2007 INFINITI M35 control unit

PG-30
IPDM E/R (INTELLIGENT POWER DISTRIBUTION MODULE ENGINE ROOM)
Revision: 2007 April2007 M35/M45
Inspection with CONSULT-II (Self-Diagnosis)NKS004EB
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. CHECK SELF DIAGNOSTIC RESULT
1. Connect CONSULT-II and select “IPDM E/R” on the “SELECT SYSTEM” screen.
2. Select “SELF-DIAG RESULTS” on the “SELECT DIAG MODE” screen.
3. Check display content in self diagnostic results.
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.
Contents displayed
NO DTC IS DETECTED.FURTHER TESTING MAY BE REQUIRED.>>INSPECTION END
CAN COMM CIRC>>After print-out of the monitor items, refer to LAN-50, "
CAN System Specification Chart" .
CONSULT-II displayCONSULT-II
display codeTIME
Details of diagnosis result
CRNT PAST
NO DTC IS DETECTED.
FURTHER TESTING MAY BE REQUIRED.- - - No malfunction
CAN COMM CIRC U1000××Any of or several items below have errors.

TRANSMIT DIAG

ECM

BCM/SEC

PG-32
PDU (POWER DISTRIBUTION UNIT)
Revision: 2007 April2007 M35/M45
PDU (POWER DISTRIBUTION UNIT)PFP:285F1
Component Parts and Harness Connector LocationNKS004ED
System DescriptionNKS004EE

PDU (Power Distribution Unit) is the unit that executes the power distribution with the control signal from
the Intelligent Key unit, instead of the mechanical power supply mechanism by conventional key cylinder.

The push-button ignition switch is operable when the Intelligent Key is within the detention area of the
interior antenna or is inserted to the key slot.

The push-button ignition switch operation is input to the Intelligent Key unit as a request signal. Then, the
Intelligent Key unit processes the request signal and orders the PDU to switch into the appropriate power
supply position.
NOTE:
The prerequisite for starting the engine varies by the state of brake pedal, A/T selector lever, and vehicle
speed.

PDU distributes power to each power supply circuit according to the request signal received.

The power supply position can be confirmed by illumination of the indicators in the upper surroundings of
the push-button ignition switch.
PUSH-BUTTON IGNITION SWITCH OPERATING PROCEDURE
The power supply position switching operation can be performed by the following operation.
NOTE:

When an Intelligent Key is within the detection area of inside antenna and when it is inserted to the key
slot, it is equivalent to the operations below.

When starting the engine, the Intelligent Key unit monitors the engine start conditions (brake pedal operat-
ing condition, A/T selector lever position, and vehicle speed).
1. Fuse block (J / B) fuse layout 2. Fuse and fusible link box 3. PDU (power distribution unit)
M30,M31
4. Intelligent key unit M32,M33 5. Push-button ignition switch M27
PIIB6094E

PG-38
PDU (POWER DISTRIBUTION UNIT)
Revision: 2007 April2007 M35/M45
Trouble Diagnosis Symptom ChartNKS004EJ
Before performing the diagnosis in the following table, check the contents of PG-37, "Work Flow" .
Check CAN Communication SystemNKS004EK
1. CHECK SELF-DIAGNOSTIC RESULTS
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 performs CAN communication.
With CONSULT-II

Connect CONSULT-II, and turn ignition switch ON.

Touch “INTELLIGENT KEY” on “SELECT SYSTEM” screen.

Touch “SELF-DIAG RESULTS” on “SELECT DIAG MODE” screen.

Check display content in self-diagnostic results.
OK or NG
NO DTC IS DETECTED>> INSPECTION END
CAN COMM CIRCUIT [U1000]>> After printing “SELF-DIAGNOSIS RESULTS”, go to “CAN SYSTEM”,
Refer to LAN-42, "
Precautions When Using CONSULT-II" .
CONTROL UNIT (CAN) [U1010]>> Replace Intelligent Key unit.
Symptom Suspect Systems Refer to
Even if the push-button ignition switch is pressed, the
power supply position and the push-button ignition switch
position indicator does not response.1. Check push-button ignition switch (ignition switch)
systemPG-39
2. Replace Intelligent Key unitBL-123
The push-button ignition switch position indicator turns
on synchronizing with the push-button ignition switch
operation. But the actual power supply is not input.1. Check PDU power supply and ground circuit systemPG-39
2. Check PDU communication circuit system 1PG-42
3. Replace PDUPG-44
The push-button ignition switch position indicator turns
on synchronizing with the push-button ignition switch
operation. But the actual ON power supply is not input.
(ACC power supply input is normal.)1. Check PDU communication circuit system 2PG-43
2. Replace PDUPG-44
The power supply changing operation is normal. But the
push-button ignition switch position indicator does not
turn on.1. Check push-button ignition switch (indicator circuit)
systemPG-41
2. Replace Intelligent Key unitBL-123
CONSULT-II display item DTC code
NO DTC IS DETECTED —
CAN COMM CIRCUIT U1000
CONTROL UNIT (CAN) U1010

PG-96
HARNESS
Revision: 2007 April2007 M35/M45
ETC3 EC Electric Throttle Control Motor
F/FOG LT Front Fog Lamp
F/PUMP EC Fuel Pump
FPCM EC Fuel Pump Control Module
FTS AT A/T Fluid Temperature Sensor Circuit
FTTS EC Fuel Tank Temperature Sensor
FUELB1 EC Fuel Injection System Function (Bank 1)
FUELB2 EC Fuel Injection System Function (Bank 2)
H/LAMP LT Headlamp
HORN WW Horn
HSEAT SE Heated Seat
I/KEY BL Intelligent Key System
I/MIRR GW Inside Mirror (Auto Anti-Dazzling Mirror)
IATS EC Intake Air Temperature Sensor
ICC ACS Intelligent Cruise Control System
ICC/BS EC ICC Brake Switch
ICC/SW EC ICC Steering Switch
ICCBOF EC ICC Brake Switch
IGNSYS EC Ignition System
ILL LT Illumination
INJECT EC Injector
IVCB1 EC Intake Valve Timing Control Solenoid Valve Bank 1
IVCB2 EC Intake Valve Timing Control Solenoid Valve Bank 2
IVCSB1 EC Intake Valve Timing Control Position Sensor Bank 1
IVCSB2 EC Intake Valve Timing Control Position Sensor Bank 2
IVTB1 EC Intake Valve Timing Control System (Bank 1)
IVTB2 EC Intake Valve Timing Control System (Bank 2)
KS EC Knock Sensor
LDW DI Lane Departure Warning System
MAFS EC Mass Air Flow Sensor
MAIN AT Main Power Supply and Ground Circuit
MAIN EC Main Power Supply and Ground Circuit
METER DI Speedometer, Tachometer, Temp., Oil and Fuel Gauges
MIL/DL EC MIL & Data Link Connector
MIRROR GW Door Mirror
MMSW AT Manual Mode Switch
NATS BL Nissan Anti-Theft System
NONDTC AT Non-Detective Items
O2H2B1 EC Heated Oxygen Sensor 2 Heater Bank 1
O2H2B2 EC Heated Oxygen Sensor 2 Heater Bank 2
O2S2B1 EC Heated Oxygen Sensor 2 Bank 1
O2S2B2 EC Heated Oxygen Sensor 2 Bank 2
P/SCKT WW Power Socket
PDU PG Power Distribution Unit Code Section Wiring Diagram Name

PG-106
HARNESS CONNECTOR
Revision: 2007 April2007 M35/M45
HARNESS CONNECTOR (LEVER LOCKING TYPE)

Lever locking type harness connectors are used on certain control units and control modules such as
ECM, ABS actuator and electric unit (control unit), etc.

Lever locking type harness connectors are also used on super multiple junction (SMJ) connectors.

Always confirm the lever is fully locked in place by moving the lever as far as it will go to ensure full con-
nection.
CAUTION:
Always confirm the lever is fully released (loosened) before attempting to disconnect or connect these
connectors to avoid damage to the connector housing or terminals.
LKIA0670E
1. Control unit with single lever
A. Fasten
B. Loosen
C. Lever2. Control unit with dual levers
A. Levers
B. Fasten
C. Loosen3. SMJ connector
A. Lever
B. Fasten
C. Loosen

PRECAUTIONS
PS-3
C
D
E
F
H
I
J
K
L
MA
B
PS
Revision: 2007 April2007 M35/M45
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.

STEERING COLUMN
PS-15
C
D
E
F
H
I
J
K
L
MA
B
PS
Revision: 2007 April2007 M35/M45
–Align rear cover cap projection (A) with the marking position (B)
of gear housing assembly.
–Install slit part of lower joint (C) aligning with the projection (A) of
rear cover cap (1). Make sure that the slit part of lower joint (C)
is aligned with projection (A) of rear cover cap (1) and the mark-
ing position (B) of gear housing assembly.

Adjust neutral position of steering angle sensor. Refer to BRC-6,
"Adjustment of Steering Angle Sensor Neutral Position" .
REMOVAL OF STEERING COLUMN ASSEMBLY
1. Set vehicle to the straight-ahead position.
2. Remove driver air bag module. Refer to SRS-42, "
DRIVER AIR BAG MODULE" .
3. Remove steering wheel. Refer to PS-12, "
Removal and Installation" .
4. Remove steering column cover. Refer to IP-10, "
INSTRUMENT PANEL ASSEMBLY" .
5. Remove combination switch & spiral cable. Refer to SRS-44, "
SPIRAL CABLE" .
6. Remove instrument driver lower panel. Refer to IP-10, "
INSTRUMENT PANEL ASSEMBLY" .
7. Remove fixing bolts of knee protector (1), then remove knee
protector (1) from vehicle.
8. Remove low tire pressure warning control unit. Refer to WT-40,
"Low Tire Pressure Warning Control Unit" .
9. Disconnect each switch connectors installed to steering column
assembly, and then disconnect harness from steering column
assembly.
10. Remove fixing bolt of upper joint (1) (steering column assembly
side).
11. Remove steering column assembly mounting bolts and nut, then
remove steering column assembly from vehicle.
SGIA1175E
SGIA1176E
SGIA1182E

RF-6
SQUEAK AND RATTLE TROUBLE DIAGNOSES
Revision: 2007 April2007 M35/M45
INSULATOR (Light foam block)
80845-71L00: 30 mm (1.18 in) thick, 30×50 mm (1.18×1.97 in)
FELT CLOTHTAPE
Used to insulate where movement does not occur. Ideal for instrument panel applications.
68370-4B000: 15×25 mm (0.59×0.98 in) pad/68239-13E00: 5 mm (0.20 in) wide tape roll
The following materials, not found in the kit, can also be used to repair squeaks and rattles.
UHMW (TEFLON) TAPE
Insulates where slight movement is present. Ideal for instrument panel applications.
SILICONE GREASE
Used in place of UHMW tape that will be visible or not fit. Will only last a few months.
SILICONE SPRAY
Use when grease cannot be applied.
DUCT TAPE
Use to eliminate movement.
CONFIRM THE REPAIR
Confirm that the cause of a noise is repaired by test driving the vehicle. Operate the vehicle under the same
conditions as when the noise originally occurred. Refer to the notes on the Diagnostic Worksheet.
Generic Squeak and Rattle TroubleshootingNIS0028U
Refer to Table of Contents for specific component removal and installation information.
INSTRUMENT PANEL
Most incidents are caused by contact and movement between:
1. The cluster lid A and instrument panel
2. Acrylic lens and combination meter housing
3. Instrument panel to front pillar garnish
4. Instrument panel to windshield
5. Instrument panel mounting pins
6. Wiring harnesses behind the combination meter
7. A/C defroster duct and duct joint
These incidents can usually be located by tapping or moving the components to duplicate the noise or by
pressing on the components while driving to stop the noise. Most of these incidents can be repaired by
applying felt cloth tape or silicon spray (in hard to reach areas). Urethane pads can be used to insulate
wiring harness.
CAUTION:
Do not use silicone spray to isolate a squeak or rattle. If you saturate the area with silicone, you
will not be able to recheck the repair.
CENTER CONSOLE
Components to pay attention to include:
1. Shifter assembly cover to finisher
2. A/C control unit and cluster lid C
3. Wiring harnesses behind audio and A/C control unit
The instrument panel repair and isolation procedures also apply to the center console.
DOORS
Pay attention to the:
1. Finisher and inner panel making a slapping noise
2. Inside handle escutcheon to door finisher
3. Wiring harnesses tapping
4. Door striker out of alignment causing a popping noise on starts and stops
Tapping or moving the components or pressing on them while driving to duplicate the conditions can isolate
many of these incidents. You can usually insulate the areas with felt cloth tape or insulator foam blocks from
the Nissan Squeak and Rattle Kit (J-43980) to repair the noise.