2005 NISSAN NAVARA relay

EC-60
TROUBLE DIAGNOSIS
ENGINE CONTROL COMPONENT PARTS/CONTROL SYSTEMS APPLICATION
X: ApplicableItemDIAGNOSTIC TEST MODE
SELF-DIAG RESULTS
DATA MON-
ITORACTIVE
TEST
DTCFREEZE
FRAME
DATA
ENGINE CONTROL COMPONENT PARTS
INPUTCrankshaft position sensor´´´
Camshaft position sensor´
Engine coolant temperature sensor´´´´
Vehicle speed signal´´´
Fuel pump temperature sensor´´
Accelerator pedal position sensor 1´´
Accelerator pedal position sensor 2´´
Fuel rail pressure sensor´´
Mass air flow sensor´´
Intake air temperature sensor´
Turbocharger boost sensor´´´
Refrigerant pressure sensor´
Battery voltage´´
Park/neutral position (PNP) switch´
Heat up switch´
Stop lamp switch´´
Barometric pressure sensor (built-into ECM)´´
ASCD steering switch´´
ASCD brake switch´´
ASCD clutch switch´´
OUTPUTFuel pump´´´
Fuel injector´´´
Glow relay´´
Cooling fan relay´´´
Turbocharger boost control solenoid valve´
Intake air control valve control solenoid valve
EGR volume control valve´´

TROUBLE DIAGNOSIS
EC-63
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ECACT CR PRESS [MPa]´´
lThe Fuel rail pressure (determined by
the signal voltage of the fuel rail pres-
sure sensor) is displayed.
BATTERY VOLT [V]´´
lThe power supply voltage of ECM is
displayed.
P/N POSI SW [ON/OFF]´´
lIndicates [ON/OFF] condition from the
park/neutral position switch signal.
START SIGNAL [ON/OFF]´´
lIndicates [ON/OFF] condition from the
starter signal.
AIR COND SIG [ON/OFF]´´
lIndicates [ON/OFF] condition of the air
conditioner switch as determined by
the air conditioner signal.
BRAKE SW [ON/OFF]´´
lIndicates [ON/OFF] condition from the
stop lamp switch signal.
BRAKE SW2 [ON/OFF]´´
lIndicates [ON/OFF] condition from the
ASCD brake switch and ASCD clutch
switch signal.
IGN SW [ON/OFF]´´
lIndicates [ON/OFF] condition from
ignition switch signal.
WARM UP SW [ON/OFF]´
lIndicates [ON/OFF] condition from
heat up switch signal.
MAS AIR/FL SE [V]´´
lThe signal voltage of the mass air flow
sensor is displayed.This signal is converted by ECM inter-
nally. Thus, these differ from ECM termi-
nals voltage.
MAIN INJ WID [msec]´
lIndicates the actual fuel injection pulse
width compensated by ECM according
to the input signals.
PUMP CURRENT [mA]´
lIndicates the fuel pump power supply
current from the ECM.
GLOW RLY [ON/OFF]´
lThe glow relay control condition
(determined by ECM according to the
input signal) is displayed.
COOLING FAN
[LOW/HI/OFF]´
lIndicates the control condition of the
cooling fans (determined by ECM
according to the input signal).
LOW ... Operates at low speed
HI ... Operates at high speed
OFF ... Stopped
EGR VOL CON/V [step]´
lIndicates the EGR volume control
value computed by the ECM accord-
ing to the input signals.
lThe opening becomes larger as the
value increases.
INT/A VOLUME [mg/]
lThe intake air volume computed from
the mass air flow sensor signal is dis-
played.
BARO SEN [kPa]´´
lThe barometric pressure (determined
by the signal voltage from the absolute
pressure sensor built into the ECM) is
displayed. MONITOR ITEMECM
INPUT
SIG-
NALMAIN
SIG-
NALSCONDITION SPECIFICATION

EC-64
TROUBLE DIAGNOSIS
NOTE:
Any monitored item that does not match the vehicle being diagnosed is deleted from the display automatically.
ACTIVE TEST MODE
INT/M PRES SE [kPa]
lTurbocharger boost (determined by
the signal voltage from the turbo-
charger boost sensor) is displayed.
CYL COUNT [1/2/3/4]
lThe cylinder being injected is dis-
played.
1 ... Cylinder No.1 is injected.
2 ... Cylinder No.2 is injected.
3 ... Cylinder No.3 is injected.
4 ... Cylinder No.4 is injected.
SET SW
[ON/OFF]´
lIndicates [ON/OFF] condition from
SET/COAST switch signal.
RESUME/ACC SW
[ON/OFF]´
lIndicates [ON/OFF] condition from
RESUME/ACCEL switch signal.
CANCEL SW
[ON/OFF]´
lIndicates [ON/OFF] condition from
CANCEL switch signal.
MAIN SW
[ON/OFF]´
lIndicates [ON/OFF] condition from
MAIN switch signal.
ASCD APPLY [YES/NO]
lDisplaying ASCD application status
stored in ECM.
VDC APPLY [YES/NO]
lDisplaying ESP application status
stored in ECM.
AC PRESS SEN [V]
lThe signal voltage from the refrigerant
pressure sensor is displayed.
Voltage [V]
Voltage, frequency, duty cycle or pulse
width measured by the probe.Only “#” is displayed if item is unable to
be measured.
Figures with “#”s are temporary ones.
They are the same figures as an actual
piece of data which was just previously
measured. [Hz] or [%] Frequency
[msec],[Hz]or[%]
DUTY-HI
DUTY-LOW
PLS WIDTH-HI
PLS WIDTH-LOWMONITOR ITEMECM
INPUT
SIG-
NALMAIN
SIG-
NALSCONDITION SPECIFICATION
TEST ITEM CONDITION JUDGEMENT CHECK ITEM (REMEDY)
POWER BAL-
ANCE
lEngine: After warming up, idle the
engine.
lA/C switch: OFF
lShift lever: P or N (A/T), Neutral
(M/T)
lCut off each injector signal one at
a time using CONSULT-IIEngine runs rough or dies.
lHarness and connectors
lCompression
lFuel injector
COOLING FAN *
lIgnition switch: ON
lOperate the cooling fan at LOW,
HI speed and turn OFF using
CONSULT-II.Cooling fan moves at LOW, HI
speed and stops.lHarness and connector
lCooling fan motor
lCooling fan relay
ENG COOLANT
TEMP
lEngine: Return to the original
trouble condition
lChange the engine coolant tem-
perature using CONSULT-II.If trouble symptom disappears, see
CHECK ITEM.
lHarness and connectors
lEngine coolant temperature sen-
sor
lFuel injector

TROUBLE DIAGNOSIS
EC-65
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EC
*: Leaving cooling fan OFF with CONSULT-II while engine is running may cause the engine to overheat.
REAL TIME DIAGNOSIS IN DATA MONITOR MODE
CONSULT-II has two kinds of triggers and they can be selected by touching “SETTING” in “DATA MONITOR”
mode.
1. “AUTO TRIG” (Automatic trigger):
–The malfunction will be identified on the CONSULT-II screen in
real time.
In other words, DTC will be displayed if the malfunction is
detected by ECM.
At the moment a malfunction is detected by ECM, “MONITOR”
in “DATA MONITOR” screen is changed to “Recording Data ...
xx%” as shown in the figure, and the data after the malfunction
detection is recorded. Then when the percentage reached
100%, “REAL-TIME DIAG” screen is displayed. If “STOP” is
touched on the screen during “ Recording Data ... xx%”, “REAL-
TIME DIAG” screen is also displayed.
The recording time after the malfunction detection and the recording speed can be changed by “TRIG-
GER POINT” and “Recording Speed”. Refer to CONSULT-II OPERATION MANUAL.
2. “MANU TRIG” (Manual trigger):
–DTC will not be displayed automatically on CONSULT-II screen
even though a malfunction is detected by ECM.
DATA MONITOR can be performed continuously even though a
malfunction is detected.
Use these triggers as follows:
1. “AUTO TRIG”
–While trying to detect the DTC by performing the DTC Confirma-
tion Procedure, be sure to select to “DATA MONITOR (AUTO
TRIG)” mode. You can confirm the malfunction at the moment it
is detected.
–While narrowing down the possible causes, CONSULT-II should be set in “DATA MONITOR (AUTO
TRIG)” mode, especially in case the incident is intermittent.
When you are inspecting the circuit by gently shaking (or twisting) the suspicious connectors, components
and harness in the DTC Confirmation Procedure, the moment a malfunction is found the DTC will be dis-
played. Refer toGI-24, "
How to Perform Efficient Diagnosis for an Electrical Incident", “INCIDENT SIMU-
LATION TESTS”.
2. “MANU TRIG”
GLOW RLY
lIgnition switch: ON (Engine
stopped)
lTurn the glow relay ON and OFF
using CONSULT-II and listen to
operating sound.Glow relay makes the operating
sound.lHarness and connector
lGlow relay
EGR VOL CONT/
V
lIgnition switch: ON
lChange EGR volume control
valve opening step using CON-
SULT-II.EGR volume control valve makes
an operating sound.lHarness and connector
lEGR volume control valve
PRES REGULA-
TOR
lIgnition switch: ON
lChange fuel rail pressure using
CONSULT-IIFuel leaks.lFuel line
lFuel pressure relief valve
PUMP LEANT
CLEAR
lThis mode is used for performing Fuel Pump Learning Value Clearing. Refer toEC-24, "Fuel Pump Learning
Value Clearing". TEST ITEM CONDITION JUDGEMENT CHECK ITEM (REMEDY)
PBIB0480E
SEF707X

POWER SUPPLY AND GROUND CIRCUIT
EC-71
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EC
POWER SUPPLY AND GROUND CIRCUITPFP:24110
ECM Terminals and Reference ValueEBS01KD6
Specification data are reference values and are measured between each terminal and ground.
CAUTION:
Do not use ECM ground terminals when measuring input/output voltage. Doing so may result in dam-
age to the ECM's transistor. Use a ground other than ECM terminals, such as the ground.
TERMI-
NAL
NO.WIRE
COLORITEM CONDITIONDATA
(DC Voltage and Pulse Signal)
1
2
3B
B
BECM ground[Engine is running]
lIdle speedApproximately 0V
105 BR ECM relay (self shut-off)[Ignition switch ON]
[Ignition switch OFF]
lFor a few seconds after turning ignition
switch OFFApproximately 1.0V
[Ignition switch OFF]
lMore than a few seconds after turning igni-
tion switch OFFBATTERY VOLTAGE
(11 - 14V)
107
108R
RIgnition switch[Ignition switch ON]BATTERY VOLTAGE
(11 - 14V)
113 BR ECM relay (self shut-off)[Ignition switch ON]
[Ignition switch OFF]
lFor a few seconds after turning ignition
switch OFFApproximately 1.0V
[Ignition switch OFF]
lMore than a few seconds after turning igni-
tion switch OFFBATTERY VOLTAGE
(11 - 14V)
114 B ECM ground[Engine is running]
lIdle speedApproximately 0V
11 9
120R
GPower supply for ECM[Ignition switch ON]BATTERY VOLTAGE
(11 - 14V)
121 VPower supply for ECM
(Back-up)[Ignition switch OFF]BATTERY VOLTAGE
(11 - 14V)

DTC P0102, P0103 MAF SENSOR
EC-93
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EC
On Board Diagnosis LogicEBS01KDY
The MI will not light up for these self-diagnoses.
DTC Confirmation ProcedureEBS01KDZ
NOTE:
If DTC Confirmation Procedure has been previously conducted, always turn ignition switch OFF and wait at
least 10 seconds before conducting the next test.
WITH CONSULT-II
1. Turn ignition switch ON.
2. Select “DATA MONITOR” mode with CONSULT-II.
3. Wait at least 5 seconds.
4. If DTC is detected, go toEC-95, "
Diagnostic Procedure".
WITHOUT CONSULT-II
1. Turn ignition switch ON and wait at least 5 seconds.
2. Turn ignition switch OFF, wait at least 10 seconds and then turn ON.
3. Perform Diagnostic Test Mode II (Self-diagnostic results) with ECM.
4. If DTC is detected, go toEC-95, "
Diagnostic Procedure".
105
11 3BR
BRECM relay (self shut-
off)[Ignition switch ON]
[Ignition switch OFF]lFor a few seconds after turning ignition switch
OFFApproximately 1.0V
[Ignition switch OFF]
lMore than a few seconds after turning ignition
switch OFFBATTERY VOLTAGE
(11 - 14V)
11 9
120R
GPower supply for ECM[Ignition switch ON]BATTERY VOLTAGE
(11 - 14V) TERMI-
NAL
NO.WIRE
COLORITEM CONDITIONDATA
(DC Voltage)
DTC No. Trouble diagnosis name DTC detecting condition Possible cause
P0102
0102Mass air flow sensor circuit
low inputAn excessively low voltage from the sensor is
sent to ECM.
lHarness or connectors
(The sensor circuit is open or
shorted.)
lMass air flow sensor P0103
0103Mass air flow sensor circuit
high inputAn excessively high voltage from the sensor is
sent to ECM.
SEF817Y

EC-132
DTC P0217 ENGINE OVER TEMPERATURE
DTC P0217 ENGINE OVER TEMPERATURE
PFP:21481
DescriptionEBS01KFK
SYSTEM DESCRIPTION
NOTE:
If DTC P0217 is displayed with DTC U1000, first perform the trouble diagnosis for DTC U1000. Refer to
EC-79, "
DTC U1000 CAN COMMUNICATION LINE".
Cooling Fan Control
*: This signal is sent to ECM through CAN communication line.
The ECM controls the cooling fan corresponding to the vehicle speed, engine coolant temperature, refrigerant
pressure, and air conditioner ON signal. The control system has 3-step control [HIGH/LOW/OFF].
Cooling Fan Operation
Cooling Fan Relay Operation
The ECM controls cooling fan relays in the IPDM E/R through CAN communication line.
COMPONENT DESCRIPTION
Cooling Fan Motor
The cooling fan operates at each speed when the current flows in the cooling fan motor as follows.
Sensor Input Signal to ECM ECM function Actuator
Wheel sensor Vehicle speed*
Cooling fan
controlIPDM E/R
(Cooling fan relays) Engine coolant temperature sensor Engine coolant temperature
Air conditioner switch Air conditioner ON signal*
Refrigerant pressure sensor Refrigerant pressure
MBIB1266E
Cooling fan speedCooling fan relay
12
Stop (OFF) OFF OFF
Low (LOW) ON OFF
High (HI) OFF ON
Cooling fan speedCooling fan motor terminals
(+) (-)
Low (LOW) 1 3
High (HI) 2 3

EC-148
DTC P0234 TC SYSTEM
: Average voltage for pulse signal (Actual pulse signal can be confirmed by oscilloscope.)
On Board Diagnosis LogicEBS01KG4
The MI will not light up for this self-diagnosis.
NOTE:
If DTC P0234 is displayed with DTC P0652 or P0653, first perform the trouble diagnosis for DTC P0652
or P0653. Refer toEC-227, "
DTC P0652, P0653 SENSOR POWER SUPPLY".
Overall Function CheckEBS01KG5
Use this procedure to check the overall function of the turbocharger. During this check, a DTC might not be
confirmed.
1. Start engine and let it idle.
2. Make sure that turbocharger control actuator (1) rod moves
slightly when engine is started.
3. If NG, go toEC-150, "
Diagnostic Procedure".
105
11 3BR
BRECM relay (self shut-off)[Ignition switch ON]
[Ignition switch OFF]lFor a few seconds after turning ignition
switch OFFApproximately 1.0V
[Ignition switch OFF]
lMore than a few seconds after turning igni-
tion switch OFFBATTERY VOLTAGE
(11 - 14V)
11 9
120R
GPower supply for ECM[Ignition switch ON]BATTERY VOLTAGE
(11 - 14V) TERMI-
NAL
NO.WIRE
COLORITEM CONDITIONDATA
(DC Voltage and Pulse Signal)
DTC No. Trouble diagnosis name DTC detecting condition Possible cause
P0234
0234Turbocharger overboost
conditionECM detects turbocharger boost pressure
is excessively high.
lTurbocharger
lVa c u u m p u m p
lTurbocharger boost sensor
lTurbocharger boost control solenoid valve
MBIB1207E