2005 NISSAN NAVARA engine

EC-5
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ECA . 303
ECM Terminals and Reference Value .................. 303
Wiring Diagram .................................................... 304
Diagnostic Procedure ........................................... 305
Component Inspection ......................................... 307
Removal and Installation ...................................... 308
TC BOOST CONTROL SOLENOID VALVE ........... 309
Description ........................................................... 309
ECM Terminals and Reference Value .................. 310
Wiring Diagram ..................................................... 311
Diagnostic Procedure ........................................... 312
Component Inspection ......................................... 313
Removal and Installation ...................................... 313
INTAKE AIR CONTROL VALVE CONTROL SOLE-
NOID VALVE ........................................................... 314
Description ........................................................... 314
ECM Terminals and Reference Value .................. 314
Wiring Diagram .................................................... 315
Diagnostic Procedure ........................................... 316
Component Inspection ......................................... 318
HEAT UP SWITCH .................................................. 319
Description ........................................................... 319
CONSULT-II Reference Value in Data Monitor Mode
. 319
ECM Terminals and Reference Value .................. 319
Wiring Diagram .................................................... 320
Diagnostic Procedure ........................................... 321
Component Inspection ......................................... 324
REFRIGERANT PRESSURE SENSOR ................. 325
Component Description ........................................ 325
ECM Terminals and Reference Value .................. 325
Wiring Diagram .................................................... 326
Diagnostic Procedure ........................................... 327
Removal and Installation ...................................... 329
BRAKE SWITCH .................................................... 330
Description ........................................................... 330
CONSULT-II Reference Value in Data Monitor Mode.330
ECM Terminals and Reference Value ...................330
Wiring Diagram .....................................................331
Diagnostic Procedure ...........................................332
Component Inspection ..........................................341
PNP SWITCH ..........................................................342
Description ............................................................342
CONSULT-II Reference Value in Data Monitor Mode
.342
ECM Terminals and Reference Value ...................342
Wiring Diagram .....................................................343
Diagnostic Procedure ...........................................344
START SIGNAL ......................................................348
Wiring Diagram .....................................................348
Diagnostic Procedure ...........................................349
ASCD INDICATOR ..................................................351
Component Description ........................................351
Wiring Diagram .....................................................352
Diagnostic Procedure ...........................................353
MI & DATA LINK CONNECTORS ...........................354
Wiring Diagram .....................................................354
AUTOMATIC SPEED CONTROL DEVICE (ASCD). 355
System Description ...............................................355
Component Description ........................................356
SERVICE DATA AND SPECIFICATIONS (SDS) ....357
General Specifications ..........................................357
Mass Air Flow Sensor ...........................................357
Intake Air Temperature Sensor .............................357
Engine Coolant Temperature Sensor ...................357
Fuel Rail Pressure Sensor ....................................357
Fuel Injector ..........................................................357
Glow Plug .............................................................357
EGR Volume Control Valve ..................................357
Crankshaft Position Sensor ..................................357
Camshaft Position Sensor ....................................357
Fuel Pump ............................................................358

EC-10
PRECAUTIONS
PRECAUTIONS
PFP:00001
Precautions for Supplemental Restraint System (SRS) “AIR BAG” and “SEAT
BELT PRE-TENSIONER”
EBS01KC5
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. Information necessary to service the system safely is included in the SRS and SB section of
this Service Manual.
WARNING:
lTo 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.
lImproper 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.
lDo 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.
On Board Diagnostic (OBD) System of EngineEBS01KC6
The ECM has an on board diagnostic system. It will light up the malfunction indicator (MI) to warn the driver of
a malfunction causing emission deterioration.
CAUTION:
lBe sure to turn the ignition switch OFF and disconnect the battery negative cable before any
repair or inspection work. The open/short circuit of related switches, sensors, solenoid valves,
etc. will cause the MI to light up.
lBe sure to connect and lock the connectors securely after work. A loose (unlocked) connector will
cause the MI to light up due to the open circuit. (Be sure the connector is free from water, grease,
dirt, bent terminals, etc.)
lCertain systems and components, especially those related to OBD, may use a new style slide-
locking type harness connector. For description and how to disconnect, refer toPG-75, "
HAR-
NESS CONNECTOR".
lBe sure to route and secure the harnesses properly after work. The interference of the harness
with a bracket, etc. may cause the MI to light up due to the short circuit.
lBe sure to connect rubber tubes properly after work. A misconnected or disconnected rubber tube
may cause the MI to light up due to the malfunction of the fuel system, etc.
lBe sure to erase the unnecessary malfunction information (repairs completed) from the ECM
before returning the vehicle to the customer.
PrecautionsEBS01KC7
lAlways use a 12 volt battery as power source.
lDo not attempt to disconnect battery cables while engine is
running.
lBefore connecting or disconnecting the ECM harness con-
nector, turn ignition switch OFF and disconnect battery
negative cable. Failure to do so may damage the ECM
because battery voltage is applied to ECM even if ignition
switch is turned off.
lBefore removing parts, turn ignition switch OFF and then
disconnect battery negative cable.
SEF289H

PRECAUTIONS
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lDo not disassemble ECM.
lWhen connecting ECM harness connector, fasten it
securely with levers as far as they will go as shown in the
figure.
lWhen connecting or disconnecting pin connectors into or
from ECM, take care not to damage pin terminals (bend or
break).
Make sure that there are not any bends or breaks on ECM
pin terminal, when connecting pin connectors.
lSecurely connect ECM harness connectors.
A poor connection can cause an extremely high (surge)
voltage to develop in coil and condenser, thus resulting in
damage to IC's.
lKeep engine control system harness at least 10cm (4 in)
away from adjacent harness, to prevent engine control sys-
tem malfunctions due to receiving external noise, degraded
operation of IC's, etc.
lKeep engine control system parts and harness dry.
lBefore replacing ECM, perform ECM Terminals and Refer-
ence Value inspection and make sure ECM functions prop-
erly. Refer toEC-52, "
ECM Terminals And Reference Value"
.
lHandle mass air flow sensor carefully to avoid damage.
lDo not disassemble mass air flow sensor.
lDo not clean mass air flow sensor with any type of deter-
gent.
lEven a slight leak in the air intake system can cause seri-
ous incidents.
lDo not shock or jar the camshaft position sensor, crank-
shaft position sensor.
MBIB0625E
PBIB1512E
PBIB0090E
MEF040D

EC-12
PRECAUTIONS
lAfter performing each TROUBLE DIAGNOSIS, perform DTC
Confirmation Procedure or Overall Function Check.
The DTC should not be displayed in the DTC Confirmation
Procedure if the repair is completed. The Overall Function
Check should be a good result if the repair is completed.
lWhen measuring ECM signals with a circuit tester, never
allow the two tester probes to contact.
Accidental contact of probes will cause a short circuit and
damage the ECM power transistor.
lDo not use ECM ground terminals when measuring input/
output voltage. Doing so may result in damage to the ECM's
transistor. Use a ground other than ECM terminals, such as
the ground.
lDo not disassemble fuel pump.
If NG, take proper action.
lDo not disassemble fuel injector.
If NG, replace fuel injector.
lDo not depress accelerator pedal when staring.
lImmediately after staring, do not rev up engine unnecessar-
ily.
lDo not rev up engine just prior to shutdown.
lWhen installing C.B. ham radio or a mobile phone, be sure
to observe the following as it may adversely affect elec-
tronic control systems depending on installation location.
–Keep the antenna as far as possible from the electronic
control units.
–Keep the antenna feeder line more than 20 cm (8 in) away
from the harness of electronic controls.
Do not let them run parallel for a long distance.
–Adjust the antenna and feeder line so that the standingwave
radio can be kept smaller.
–Be sure to ground the radio to vehicle body.
SAT652J
SEF348N
SEF709Y
SEF708Y

EC-14
PREPARATION
PREPARATION
PFP:00002
Special Service ToolsEBS01KC9
Commercial Service ToolsEBS01KCA
Tool number
Tool nameDescription
EG17650301
Radiator cap tester
adapterAdapting radiator cap tester to radiator cap and
radiator filler neck
a: 28 (1.10) dia.
b: 31.4 (1.236) dia.
c: 41.3 (1.626) dia.
Unit: mm (in)
KV109E0010
Break-out boxMeasuring the ECM signals with a circuit tester
KV109E0080
Y-cable adapterMeasuring the ECM signals with a circuit tester
S-NT564
S-NT825
S-NT826
Tool name Description
Socket wrench Removing and installing engine coolant
temperature sensor
S-NT705

ENGINE CONTROL SYSTEM
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ENGINE CONTROL SYSTEMPFP:23710
System DiagramEBS01KCB
MBIB1287E

EC-16
ENGINE CONTROL SYSTEM
Vacuum Hose Drawing
EBS01KCC
LEFT SIDE OF THE ENGINE ROOM
Refer toEC-15, "System Diagram"for Vacuum Control System.
MBIB1387E
: Vehicle front
1. Turbocharger boost control
solenoid valve2. Turbocharger control actuator A. From next page
NOTE: Do not use soapy water or any type of solvent while installing vacuum hose.

ENGINE CONTROL SYSTEM
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RIGHT SIDE OF THE ENGINE ROOM
Refer toEC-15, "System Diagram"for Vacuum Control System.
MBIB1288E
: Vehicle front
1. Fuel rail 2. Intake air control valve control
solenoid valve3. Vacuum pump
4. Intake air control valve actuator A. To previous page
NOTE: Do not use soapy water or any type of solvent while installing vacuum hose.