section pg INFINITI FX35 2008 Owners Manual

HOW TO USE THIS MANUALGI-17
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Harness Indication
14 Wire color  This shows a code for the color of the wire.
B = Black
W = White
R = Red
G = Green
L = Blue
Y = Yellow
LG = Light Green BR = Brown
OR or O = Orange
P = Pink
PU or V (Violet) = Purple
GY or GR = Gray
SB = Sky Blue
CH = Dark Brown
DG = Dark Green
When the wire color is striped, the base color is given first, followed by the stripe color as shown
below:
Example: L/W = Blue with White Stripe
15 Option description  This shows a description of the option abbreviation used on the page.
16 Switch  This shows that continuity exists between terminals 1 and 2 when the switch is in the A posi-
tion. Continuity exists between terminals 1 and 3 when the switch is in the B position.
17 Assembly parts  Connector terminal in component shows that it is a harness incorporated assembly.
18 Cell code  This identifies each page of the wiring diagram by section, system and wiring diagram page
number.
19 Current flow arrow  Arrow indicates electric current flow, especially where the direction of standard flow (vertically
downward or horizontally from left to right) is difficult to follow.
 A double arrow “ ” shows that current can flow in either direction depending on circuit operation.
20 System branch  This shows that the system branches to another system identified by cell code (section and
system).
21 Page crossing  This arrow shows that the circuit continues to another page identified by cell code.
 The C will match with the C on another page within the system other than the next or preceding
pages.
22 Shielded line  The line enclosed by broken line circle shows shield wire.
23 Component box in
wave line  This shows that another part of the component is also shown on another page (indicated by
wave line) within the system.
24 Component name  This shows the name of a component.
25 Connector number  This shows the connector number.
 The letter shows which harness the connector is located in.
Example:
M: main harness. For detail and to locate the connector, refer to PG section "Main
Harness", “Harness Layout”. A coordinate grid is included for complex harnesses to aid in lo-
cating connectors.
26 Ground (GND)  The line spliced and grounded under wire color shows that ground line is spliced at the ground-
ed connector.
27 Ground (GND)  This shows the ground connection. For detailed ground distribution information, refer to
"Ground Distribution" in PG section.
28 Connector views  This area shows the connector faces of the components in the wiring diagram on the page.
29 Common component  Connectors enclosed in broken line show that these connectors belong to the same compo-
nent.
30 Connector color  This shows a code for the color of the connector. For code meaning, refer to wire color codes,
Number 14 of this chart.
31 Fusible link and fuse
box  This shows the arrangement of fusible link(s) and fuse(s), used for connector views of "POW-
ER SUPPLY ROUTING" in PG section.
The open square shows current flow in, and the shaded square shows current flow out.
32 Reference area  This shows that more information on the Super Multiple Junction (SMJ) and Joint Connectors
(J/C) exists on the PG section. Refer to "Reference Area" for details.
Num-
ber Item Description
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SERVICE INFORMATION FOR ELECTRICAL INCIDENTGI-25
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How to Perform Efficient Diagnos is for an Electrical IncidentINFOID:0000000001325672
WORK FLOW
INCIDENT SIMULATION TESTS
Introduction
Sometimes the symptom is not present when the vehicle is brought in for service. If possible, re-create the
conditions present at the time of the incident. Doi ng so may help avoid a No Trouble Found Diagnosis. The fol-
lowing section illustrates ways to simulate the c onditions/environment under which the owner experiences an
electrical incident.
The section is broken into the six following topics:
 Vehicle vibration
 Heat sensitive
 Freezing
 Water intrusion
 Electrical load
SGI838
STEP DESCRIPTION
STEP 1 Get detailed information about the conditions and the environment when the incident occurred.
The following are key pieces of information required to make a good analysis:
WHAT
Vehicle Model, Engine, Transmission/Transaxle and the System (i.e. Radio).
WHEN Date, Time of Day, Weather Conditions, Frequency.
WHERE Road Conditions, Altitude and Traffic Situation.
HOW System Symptoms, Operating Conditions (Other Components Interaction).
Service History and if any After Market Accessories have been installed.
STEP 2 Operate the system, road test if necessary.
Verify the parameter of the incident.
If the problem cannot be duplicated, refer to “Incident Simulation Tests”.
STEP 3 Get the proper diagnosis materials together including:
 Power Supply Routing
 System Operation Descriptions
 Applicable Service Manual Sections
 Check for any Service Bulletins
Identify where to begin diagnosis based upon your knowledge of the system operation and the customer comments.
STEP 4 Inspect the system for mechanical binding, loose connectors or wiring damage.
Determine which circuits and components are involved and diagnose using the Power Supply Routing and Harness Lay-
outs.
STEP 5 Repair or replace the incident circuit or component.
STEP 6 Operate the system in all modes. Verify the system works properly under all conditions. Make sure you have not inad-
vertently created a new incident during your diagnosis or repair steps.
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GI-28
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SERVICE INFORMATION FOR ELECTRICAL INCIDENT
ough understanding of system operation. Then you will be able to use the appropriate equipment and follow
the correct test procedure.
You may have to simulate vehicle vibrations while test ing electrical components. Gently shake the wiring har-
ness or electrical component to do this.
NOTE:
Refer to “How to Check Terminal” to probe or check terminal.
Testing for “Opens” in the Circuit
Before you begin to diagnose and test the system, you should rough sketch a schematic of the system. This
will help you to logically walk through the diagnosis process. Drawing the sketch will also reinforce your work-
ing knowledge of the system.
CONTINUITY CHECK METHOD
The continuity check is used to find an open in the circ uit. The digital multimeter (DMM) set on the resistance
function will indicate an open circuit as over limit (no beep tone or no ohms symbo\
l). Make sure to always start
with the DMM at the highest resistance level.
To help in understanding the diagnosis of open circui ts, please refer to the previous schematic.
 Disconnect the battery negative cable.
 Start at one end of the circuit and work your way to the other end. (At the fuse block in this example)
 Connect one probe of the DMM to the fuse block terminal on the load side.
 Connect the other probe to the fuse block (power) side of SW1. Little or no resistance will indicate that por-
tion of the circuit has good continuity. If there were an open in the circuit, the DMM would indicate an over
limit or infinite resistance condition. (point A)
 Connect the probes between SW1 and the relay. Little or no resistance will indicate that portion of the circuit
has good continuity. If there were an open in the circuit, t he DMM would indicate an over limit or infinite resis-
tance condition. (point B)
 Connect the probes between the relay and the solenoid. Little or no resistance will indicate that portion of the
circuit has good continuity. If there were an open in the ci rcuit, the DMM would indicate an over limit or infi-
nite resistance condition. (point C)
Any circuit can be diagnosed using the approach in the previous example.
VOLTAGE CHECK METHOD
To help in understanding the diagnosis of open circui ts please refer to the previous schematic.
In any powered circuit, an open can be found by methodica lly checking the system for the presence of voltage.
This is done by switching the DMM to the voltage function.
 Connect one probe of the DMM to a known good ground.
 Begin probing at one end of the circuit and work your way to the other end.
 With SW1 open, probe at SW1 to check for voltage.
voltage; open is further down the circuit than SW1.
no voltage; open is between fuse block and SW1 (point A).
 Close SW1 and probe at relay.
voltage; open is further down the circuit than the relay.
no voltage; open is between SW1 and relay (point B).
OPEN A circuit is open when there is no continuity through a section of the circuit.
SHORT There are two types of shorts.
 SHORT CIRCUIT
When a circuit contacts another circuit and causes the normal resistance to
change.
 SHORT TO GROUND When a circuit contacts a ground source and grounds the circuit.
SGI846-A
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SERVICE INFORMATION FOR ELECTRICAL INCIDENT
 Clean as required to assure good contact.
 Reinstall bolt or screw securely.
 Inspect for “add-on” accessories which may be interfering with the ground circuit.
 If several wires are crimped into one ground eyelet terminal, check for proper crimps. Make sure all of thewires are clean, securely fastened and providing a good ground path. If multiple wires are cased in one eye-
let make sure no ground wires have excess wire insulation.
For detailed ground distribution information, re fer to “Ground Distribution” in PG section.
Voltage Drop Tests
Voltage drop tests are often used to find components or circuits which have excessive resistance. A voltage
drop in a circuit is caused by a resistance when the circuit is in operation.
Check the wire in the illustration. When measuring resist ance with DMM, contact by a single strand of wire will
give reading of 0 ohms. This would indicate a good circui t. When the circuit operates, this single strand of wire
is not able to carry the current. The single strand will have a high resistance to the current. This will be picked
up as a slight voltage drop.
Unwanted resistance can be caused by many situations as follows:
 Undersized wiring (single strand example)
 Corrosion on switch contacts
 Loose wire connections or splices.
If repairs are needed always use wire that is of the same or larger gauge.
MEASURING VOLTAGE DROP — ACCUMULATED METHOD
 Connect the DMM across the connector or part of the ci rcuit you want to check. The positive lead of the
DMM should be closer to power and the negative lead closer to ground.
 Operate the circuit.
 The DMM will indicate how many volts are being used to “push” current through that part of the circuit.
SGI853
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GLASSES, WINDOW SYSTEM & MIRRORS
SERVICE INFORMATION .. ..........................3
PRECAUTIONS .............................................. .....3
Precaution for Supplemental Restraint System
(SRS) "AIR BAG" and "SEAT BELT PRE-TEN-
SIONER" ............................................................. ......
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Precaution for Procedure without Cowl Top Cover ......3
Handling for Adhesive and Primer ............................3
PREPARATION ...................................................4
Special Service Tool ........................................... ......4
Commercial Service Tool ..........................................4
SQUEAK AND RATTLE TROUBLE DIAG-
NOSES ................................................................
5
Work Flow ........................................................... ......5
Generic Squeak and Rattle Troubleshooting ............7
Diagnostic Worksheet ...............................................9
WINDSHIELD GLASS ........................................11
Removal and Installation ..................................... ....11
BACK DOOR WINDOW GLASS ........................13
Removal and Installation ..................................... ....13
POWER WINDOW SYSTEM ..............................15
Component Parts and Harness Connector Loca-
tion ...................................................................... ....
15
System Description .................................................15
CAN Communication System Description ...............18
CAN Communication Unit .......................................19
Schematic ...............................................................19
Wiring Diagram - WINDOW - ..................................20
Terminal and Reference Value for BCM .................23
Terminal and Reference Value for Power Window
Main Switch .............................................................
24
Terminal and Reference Value for Front Power
Window Switch (Passenger Side) ...........................
25
CONSULT-III Function ............................................26
Work Flow ...............................................................27
Trouble Diagnosis Symptom Chart .........................27
Check BCM Power Supply and Ground Circuit .......28
Check Power Window Main Switch Power Supply
Circuit .................................................................. ....
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Check Front Power Window Switch (Passenger
Side) Power Supply and Ground Circuit ..................
30
Check Front Power Window Motor (Driver Side)
Circuit ......................................................................
30
Check Front Power Window Motor (Passenger
Side) Circuit .............................................................
31
Check rear Power Window Motor (LH) Circuit .........32
Check Rear Power Window Motor (RH) Circuit .......34
Check Limit Switch Circuit (Driver Side) .............. ....36
Check Limit Switch Circuit (Passenger Side) ..........37
Check Encoder Circuit (Driver Side) ........................39
Check Encoder Circuit (Passenger Side) ................40
Check Door Switch ..................................................42
Check Front Door Key Cylinder Switch ...................43
Check Power Window Serial Link (Passenger
Side) ........................................................................
45
Check Power Window Lock Switch .........................46
SIDE WINDOW GLASS ....................................48
Removal and Installation .........................................48
FRONT DOOR GLASS AND REGULATOR .....50
Removal and Installation .........................................50
Disassembly and assembly .....................................52
Inspection after Installation ......................................52
REAR DOOR GLASS AND REGULATOR .......54
Removal and Installation .........................................54
Disassembly and assembly .....................................56
Fitting Inspection .....................................................56
INSIDE MIRROR ...............................................57
Wiring Diagram - I/MIRR - .......................................57
Removal and Installation .........................................58
REAR WINDOW DEFOGGER ..........................60
Component Parts and Harness Connector Loca-
tion ...........................................................................
60
System Description ..................................................60
CAN Communication System Description ...............61
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INSTRUMENT PANEL
SERVICE INFORMATION .. ..........................2
PRECAUTIONS .............................................. .....2
Precaution for Supplemental Restraint System
(SRS) "AIR BAG" and "SEAT BELT PRE-TEN-
SIONER" ............................................................. ......
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Precaution .................................................................2
PREPARATION ...................................................3
Special Service Tool ........................................... ......3
Commercial Service Tool ..........................................3
SQUEAK AND RATTLE TROUBLE DIAG-
NOSES ...............................................................
4
Work Flow ............................................................ .....4
Generic Squeak and Rattle Troubleshooting ............6
Diagnostic Worksheet ...............................................8
INSTRUMENT PANEL ASSEMBLY .................10
Component Parts Location ......................................10
Removal and Installation .........................................11
Disassembly and Assembly .....................................16
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LAN-1
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LAN SYSTEM
CAN FUNDAMENTAL
SERVICE INFORMATION .. ..........................
3
PRECAUTIONS .............................................. .....3
Precaution for Trouble Diagnosis ........................ ......3
Precaution for Harness Repair ..................................3
SYSTEM DESCRIPTION .....................................4
CAN Communication System .............................. ......4
Diag on CAN .............................................................5
TROUBLE DIAGNOSIS ......................................7
Condition of Error Detection ................................ ......7
Symptom When Error Occurs in CAN Communi-
cation System ...................................................... ......
7
Self-Diagnosis .........................................................10
CAN Diagnostic Support Monitor ............................10
TROUBLE DIAGNOSES WORK FLOW ............13
Information Needed for Trouble Diagnosis ......... ....13
How to Use CAN Communication Signal Chart ......13
Trouble Diagnosis Flow Chart .................................14
Trouble Diagnosis Procedure ..................................14
CAN
SERVICE INFORMATION .. .........................
36
INDEX FOR DTC ............................................ ....36
DTC No. Index .................................................... ....36
HOW TO USE THIS SECTION ...........................37
Caution ................................................................ ....37
Abbreviation List ......................................................37
PRECAUTIONS ..................................................38
Precaution for Supplemental Restraint System
(SRS) "AIR BAG" and "SEAT BELT PRE-TEN-
SIONER" ............................................................. ....
38
Precaution for Trouble Diagnosis ............................38
Precaution for Harness Repair ................................38
TROUBLE DIAGNOSIS ....................................39
CAN Diagnostic Support Monitor ......................... ....39
CAN System Specification Chart .............................43
CAN Communication Signal Chart ..........................44
Schematic ................................................................54
Wiring Diagram - CAN - ...........................................55
Interview Sheet ........................................................58
Data Sheet ...............................................................58
CAN System (Type 1) ..............................................60
CAN System (Type 2) ..............................................61
CAN System (Type 3) ..............................................62
CAN System (Type 4) ..............................................63
CAN System (Type 5) ..............................................64
CAN System (Type 6) ..............................................65
CAN System (Type 7) ..............................................66
CAN system (Type 8) ..............................................67
Component Parts Location ......................................68
Harness Layout .......................................................68
Malfunction Area Chart ............................................68
Main Line Between TCM and Data Link Connector
....
69
Main Line Between Data Link Connector and Uni-
fied Meter and A/C Amp. .........................................
69
Main Line Between Unified Meter and A/C Amp.
and ABS Actuator and Electric Unit (Control Unit) ....
70
Main Line Between ABS Actu ator and Electric Unit
(Control Unit) and Driver Seat Control Unit .............
71
ECM Branch Line Circuit ..................................... ....72
AWD Control Unit Branch Line Circuit .....................72
Display Control Unit Branch Line Circuit .................73
ICC Unit Branch Line Circuit ................................ ....74
TCM Branch Line Circuit .........................................74
BCM Branch Line Circuit .........................................75
Data Link Connector Branch Line Circuit ................75
Intelligent Key Unit Branch Line Circuit ...................76
LDW Camera Unit Branch Line Circuit ....................76
Steering Angle Sensor Branch Line Circuit .............77
Unified Meter and A/C Amp. Branch Line Circuit ....78
ABS Actuator and Electric Unit (Control Unit)
Branch Line Circuit ..................................................
78
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TROUBLE DIAGNOSES WORK FLOWLAN-15
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 Result: Symptom
NOTE:
 Check normal units as well as error symptoms.
- Example: Circuit between ECM and the combination meter is judged normal if the customer indicates tachometer functions normally.
 When a CAN communication system error is present, mult iple control units may malfunction or go into fail-
safe mode.
 Indication of the combination meter is important to det ect the root cause because it is the most obvious to
the customer, and it performs CA N communication with many units.
INSPECTION OF VEHICLE CONDITION
 Check whether or not “U1000” or “U1001” is indi cated on “SELF-DIAG RESULTS” by CONSULT-III.
NOTE:
Root cause cannot be detected using the procedure in this section if “U1000” or “U1001” is not indicated.
 Check whether the symptom is reproduced or not.
NOTE:
 Do not turn the ignition switch OFF or disconnect the battery cable while reproducing the error. The error may temporarily correct itself, making it difficult to determine the root cause.
 The procedures for present errors differ from the procedures for past errors. Refer to "DETECT THE
ROOT CAUSE".
CHECK OF CAN SYSTEM TYPE (HOW TO US E CAN SYSTEM TYPE SPECIFICATION CHART)
Determine CAN system type based on vehicle equipm ent. Then choose the correct diagnosis sheet.
NOTE:
There are two styles for CAN system type specificat ion charts. Depending on the number of available system
types, either style A or style B may be used.
CAN System Type Specification Chart (Style A)
NOTE:
SKIB8717E
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HOW TO USE THIS SECTIONLAN-37
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HOW TO USE THIS SECTION
CautionINFOID:0000000001328628
 This section describes information peculiar to a v ehicle, sheets for trouble diagnosis, and inspection proce-
dures.
 For trouble diagnosis procedure LAN-14, "
Trouble Diagnosis Procedure".
Abbreviation ListINFOID:0000000001328629
Abbreviations in CAN communication signal chart, and the diagnosis sheet are as per the following list.
Abbreviation Unit name SELECT SYSTEM
(CONSULT-III) CAN DIAG SUPPORT MNTR
(CONSULT-III)
4WD AWD control unit ALL MODE AWD/4WD AWD/4WD
A-BAG Air bag diagnosis sensor unit AIR BAG – ABS ABS actuator and electric un it (control unit) ABS VDC/TCS/ABS
ADP Driver seat control unit AUTO DRIVE POS. –
BCM BCM BCM BCM/SEC
DISP Display control unit – DISPLAY DLC Data link connector – –
ECM ECM ENGINE ECM
ICC ICC unit ICC ICC
ICC/e4WD
I-KEY Intelligent Key unit INTELLIGENT KEY I-KEY
IPDM-E IPDM E/R IPDM E/R IPDM E/R LANE LDW camera unit LDW –
LASER ICC sensor – ICC SENSOR M&A Unified meter and A/C amp. METER/M&A METER/M&A
STRG Steering angle sensor – STRG TCM TCM TRANSMISSION TCM
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LT-1
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LIGHTING SYSTEM
SERVICE INFORMATION .. ..........................4
PRECAUTIONS .............................................. .....4
Precaution for Supplemental Restraint System
(SRS) "AIR BAG" and "SEAT BELT PRE-TEN-
SIONER" ............................................................. ......
4
General Precaution for Service Operation ................4
HEADLAMP - XENON TYPE - ............................5
Component Parts and Harness Connector Loca-
tion ...................................................................... ......
5
System Description ...................................................5
CAN Communication System Description .................7
CAN Communication Unit .........................................7
Schematic .................................................................8
Wiring Diagram - H/LAMP - .......................................9
Terminal and Reference Value for BCM .................12
Terminal and Reference Value for IPDM E/R .........14
How to Proceed with Trouble Diagnosis .................14
Preliminary Check ...................................................15
CONSULT-III Functions (BCM) ...............................16
CONSULT-III Functions (IPDM E/R) .......................17
Headlamp Does Not Change To High Beam (Both
Sides) ......................................................................
18
Headlamp Does Not Change To High Beam (One
Side) ........................................................................
20
Headlamp Low Beam Does Not Illuminate (Both
Sides) .................................................................. ....
21
Headlamp Low Beam Does Not Illuminate (One
Side) .................................................................... ....
23
Headlamp RH Low Beam and High Beam Does
Not Illuminate ..........................................................
24
Headlamp LH Low Beam and High Beam Does
Not Illuminate ..........................................................
25
Headlamps Does Not Turn OFF .............................26
General Information for Xenon Headlamp Trouble
Diagnosis ................................................................
26
Caution: ...................................................................26
Xenon Headlamp Trouble Diagnosis ......................27
Aiming Adjustment ..................................................27
Bulb Replacement ...................................................28
Removal and Installation ..................................... ....30
Disassembly and Assembly .....................................30
DAYTIME LIGHT SYSTEM ...............................32
Component Parts and Harness Connector Loca-
tion ....................................................................... ....
32
System Description ..................................................32
CAN Communication System Description ...............33
CAN Communication Unit ........................................33
Schematic ................................................................34
Wiring Diagram - DTRL - .........................................35
Terminal and Reference Value for BCM ..................38
How to Proceed with Trouble Diagnosis ..................41
Preliminary Check ...................................................41
CONSULT-III Functions (BCM) ...............................43
Daytime Light Control Does Not Operate Properly ....44
Aiming Adjustment ...................................................46
Bulb Replacement ...................................................46
Removal and Installation .........................................46
Disassembly and Assembly .....................................46
AUTO LIGHT SYSTEM .....................................47
Component Parts and Harness Connector Loca-
tion ...........................................................................
47
System Description ..................................................47
CAN Communication System Description ...............48
CAN Communication Unit ........................................48
Major Component and Functions ............................48
Schematic ................................................................49
Wiring Diagram - AUTO/L - .....................................50
Terminal and Reference Value for BCM ..................52
Terminal and Reference Value for IPDM E/R ..........54
How to Proceed with Trouble Diagnosis ..................54
Preliminary Check ...................................................55
CONSULT-III Functions (BCM) ...............................56
CONSULT-III Functions (IPDM E/R) .......................57
Symptom Chart ........................................................58
Lighting Switch Inspection .......................................58
Optical sensor System Inspection ...........................59
Removal and Installation of Optical Sensor .............60
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