light NISSAN X-TRAIL 2003 Electronic Manual PDF

ON BOARD DIAGNOSTIC (OBD) SYSTEM
EC-53
[QR (WITH EURO-OBD)]
C
D
E
F
G
H
I
J
K
L
MA
EC
RELATIONSHIP BETWEEN MI, DTC, 1ST TRIP DTC AND DRIVING PATTERNS FOR "MISFIRE"
, "FUEL INJECTION SYSTEM"
*1: When the same malfunction is
detected in two consecutive trips, MI
will light up.*2: MI will go off after vehicle is driven 3
times (pattern B) without any malfunc-
tions.*3: When the same malfunction is
detected in two consecutive trips, the
DTC and the freeze frame data will be
stored in ECM.
SEF392SA

ON BOARD DIAGNOSTIC (OBD) SYSTEM
EC-55
[QR (WITH EURO-OBD)]
C
D
E
F
G
H
I
J
K
L
MA
EC
RELATIONSHIP BETWEEN MI, DTC, 1ST TRIP DTC AND DRIVING PATTERNS EXCEPTFOR
"MISFIRE ", "FUEL INJECTION SYSTEM"
*1: When the same malfunction is
detected in two consecutive trips, MI
will light up.*2: MI will go off after vehicle is driven 3
times (pattern B) without any malfunc-
tions.*3: When the same malfunction is
detected in two consecutive trips, the
DTC and the freeze frame data will be
stored in ECM.
*4: The DTC and the freeze frame data
will not be displayed any longer after
vehicleisdriven40times(patternA)
without the same malfunction.
(The DTC and the freeze frame data
still remain in ECM.)*5: When a malfunction is detected for
the first time, the 1st trip DTC and the
1st trip freeze frame data will be
stored in ECM.*6: 1st trip DTC will be cleared after vehi-
cleisdrivenonce(patternB)without
the same malfunction.
*7: When the same malfunction is
detected in the 2nd trip, the 1st trip
freeze frame data will be cleared.
SEF393SA

TROUBLE DIAGNOSIS
EC-67
[QR (WITH EURO-OBD)]
C
D
E
F
G
H
I
J
K
L
MA
EC
10.CHECK IGNITION TIMING
1. Run engine at idle.
2. Check ignition timing with a timing light.
OK or NG
OK >>INSPECTION END
NG >> GO TO 11.
11 .PERFORM ACCELERATOR PEDAL RELEASED POSITION LEARNING
1. Stop engine.
2. PerformEC-31, "
Accelerator Pedal Released Position Learning".
>> GO TO 12.
12.PERFORM THROTTLE VALVE CLOSED POSITION LEARNING
1. Stop engine.
2. PerformEC-31, "
Throttle Valve Closed Position Learning".
>> GO TO 13.
13.PERFORM IDLE AIR VOLUME LEARNING
Refer toEC-31, "
Idle Air Volume Learning".
CMPLT or INCMP
CMPLT>>GOTO14.
INCMP >> 1. Follow the construction of “Idle Air Volume Learning”.
2. GO TO 4.
14.CHECK TARGET IDLE SPEED AGAIN
With CONSULT-II
1. Start engine and warm it up to normal operating temperature.
2. Read idle speed in “DATA MONITOR” mode with CONSULT-II.
Wi t h ou t C O N S U LT-I I
1. Start engine and warm it up to normal operating temperature.
2. Check idle speed.
OK or NG
OK >> GO TO 15.
NG >> GO TO 17.M/T: 14±5°BTDC
A/T: 16±5°BTDC (in "P" or "N" position)
Which is the result CMPLT or INCMP
M/T: 650±50 rpm
A/T: 700±50 rpm (in "P" or "N" position)
M/T: 650±50 rpm
A/T: 700±50 rpm (in "P" or "N" position)

EC-68
[QR (WITH EURO-OBD)]
TROUBLE DIAGNOSIS
15.CHECK IGNITION TIMING AGAIN
1. Run engine at idle.
2. Check ignition timing with a timing light.
OK or NG
OK >>INSPECTION END
NG >> GO TO 16.
16.CHECK TIMING CHAIN INSTALLATION
Check timing chain installation. Refer toEM-43, "
TIMING CHAIN".
OK or NG
OK >> GO TO 17.
NG >> 1. Repair the timing chain installation.
2. GO TO 4.
17.DETECT MALFUNCTIONING PART
Check the following.
lCheck camshaft position sensor (PHASE) and circuit. Refer toEC-223.
lCheck crankshaft position sensor (POS) and circuit. Refer toEC-217.
OK or NG
OK >> GO TO 18.
NG >> 1. Repair or replace.
2. GO TO 4.
18.CHECK ECM FUNCTION
1. Substitute another known-good ECM to check ECM function. (ECM may be the cause of a problem, but
this is the rarely the case.)
2. Perform initialization of NATS system and registration of NATS ignition key IDs. Refer toEC-48, "
NATS
(Nissan Anti-theft System)".
>> GO TO 4. M/T: 14±5°BTDC
A/T: 16±5°BTDC (in "P" or "N" position)

EC-82
[QR (WITH EURO-OBD)]
TROUBLE DIAGNOSIS
42 B/R Ignition switch[Ignition switch “OFF”]0V
[Ignition switch “ON”]BATTERY VOLTAGE
(11 - 14V)
43 G/OR PNP switch[Ignition switch “ON”]
lGear position is “P” or “N”.Approximately 0V
[Ignition switch “ON”]
lExcept the above gear positionA/T model
BATTERY VOLTAGE
(11 - 14V)
M/T model
Approximately 5V
50 LG Data link connector[Ignition switch “ON”]
lCONSULT-II or GST is disconnected.Approximately 5V
52 R/WElectrical load signal
(Rear window defog-
ger signal)[Ignition switch "ON"]
lRear window defogger switch is "ON"BATTERY VOLTAGE
(11 - 14V)
[Ignition switch "ON"]
lRear window defogger switch is "OFF"Approximately 0V
53 R/YElectrical load signal
(Headlamp signal)[Ignition switch "ON"]
lLighting switch is "2ND" positionBATTERY VOLTAGE
(11 - 14V)
[Ignition switch "ON"]
lLighting switch is "OFF"Approximately 0V
55 LG/BHeater fan switch sig-
nal[Ignition switch "ON"]
lHeater fan control switch is "ON"Approximately 0V
[Ignition switch "ON"]
lHeater fan control switch is "OFF"Approximately 5V
58 B Sensors' ground[Engine is running]
lWarm-up condition
lIdle speedApproximately 0V
59
60
106
108B
B
B/Y
B/YECM ground[Engine is running]
lIdle speedEngine ground
63 L/WCamshaft position
sensor (PHASE)[Engine is running]
lWarm-up condition
lIdle speed1.0 - 4.0V
[Engine is running]
lEngine speed is 2,000 rpm.1.0 - 4.0V
64 OR/LAccelerator pedal
position sensor 2
power supply[Ignition switch “ON”]Approximately 2.5V TER-
MINAL
NO.WIRE
COLORITEM CONDITION DATA (DC Voltage)
PBIB0525E
PBIB0526E

TROUBLE DIAGNOSIS
EC-89
[QR (WITH EURO-OBD)]
C
D
E
F
G
H
I
J
K
L
MA
EC
WORK SUPPORT MODE
Work Item
*: This function is not necessary in the usual service procedure.
SELF-DIAG RESULTS MODE
Self Diagnostic Item
Regarding items of “DTC and 1st trip DTC”, refer toEC-12, "INDEX FOR DTC".)
Freeze Frame Data and 1st Trip Freeze Frame Data
*1: The items are the same as those of 1st trip freeze frame data.WORK ITEM CONDITION USAGE
FUEL PRESSURE RELEASE
lFUEL PUMP WILL STOP BY TOUCHING “START” DUR-
ING IDLING.
CRANK A FEW TIMES AFTER ENGINE STALLS.When releasing fuel pressure
from fuel line
IDLE AIR VOL LEARN
lTHEIDLEAIRVOLUMETHATKEEPSTHEENGINE
WITHIN THE SPECIFIED RANGE IS MEMORIZED IN
ECM.When learning the idle air volume
SELF-LEARNING CONT
lTHE COEFFICIENT OF SELF-LEARNING CONTROL
MIXTURE RATIO RETURNS TO THE ORIGINAL COEF-
FICIENT.When releasing fuel pressure
from fuel line
TARGET IDLE RPM ADJ*
lIDLE CONDITION When setting target idle speed
TARGET IGNITION TIMING ADJ*
lIDLE CONDITION When adjusting target ignition tim-
ing
After adjustment, confirm target
ignition timing with a timing light.
Freeze frame data
item*1Description
DIAG TROUBLE
CODE
[PXXXX]
lThe engine control component part/control system has a trouble code, it is displayed as “PXXXX”. (Refer
toEC-12, "
INDEX FOR DTC".)
FUEL SYS-B1
l“Fuel injection system status” at the moment a malfunction is detected is displayed.
lOne mode in the following is displayed.
“MODE 2”: Open loop due to detected system malfunction
“MODE 3”: Open loop due to driving conditions (power enrichment, deceleration enrichment)
“MODE 4”: Closed loop - using oxygen sensor(s) as feedback for fuel control
“MODE 5”: Open loop - has not yet satisfied condition to go to closed loop
CAL/LD VALUE [%]
lThe calculated load value at the moment a malfunction is detected is displayed.
COOLANT TEMP [°C]
or [°F]
lThe engine coolant temperature at the moment a malfunction is detected is displayed.
S-FUEL TRIM-B1 [%]
l“Short-term fuel trim” at the moment a malfunction is detected is displayed.
lThe short-term fuel trim indicates dynamic or instantaneous feedback compensation to the base fuel
schedule.
L-FUEL TRIM-B1 [%]
l“Long-term fuel trim” at the moment a malfunction is detected is displayed.
lThe long-term fuel trim indicates much more gradual feedback compensation to the base fuel schedule
than short-term fuel trim.
ENGINE SPEED
[rpm]
lThe engine speed at the moment a malfunction is detected is displayed.
VHCL SPEED [km/h]
or [mph]
lThe vehicle speed at the moment a malfunction is detected is displayed.
B/FUEL SCHDL
[msec]
lThe base fuel schedule at the moment a malfunction is detected is displayed.
INT/ATEMPSE[°C]
or [°F]
lThe intake air temperature at the moment a malfunction is detected is displayed.

TROUBLE DIAGNOSIS
EC-91
[QR (WITH EURO-OBD)]
C
D
E
F
G
H
I
J
K
L
MA
EC
CLSD THL POS
[ON/OFF]´´lIndicates idle position [ON/OFF] com-
puted by ECM according to the acceler-
ator pedal position sensor signal.
AIR COND SIG
[ON/OFF]´´
lIndicates [ON/OFF] condition of the air
conditioner switch as determined by the
air conditioner signal.
P/N POSI SW
[ON/OFF]´´
lIndicates [ON/OFF] condition from the
park/neutral position (PNP) switch sig-
nal.
PW/ST SIGNAL
[ON/OFF]´´
l[ON/OFF] condition of the power steer-
ing system (determined by the signal
voltage of the power steering pressure
sensor signal) is indicated.
LOAD SIGNAL
[ON/OFF]´´
lIndicates [ON/OFF] condition from the
electrical load signal.
ON ... Rear window defogger switch is
ON and/or lighting switch is in 2nd posi-
tion.
OFF ... Both rear window defogger
switch and lighting switch are OFF.
IGNITION SW
[ON/OFF]´´
lIndicates [ON/OFF] condition from igni-
tion switch.
HEATER FAN SW
[ON/OFF]´
lIndicates [ON/OFF] condition from the
heater fan switch signal.
BRAKE SW
[ON/OFF]´
lIndicates [ON/OFF] condition from the
stop lamp switch signal.
INJ PULSE-B1
[msec]´
lIndicates the actual fuel injection pulse
width compensated by ECM according
to the input signals.lWhen the engine is stopped, a
certain computed value is indi-
cated.
B/FUEL SCHDL
[msec]´
l“Base fuel schedule” indicates the fuel
injection pulse width programmed into
ECM, prior to any learned on board cor-
rection.
IGN TIMING
[BTDC]´
lIndicates the ignition timing computed
by ECM according to the input signals.lWhen the engine is stopped, a
certain value is indicated.
A/F ALPHA-B1 [%]´
lThe mean value of the air-fuel ratio
feedback correction factor per cycle is
indicated.
lWhen the engine is stopped, a
certain value is indicated.
lThis data also includes the data
for the air-fuel ratio learning con-
trol.
CAL/LD VALUE [%]
l“Calculated load value” indicates the
value of the current airflow divided by
peak airflow.
MASS AIRFLOW
[g·m/s]
lIndicates the mass airflow computed by
ECM according to the signal voltage of
the mass air flow sensor. Monitored item
[Unit]ECM
INPUT
SIG-
NALSMAIN
SIG-
NALSCAN
DIAG
SUP-
PORT
MNTRDescription Remarks

EC-94
[QR (WITH EURO-OBD)]
TROUBLE DIAGNOSIS
ACTIVE TEST MODE
Test Item
DTC & SRT CONFIRMATION MODE
SRT STATUS Mode
For details, refer toEC-40, "SYSTEM READINESS TEST (SRT) CODE".
SRT Work Support Mode
This mode enables a technician to drive a vehicle to set the SRT while monitoring the SRT status.
TEST ITEM CONDITION JUDGEMENT CHECK ITEM (REMEDY)
FUEL INJEC-
TION
lEngine: Return to the original
trouble condition
lChange the amount of fuel injec-
tion using CONSULT-II.If trouble symptom disappears, see
CHECK ITEM.
lHarness and connectors
lFuel injectors
lHeated oxygen sensor 1
IGNITION TIM-
ING
lEngine: Return to the original
trouble condition
lTiming light: Set
lRetard the ignition timing using
CONSULT-II.If trouble symptom disappears, see
CHECK ITEM.
lPerform “Idle Air Volume Learn-
ing”.
POWER BAL-
ANCE
lEngine: After warming up, idle
the engine.
lA/C switch “OFF”
lShift lever “N”
lCut off each injector signal one at
a time using CONSULT-II.Engine runs rough or dies.
lHarness and connectors
lCompression
lFuel injectors
lPower transistor
lSpark plugs
lIgnition coils
COOLING FAN
lIgnition switch: ON
lTurn the cooling fan “ON” and
“OFF” with CONSULT-II.Cooling fan moves and stops.
lHarness and connectors
lCooling fan relay
lCooling fan motor
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 injectors
FUEL PUMP
RELAY
lIgnition switch: ON (Engine
stopped)
lTurn the fuel pump relay “ON”
and “OFF” using CONSULT-II
and listen to operating sound.Fuel pump relay makes the operat-
ing sound.lHarness and connectors
lFuel pump relay
PURG VOL
CONT/V
lEngine: After warming up, run
engine at 1,500 rpm.
lChange the EVAP canister purge
volume control solenoid valve
opening percent using CON-
SULT-II.Engine speed changes according to
the opening percent.lHarness and connectors
lSolenoid valve
V/T ASSIGN
ANGLE
lEngine: Return to the original
trouble condition
lChange intake valve timing using
CONSULT-II.If trouble symptom disappears, see
CHECK ITEM.
lHarness and connectors
lIntake valve timing control sole-
noid valve

EC-98
[QR (WITH EURO-OBD)]
TROUBLE DIAGNOSIS
lSpecification data are output/input values which are detected or supplied by the ECM at the connector.
* Specification data may not be directly related to their components signals/values/operations.
i.e. Adjust ignition timing with a timing light before monitoring IGN TIMING, because the monitor may show the specification data in
spite of the ignition timing not being adjusted to the specification data. This IGN TIMING monitors the data calculated by the ECM
according to the signals input from the camshaft position sensor and other ignition timing related sensors.
lIf the real-time diagnosis results are NG and the on board diagnostic system results are OK when diagnosing the mass air flow sen-
sor, first check to see if the fuel pump control circuit is normal.
MONITOR ITEM CONDITION SPECIFICATION
ENG SPEED
lTachometer: Connect
lRun engine and compare tachometer indication with the CONSULT-II
value.Almost the same speed as the
CONSULT-II value.
MAS A/F SE-B1
lEngine: After warming up
lAir conditioner switch: OFF
lShift lever: N
lNo-loadIdle Approx. 1.0 - 1.5V
2,500 rpm Approx. 1.6 - 2.0V
B/FUEL SCHDL
lEngine: After warming up
lShift lever: N
lAir conditioner switch: OFF
lNo-loadIdle 2.5 - 3.5 msec
2,000 rpm 2.5 - 3.5 msec
A/F ALPHA-B1
lEngine: After warming upMaintaining engine speed at 2,000
rpm54% - 155%
COOLAN TEMP/S
lEngine: After warming up More than 70°C(158°F)
HO2S1 (B1)
lEngine: After warming upMaintaining engine speed at 2,000
rpm0 - 0.3V¨Approx. 0.6 - 1.0V
HO2S2 (B1)
lEngine: After warming upRevving engine from idle to 3,000
rpm quickly.0 - 0.3V¨Approx. 0.6 - 1.0V
HO2S1 MNTR (B1)
lEngine: After warming upMaintaining engine speed at 2,000
rpmLEAN¨RICH
Changes more than 5 times dur-
ing 10 seconds.
HO2S2 MNTR (B1)
lEngine: After warming upRevving engine from idle to 3,000
rpm quickly.LEAN¨RICH
VEH SPEED SE
lTurn drive wheels and compare speedometer indication with the CON-
SULT-II value.Almost the same speed as the
CONSULT-II value
BATTERY VOLT
lIgnition switch: ON (Engine stopped) 11 - 14V
ACCEL SEN1
lIgnition switch: ON
(engine stopped)Accelerator pedal: Fully released 0.41 - 0.71V
Accelerator pedal: Fully depressed More than 3.9V
ACCEL SEN2
lIgnition switch: ON
(engine stopped)Accelerator pedal: Fully released 0.15 - 0.97V
Accelerator pedal: Fully depressed More than 3.8V
THRTL SEN1
THRTL SEN2
lIgnition switch: ON
(Engine stopped)Accelerator pedal: Fully released More than 0.36V
lShift lever:
D (A/T model)
1st (M/T model)Accelerator pedal: Fully depressed Less than 4.75V
START SIGNAL
lIgnition switch: ON®START®ON OFF®ON®OFF
CLSD THL POS
lIgnition switch: ONAccelerator pedal: Fully released ON
Accelerator pedal: Slightly depressed OFF
AIR COND SIG
lEngine: After warming up, idle
the engineAir conditioner switch: OFF OFF
Air conditioner switch: ON
(Compressor operates.)ON
P/N POSI SW
lIgnition switch: ONShift lever:
P or N (A/T model)
Neutral (M/T model)ON
Shift lever: Except above OFF

TROUBLE DIAGNOSIS
EC-99
[QR (WITH EURO-OBD)]
C
D
E
F
G
H
I
J
K
L
MA
EC
PW/ST SIGNALlEngine: After warming up, idle
the engineSteering wheel is in neutral position.
(Forward direction)OFF
Steering wheel is turned. ON
LOAD SIGNAL
lIgnition switch: ONRear window defogger switch is ON
and/or lighting switch is in 2nd.ON
Rear window defogger switch is OFF
and lighting switch is OFF.OFF
IGNITION SW
lIgnition switch: ON®OFF®ON ON®OFF®ON
HEATER FAN SW
lEngine: After warming up, idle
the engineHeater fan is operating. ON
Heater fan is not operating OFF
BRAKE SW
lIgnition switch: ONBrake pedal: Fully released OFF
Brake pedal: Slightly depressed ON
INJ PULSE-B1
lEngine: After warming up
lShiftlever:N
lAir conditioner switch: OFF
lNo-loadIdle 2.0-3.0msec
2,000 rpm 1.9 - 2.9 msec
IGN TIMING
lEngine: After warming up
lShiftlever:N
lAir conditioner switch: OFF
lNo-loadIdleMT: 12°-16°BTDC
AT: 1 4°-18°BTDC
2,000 rpm 25°-45°BTDC
CAL/LD VALUE
lEngine: After warming up
lShiftlever:N
lAir conditioner switch: OFF
lNo-loadIdle 10% - 35%
2,500 rpm 10% - 35%
MASS AIRFLOW
lEngine: After warming up
lShiftlever:N
lAir conditioner switch: OFF
lNo-loadIdle 1.0 - 4.0 g·m/s
2,500 rpm 4.0 - 10.0 g·m/s
PURG VOL C/V
lEngine: After warming up
lShiftlever:N
lAir conditioner switch: OFF
lNo-loadIdle 0%
2,000 rpm 20 - 30%
INT/V TIM (B1)
lEngine: After warming up
lShiftlever:N
lAir conditioner switch: OFF
lNo-loadIdle-5°-5°CA
When revving engine up to 2,000 rpm
quicklyApprox. 0°-20°CA
INT/V SOL (B1)
lEngine: After warming up
lShiftlever:N
lAir conditioner switch: OFF
lNo-loadIdle 0% - 2%
When revving engine up to 2,000 rpm
quicklyApprox. 0% - 50%
AIR COND RLY
lEngine: After warming up, idle
the engineAir conditioner switch: OFF OFF
Air conditioner switch: ON
(Compressor operates)ON
FUEL PUMP RLY
lFor 1 seconds after turning ignition switch ON
lEngine running or crankingON
lExcept above conditions OFF
THRTL RELAY
lIgnition switch: ON ON MONITOR ITEM CONDITION SPECIFICATION