ECU INFINITI M35 2007 Factory Service Manual

SB-14
PRE-CRASH SEAT BELT
Revision: 2007 April2007 M35/M45
CONSULT-II Function (PRECRASH SEATBELT)NHS00085
CONSULT-II can display each diagnostic item using the diagnostic test modes shown following.
CONSULT-II START PROCEDURE
Refer to GI-38, "CONSULT-II Start Procedure" .
HOW TO READ SELF-DIAGNOSTIC RESULTS
SELF-DIAGNOSTIC RESULTS ITEM CHART
DATA MONITOR ITEM CHART
CONSULT-II
diagnosis itemsInspection item
self-diagnosis modeContentReference
page
PRECRASH
SEATBELTSELF–DIAG RESULTS Carries out the self-diagnosis.SB-14
DATA MONITOR Displays pre-crash seat belt control unit input data in real time.SB-14
CAN DIAG SUPPORT MNTRThe results of transmit / receive diagnosis of CAN communication
can be read.LAN-44
ECU PART NUMBER Displays pre-crash seat belt control unit part No. —
PHIA1176E
DTCSelf-diagnosis item
(CONSULT-II indication)DTC detection conditionReference
page
U1000 CAN COMM CIRCUITWhen pre-crash seat belt control unit is not transmitting or receiving CAN
communication signal for 2 seconds or more. SB-15
B2451 SB MOTOR RH CIRC Circuit of seat belt motor (RH) is open or shorted.SB-26
B2452 SB MOTOR LH CIRC Circuit of seat belt motor (LH) is open or shorted.SB-24
B2453 BR STROKE SEN CIRC Circuit of brake pedal stroke sensor is open or shorted.SB-21
B2454 MOTOR PWR SUP CIRC Circuit of motor power supply is open or shorted.SB-16
B2455 PSB C/U INT CIRC ECU circuit internal abnormality —
Monitor item [OPERATION or UNIT] Contents
SB SW RH SIG “ON/OFF” RH seat belt switch signal is displayed.
SB SW LH SIG “ON/OFF” LH seat belt switch signal is displayed.
VHCL SPEED SE “Km/h” Vehicle speed signal is displayed.
B PEDAL SIG1 “V” Brake pedal stroke sensor 1 signal voltage is displayed.
B PEDAL SIG 2 “V” Brake pedal stroke sensor 2 signal voltage is displayed.

SB-32
SEAT BELTS
Revision: 2007 April2007 M35/M45
INSTALLATION OF SEAT BELT BUCKLE

Install in the reverse order of removal.

Tighten by specified torque.
Seat Belt InspectionNHS0008L
AFTER A COLLISION
WARNING:
Inspect all seat belt assemblies including retractors and attaching hardware after any collision.
NISSAN / INFINITI recommends that all seat belt assemblies in use during a collision be replaced
unless the collision was minor and the belts show no damage and continue to operate properly. Fail-
ure to do so could result in serious personal injury in an accident. Seat belt assemblies not in use dur-
ing a collision should also be replaced if either damage or improper operation is noted. Seat belt pre-
tensioned should be replaced even if the seat belts are not in use during a frontal collision in which
the air bags are deployed.
Replace any seat belt assembly (including anchor bolts) if:

The seat belt was in use at the time of a collision (except for minor collisions and the belts, retractors and
buckles show no damage and continue to operate properly).

The seat belt was damaged in an accident. (i.e. torn webbing, bent retractor or guide, etc.)

The seat belt attaching point was damaged in an accident. Inspect the seat belt attaching area for damage
or distortion and repair as necessary before installing a new seat belt assembly.

Anchor bolts are deformed or worn out.

The seat belt pre-tensioner should be replaced even if the seat belts are not in use during the collision in
which the air bags are deployed.
PRELIMINARY CHECKS
1. Check the seat belt warning lamp/chime for proper operation as follows:
a. Switch ignition ON. The seat belt warning lamp should illuminate. Also, the seat belt warning chime should
sound for about six seconds.
b. Fasten driver's seat belt. The seat belt warning lamp should go out and the chime (if sounding) should
stop.
2. If the air bag warning lamp is blinking, conduct self-diagnosis using CONSULT-II, and air bag warning
lamp. Refer to SRS-20, "
SRS Operation Check" .
3. Check that the seat belt retractor, seat belt anchor and buckle bolts are securely attached.
4. Check the shoulder seat belt guide and shoulder belt height adjuster for front seats. Ensure guide swivels
freely and that webbing lays flat and does not bind in guide. Ensure height adjuster operates properly and
holds securely.
5. Check retractor operation:
a. Fully extend the seat belt webbing and check for twists, tears or other damage.
b. Allow the seat belt to retract. Ensure that webbing returns smoothly and completely into the retractor. If
the seat belt does not return smoothly, wipe the inside of the loops with a clean paper cloth. Because dirt
built up in the loops of the upper anchors can cause the seat belts to retract slowly.
c. Fasten the seat belt. Check the seat belt returns smoothly and completely to the retractor. If the webbing
does not return smoothly, the cause may be an accumulation of dust or dirt. Use the “SEAT BELT TAPE
SET” and perform the following steps.
Inspect the front seat belt though-anchor
1. Pull the seat belt out to a length of 500 mm (19.69 in) or more.
2. Use a clip or other device to the fix the seat belt at the center pillar webbing opening.
3. Pass a thin wire though the though-anchor webbing opening. Hold both ends of the wire and pull it
tantly while moving it up and down several times along the webbing opening surface to move matter
stuck there.
4. Any dirt that can not be removed with the wire can be removed by cleaning the opening with a clean
cloth.
5. Apply tape at the point where the webbing contacts the though-anchor webbing opening. Tightening torque : 49.0 N·m (5.0 kg-m, 36 ft-lb)

PRECAUTIONS
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Revision: 2007 April2007 M35/M45
PRECAUTIONSPFP:00001
Precautions for Supplemental Restraint System (SRS) “AIR BAG” and “SEAT
BELT PRE-TENSIONER”
NIS0025I
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.
Service NoticeNIS0025J

When removing or installing various parts, place a cloth or padding onto the vehicle body to prevent
scratches.

Handle trim, molding, instruments, grille, etc. carefully during removing or installing. Be careful not to oil or
damage them.

Apply sealing compound where necessary when installing parts.

When applying sealing compound, be careful that the sealing compound does not protrude from parts.

When replacing any metal parts (for example body outer panel, members, etc.), be sure to take rust pre-
vention measures.
Precautions for WorkNIS0025K

When removing or disassembling each component, be careful not to damage or deform it. If a component
may be subject to interference, be sure to protect it with a shop cloth.

When removing (disengaging) components with a screwdriver or similar tool, be sure to wrap the compo-
nent with a shop cloth or vinyl tape to protect it.

Protect the removed parts with a shop cloth and keep them.

Replace a deformed or damaged clip.

If a part is specified as a non-reusable part, always replace it with new one.

Be sure to tighten bolts and nuts securely to the specified torque.

After re-installation is completed, be sure to check that each part works normally.

Follow the steps below to clean components.
–Water soluble foul: Dip a soft cloth into lukewarm water, and wring the water out of the cloth to wipe the
fouled area.
Then rub with a soft and dry cloth.
–Oily foul: Dip a soft cloth into lukewarm water with mild detergent (concentration: within 2 to 3%), and wipe
the fouled area.
Then dip a cloth into fresh water, and wring the water out of the cloth to wipe the detergent off. Then rub
with a soft and dry cloth.

Do not use organic solvent such as thinner, benzene, alcohol, and gasoline.

For genuine leather seats, use a genuine leather seat cleaner.

SE-6
SQUEAK AND RATTLE TROUBLE DIAGNOSES
Revision: 2007 April2007 M35/M45
DUPLICATE THE NOISE AND TEST DRIVE
If possible, drive the vehicle with the customer until the noise is duplicated. Note any additional information on
the Diagnostic Worksheet regarding the conditions or location of the noise. This information can be used to
duplicate the same conditions when you confirm the repair.
If the noise can be duplicated easily during the test drive, to help identify the source of the noise, try to dupli-
cate the noise with the vehicle stopped by doing one or all of the following:
1) Close a door.
2) Tap or push/pull around the area where the noise appears to be coming from.
3) Rev the engine.
4) Use a floor jack to recreate vehicle “twist”.
5) At idle, apply engine load (electrical load, half-clutch on M/T models, drive position on A/T models).
6) Raise the vehicle on a hoist and hit a tire with a rubber hammer.

Drive the vehicle and attempt to duplicate the conditions the customer states exist when the noise occurs.

If it is difficult to duplicate the noise, drive the vehicle slowly on an undulating or rough road to stress the
vehicle body.
CHECK RELATED SERVICE BULLETINS
After verifying the customer concern or symptom, check ASIST for Technical Service Bulletins (TSBs) related
to that concern or symptom.
If a TSB relates to the symptom, follow the procedure to repair the noise.
LOCATE THE NOISE AND IDENTIFY THE ROOT CAUSE
1. Narrow down the noise to a general area. To help pinpoint the source of the noise, use a listening tool
(Chassis Ear: J-39570, Engine Ear and mechanics stethoscope).
2. Narrow down the noise to a more specific area and identify the cause of the noise by:

removing the components in the area that you suspect the noise is coming from.
Do not use too much force when removing clips and fasteners, otherwise clips and fastener can be broken
or lost during the repair, resulting in the creation of new noise.

tapping or pushing/pulling the component that you suspect is causing the noise.
Do not tap or push/pull the component with excessive force, otherwise the noise will be eliminated only
temporarily.

feeling for a vibration with your hand by touching the component(s) that you suspect is (are) causing the
noise.

placing a piece of paper between components that you suspect are causing the noise.

looking for loose components and contact marks.
Refer to SE-7, "
Generic Squeak and Rattle Troubleshooting" .
REPAIR THE CAUSE

If the cause is a loose component, tighten the component securely.

If the cause is insufficient clearance between components:
–separate components by repositioning or loosening and retightening the component, if possible.
–insulate components with a suitable insulator such as urethane pads, foam blocks, felt cloth tape or ure-
thane tape. A Nissan Squeak and Rattle Kit (J-43980) is available through your authorized Nissan Parts
Department.
CAUTION:
Do not use excessive force as many components are constructed of plastic and may be damaged.
NOTE:
Always check with the Parts Department for the latest parts information.
The following materials are contained in the Nissan Squeak and Rattle Kit (J-43980). Each item can be
ordered separately as needed.
URETHANE PADS [1.5 mm (0.059 in) thick]
Insulates connectors, harness, etc.
76268-9E005: 100×135 mm (3.94×5.31 in)/76884-71L01: 60×85 mm (2.36×3.35 in)/76884-
71L02: 15×25 mm (0.59×0.98 in)
INSULATOR (Foam blocks)
Insulates components from contact. Can be used to fill space behind a panel.
73982-9E000: 45 mm (1.77 in) thick, 50×50 mm (1.97×1.97 in)/73982-
50Y00: 10 mm (0.39 in) thick, 50×50 mm (1.97×1.97 in)

SE-8
SQUEAK AND RATTLE TROUBLE DIAGNOSES
Revision: 2007 April2007 M35/M45
TRUNK
Trunk noises are often caused by a loose jack or loose items put into the 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
Most of these incidents can be repaired by adjusting, securing or insulating the item(s) or component(s) caus-
ing the noise.
SUNROOF/HEADLINING
Noises in the sunroof/headlining area can often be traced to one of the following:
1. Sunroof lid, rail, linkage or seals making a rattle or light knocking noise
2. Sunvisor shaft shaking in the holder
3. Front or rear windshield touching headlining and squeaking
Again, pressing on the components to stop the noise while duplicating the conditions can isolate most of these
incidents. Repairs usually consist of insulating with felt cloth tape.
SEATS
When isolating seat noise it's important to note the position the seat is in and the load placed on the seat when
the noise is present. These conditions should be duplicated when verifying and isolating the cause of the
noise.
Cause of seat noise include:
1. Headrest rods and holder
2. A squeak between the seat pad cushion and frame
3. The rear seatback lock and bracket
These noises can be isolated by moving or pressing on the suspected components while duplicating the con-
ditions under which the noise occurs. Most of these incidents can be repaired by repositioning the component
or applying urethane tape to the contact area.
UNDERHOOD
Some interior noise may be caused by components under the hood or on the engine wall. The noise is then
transmitted into the passenger compartment.
Causes of transmitted underhood noise include:
1. Any component mounted to the engine wall
2. Components that pass through the engine wall
3. Engine wall mounts and connectors
4. Loose radiator mounting pins
5. Hood bumpers out of adjustment
6. Hood striker out of adjustment
These noises can be difficult to isolate since they cannot be reached from the interior of the vehicle. The best
method is to secure, move or insulate one component at a time and test drive the vehicle. Also, engine RPM
or load can be changed to isolate the noise. Repairs can usually be made by moving, adjusting, securing, or
insulating the component causing the noise.

AUTOMATIC DRIVE POSITIONER
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Revision: 2007 April2007 M35/M45
CONSULT-II Function (AUTO DRIVE POS.)NIS00260
CONSULT-II can display each diagnostic item using the diagnostic test modes shown following.
CONSULT-II START PROCEDURE
Refer to GI-38, "CONSULT-II Start Procedure" .
SELF-DIAGNOSIS RESULTS
HOW TO READ SELF-DIAG RESULTS
NOTE:

CAN communication malfunction and detention switch malfunction are displayed on “TIME”. (1)
–If error is detected in the present, “CRNT” is displayed.
–If error is detected in the past (present error is not detected), “PAST” is displayed.
–If error has never been detected, nothing is displayed on “TIME”.

Any items other than CAN communication malfunction and detention switch malfunction are counted. (2)
–If error is detected, error detection frequency is displayed from “1” to “127” on “TIME”.
–If error has never been detected, nothing is displayed on “TIME”.
–Can clear the detected memory.
Normal: Clear memory in normal condition, history is erased and nothing is displayed on “TIME”.
Error: Clear memory in error condition, error is detected again and “1” is displayed on “TIME”.
AUTO DRIVE POS.
diagnostic modeDescriptionReference
page
WORK SUPPORT Changes settings for each function.SE-16
SELF-DIAG RESULTS Displays driver seat control unit self-diagnosis results.SE-37
DATA MONITOR Displays driver seat control unit input/output data in real time.SE-38
CAN DIAG SUPPORT MNTR The result of transmit/receive diagnosis of CAN communication can be read.LAN-44
ACTIVE TEST Operation of electrical loads can be checked by sending drive signal to them.SE-39
ECU PART NUMBER Driver seat control unit part number can be read. —
PIIB6449E

SE-168
FRONT SEAT
Revision: 2007 April2007 M35/M45
Removal and InstallationNIS0028G
CAUTION:
When removing and installing, use shop cloths to protect parts from damage.
REMOVAL
1. Pull rear leg cover backward while opening outside to remove
the rear leg cover.
2. Remove the mounting bolts on the back side of the front seat.
3. Pull rear leg cover forward while opening outside to remove the
front leg cover.
4. Remove the mounting bolts on the front side of the front seat.
5. Disconnect harness connector under the seat and remove harness securing clips.
CAUTION:
Before removal, be sure to turn ignition switch OFF, disconnect both battery cables, and then wait
for at least 3 minutes.
6. Set seatback in a standing position.
7. Remove the headrest.
8. Remove seat from the vehicle.
CAUTION:
When removing and installing, use shop cloths to protect parts from damage.
INSTALLATION
Install in the reverse order of removal. Be careful of the following two points.

Before installation, be sure to turn ignition switch OFF, disconnect both battery cables, and then wait for at
least 3 minutes.

Clamp the harness in position.
PIIB3343J
PIIB3342J
PIIB3347J

SE-170
FRONT SEAT
Revision: 2007 April2007 M35/M45

Remove the bracket mounting nuts.

Remove seatback trim and pad from seatback frame.

Remove the hog rings to separate the trim and pad.
2. Remove seatback frame.

Remove seat speaker. (Applied 5.1 ch BOSE studio surround® system models) Refer to AV- 2 7 9 , "Seat
Speaker" .

Remove the bands, and then remove seatback thermal electrical device (TED) assembly.

Remove the seat harness assembly from seatback assembly.

Remove the bolts, and then remove seatback frame from seat cushion frame.
Assembly
Assemble in the reverse order of disassembly. Be careful of the following one point.
Install the hog rings of seat cushion trim in position, and then
securely connect the trim or trim code with the pad side wire.
SEAT CUSHION
Disassembly
1. Remove the seatback trim and seatback pad.

Remove the retainer from the lower side of seatback board.

Disconnect the clip and pawl, and then remove seatback
board.
: Pawl
: Clip

Remove the screws and disconnect the clips, and then
remove the seat cushion rear finisher. (Climate controlled
seat model)
PIIB3356J
PIIB3344J
PIIB3345J

SE-172
FRONT SEAT
Revision: 2007 April2007 M35/M45

Remove driver's seat control unit. (Driver's seat only)

Remove the driver seat control switch.

Remove seat cushion finisher B and seat cushion finisher C.

Remove seat harnesses.
Assembly
Assemble in the reverse order of disassembly. Be careful of the following two points.

Install the hog rings of seat cushion trim in position, and then
securely connect the trim or trim code with the pad side wire.

Clamp the harness in position.
CLIMATE CONTROLLED SEAT
Blower Filter Replacement
Put your hand behind front seat cushion, pull filter downward and
remove it. Replace filter with a new one.
NOTE:

When replacing, be sure to set the front seat lifter to the top
position.

When installing, do not confuse up-down direction of the filter.
PIIB3357J
PIIB3356J
PIIB6502E

REAR SEAT
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Removal and InstallationNIS0028K
CAUTION:
When removing and installing, use shop cloths to protect parts from damage.
BENCH SEAT
Removal
1. Remove seat cushion.

Pull the lock lever at the front bottom of the seat cushion for-
ward (1 for each side), and pull the seat cushion upward to
release the wire from the seat cushion hook, then pull the seat
cushion forward to remove.

Remove the seat cushion from the vehicle.
2. Remove seat back.

Remove the nuts under seatback.

Lift up seatback assembly from underneath, and then remove
seatback assembly from seatback hook that is fixed to the
vehicle.

Remove the headrest.

Remove the seatback from the vehicle.
Installation
Install in the reverse order of removal. Be careful of the following one point.
Securely engage the upper wire on the back side of seatback with seat hook.
POWER SEAT
Removal
1. Remove seat cushion side.

Lift seat cushion side up, disengage the seat cushion hook,
and then remove the seat cushion side.

Remove the seat cushion side from the vehicle.
2. Remove the seat cushion center.

Disconnect the harness connector.

Remove the bolts, and then remove the seat cushion center from the vehicle.
3. Remove seatback side.

Access to the back side of seatback side from the lower, and
then pull the lock lever of seatback hook downward.

Pull seatback side, and then remove seatback side from the
seatback hook.
: Seatback hook

Lift up seatback side from underneath, and then remove seatback side from seatback hook.

Disconnect the harness connector.
PIIB3360J
PIIB4085J
PIIB3359J