2006 INFINITI M35 ignition

ENGINE MAINTENANCE (VK45DE ENGINE)
MA-27
C
D
E
F
G
H
I
J
K
MA
B
MA
Revision: 2006 January2006 M35/M45
3. Screw oil filter manually until it touches the installation surface,
then tighten it by 2/3 turn. Or tighten to specification.
INSPECTION AFTER INSTALLATION
1. Start engine, and check there is no leaks of engine oil.
2. Stop engine and wait for 15 minutes.
3. Check the engine oil level and add engine oil. Refer to MA-25, "
Changing Engine Oil" .
Changing Spark Plugs (Platinum-Tipped Type)NLS0007X
REMOVAL
1. Remove engine cover with power tool. Refer to EM-173, "ENGINE ROOM COVER" .
2. Remove ignition coil. Refer to EM-190, "
IGNITION COIL" .
3. Remove spark plug with spark plug wrench (commercial service
tool).
CAUTION:
Do not drop or shock it.
INSPECTION AFTER REMOVAL
Use standard type spark plug for normal condition.
Hot type spark plug is suitable when fouling occurs with standard type spark plug under conditions such as:
Frequent engine starts
Low ambient temperatures
Cold type spark plug is suitable when spark plug knock occurs with standard type spark plug under conditions
such as:
Extended highway driving
Frequent high engine revolution
CAUTION:
Do not drop or shock spark plug.Oil filter:
:17.7 Nꞏm (1.8 kg-m, 13 ft-lb)
SMA229B
SEM294A
MakeNGK
Standard typePLFR5A-11
Hot typePLFR4A-11
Cold typePLFR6A-11
Gap (Nominal) : 1.1 mm (0.043 in)

PG-1
POWER SUPPLY, GROUND & CIRCUIT ELEMENTS
K ELECTRICAL
CONTENTS
C
D
E
F
G
H
I
J
L
M
SECTION PG
A
B
PG
Revision: 2006 January2006 M35/M45
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

POWER SUPPLY ROUTING CIRCUIT
PG-5
C
D
E
F
G
H
I
J
L
MA
B
PG
Revision: 2006 January2006 M35/M45
Wiring Diagram — POWER —NKS004DY
BATTERY POWER SUPPLY — IGNITION SW. IN ANY POSITION
TKWT3566E

POWER SUPPLY ROUTING CIRCUIT
PG-11
C
D
E
F
G
H
I
J
L
MA
B
PG
Revision: 2006 January2006 M35/M45
ACCESSORY POWER SUPPLY — IGNITION SW. IN “ACC” OR “ON”
TKWT3572E

PG-12
POWER SUPPLY ROUTING CIRCUIT
Revision: 2006 January2006 M35/M45
IGNITION POWER SUPPLY — IGNITION SW. IN “ON” AND/OR “START”
TKWT3573E

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)
PG-19
C
D
E
F
G
H
I
J
L
MA
B
PG
Revision: 2006 January2006 M35/M45
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