sensor NISSAN X-TRAIL 2003 Electronic Repair Manual

TROUBLE DIAGNOSIS
EC-411
[QR (WITHOUT EURO-OBD)]
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EC
Fail-safe ChartEBS00BMW
The ECM enters fail-safe mode, if any of the following malfunctions is detected due to the open or short circuit.
When the ECM enters the fail-safe mode, the MI illuminates.
Priority Detected items (DTC)
1
lU1000 CAN communication line
lP0102 P0103 Mass air flow sensor
lP0117 P0118 Engine coolant temperature sensor
lP0120 Throttle position sensor
lP0121 Accelerator pedal position sensor
lP0327 P0328 Knock sensor
lP0335 Crankshaft position sensor (POS)
lP0340 Camshaft position sensor (PHASE)
lP0500 Vehicle speed sensor
lP0605 ECM
2
lP0134 Heated oxygen sensor 1
lP0550 Power steering pressure sensor
lP0650 MI
lP1065 ECM power supply
lP1122 Electric throttle control function
lP1123 Throttle control motor relay
lP1212 ESP/TCS/ABS communication line
lP1805 Brake switch
3
lP1121 Electric throttle control actuator
lP1217 Engine over temperature (OVERHEAT)
DTC No. Detected items Engine operating condition in fail-safe mode
P0102
P0103Mass air flow sensor circuit Engine speed will not rise more than 2,400 rpm due to the fuel cut.
P0117
P0118Engine coolant tempera-
ture sensor circuitEngine coolant temperature will be determined by ECM based on the time after turning
ignition switch “ON” or “START”.
CONSULT-II displays the engine coolant temperature decided by ECM.
ConditionEngine coolant temperature decided (CONSULT-
II display)
Just as ignition switch is turned
ON or Start40°C (104°F)
More than approx. 4 minutes after
ignition ON or Start80°C (176°F)
Except as shown above40 - 80°C (104 - 176°F)
(Depends on the time)
When the fail-safe system for engine coolant temperature sensor is activated, the cool-
ing fan operates while engine is running.
P0120 Throttle position sensor cir-
cuitECM controls the electric throttle control actuator by regulating the throttle opening to
small range.
Therefore, acceleration will be poor.
Condition Driving condition
When engine is idling Normal
When accelerating Poor acceleration

EC-414
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TROUBLE DIAGNOSIS
6.PERFORM IDLE AIR VOLUME LEARNING
Refer toEC-396, "
Idle Air Volume Learning".
CMPLT or INCMP
CMPLT>>GOTO7.
INCMP >> 1. Follow the construction of “Idle Air Volume Learning”.
2. GO TO 4.
7.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.
Without CONSULT-II
1. Start engine and warm it up to normal operating temperature.
2. Check idle speed.
OK or NG
OK >> GO TO 10.
NG >> GO TO 8.
8.DETECT MALFUNCTIONING PART
Check the Following.
lCheck camshaft position sensor (PHASE) and circuit. Refer toEC-507.
lCheck crankshaft position sensor (POS) and circuit. Refer toEC-501.
OK or NG
OK >> GO TO 9.
NG >> 1. Repair or replace.
2. GO TO 4.
9.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-403, "
NATS
(Nissan Anti-theft System)".
>> GO TO 4. 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-416
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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-507.
lCheck crankshaft position sensor (POS) and circuit. Refer toEC-501.
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-403, "
NATS
(Nissan Anti-theft System)".
>> GO TO 4. M/T: 14±5°BTDC
A/T: 16±5°BTDC (in "P" or "N" position)

TROUBLE DIAGNOSIS
EC-417
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EC
Symptom Matrix ChartEBS00BMY
SYSTEM — BASIC ENGINE CONTROL SYSTEM
SYMPTOM
Reference
page
HARD/NO START/RESTART (EXCP. HA)
ENGINE STALL
HESITATION/SURGING/FLAT SPOT
SPARK KNOCK/DETONATION
LACK OF POWER/POOR ACCELERATION
HIGH IDLE/LOW IDLE
ROUGH IDLE/HUNTING
IDLING VIBRATION
SLOW/NO RETURN TO IDLE
OVERHEATS/WATER TEMPERATURE HIGH
EXCESSIVE FUEL CONSUMPTION
EXCESSIVE OIL CONSUMPTION
BATTERY DEAD (UNDER CHARGE)
Warranty symptom code AA AB AC AD AE AF AG AH AJ AK AL AM HA
Fuel Fuel pump circuit 1 1 2 3 2 2 2 3 2EC-627
Fuel pressure regulator system 3 3 4 4 4 4 4 4 4 4EC-399
Injector circuit 1 1 2 3 2 2 2 2EC-618
Evaporativeemissionsystem 334444444 4EC-647
Air Positive crankcase ventilation sys-
tem334444444 41EC-650
Incorrect idle speed adjustment 3 3 1 1 1 1 1EC-412
Electric throttle control actuator 1 1 2 3 3 2 2 2 2 2 2EC-534
,
EC-536
,
EC-542
Ignition Incorrect ignition timing adjustment 3 3 1 1 1 1 1 1EC-412
Ignition circuit 1 1 2 2 2 2 2 2EC-592
Main power supply and ground circuit 2 2 3 3 3 3 3 2 3EC-454
Mass air flow sensor circuit 1 1 2 2 2 2 2 2EC-463
Engine coolant temperature sensor circuit 1 1 2 2 2 3 2 2 3 1 2EC-470
Throttle position sensor circuit 1 2 2 2 2 2 2 2EC-475
Accelerator pedal position sensor circuit 3 2 1 2 2EC-484
Heated oxygen sensor 1 circuit 1 2 3 2 2 2 2EC-490,
EC-581
Knock sensor circuit 2 2 3EC-496
Crankshaft position sensor (POS) circuit 2 2EC-501
Camshaft position sensor (PHASE) circuit 2 2EC-507
Vehicle speed signal circuit 2 3 3 3EC-513
Power steering pressure sensor circuit 2 3 3 3 3EC-518
ECM 22333333333EC-523,
EC-530
Intake valve timing control solenoid valve cir-
cuit332 13223 3EC-608
PNP switch circuit 3 3 3 3 3 3 3EC-614
Start signal circuit 2EC-623
Refrigerant pressure sensor circuit 2 3 3 3 3 4EC-634

TROUBLE DIAGNOSIS
EC-419
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EC
Air Air duct
55555 5EM-15
Air cleanerEM-15
Air leakage from air duct
(Mass air flow sensor —electric
throttle control actuator)
5555EM-15
Electric throttle control actuatorEM-17
Air leakage from intake manifold/
Collector/GasketEM-17
Cranking Battery
111111 11SC-3
Alternator circuitSC-12
Starter c irc uit 3SC-21
Signal plate 6EM-64
PNP switch
4MT-13or
AT- 3 8 8
Engine Cylinder head
55555 55 5EM-52
Cylinder head gasket 4 3
Cylinder block
66666 66 64
EM-64
Piston
Piston ring
Connecting rod
Bearing
Crankshaft
Va l v e
mecha-
nismTiming chain
55555 55 5EM-43
CamshaftEM-33
Intake valve
3EM-52
Exhaust valve
Exhaust Exhaust manifold/Tube/Muffler/
Gasket
55555 55 5EM-22
,EX-
2Three way catalyst
Lubrica-
tionOil pan/Oil strainer/Oil pump/Oil
filter/Oil gallery/Oil cooler
55555 55 52EM-24
,LU-
9,LU-10,
LU-13
Oil level (Low)/Filthy oilLU-7
SYMPTOM
Reference
page
HARD/NO START/RESTART (EXCP. HA)
ENGINE STALL
HESITATION/SURGING/FLAT SPOT
SPARK KNOCK/DETONATION
LACK OF POWER/POOR ACCELERATION
HIGH IDLE/LOW IDLE
ROUGH IDLE/HUNTING
IDLING VIBRATION
SLOW/NO RETURN TO IDLE
OVERHEATS/WATER TEMPERATURE HIGH
EXCESSIVE FUEL CONSUMPTION
EXCESSIVE OIL CONSUMPTION
BATTERY DEAD (UNDER CHARGE)
Warranty symptom code AA AB AC AD AE AF AG AH AJ AK AL AM HA

EC-430
[QR (WITHOUT 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-431
[QR (WITHOUT EURO-OBD)]
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EC65 RSensor's power sup-
ply[Ignition switch “ON”]Approximately 5V
66 W/LPower supply for
ECM (Buck-up)[Ignition switch “OFF”]BATTERY VOLTAGE
(11 - 14V)
67 PPower steering pres-
sure sensor[Engineisrunning]
lSteering wheel is being turned.0.5 - 4.0V
[Engineisrunning]
lSteering wheel is not being turned.0.4 - 0.8V
71 PU/RCrankshaft position
sensor (POS)[Engineisrunning]
lWarm-up condition
lIdle speedApproximately 3V
[Engineisrunning]
lEngine speed is 2,000 rpmApproximately 3V
72 OR Mass air flow sensor[Engineisrunning]
lWarm-up condition
lIdle speed1.1 - 1.5V
[Engineisrunning]
lWarm-up condition
lEngine speed is 2,500 rpm.1.6 - 2.0V
73 WThrottlepositionsen-
sor 1[Ignition switch "ON"]
lGear position is "D" (A/T model)
lGear position is "1st" (M/T model)
lAccelerator pedal fully releasedMore than 0.36V
[Ignition switch “ON”]
lGear position is "D" (A/T model)
lGear position is "1st" (M/T model)
lAccelerator pedal fully depressedLess than 4.75V
74 GThrottlepositionsen-
sor 2[Ignition switch "ON"]
lGear position is "D" (A/T model)
lGear position is "1st" (M/T model)
lAccelerator pedal fully releasedLess than 4.75V
[Ignition switch “ON”]
lGear position is "D" (A/T model)
lGear position is "1st" (M/T model)
lAccelerator pedal fully depressedMore than 0.36V TER-
MINAL
NO.WIRE
COLORITEM CONDITION DATA (DC Voltage)
PBIB0527E
PBIB0528E

EC-432
[QR (WITHOUT EURO-OBD)]
TROUBLE DIAGNOSIS
75 R/LAccelerator pedal
position sensor 1[Ignition switch "ON"]lAccelerator pedal fully released0.41 - 0.71V
[Ignition switch "ON"]
lAccelerator pedal fully depressedMore than 3.9V
76 B/WAccelerator pedal
position sensor 2[Ignition switch "ON"]
lAccelerator pedal fully released0.09 - 0.48V
[Ignition switch "ON"]
lAccelerator pedal fully depressedMore than 1.9V
80 B/PMass air flow sensor
ground[Engine is running]
lWarm-up condition
lIdle speedApproximately 0V
81 L/B Vehicle speed sensor[Engine is running]
lLift up the vehicle
lVehicle speed is 40 km/h (25MPH)Approximately 2.3V
82 W Knock sensor[Engine is running]
lIdle speedApproximately 2.5V
83 R/LRefrigerant pressure
sensor[Engine is running]
lWarm-up condition
lBoth A/C switch and blower switch are “ON”.
(Compressor operates.)1.0 - 4.0V
84 Y/GIntake air tempera-
ture sensor[Engine is running]Approximately 0 - 4.8V
Output voltage varies with intake
air temperature.
86 LAccelerator pedal
position sensor 2
ground[Ignition switch “ON”]Approximately 0V
90 WAccelerator pedal
position sensor sig-
nal output[Ignition switch "ON"]
lAccelerator pedal fully released0.41 - 0.71V
[Ignition switch “ON”]
lAccelerator pedal fully depressedMore than 3.9V
92 G/WHeated oxygen sen-
sor 1[Engine is running]
lWarm-up condition
lEngine speed is 2,000 rpm.0 - Approximately 1.0V (Periodi-
cally change)
93 BR/YEngine coolant tem-
perature sensor[Engine is running]Approximately 0 - 4.8V
Output voltage varies with
engine coolant temperature.
95 OR/BHeated oxygen sen-
sor 2[Engine is running]
lWarm-up condition
lEngine speed is 2,000 rpm.0 - Approximately 1.0V TER-
MINAL
NO.WIRE
COLORITEM CONDITION DATA (DC Voltage)
PBIB0531E

TROUBLE DIAGNOSIS
EC-435
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EC
ENGINE CONTROL COMPONENT PARTS/CONTROL SYSTEMS APPLICATION
X: Applicable
*1: This item includes 1st trip DTCs.
*2: This mode includes 1st trip freeze frame data or freeze frame data. The items appear on CONSULT-II screen in freeze frame data
mode only if a 1st trip DTC or DTC is detected. For details, refer toEC-402
.
CONSULT-II INSPECTION PROCEDURE
1. Turn ignition switch OFF.
ItemDIAGNOSTIC TEST MODE
WORK
SUPPORTSELF-DIAGNOSTIC
RESULTS
DATA
MONI-
TORDATA
MONI-
TOR
(SPEC)ACTIVE
TEST
DTC*1FREEZE
FRAME
DATA*2
ENGINE CONTROL COMPONENT PARTS
INPUT
Crankshaft position sensor (POS)´´´´
Camshaft position sensor (PHASE)´
Mass air flow sensor´´´
Engine coolant temperature sensor´´´´´
Heated oxygen sensor 1´´´
Heated oxygen sensor 2´´
Wheel sensor (Vehicle speed signal)´´´´
Accelerator pedal position sensor´´´
Throttlepositionsensor´´´
Intake air temperature sensor´´
Knock sensor´
Refrigerant pressure sensor´´
Ignition switch (start signal)´´
Closed throttle position switch (accelera-
tor pedal position sensor signal)´´
Air conditioner switch´´
Park/neutral position (PNP) switch´´
Stop lamp switch´´´
Power steering pressure sensor´´´
Battery voltage´´
Load signal´´
ENGINE CONTROL COMPONENT PARTS
OUTPUT
Injectors´´ ´
Power transistor (Ignition timing)´´ ´
Throttle control motor relay´´´
EVAP canister purge volume control sole-
noid valve´´ ´
Air conditioner relay´´
Fuel pump relay´´´´
Cooling fan relay´´´´
Heated oxygen sensor 1 heater´´
Heated oxygen sensor 2 heater´´
Intake valve timing control solenoid valve´´ ´
Calculated load value´´´

TROUBLE DIAGNOSIS
EC-437
[QR (WITHOUT EURO-OBD)]
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EC
*: 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-379, "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.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. WORK ITEM CONDITION USAGE
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-379, "
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.