engine control NISSAN NAVARA 2005 Repair Workshop Manual

COMBINATION METERS
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DATA MONITOR
Operation Procedure
1. Touch “DATA MONITOR” on “SELECT DIAG MODE” screen.
2. Touch either “MAIN SIGNALS” or “SELECTION FROM MENU” on the “DATA MONITOR” screen.
3. When “SELECTION FROM MENU” is selected, touch individual items to monitor. When “MAIN SIGNALS”
is selected, main items is monitored.
4. Touch “START”.
5. To record monitored item, touch “RECORD” while monitoring. To
stop recording, touch “STOP”.
Display Item List
MAIN SIGNALS Monitors main signals.
SELECTION FROM MENU Selects and monitors individual signal.
SKIA4957E
Display item [Unit]MAIN
SIGNALSSELECTION
FROM MENUContents
SPEED METER [km/h] or [mph] X XThe value of vehicle speed signal, which is input from ABS
actuator and electric unit (control unit).
SPEED OUTPUT [km/h] or [mph] X XThe value of vehicle speed signal, which is transmitted to each
unit with CAN communication.
TACHO METER [rpm] X X The value of engine speed signal, which is input from ECM.
W TEMP METER [°C] or [°F] X XThe value of engine coolant temperature signal, which is input
from ECM.
FUEL METER [lit.] X XThe value, which processes a resistance signal from fuel
gauge.
DISTANCE [km] or [mile] X XThe value, which is calculated by vehicle speed signal from
ABS actuator and electric unit (control unit), fuel gauge and
fuel consumption signal from ECM.
FUEL W/L [ON/OFF] X X Indicates [ON/OFF] condition of low-fuel warning lamp.
C-ENG W/L [ON/OFF] X Indicates [ON/OFF] condition of malfunction indicator.
AIR PRES W/L [ON/OFF] XIndicates [ON/OFF] condition of low tire pressure warning
lamp.
SEAT BELT W/L [ON/OFF] X Indicates [ON/OFF] condition of seat belt warning lamp.
BUZZER [ON/OFF] X X Indicates [ON/OFF] condition of buzzer.
DOOR W/L [ON/OFF] X Indicates [ON/OFF] condition of door warning lamp.
HI-BEAM IND [ON/OFF] X Indicates [ON/OFF] condition of high beam indicator lamp.
TURN IND [ON/OFF] X Indicates [ON/OFF] condition of turn indicator.
FR FOG IND [ON/OFF] X Indicates [ON/OFF] condition of front fog indicator lamp.
RR FOG IND [ON/OFF] X Indicates [ON/OFF] condition of rear fog indicator lamp.
OIL W/L [ON/OFF] X Indicates [ON/OFF] condition of oil pressure warning lamp.
VDC/TCS IND [ON/OFF] X Indicates [ON/OFF] condition of ESP OFF indicator lamp.
ABS W/L [ON/OFF] X Indicates [ON/OFF] condition of ABS warning lamp.
SLIP IND [ON/OFF] X Indicates [ON/OFF] condition of SLIP indicator lamp.
BRAKE W/L [ON/OFF] X Indicates [ON/OFF] condition of brake warning lamp.*

DI-20
COMBINATION METERS
2.CHECK POWER SUPPLY CIRCUIT
Check voltage between combination meter harness connector termi-
nals and ground.
OK or NG
OK >> GO TO 3.
NG >> Repair harness between combination meter and fuse.
3.CHECK GROUND CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect combination meter connector.
3. Check continuity between combination meter harness connector
terminals and ground.
OK or NG
OK >> INSPECTION END
NG >> Repair harness or connector.
Vehicle Speed Signal InspectionEKS00PDF
Symptom: Indication is irregular for the speedometer and odo/trip meter.
1.CHECK COMBINATION METER INPUT SIGNAL
1. Start engine and select “METER” on CONSULT-II.
2. Drive vehicle.
3. Using “SPEED METER” on “DATA MONITOR”, compare the
value of “DATA MONITOR” with speedometer pointer of combi-
nation meter.
OK or NG
OK >> Perform ABS actuator and electric unit (control unit) self-
diagnosis. Refer toBRC-17, "
CONSULT- II Functions".
NG >> Replace combination meter.
Terminals Ignition switch position
(+)
(–) OFF ON
Combination meter
connectorTerminal
M233
GroundBattery voltage Battery voltage
16 0 V Battery voltage
SKIB4718E
Combination meter
connectorTe r m i n a l
GroundContinuity
M2313
Ye s
23
SKIB4719E
SKIB4578E

EC-1
ENGINE CONTROL SYSTEM
B ENGINE
CONTENTS
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SECTIONEC
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ENGINE CONTROL SYSTEM
INDEX FOR DTC ........................................................ 6
DTC No. Index ......................................................... 6
Alphabetical Index .................................................... 8
PRECAUTIONS ........................................................ 10
Precautions for Supplemental Restraint System
(SRS)“AIRBAG”and“SEATBELTPRE-TEN-
SIONER” ................................................................ 10
On Board Diagnostic (OBD) System of Engine ...... 10
Precautions ............................................................ 10
Wiring Diagrams and Trouble Diagnosis ................ 13
PREPARATION ......................................................... 14
Special Service Tools ............................................. 14
Commercial Service Tools ...................................... 14
ENGINE CONTROL SYSTEM .................................. 15
System Diagram ..................................................... 15
Vacuum Hose Drawing ........................................... 16
System Chart ......................................................... 18
Fuel Injection Control System ................................ 18
Fuel Injection Timing Control System ..................... 20
Air Conditioning Cut Control ................................... 20
Fuel Cut Control (At No Load & High Engine Speed)... 20
Crankcase Ventilation System ............................... 21
CAN Communication .............................................. 22
BASIC SERVICE PROCEDURE .............................. 23
Fuel Filter ............................................................... 23
Fuel Pump Learning Value Clearing ...................... 24
Injector Adjustment Value Registration .................. 25
ON BOARD DIAGNOSTIC (OBD) SYSTEM ............ 27
DTC Detection Logic .............................................. 27
Diagnostic Trouble Code (DTC) ............................. 27
Freeze Frame Data ................................................ 28
NATS (Nissan Anti-theft System) ........................... 28
Malfunction Indicator (MI) ....................................... 28
Relationship Between MI, DTC, CONSULT-II and
Driving Patterns ...................................................... 31
TROUBLE DIAGNOSIS ............................................ 33
Trouble Diagnosis Introduction ............................... 33
DTC Inspection Priority Chart ................................ 37
Basic Inspection ..................................................... 38
Symptom Matrix Chart ........................................... 42Engine Control Component Parts Location ............ 46
Circuit Diagram ....................................................... 50
ECM Harness Connector Terminal Layout ............. 52
ECM Terminals And Reference Value .................... 52
CONSULT-II Function (ENGINE) ............................ 59
CONSULT-II Reference Value in Data Monitor Mode
... 66
Major Sensor Reference Graph in Data Monitor
Mode ....................................................................... 69
TROUBLE DIAGNOSIS FOR INTERMITTENT INCI-
DENT ......................................................................... 70
Description .............................................................. 70
Diagnostic Procedure ............................................. 70
POWER SUPPLY AND GROUND CIRCUIT ............. 71
ECM Terminals and Reference Value ..................... 71
Wiring Diagram ....................................................... 72
Diagnostic Procedure ............................................. 73
Ground Inspection .................................................. 78
DTC U1000 CAN COMMUNICATION LINE .............. 79
Description .............................................................. 79
On Board Diagnosis Logic ...................................... 79
DTC Confirmation Procedure ................................. 79
Wiring Diagram ....................................................... 80
Diagnostic Procedure ............................................. 81
DTC P0016 CKP - CMP CORRELATION ................. 82
On Board Diagnosis Logic ...................................... 82
DTC Confirmation Procedure ................................. 82
Diagnostic Procedure ............................................. 82
DTC P0088 FUEL SYSTEM ...................................... 84
On Board Diagnosis Logic ...................................... 84
DTC Confirmation Procedure ................................. 84
Diagnostic Procedure ............................................. 84
Removal and Installation ........................................ 85
DTC P0089 FUEL PUMP .......................................... 86
On Board Diagnosis Logic ...................................... 86
DTC Confirmation Procedure ................................. 86
Diagnostic Procedure ............................................. 87
Removal and Installation ........................................ 87
DTC P0093 FUEL SYSTEM ...................................... 88
On Board Diagnosis Logic ...................................... 88

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

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

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
EC-17
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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.

EC-18
ENGINE CONTROL SYSTEM
System Chart
EBS01KCD
*1: The input signal is sent to the ECM through CAN communication line.
*2: The output signal is sent from the ECM through CAN communication line.
Fuel Injection Control SystemEBS01KCE
SYSTEM DESCRIPTION
Three types of fuel injection control are provided to accommodate engine operating conditions; normal control,
idle control and start control. The ECM determines the appropriate fuel injection control. Under each control,
the amount of fuel injected is adjusted to improve engine performance.
Pulse signals are sent to fuel injectors according to the input signals to adjust the amount of fuel injected to
preset value.
START CONTROL
Input/Output Signal Chart
Input (Sensor) ECM Function Output (Actuator)
lAccelerator pedal position sensor
lFuel rail pressure sensor
lFuel pump temperature sensor
lEngine coolant temperature sensor
lMass air flow sensor
lIntake air temperature sensor
lCrankshaft position sensor
lCamshaft position sensor
lTurbocharger boost sensor
lWheel sensor*1
lIgnition switch
lASCD steering switch
lASCD brake switch
lASCD clutch switch
lSt o p l a m p s w it c h
lAir conditioner switch*1
lFront air control*1
lPark/neutral position switch
lHeat up switch
lRefrigerant pressure sensor
lBattery voltageFuel injection control Fuel injector and Fuel pump
Fuel injection timing control Fuel injector and Fuel pump
Fuel cut control Fuel injector and Fuel pump
Glow control system
Glow relay and glow indicator lamp*
2
ASCD vehicle speed control Fuel injector and Fuel pump
On board diagnostic system
Malfunction indicator (MI)*
2
EGR volume control EGR volume control valve
Cooling fan control
Cooling fan relay*
2
Turbocharger boost controlTurbocharger boost control solenoid
valve
Intake air control valve controlIntake air control valve control solenoid
valve
Air conditioning cut control
Air conditioner relay*
2
Sensor Input Signal to ECM ECM Function Actuator
Engine coolant temperature sensor Engine coolant temperature
Fuel injection
control (start
control)Fuel injector
Fuel pump Crankshaft position sensor Engine speed
Camshaft position sensor Piston position
Ignition switch Start signal
Fuel rail pressure sensor Fuel rail pressure