2005 NISSAN NAVARA ESP

COMBINATION METERS
DI-19
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PRELIMINARY CHECK
1.CHECK WARNING LAMPS ILLUMINATION
1. Turn ignition switch ON.
2. Make sure warning lamps (such as malfunction indicator lamp and oil pressure warning indicator) illumi-
nate.
Do warning lamps illuminate?
YES >> GO TO 2.
NO >> Check ignition power supply system of combination meter. Refer toDI-19, "
Power Supply and
Ground Circuit Inspection".
2.CHECK COMBINATION METER (SELF-DIAGNOSIS MODE)
Perform self-diagnosis mode of combination meter function. Refer toDI-13, "
Self-Diagnosis Mode of Combi-
nation Meter".
Does self-diagnosis mode operate normally?
YES >> GO TO 3.
NO >> Check applicable parts, and repair or replace corresponding parts.
3.CHECK COMBINATION METER (CONSULT-II)
Perform self-diagnosis of combination meter. Refer toDI-15, "
CONSULT-II Function (METER)".
Self-diagnosis results
No malfunction detected>>INSPECTION END
Malfunction detected>>Check applicable parts, and repair or replace corresponding parts.
Symptom ChartEKS00L8P
Power Supply and Ground Circuit InspectionEKS00L8O
1.CHECK FUSE
Check for blown fuse of combination meter.
OK or NG
OK >> GO TO 2.
NG >> Be sure to eliminate cause of malfunction before installing new fuse. Refer toPG-4, "
POWER
SUPPLY ROUTING CIRCUIT".
Symptom Possible cause
Speedometer and odo/trip meter indication is malfunction. Refer toDI-20, "
Vehicle Speed Signal Inspection".
Tachometer indication is malfunction. Refer toDI-21, "
Engine Speed Signal Inspection".
Water temperature gauge indication is malfunction. Refer toDI-21, "
Engine Coolant Temperature Signal Inspection".
Fuel gauge indication is malfunction.
Refer toDI-22, "
Fuel Level Sensor Signal Inspection".
Low-fuel warning lamp indication is irregular.
A/T indication is malfunction. Refer toDI-50, "
A/T Indicator Does Not Illuminate".
Ambient air temperature indication is malfunction. Refer toDI-24, "
Ambient Sensor Signal Inspection".
Power source Fuse No.
Battery 19
Ignition switch ON or START 14

DI-44
WARNING LAMPS
Oil Pressure Warning Lamp Stays Off (Ignition Switch ON)
EKS00M52
1.CHECK OIL PRESSURE WARNING LAMP OPERATION
Activate IPDM E/R auto active test. Refer toPG-19, "
Auto Active Test".
Does oil pressure warning lamp blink?
YES >> GO TO 2.
NO >> GO TO 4.
2.CHECK OIL PRESSURE SWITCH CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect IPDM E/R connector and oil pressure switch connector.
3. Check continuity between IPDM E/R harness connector (A) and
oil pressure switch harness connector (B).
OK or NG
OK >> GO TO 3.
NG >> Repair harness or connector.
3.CHECK OIL PRESSURE SWITCH
Check oil pressure switch. Refer toDI-47, "
OIL PRESSURE SWITCH".
OK or NG
OK >> Replace IPDM E/R. Refer toPG-26, "Removal and Installation of IPDM E/R".
NG >> Replace oil pressure switch.
4.CHECK COMBINATION METER (CONSULT-II)
Perform self-diagnosis of combination meter. Refer toDI-15, "
CONSULT-II Function (METER)".
Self-diagnosis results
No malfunction detected>> GO TO 5.
Malfunction detected>> Check applicable parts, and repair or replace corresponding parts.
5.CHECK COMBINATION METER INPUT SIGNAL
Select “METER” on CONSULT-II. Operate ignition switch with “OIL
W/L” of “DATA MONITOR” and check operation status.
OK or NG
OK >> Replace combination meter.
NG >> Replace IPDM E/R.
AB
Connector Terminal Connector Terminal
E17 42 F33 1
PKIC1995E
“OIL W/L”
When ignition switch is in ON
position (Engine stopped):ON
When engine running : OFF
PKIA2064E

DI-46
WARNING LAMPS
5.CHECK IPDM E/R (CONSULT-II)
Perform self-diagnosis of IPDM E/R. Refer toPG-16, "
CONSULT-II Function (IPDM E/R)".
Self-diagnosis results
No malfunction detected>>Replace combination meter.
Malfunction detected>> Check applicable parts, and repair or replace corresponding parts.
Oil Pressure Warning Lamp Keeps Blinking (Oil Level Is Normal)EKS00MM6
NOTE:
For engine oil level inspection, refer toLU-5, "
ENGINE OIL LEVEL".
If combination meter detects that oil level sensor is open or short circuit, oil level warning is displayed.
1.CHECK OIL LEVEL SENSOR
1. Turn ignition switch OFF.
2. Disconnect oil level sensor connector.
3. Check oil level sensor. Refer toDI-47, "
OIL LEVEL SENSOR".
OK or NG
OK >> GO TO 2.
NG >> Replace oil level sensor.
2.CHECK OIL LEVEL SENSOR POWER SUPPLY CIRCUIT
1. Disconnect combination meter connector.
2. Check continuity between combination meter harness connector
(A) and oil level sensor harness connector (B).
3. Check continuity between combination meter harness connector
(A) and ground.
OK or NG
OK >> GO TO 3.
NG >> Repair harness or connector.
AB
Continuity
Connector Terminal Connector Terminal
M22 51 F34 3 Yes
A
GroundContinuity
Connector Terminal
M22 51 No
SKIB4799E

DI-50
A/T INDICATOR
A/T Indicator Does Not Illuminate
EKS00PDL
1.CHECK SEGMENT OF A/T INDICATOR
Perform self-diagnosis mode of combination meter. Refer toDI-13, "
Self-Diagnosis Mode of Combination
Meter".
Are all segments displayed?
YES >> GO TO 2.
NO >> Replace combination meter.
2.CHECK COMBINATION METER (CONSULT-II)
Perform self-diagnosis of combination meter. Refer toDI-15, "
CONSULT-II Function (METER)".
OK or NG
OK >> GO TO 3.
NG >> Check applicable part, and repair or replace corresponding parts.
3.CHECK COMBINATION METER INPUT SIGNAL
Use “DATA MONITOR” of “METER” on CONSULT-II. Confirm each
indication on the monitor when operating the shift lever.
OK or NG
OK >> Replace combination meter.
NG >> GO TO 4.
4.CHECK TCM (CONSULT-II)
Perform self-diagnosis of TCM. Refer toAT-77, "
CONSULT-II Function (A/T)".
OK or NG
OK >> Check TCM input/output signal. Refer toAT-76, "TCM Input/Output Signal Reference Values".
NG >> Check applicable part, and repair or replace corresponding parts.
Display item Switch operation Status
P RANGE INDP range position ON
Except for P range position OFF
RRANGEINDR range position ON
Except for R range position OFF
NRANGEINDN range position ON
Except for N range position OFF
DRANGEINDD range position ON
Except for D range position OFF
3RANGEIND3 range position ON
Except for 3 range position OFF
2RANGEIND2 range position ON
Except for 2 range position OFF
1RANGEIND1 range position ON
Except for 1 range position OFF
PKIC2509E

DI-60
WARNING CHIME
4. During the operation check, touching “OFF” deactivates the operation.
Display Item List
SELF-DIAG RESULTS
Operation Procedure
1. Touch “BCM” on “SELECT TEST ITEM” screen.
2. Touch “SELF-DIAG RESULTS” on “SELECT DIAG MODE” screen.
3. Self-diagnosis results are displayed.
Display Item List
NOTE:
If “CAN communication [U1000]” is indicated, print the monitor item, and then go to “LAN System”. Refer to
LAN-3, "
Precautions When Using CONSULT-II".
Trouble DiagnosisEKS00L9I
HOW TO PERFORM TROUBLE DIAGNOSIS
1. Confirm the symptom and customer complaint.
2. Understand the outline of system. Refer toDI-51, "
System Description".
3. Perform the preliminary inspection. Refer toDI-60, "
PRELIMINARY INSPECTION".
4. Referring to trouble diagnosis chart, repair or replace the cause of the malfunction. Refer toDI-61,
"SYMPTOM CHART".
5. Does warning chime system operate normally? If it operates normally, GO TO 6. If not, GO TO 3.
6. INSPECTION END
PRELIMINARY INSPECTION
1.CHECK BCM (CONSULT-II)
Perform self-diagnosis of BCM.Refer toBCS-14, "
CONSULT-II Function (BCM)".
Self
-diagnosis results
No malfunction detected>>GO TO 2.
Malfunction detected>>Check applicable parts, and repair or replace corresponding parts.
2.CHECK COMBINATION METER (CONSULT-II)
Perform self-diagnosis of combination meter. Refer toDI-15, "
CONSULT-II Function (METER)".
Self
-diagnosis results
No malfunction detected>>INSPECTION END
Malfunction detected>>Check applicable parts, and repair or replace corresponding parts.
Test item Malfunction is detected when···
LIGHT WARN ALM This test is able to check light warning chime operation.
IGN KEY WARN ALM This test is able to check key warning chime operation.
KEY REMINDER WARN This test is able to check key reminder warning chime operation.
Monitored Item CONSULT-II display Description
CAN communication CAN communication [U1000] Malfunction is detected in CAN communication.

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

ENGINE CONTROL SYSTEM
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EC
When the ECM receives a start signal from the ignition switch, the
ECM adapts the fuel injection system for the start control. The
amount of fuel injected at engine starting is a preset program value
in the ECM. The program is determined by the engine speed, engine
coolant temperature and fuel rail pressure.
For better startability under cool engine conditions, the lower the
coolant temperature becomes, the greater the amount of fuel
injected. The ECM ends the start control when the engine speed
reaches the specific value, and shifts the control to the normal or idle
control.
IDLE CONTROL
Input/Output Signal Chart
*: The input signal is sent to the ECM through CAN communication line.
When the ECM determines that the engine speed is at idle, the fuel injection system is adapted for the idle
control. The ECM regulates the amount of fuel injected corresponding to changes in load applied to the engine
to keep engine speed constant. The ECM also provides the system with a fast idle control in response to the
engine coolant temperature signal.
NORMAL CONTROL
Input/Output Signal Chart
The amount of fuel injected under normal driving conditions is deter-
mined according to sensor signals. The crankshaft position sensor
detects engine speed, the accelerator pedal position sensor detects
accelerator pedal position and fuel rail pressure sensor detects fuel
rail pressure. These sensors send signals to the ECM.
The fuel injection data, predetermined by correlation between vari-
ous engine speeds, accelerator pedal positions and fuel rail pres-
sure are stored in the ECM memory, forming a map. The ECM
determines the optimal amount of fuel to be injected using the sen-
sor signals in comparison with the map.
SEF648S
Sensor Input Signal to ECM ECM Function Actuator
Engine coolant temperature sensor Engine coolant temperature
Fuel injection
control (idle
control)Fuel injector
Fuel pump Crankshaft position sensor Engine speed
Battery Battery voltage
Accelerator pedal position sensor Accelerator pedal position
Fuel rail pressure sensor Fuel rail pressure
Wheel sensor Vehicle speed*
Air conditioner switch Air conditioner ON signal*
Front air control PTC heater ON signal*
Heat up switch Heat up switch signal
Sensor Input Signal to ECM ECM Function Actuator
Crankshaft position sensor Engine speed
Fuel injection
control (normal
control)Fuel injector
Fuel pump Accelerator pedal position sensor Accelerator position
Fuel rail pressure sensor Fuel rail pressure
SEF649S

TROUBLE DIAGNOSIS
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TROUBLE DIAGNOSISPFP:00004
Trouble Diagnosis IntroductionEBS01KCT
INTRODUCTION
The engine has an ECM to control major systems such as fuel injec-
tion control, fuel injection timing control, glow control system, etc.
The ECM accepts input signals from sensors and instantly actuators.
It is essential that both input and output signals are proper and sta-
ble. At the same time, it is important that there are no malfunctions
such as vacuum leaks, or other malfunctions with the engine.
It is much more difficult to diagnose a malfunction that occurs inter-
mittently rather than continuously. Most intermittent malfunctions are
caused by poor electric connections or improper wiring. In this case,
careful checking of suspected circuits may help prevent the replace-
ment of good parts.
A visual check only may not find the cause of the incidents. A road
test with CONSULT-II or a circuit tester connected should be per-
formed. Follow theEC-34, "
WORK FLOW".
Before undertaking actual checks, take a few minutes to talk with a
customer who approaches with a driveability complaint. The cus-
tomer can supply good information about such incidents, especially
intermittent ones. Find out what symptoms are present and under
what conditions they occur. A Diagnostic Worksheet like the example
on next page should be used.
Start your diagnosis by looking for “conventional” incidents first. This
will help troubleshoot driveability incidents on an electronically con-
trolled engine vehicle.
MEF036D
SEF233G
SEF234G