2007 INFINITI M35 key battery

ILLUMINATION
LT-295
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Revision: 2007 April2007 M35/M45

to door mirror remote control switch (illumination) terminal 15

to AFS switch (illumination) terminal 6 (with AFS)

to rear sunshade front switch (illumination) terminal 6 (with rear control switch)

to A/T illumination terminal 2

to snow mode switch (illumination) terminal 6 (ADW models)

to rear control cancel switch (illumination) terminal 5 (with rear control switch)

to clock terminal 4

to multifunction switch terminal 4

to audio unit terminal 8

to DVD player terminal 17 (With DVD player)

to climate controlled seat switch driver side (illumination) terminal 8 (with climate controlled seat) and

to climate controlled seat switch passenger side (illumination) terminal 8 (with climate controlled seat)

through illumination control switch terminal 2

to illumination control switch terminal 3

through grounds M16 and M70,

to cigarette lighter socket (illumination) terminal 1

to map lamp (illumination) terminal 4

to power window main switch illumination terminal 2 and

to glove box lamp terminal 2

through grounds M16 and M70,

to ashtray illumination (rear RH) terminal 2

through grounds B402, B405,

to ashtray illumination (rear LH) terminal 2

to automatic return cancel switch (illumination) terminal 2 (With rear control switch)

to rear power seat switch LH (illumination) terminal 3 (With rear control switch)

to rear heated seat switch LH (illumination) terminal 8 (With rear control switch)

through grounds B5, B40 and B131,

through rear sunshade cancel relay terminal 7(With rear control switch)

to rear sunshade rear switch (illumination) terminal 7 (With rear control switch)

through grounds B5, B40, B131 and B559.

to rear control switch terminal 4

to rear power seat switch RH (illumination) terminal 3 (With rear control switch)

to rear heated seat switch RH (illumination) terminal 8 (With rear control switch)

through grounds B5, B40, B131 and B559.
With power and ground supplied, illumination lamps illuminate.
EXTERIOR LAMP BATTERY SAVER CONTROL
BCM activates the exterior lamp battery saver control function and turns off the exterior lamps to prevent bat-
tery from over discharge when the combination switch (lighting switch) is in 1ST or 2ND position and/or the
front fog lamp switch ON and the door lock operation is performed by keyless entry system.
CAN Communication System DescriptionNKS003TI
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-
tronic 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 UnitNKS003TJ
Refer to LAN-50, "CAN System Specification Chart" .

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 ........................................ 20
DATA MONITOR ................................................. 21
CAN DIAG SUPPORT MNTR ............................. 22
ACTIVE TEST ..................................................... 22
Auto Active Test ..................................................... 23
DESCRIPTION .................................................... 23
OPERATION PROCEDURE ............................... 23
INSPECTION IN AUTO ACTIVE TEST MODE ... 24
Schematic .............................................................. 27
IPDM E/R Terminal Arrangement ........................... 28
Check IPDM E/R Power Supply and Ground Circuit ... 29
Inspection with CONSULT-II (Self-Diagnosis) ........ 30
Removal and Installation of IPDM E/R ................... 31
REMOVAL ........................................................... 31
INSTALLATION ................................................... 31
PDU (POWER DISTRIBUTION UNIT) ...................... 32
Component Parts and Harness Connector Location ... 32System Description ................................................. 32
PUSH-BUTTON IGNITION SWITCH OPERAT-
ING PROCEDURE .............................................. 32
Wiring Diagram — PDU — ..................................... 34
Terminals and Reference Value for Intelligent Key
Unit ......................................................................... 36
Terminals and Reference Value for PDU ................ 37
Work Flow ............................................................... 37
Trouble Diagnosis Symptom Chart ......................... 38
Check CAN Communication System ...................... 38
Check PDU Power Supply and Ground Circuit ...... 39
Check Push-Button Ignition Switch (Ignition Switch)
System .................................................................... 39
Check Push-Button Ignition Switch (Indicator Cir-
cuit) System ............................................................ 41
PDU Communication Circuit System 1 ................... 42
PDU Communication Circuit System 2 ................... 43
Removal and Installation of PDU ............................ 44
REMOVAL ........................................................... 44
INSTALLATION ................................................... 44
GROUND ................................................................... 45
Ground Distribution ................................................. 45
MAIN HARNESS ................................................. 45
ENGINE ROOM HARNESS ................................ 50
ENGINE CONTROL HARNESS/VQ ENGINE
MODELS ............................................................. 54
ENGINE CONTROL HARNESS/VK ENGINE
MODELS ............................................................. 55
BODY HARNESS ................................................ 56
BODY NO. 2 HARNESS ..................................... 60
HARNESS ................................................................. 62
Harness Layout ...................................................... 62
HOW TO READ HARNESS LAYOUT ................. 62
OUTLINE ............................................................. 63
MAIN HARNESS ................................................. 64
NAVIGATION SUB-HARNESS & A/C HARNESS ... 69
ENGINE ROOM HARNESS ................................ 70
ENGINE CONTROL HARNESS (VQ ENGINE) ... 77
ENGINE CONTROL HARNESS (VK ENGINE) ... 80
BODY HARNESS ................................................ 83

PG-36
PDU (POWER DISTRIBUTION UNIT)
Revision: 2007 April2007 M35/M45
Terminals and Reference Value for Intelligent Key UnitNKS004EG
Termi-
nalWire
ColorItemSignal
Input/
OutputCondition
Voltage (V)
Approx. Ignition
Switch
PositionOperation or Conditions
1 SB Power source (Fuse) Input LOCK — Battery voltage
3 Y IPDM E/R status signal Output —Engine starting (During Cranking) 5
Other than above 2
8WPush-button ignition
switch
(LOCK LED)InputLOCKPush-button ignition switch is in LOCK
position0
—Push-button ignition switch is in any posi-
tion
(Except LOCK position)1.2
9LPush-button ignition
switch
(ACC LED)InputACCPush-button ignition switch is in ACC posi-
tion0
—Push-button ignition switch is in any posi-
tion
(Except ACC position)1.2
10 VPush-button ignition
switch
(ON LED)InputONPush-button ignition switch is in ON posi-
tion0
—Push-button ignition switch is in any posi-
tion
(Except ON position)1.2
20 B Ground — — — 0
30 L/W Ignition switch (ACC) Input ACC — Battery voltage
31 GR Ignition switch (ON) Input ON — Battery voltage
34 R PDU feedback signal Output LOCKPush-button ignition switch is in LOCK
state, 30 seconds after all doors closed1
Other than above 0
36 W Ignition signal 2 InputLOCK — Battery voltage
ACC — Battery voltage
ON — 0
37 P CAN-LInput/
Output—— —
38 L CAN-HInput/
Output—— —
39 BR/W Push switch Input —Depress push-button ignition switch 0
Other than above Battery voltage
40 B Ground — — — 0
41 Y Power source (Fuse) Input LOCK — Battery voltage
42 P PDU wake up signal Output LOCKPush-button ignition switch is in LOCk
state, 30 seconds after all doors closedBattery voltage
Other than above 0
44 BR Ignition signal 1 InputLOCK — Battery voltage
ACC — Battery voltage
ON — 0
45 SB ACC signal InputLOCK — Battery voltage
ACC — 0
ON — 0
56 B Ground — — — 0

PDU (POWER DISTRIBUTION UNIT)
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Terminals and Reference Value for PDUNKS004EH
Work FlowNKS004EI
1. Check the symptom and customer's requests.
2. Understand outline of system. Refer to PG-32, "
System Description" .
3. Confirm that Intelligent Key system operates normally.
Refer to BL-24, "
POWER DOOR LOCK SYSTEM" .
4. Repair or replace any malfunctioning parts.
Refer to PG-38, "
Trouble Diagnosis Symptom Chart" .
5. INSPECTION END
57 L Power source (Fuse) Input LOCK — Battery voltage
72 B Ground — — — 0 Te r m i -
nalWire
ColorItemSignal
Input/
OutputCondition
Voltage (V)
Approx. Ignition
Switch
PositionOperation or Conditions
Termi-
nalWire
ColorItemSignal
Input/
OutputCondition
Voltage (V)
Approx. Ignition
Switch
PositionOperation or Conditions
1 P PDU wake up signal Output LOCKPush-button ignition switch is in LOCK
state, 30 seconds after all doors closeBattery voltage
Other than above 0
4 BR Ignition signal 1 OutputLOCK — Battery voltage
ACC — Battery voltage
ON — 0
5 W Ignition signal 2 OutputLOCK — Battery voltage
ACC — Battery voltage
ON — 0
8 SB ACC signal OutputLOCK — Battery voltage
ACC — 0
ON — 0
10 B Ground — — — 0
11 Y IPDM E/R status signal Input —Engine starting (During Cranking) 5
Other than above 2
12 R PDU feedback signal Input LOCKPush-button ignition switch is in LOCK
state, 30 seconds after all doors close1
Other than above 0
14 SB Power source (Fuse) Input LOCK — Battery voltage
15 L Power source (F/L) Input LOCK — Battery voltage
16 W ACC power output OutputLOCK — 0
ACC — Battery voltage
ON — Battery voltage
17 G Power source (Fuse) Input LOCK — Battery voltage
18 BR ON power output OutputLOCK — 0
ACC — 0
ON — Battery voltage

PDU (POWER DISTRIBUTION UNIT)
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Check PDU Power Supply and Ground CircuitNKS004EL
1. CHECK POWER SUPPLY CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect PDU connector.
3. Check voltage between PDU harness connector and ground.
OK or NG
OK >> GO TO 2.
NG >> Repair or replace PDU power supply circuit.
2. CHECK GROUND CIRCUIT
Check continuity between PDU harness connector and ground.
OK or NG
OK >> Power supply and ground circuits are OK.
NG >> Repair or replace the PDU ground circuit.
Check Push-Button Ignition Switch (Ignition Switch) SystemNKS004EM
1. CHECK PUSH-BUTTON IGNITION SWITCH
1. Turn ignition switch OFF.
2. Disconnect Intelligent Key unit connector.
3. Check continuity between Intelligent Key unit harness connector
and ground.
OK or NG
OK >> Push-button ignition switch system is OK.
NG >> GO TO 2.
PDU connectorTe r m i n a l
Voltage (V)
(Approx.)
(+) (-)
M3114
Ground Battery voltage 15
17
PIIB6115E
PDU connector Terminal Continuity
M30 10 Ground Yes
PIIB6116E
Intelligent
Key unit
connectorTerminal Condition Continuity
M32 39 GroundPush-button ignition
switch is pressedYe s
Push-button ignition
switch is releasedNo
PIIB6117E

PDU (POWER DISTRIBUTION UNIT)
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Check Push-Button Ignition Switch (Indicator Circuit) SystemNKS004EN
1. CHECK PUSH-BUTTON IGNITION SWITCH INDICATOR SYSTEM
1. Turn ignition switch OFF.
2. Check voltage between Intelligent Key unit connector and
ground.
OK or NG
OK >> GO TO 2.
NG >> Repair or replace push-button ignition switch.
2. PUSH-BUTTON IGNITION SWITCH INDICATOR POWER SUPPLY SIGNAL
1. Turn ignition switch OFF.
2. Disconnect push-button ignition switch.
3. Check voltage between push-button ignition switch connector
and ground.
OK or NG
OK >> GO TO 3.
NG >> Repair or replace push-button ignition switch.
Intelligent
Key unit
connectorTerminal
Push-button ignition
switch conditionVoltage (V)
(Approx)
(+) (-)
M328
Ground part of
push-button
ignition switchLOCK position 0
Except LOCK position 1.2
9ACC position 0
Except ACC position 1.2
10ON position 0
Except ON position 1.2
PIIB6121E
Push-button ignition
switch connectorTerminal
Voltage (V)
(Approx)
(+) (-)
M27 8 Ground Battery voltage
PIIB6122E

PG-42
PDU (POWER DISTRIBUTION UNIT)
Revision: 2007 April2007 M35/M45
3. PUSH-BUTTON IGNITION SWITCH INDICATOR GROUND CIRCUIT
1. Disconnect Intelligent Key unit connector.
2. Check continuity between Intelligent Key unit connector and
push-button ignition switch connector.
3. Check continuity between push-button ignition switch connector.
OK or NG
OK >> Check harness condition.
NG >> Repair or replace harness.
PDU Communication Circuit System 1NKS004EO
1. CHECK PDU COMMUNICATION CIRCUIT 1
1. Turn ignition switch OFF.
2. Check voltage between Intelligent Key unit connector and
ground.
OK or NG
OK >> Check harness condition.
NG >> GO TO 2.
AB
Continuity
Intelligent Key
unit connectorTe r m i n a lPush-button
ignition switch
connectorTerminal
M328
M275
Ye s 96
10 7
Push-button ignition
switch connectorTerminal Continuity
M275
Ground No 6
7
PIIB6123E
Intelligent Key
unit connectorTerminal ConditionVoltage (V)
(Approx)
M3342 GroundDriver side door is opened
(PDU wake up mode)0
Push-button ignition switch is in
lock state, 30 seconds after all
doors are closed (PDU sleep
mode)Battery
voltage
45 GroundPush-button ignition switch is in
LOCK positionBattery
voltage
Push-button ignition switch is in
ACC position0
Push-button ignition switch is in
ON position0
PIIB6124E

PRECAUTIONS
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PRECAUTIONSPFP:00001
Precautions for Supplemental Restraint System (SRS) “AIR BAG” and “SEAT
BELT PRE-TENSIONER”
NGS000CZ
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 Necessary for Steering Wheel Rotation After Battery DisconnectNGS000D0
NOTE:

This Procedure is applied only to models with Intelligent Key system and NVIS/IVIS (NISSAN/INFINITI
VEHICLE IMMOBILIZER SYSTEM - NATS).

Remove and install all control units after disconnecting both battery cables with the ignition knob in the
″LOCK″ position.

Always use CONSULT-III to perform self-diagnosis as a part of each function inspection after finishing
work. If DTC is detected, perform trouble diagnosis according to self-diagnostic results.
For models equipped with the Intelligent Key system and NVIS/IVIS, an electrically controlled steering lock
mechanism is adopted on the key cylinder.
For this reason, if the battery is disconnected or if the battery is discharged, the steering wheel will lock and
steering wheel rotation will become impossible.
If steering wheel rotation is required when battery power is interrupted, follow the procedure below before
starting the repair operation.
OPERATION PROCEDURE
1. Connect both battery cables.
NOTE:
Supply power using jumper cables if battery is discharged.
2. Use the Intelligent Key or mechanical key to turn the ignition switch to the ″ACC″ position. At this time, the
steering lock will be released.
3. Disconnect both battery cables. The steering lock will remain released and the steering wheel can be
rotated.
4. Perform the necessary repair operation.
5. When the repair work is completed, return the ignition switch to the ″LOCK″ position before connecting
the battery cables. (At this time, the steering lock mechanism will engage.)
6. Perform a self-diagnosis check of all control units using CONSULT-III.