/M45
CONSULT-II Function (IPDM E/R)NKS004E6
CONSULT-II can display each diagnostic item using the diagnostic test modes shown following.
CONSULT-II BASIC OPERATION
CAUTION:
If CONSULT-II is used with no connection of CONSULT-II CONVERTER, malfunctions might be
detected in self-diagnosis depending on control unit which carry out CAN communication.
1. With the ignition switch OFF, connect CONSULT-II and CON-
SULT-II CONVERTER to the data link connector, and then turn
the ignition switch ON.
2. Touch “START (NISSAN BASED VHCL)”.
3. Touch “IPDM E/R” on “SELECT SYSTEM” screen.
If “IPDM E/R” is not indicated, refer to GI-40, "
CONSULT-II Data
Link Connector (DLC) Circuit" .
Inspection Item, Diagnosis Mode Description
SELF-DIAG RESULTS The IPDM E/R performs diagnosis of the CAN communication and self-diagnosis.
DATA MONITOR The input/output data of the IPDM E/R is displayed in real time.
CAN DIAG SUPPORT MNTR The result of transmit/receive diagnosis of CAN communication can be read.
ACTIVE TEST The IPDM E/R sends a drive signal to electronic components to check their operation.
SKIB3794E
BCIA0029E
BCIA0030E

IPDM E/R (INTELLIGENT POWER DISTRIBUTION MODULE ENGINE ROOM)
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4. Select the desired part to be diagnosed on the “SELECT DIAG
MODE” screen.
SELF-DIAG RESULTS
Operation Procedure
1. Touch “SELF-DIAG RESULTS” on “SELECT DIAG MODE” screen.
2. Check display content in self-diagnostic results.
Display Item List
NOTE:
The details for display of the period are as follows:
CRNT: Error currently detected with IPDM E/R.
PAST: Error detected in the past and memorized with IPDM E/R.
BCIA0031E
Display ItemsCONSULT-II
display codeMalfunction detecting conditionTIME
Possible causes
CRNT PAST
NO DTC IS
DETECTED.FURTHER
TESTING MAY BE
REQUIRED.-----
CAN COMM CIRC U1000
If CAN communication reception/transmission
data has a malfunction, or if any of the control
units malfunction, data reception/transmission
cannot be confirmed.
When the data in CAN communication is not
received before the specified time
Any of or several items
below have errors.
TRANSMIT DIAG
ECM
BCM/SEC

PG-22
IPDM E/R (INTELLIGENT POWER DISTRIBUTION MODULE ENGINE ROOM)
Revision: 2006 January2006 M35/M45
DATA MONITOR
Operation Procedure
1. Touch “DATA MONITOR” on “SELECT MONITOR ITEM ” screen.
2. Touch “ALL SIGNALS”, “MAIN SIGNALS” or “SELECTION FROM MENU” on the “DATA MONITOR”
screen.
3. Touch the required monitoring item on “SELECTION FROM MENU”. In “ALL SIGNALS”, all items are
monitored. In “MAIN SIGNALS”, predetermined items are monitored.
4. Touch “START”.
5. Touch “RECORD” while monitoring to record the status of the item being monitored. To stop recording,
touch “STOP”.
All Signals, Main Signals, Selection From Menu
NOTE:
Perform monitoring of IPDM E/R data with the ignition switch ON. When the ignition switch is at ACC, the display may not be cor-
rect.
*1: Only the vehicle with day time light system operates. ALL SIGNALS All items will be monitored.
MAIN SIGNALS Monitor the predetermined item.
SELECTION FROM MENU Select any item for monitoring.
Item nameCONSULT-II
screen displayDisplay or unitMonitor item selection
Description
ALL
SIGNALSMAIN
SIGNALSSELECTION
FROM
MENU
Motor fan request MOTOR FAN REQ 1/2/3/4
Signal status input from ECM
A/C Compressor
requestAC COMP REQ ON/OFF
Signal status input from ECM
Tail & clearance
requestTAIL&CLR REQ ON/OFF
Signal status input from BCM
Headlamp LO
requestHL LO REQ ON/OFF
Signal status input from BCM
Headlamp HI
requestHL HI REQ ON/OFF
Signal status input from BCM
Front fog lamp
request FR FOG REQ ON/OFF
Signal status input from BCM
Front wiper request FR WIP REQSTOP/1LOW/
LOW/HI
Signal status input from BCM
Wiper auto stop WIP AUTO STOP ACT P/STOP P
Output status of IPDM E/R
Wiper protection WIP PROT OFF/BLOCK
Control status of IPDM E/R
Starter request ST RLY REQ ON/OFF
Signal status input from BCM
Ignition relay status IGN RLY ON/OFF
Ignition relay status monitored
with IPDM E/R
Rear window defog-
ger requestRR DEF REQ ON/OFF
Signal status input from BCM
Oil pressure switch OIL P SW OPEN/CLOSE
Signal status input in IPDM E/R
Daytime running
light requestDTRL REQ
*1ON/OFFSignal status input from BCM
Hood switch HOOD SW ON/OFF
Signal status input in IPDM E/R
Theft warning horn
requestTHFT HRN REQ ON/OFF
Signal status input from BCM
Horn chirp HORN CHIRP ON/OFF
Output status of IPDM E/R