2008 INFINITI FX35 no start

GI-28
< SERVICE INFORMATION >
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 INCIDENTGI-29
< SERVICE INFORMATION >
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 Close the relay and probe at the solenoid. voltage; open is further down the circuit than the solenoid.
no voltage; open is between relay and solenoid (point C).
Any powered circuit can be diagnosed using the approach in the previous example.
Testing for “Shorts” in the Circuit
To simplify the discussion of shorts in the system, please refer to the following schematic.
RESISTANCE CHECK METHOD
 Disconnect the battery negative cable and remove the blown fuse.
 Disconnect all loads (SW1 open, relay disconnected and solenoid disconnected) powered through the fuse.
 Connect one probe of the DMM to the load side of the fuse terminal. Connect the other probe to a known
good ground.
 With SW1 open, check for continuity.
continuity; short is between fuse terminal and SW1 (point A).
no continuity; short is further down the circuit than SW1.
 Close SW1 and disconnect the relay. Put probes at the load side of fuse terminal and a known good ground.
Then, check for continuity.
continuity; short is between SW1 and the relay (point B).
no continuity; short is further down the circuit than the relay.
 Close SW1 and jump the relay contacts with jumper wir e. Put probes at the load side of fuse terminal and a
known good ground. Then, check for continuity.
continuity; short is between relay and solenoid (point C).
no continuity; check solenoid, retrace steps.
VOLTAGE CHECK METHOD
 Remove the blown fuse and disconnect all loads (i .e. SW1 open, relay disconnected and solenoid discon-
nected) powered through the fuse.
 Turn the ignition key to the ON or START position. Veri fy battery voltage at the battery + side of the fuse ter-
minal (one lead on the battery + terminal side of the fuse block and one lead on a known good ground).
 With SW1 open and the DMM leads across both fuse terminals, check for voltage.
voltage; short is between fuse block and SW1 (point A).
no voltage; short is further down the circuit than SW1.
 With SW1 closed, relay and solenoid disconnected and t he DMM leads across both fuse terminals, check for
voltage.
voltage; short is between SW1 and the relay (point B).
no voltage; short is further down the circuit than the relay.
 With SW1 closed, relay contacts jumped with fused jumper wire check for voltage.
voltage; short is down the circuit of the relay or between the relay and the disconnected solenoid (point C).
no voltage; retrace steps and check power to fuse block.
Ground Inspection
Ground connections are very important to the proper oper ation of electrical and electronic circuits. Ground
connections are often exposed to moisture, dirt and other corrosive elements. The corrosion (rust) can
become an unwanted resistance. This unwanted re sistance can change the way a circuit works.
Electronically controlled circuits are very sensitive to proper grounding. A loose or corroded ground can drasti-
cally affect an electronically controlled circuit. A poor or corroded ground can easily affect the circuit. Even
when the ground connection looks clean, there can be a thin film of rust on the surface.
When inspecting a ground connection follow these rules:
 Remove the ground bolt or screw.
 Inspect all mating surfaces for tarnish, dirt, rust, etc.
SGI847-A
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SQUEAK AND RATTLE TROUBLE DIAGNOSESGW-7
< SERVICE INFORMATION >
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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.
Note: 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 originallyoccurred. Refer to the notes on the Diagnostic Worksheet.
Generic Squeak and Rattle TroubleshootingINFOID:0000000001327958
Refer to Table of Contents for specific component removal and installationinformation.
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 noi se. Most of these incidents can be repaired by apply-
ing felt cloth tape or silicon spray (in hard to reach areas). Urethane pads can be used to insulate wiring har-
ness.
CAUTION:
Do not use silicone spray to isolat e a squeak or rattle. If you saturatet he 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 thecenter 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 startsand 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 ar eas with felt cloth tape or insulator foam blocks from
the Nissan Squeak and Rattle Kit (J43980) to repair the noise.
TRUNK
Trunk noises are often caused by a loose jack or loose items put intothe trunk by the owner.
In addition look for:
1. Trunk lid dumpers out of adjustment
2. Trunk lid striker out of adjustment
3. The trunk lid torsion bars knocking together
4. A loose license plate or bracket
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GW-16
< SERVICE INFORMATION >
POWER WINDOW SYSTEM
 to power window main switch terminal 19
 to front power window switch (passenger side) terminal 10.
 through 15A fuse [No. 22, located in the fuse block (J/B)]
 to BCM terminal 42.
With ignition switch in ON or START position,
Power is supplied
 through 15A fuse [No. 1, located in the fuse block (J/B)]
 to BCM terminal 38, and
 trough BCM terminal 53
 to power window main switch terminal 10
 to rear power window switch (LH and RH) terminal 1.
Ground supplied
 to BCM terminal 49 and 52
 through body grounds M35, M45 and M85.
 to power window main switch terminal 17
 through body grounds M35, M45 and M85.
 to front power window switch (passenger side) terminal 11
 through body grounds M35, M45 and M85.
MANUAL OPERATION
Front Driver Side Door
WINDOW UP
When the front LH switch in the power window main switch is pressed in the up position,
Power is supplied
 through power window main switch terminal 8
 to front power window motor (driver side) terminal 2.
Ground is supplied
 to front power window motor (driver side) terminal 1
 through power window main switch terminal 11.
Then, the motor raises the window until the switch is released.
WINDOW DOWN
When the front LH switch in the power window main switch is pressed in the down position
Power is supplied
 through power window main switch terminal 11
 to front power window motor (driver side) terminal 1.
Ground is supplied
 to front power window motor (driver side) terminal 2
 through power window main switch terminal 8.
Then, the motor lowers the window until the switch is released.
Front Passenger Side Door
FRONT POWER WINDOW SWITCH (P ASSENGER SIDE) OPERATION
WINDOW UP
When the front power window switch (pass enger side) is pressed in the up position
Power is supplied
 through front power window switch (passenger side) terminal 8
 to front power window motor (passenger side) terminal 2.
Ground is supplied
 to front power window motor (passenger side) terminal 1
 through front power window switch (passenger side) terminal 9.
Then, the motor raises the window until the switch is released.
WINDOW DOWN
When the front power window switch (passenger side) is pressed in the down position
Power is supplied
 through front power window switch (passenger side) terminal 9
 to front power window motor (passenger side) terminal 1.
Ground is supplied
 to front power window motor (passenger side) terminal 2
 through front power window switch (passenger side) terminal 8.
Then, the motor lowers the window until the switch is released.
POWER WINDOW MAIN SWITCH OPERATION
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GW-18
< SERVICE INFORMATION >
POWER WINDOW SYSTEM
The one is applied only for front doors and the other is for all doors.
POWER WINDOW SERIAL LINK
Power window main switch, front power window switch (passenger side), and BCM transmit and receive the
signal by power window serial link.
The under mentioned signal is transmitted from BCM to power window main switch and front power window
switch (passenger side)
 Keyless power window down signal.
The under mentioned signal is transmitted from power window main switch to front power window switch (pas-
senger side)
 Front passenger side door window operation signal.
 Power window control by key cylinder switch signal.
 Power window lock signal.
 Retained power operation signal.
POWER WINDOW LOCK
The power window lock is designed to lock operation of all windows except for driver side door window.
When the lock position, ground of the rear power window switches in the power window main switch is discon-
nected. The power window lock signal is transmitted to front power window switch (passenger side) by power
window serial link. This prevents t he power window motors from operating.
RETAINED POWER OPERATION
When the ignition switch is turned to the OFF position from ON or START position.
Power is supplied for 45 seconds
 through BCM terminal 53
 to power window main switch terminal 10
 to rear power window switch (LH and RH) terminals 1.
When power and ground are supplied, the BCM conti nues to be energized, and the power window can be
operated.
The retained power operation is canceled when the driver or passenger side door is opened.
RAP signal period can be changed by CONSULT-III. Refer to GW-26, "
CONSULT-III Function".
ANTI-PINCH SYSTEM
Power window main switch and front power window switch (passenger side) monitors the power window motor
operation and the power window position (full closed or other) for driver side and passenger side power win-
dow by the signals from encoder and limit switch in front power window motor (driver side and passenger
side).
When power window main switch detects inte rruption during the following close operation,
 automatic close operation when igniti on switch is in the “ON” position
 automatic close operation during retained power operation
 manual close operation during retained power operation
power window main switch or front power window swit ch (passenger side) controls each power window motor
for open and the power window will be lowered about 150 mm (5.91 in).
POWER WINDOW CONTROL BY THE KEY CYLINDER SWITCH
When ignition key switch is OFF, front power window can be opened or closed by turning the key cylinder
switch UNLOCK / LOCK position more than 1.5 second over condition.
 Power window can be opened as the door key cylinder is kept fully turning to the UNLOCK position.
 Power window can be closed as the door key cylinder is kept fully turning to the LOCK position.
The power window DOWN stops when the following operations are carried out.
 While performing open / close the window, power window is stopped at the position as the door key cylinder is placed on NEUTRAL.
 When the ignition switch is turned ON while the power window DOWN is operated.
CAN Communication System DescriptionINFOID:0000000001327964
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 s peed 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 CA N 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.
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GW-24
< SERVICE INFORMATION >
POWER WINDOW SYSTEM
Terminal and Reference Value for Power Window Main Switch
INFOID:0000000001327969
22 OR Power window serial link Input/Output IGN SW ON or power window
timer operating.
38 W/L Ignition switch
(ON or START) InputIgnition switch
(ON or START position) Battery voltage
39 L CAN - H Input/Output — —
40 P CAN - L Input/Output — —
42 L/R Power source (Fuse) Input — Battery voltage
49 B Ground (signal) — — 0
52 B Ground (power) — — 0
53 Y/B Rap signal Output IGN SW ON Battery voltage
Within 45 second after ignition
switch is turned to OFF
Battery voltage
When driver side or passen-
ger side door is open in power
window timer is operates 0
54 W Power window power supply Output — Battery voltage
55 G Power source
(Fusible link)
Input — Battery voltage
62 W Front door switch
driver side signal InputON (Open) 0
OFF (Close) Battery voltage
Te r -
minal Wire
color Item Signal
Input/Output Condition Voltage [V]
(Approx.)
PIIA2344J
Te r -
minal Wire
color Item Signal
Input/Output Condition Voltage [V]
(Approx.)
1Y Rear LH power window
UP signal OutputWhen rear LH switch in
power window main switch is
UP at operated. Battery voltage
2SB Limit switch and encoder
ground —— 0
3R Rear LH power window
DOWN signal OutputWhen rear LH switch in
power window main switch is
DOWN at operated. Battery voltage
4P Door key cylinder switch
LOCK signal InputKey position
(Neutral
→ Locked) 5
→ 0
5G Rear RH power window
DOWN signal OutputWhen rear RH switch in
power window main switch is
DOWN at operated. Battery voltage
6OR Door key cylinder switch
UNLOCK signal Input
Key position
(Neutral
→ Unlocked) 5
→ 0
7LG Rear RH power window
UP signal OutputWhen rear RH switch in
power window main switch is
UP at operated. Battery voltage
8L Front driver side
power window motor UP signal
OutputWhen front LH switch in
power window main switch is
UP at operated
Battery voltage
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GW-60
< SERVICE INFORMATION >
REAR WINDOW DEFOGGER
REAR WINDOW DEFOGGER
Component Parts and Harness Connector LocationINFOID:0000000001327998
System DescriptionINFOID:0000000001327999
The rear window defogger system is controlled by BC M (Body Control Module) and IPDM E/R (Intelligent
Power Distribution Module Engine Room).
The rear window defogger operates only for approximately 15 minutes.
Power is at all times supplied
 through 20A fuse [No. 75, located in the IPDM E/R]
 to rear window defogger relay terminals 3,
 through 20A fuse [No. 80, located in the IPDM E/R]
 to rear window defogger relay terminals 6,
 through 15A fuse [No. 32, located in the fuse block (J/B)]
 to A/C and AV switch terminal 1,
 through 50A fusible link (letter M, located in the fuse and fusible link box)
 to BCM terminal 55,
 through 15A fuse [No. 22, located in the fuse block (J/B)]
 to BCM terminal 42.
With the ignition switch turned to ON or START position,
Power is supplied
 through 15A fuse [No. 1, located in the fuse block (J/B)]
 to BCM terminal 38.
 through 10A fuse [No. 12, located in the fuse block]
 to rear window defogger relay terminal 1,
Ground is supplied
 to BCM terminal 49 and 52
1. a: Fusible link 50A letter M
b: Fuse 15A No.32 2. a: Fuse block (J/B) M1, M2, E201
b: BCM M3, M4 3. IPDM E/R E4, E8, E9
4. Rear window defogger relay E13 5. A/C and AV switch M64 (Rear window defogger switch)6. a: Rear window defogger D104
b: Rear window defogger D114
PIIB8568E
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REAR WINDOW DEFOGGERGW-67
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Terminal and Reference Value for BCMINFOID:0000000001328004
Terminal and Reference Value for IPDM E/RINFOID:0000000001328005
CONSULT-III Function (BCM)INFOID:0000000001328006
DATA MONITOR
ACTIVE TEST
Te r m i n a l Wire col-
or ItemSignal In-
put/
Output Condition
Voltage (V)
(Approx.)
9L/W Rear window defogger
switch signal InputWhen rear window defogger switch is
pressed.
0
When rear window defogger switch is OFF. 5
38 W/L Ignition switch ON or START Input Ignition switch (ON or START position) Battery voltage
39 L CAN − H Input/
Output ——
40 P CAN − L Input/
Output ——
42 L/R Power source (Fuse) Input — Battery voltage
49 B Ground (signal) — — 0
52 B Ground (power) — — 0
55 G Power source (Fusible link) Input — Battery voltage
Te r m i n a l Wire col-
or Item Signal
Input/
Output Condition
Voltage (V)
(Approx.)
5 R Battery power supply Output — Battery voltage
6 W Battery power supply Output — Battery voltage
38 B Ground (Power) — — 0
48 L CAN − H Input/
Output ——
49 R CAN − L Input/
Output ——
52 G Rear window defogger relay
control signal
InputWhen rear window defogger switch is ON. 0
When rear window defogger switch is
OFF.
Battery voltage
60 B Ground (Signal) — — 0
BCM diagnostic test item Check item diagnostic test mode Content
REAR DEFOGGER Data monitor Displays the input data of BCM in real time.
Active test Gives a drive signal to a load to check the operation.
Monitor item Content
REAR DEF SW Displays “Press (ON)/others (OFF)” status determined with the rear window defogger switch.
IGN ON SW Displays “IGN (ON)/OFF” status determined with the ignition switch signal.
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