ECU NISSAN 350Z 2007 Z33 General Information Workshop Manual

GI-6
PRECAUTIONS
Revision: 2006 November2007 350Z
Precautions for Multiport Fuel Injection System or Engine Control SystemNAS00008

Before connecting or disconnecting any harness connector for
the multiport fuel injection system or ECM:
Turn ignition switch to “OFF” position.
Disconnect negative battery terminal.
Otherwise, there may be damage to ECM.

Before disconnecting pressurized fuel line from fuel pump to
injectors, be sure to release fuel pressure.

Be careful not to jar components such as ECM and mass air
flow sensor.
Precautions for HosesNAS00009
HOSE REMOVAL AND INSTALLATION

To prevent damage to rubber hose, do not pry off rubber hose
with tapered tool or screwdriver.

To reinstall the rubber hose securely, make sure that hose inser-
tion length and orientation is correct. (If tube is equipped with
hose stopper, insert rubber hose into tube until it butts up
against hose stopper.)
HOSE CLAMPING

If old rubber hose is re-used, install hose clamp in its original
position (at the indentation where the old clamp was). If there is
a trace of tube bulging left on the old rubber hose, align rubber
hose at that position.

Discard old clamps; replace with new ones.
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SMA019D
SMA020D
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GI-32
SERVICE INFORMATION FOR ELECTRICAL INCIDENT
Revision: 2006 November2007 350Z
no voltage; short is further down the circuit than SW1.

With SW1 closed, relay and solenoid disconnected and the 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 operation 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 resistance 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.

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 the
wires are clean, securely fastened and providing a good ground path. If multiple wires are cased in one
eyelet make sure no ground wires have excess wire insulation.
For detailed ground distribution information, refer 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 resistance with DMM, contact by a single strand of wire will
give reading of 0 ohms. This would indicate a good circuit. 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.
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GI-36
CONSULT-III/GST CHECKING SYSTEM
Revision: 2006 November2007 350Z
CONSULT-III/GST CHECKING SYSTEMPFP:00000
DescriptionNAS000A4

When CONSULT-III/GST is connected with a data link connector
(A) equipped on the vehicle side, it will communicate with the
control unit equipped in the vehicle and then enable various
kinds of diagnostic tests.

Refer to CONSULT-III operation manual for more information.
Function and System Application NAS0000P
x: Applicable
*: Nissan Anti-Theft System (Nissan Vehicle Immobilizer System)
1 : Instrument driver lower panel
SAIA1557E
Diagnostic test
modeFunction
ENGINE
A/T
ABS (Including TCS)
ABS (Including VDC)
AIR BAG
BCM
METER A/C AMP
NATS(NVIS) *
AIR PRESSURE MONITOR
IPDM E/R
Work supportThis mode enables a technician to adjust some devices faster
and more accurately by following the indications on CONSULT-
II.x- -x- x - - x -
Self-diagnostic
resultsSelf-diagnostic results can be read and erased quickly. x x x x x x x x x x
Trouble diagnostic
recordCurrent self-diagnostic results and all trouble diagnostic
records previously stored can be read.----x-----
Data monitor Input/Output data in the ECU can be read. x x x x - x x - x x
CAN diagnosis
support monitorThe condition of CAN communication line can be read. x x x x - x x - - x
Active testDiagnostic Test Mode in which CONSULT-II drives some actua-
tors apart from the ECUs and also shifts some parameters in a
specified range.x-xx-x- - -x
DTC & SRT confir-
mationThe results of SRT (System Readiness Test) and the self-diag-
nosis status/result can be confirmed.x---------
DTC work supportThis mode enables a technician to monitor the status/results of
self-diagnosis performed by the ECU.-x--------
ECU (ECM/TCM)
part numberECU (ECM/TCM) part number can be read. x x x x - - - - x -
ECU discriminated
No.Classification number of a replacement ECU can be read to
prevent an incorrect ECU from being installed.----x-----
Function testThis mode can show results of self-diagnosis of ECU with
either ‘OK’ or ‘NG’. For engines, more practical tests regarding
sensors/switches and/or actuators are available.xxxxx-----
Control unit initial-
izationAll registered ignition key IDs in NATS components can be ini-
tialized and new IDs can be registered.---- - - -x - -

GI-42
TOW TRUCK TOWING
Revision: 2006 November2007 350Z
TOW TRUCK TOWINGPFP:00000
Tow Truck TowingNAS0000Y
CAUTION:


All applicable state or Provincial (in Canada) laws and local
laws regarding the towing operation must be obeyed.

It is necessary to use proper towing equipment to avoid
possible damage to the vehicle during towing operation.
Towing is in accordance with Towing Procedure Manual at
dealer.

Always attach safety chains before towing.

When towing, make sure that the transmission, steering
system and power train are in good order. If any unit is
damaged, dollies must be used.
NISSAN recommends that the vehicle be towed with the driving
(rear) wheels off the ground as illustrated.
CAUTION:

Never tow an automatic transmission model with the rear
wheels or four wheels on the ground (forward or backward).
This may cause serious and expensive damage to the
transmission.

When towing with the front wheels on the ground (if you do
not use towing dollies), turn the ignition key to the OFF
position, and secure the steering wheel in the straight-
ahead position with a rope or similar device. Never place
the ignition key in the LOCK position. This will result in
damage to the steering lock mechanism.

When towing a manual transmission model with the rear
wheels on the ground (if you do not use towing dollies),
release the parking brake and move the shift lever to the N
(Neutral) position.
SGI994
PAIA0063E

TOW TRUCK TOWING
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C
D
E
F
G
H
I
J
K
L
MB
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Revision: 2006 November2007 350Z
Vehicle Recovery (Freeing a Stuck Vehicle) NAS0000Z
FRONT
After removing the front licence plate (if so equipped),
1 Remove the recovery hook cover from the bumper.
2 Securely install the recovery hook stored with jacking tools.
Make sure that the hook is properly secured in the stored place after
use.
WARNING:

Stand clear of a stuck vehicle.

Do not spin your tires at high speed. This could cause them
to explode and result in serious injury. Parts of your vehicle
could also overheat and be damaged.
CAUTION:

Tow chains or cables must be attached only to the vehicle recovery hooks or main structural mem-
bers of the vehicle. Otherwise, the vehicle body will be damaged.

Do not use the vehicle tie downs to free a vehicle stuck in sand, snow, mud, etc. Never tow a vehi-
cle using the vehicle tie downs or recovery hooks.

Always pull the cable straight out from the front of the vehicle. Never pull on the vehicle at an
angle.

Pulling devices should be routed so they do not touch any part of the suspension, steering, brake
or cooling systems.

Pull devices such as ropes or canvas straps are not recommended for use in vehicle towing or
recovery.
If your vehicle is stuck in sand, snow, mad, etc., use the following procedure:
1. Turn off the Vehicle Dynamic Control System (if so equipped).
2. Make sure the area in front and behind the vehicle is clear of obstructions.
3. Turn the steering wheel right and left to clear an area around front tires.
4. Slowly rock the vehicle forward and backward.

Shift back and forth between R (reverse) and D (drive) (automatic transmission models) or 1st (low)
and R (reverse) (manual transmission models).

Apply the accelerator as little as possible to maintain the rocking motion.

Release the accelerator pedal before shifting between R and D (automatic transmission models) or 1st
and R (manual transmission models).

Do not spin the tires above 35 MPH (55 km/h).
5. If the vehicle cannot be freed after a few tires, contact a professional towing service to remove the vehicle.
REAR

Towing hook is not available.
PAIA0064E