lights NISSAN X-TRAIL 2003 Electronic Repair Manual

BL-70
NATS (NISSAN ANTI-THEFT SYSTEM)
NATS (NISSAN ANTI-THEFT SYSTEM)
PFP:25386
Component Parts and Harness Connector LocationEIS001RQ
System DescriptionEIS001RR
NATS (Nissan Anti-Theft System) has the following immobilizer functions:
lSince only NATS ignition keys, whose ID nos. have been registered into the ECM and IMMU of NATS,
allow the engine to run, operation of a stolen vehicle without a NATS registered key is prevented by
NATS.
That is to say, NATS will immobilize the engine if someone tries to start it without the registered key of
NATS.
lThis version of NATS has dongle unit to improve its anti-theft performance (RHD models). Dongle unit has
its own ID which is registered into NATS IMMU. So if dongle unit is replaced, initialization must be carried
out.
lWhen malfunction of dongle unit is detected:
The security indicator lamp illuminates for about 15 minutes after ignition switch is turned to ON.
–When dongle unit has a malfunction and the indicator lamp is illuminated, engine can not be started. How-
ever engine can be started only one time when security indicator lamp turns off in about 15 minutes after
ignition switch is turned to ON.
lAll of the originally supplied ignition key IDs have been NATS registered.
If requested by the vehicle owner, a maximum of five key IDs can be registered into the NATS compo-
nents.
lThe security indicator blinks when the ignition switch is in “OFF” or “ACC” position. Therefore, NATS
warns outsiders that the vehicle is equipped with the anti-theft system.
lWhen NATS detects trouble, the security indicator lamp lights up as follows.
PIIA0586E
Condition IGN ON andWith dongle Without dongle
MIL Security indicator MIL Security indicator
NATS malfunction
(except dongle unit) is
detected—1. 6 times blinking
2. Staying ON after igni-
tion switch is turned
ON—StayingON
Only malfunction of don-
gle unit is detected.—Staying ON for about 15
minutes after ignition
switch is turned ON——

BL-78
NATS (NISSAN ANTI-THEFT SYSTEM)
Trouble Diagnoses
EIS001RX
SYMPTOM MATRIX CHART 1
Self-diagnosis related item
*: When NATS detects trouble, the security indicator lights up while ignition key is in the “ON” position.SYMPTOMDisplayed “SELF-DIAG
RESULTS ” on CON-
SULT-II screen.DIAGNOSTIC PROCE-
DURE
(Reference page)SYSTEM
(Malfunctioning part or
mode)REFERENCE PART NO.
OF ILLUSTRATION ON
SYSTEM DIAGRAM
lSecurity indicator
lighting up*
lEngine cannot be
startedECM INT CIRC-IMMUPROCEDURE 1
(BL-80
)ECM B
CHAIN OF ECM-IMMUPROCEDURE 2
(BL-80
)In rare case, “CHAIN OF
ECM-IMMU” might be
stored during key regis-
tration procedure, even if
the system is not mal-
functioning.—
Open circuit in battery
voltage line of IMMU cir-
cuitC1
Open circuit in ignition
line of IMMU circuitC2
Open circuit in ground
line of IMMU circuitC3
Open circuit in communi-
cation line between
IMMU and ECMC4
Short circuit between
IMMU and ECM commu-
nication line and battery
voltage lineC4
Short circuit between
IMMU and ECM commu-
nication line and ground
lineC4
ECM B
IMMU A
DIFFERENCE OF KEYPROCEDURE 3
(BL-82
)Unregistered key D
IMMU A
CHAIN OF IMMU-KEYPROCEDURE 4
(BL-83
)Malfunction of key ID
chipE
IMMU A
Open circuit in ground
line of dongle unit circuitC6
Open or short circuit in
line between IMMU and
dongle unitC5
Dongle unit G
ID DISCORD, IMM-ECMPROCEDURE 5
(BL-85
)System initialization has
not yet been completed.F
ECM B
LOCK MODEPROCEDURE 7
(BL-86
)LOCK MODE D
lMIL staying ON
lSecurity indicator
lighting up*DON'T ERASE
BEFORE CHECKING
ENG DIAGWORK FLOW
(BL-77)Engine trouble data and
NATS trouble data have
been detected in ECM—

NATS (NISSAN ANTI-THEFT SYSTEM)
BL-79
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B
BL
*: When the vehicle is equipped with a dongle unit (RHD models), the security indicator blinks 6 times just after the ignition switch is
turned to ON. Then the security indicator lights up while the ignition key is in the “ON” position.
SYMPTOM MATRIX CHART 2
Non self-diagnosis related item
DIAGNOSTIC SYSTEM DIAGRAM
SYMPTOMDIAGNOSTIC PROCEDURE
(Reference page)SYSTEM
(Malfunctioning part or mode)REFERENCE PART NO. OF
ILLUSTRATION ON SYSTEM
DIAGRAM
Security ind. does not light up.PROCEDURE 6
(BL-85
)Security ind. —
Open circuit between Fuse and
IMMU—
Continuation of initialization
mode—
IMMU A
Security ind. does not blink just
after initialization even if the
vehicle is equipped with don-
gle unit.
PROCEDURE 8
(BL-88
)NATS might be initialized with-
out connecting dongle unit
properly.—
Open circuit in ground line of
dongle unit circuitC6
Security ind. does not blink just
after ignition switch is turned to
ON when some malfunction
related to NATS is detected
even if the vehicle is equipped
with dongle unit.Open or short circuit in commu-
nication line between IMMU
and dongle unitC5
Dongle unit G
SEL028X

EC-36
[QR (WITH EURO-OBD)]
ON BOARD DIAGNOSTIC (OBD) SYSTEM
ON BOARD DIAGNOSTIC (OBD) SYSTEM
PFP:00028
IntroductionEBS00BM5
The ECM has an on board diagnostic system, which detects malfunctions related to engine sensors or actua-
tors. The ECM also records various emission-related diagnostic information including:
The above information can be checked using procedures listed in the table below.
´: Applicable —: Not applicable
*1: 1st trip DTCs for self-diagnoses concerning SRT items cannot be shown on the GST display.
*2: When DTC and 1st trip DTC simultaneously appear on the display, they cannot be clearly distinguished from each other.
The malfunction indicator (MI) on the instrument panel lights up when the same malfunction is detected in two
consecutive trips (Two trip detection logic), or when the ECM enters fail-safe mode. (Refer toEC-62
.)
Two Trip Detection LogicEBS00BM6
When a malfunction is detected for the first time, 1st trip DTC and 1st trip Freeze Frame data are stored in the
ECM memory. The MI will not light up at this stage. <1st trip>
If the same malfunction is detected again during the next drive, the DTC and Freeze Frame data are stored in
the ECM memory, and the MI lights up. The MI lights up at the same time when the DTC is stored. <2nd trip>
The “trip” in the “Two Trip Detection Logic” means a driving mode in which self-diagnosis is performed during
vehicle operation. Specific on board diagnostic items will cause the ECM to light up or blink the MI, and store
DTC and Freeze Frame data, even in the 1st trip, as shown below.
´: Applicable —: Not applicable
*1: Except “ECM”Emission-related diagnostic information ISO Standard
Diagnostic Trouble Code (DTC) Mode 3 of ISO 15031-5
Freeze Frame data Mode 2 of ISO 15031-5
System Readiness Test (SRT) code Mode 1 of ISO 15031-5
1st Trip Diagnostic Trouble Code (1st Trip DTC) Mode 7 of ISO 15031-5
1st Trip Freeze Frame data
Test values and Test limits Mode 6 of ISO 15031-5
Calibration ID Mode 9 of ISO 15031-5
DTC 1st trip DTCFreeze Frame
data1st trip Freeze
Frame dataSRT code Test value
CONSULT-II´´ ´ ´ ´—
GST´´*1´—´´
ECM´´*2 — — — —
ItemsMI DTC 1st trip DTC
1st trip 2nd trip
1st trip
displaying2nd trip
displaying1st trip
displaying2nd trip
display-
ing BlinkingLighting
upBlinkingLighting
up
Misfire (Possible three way cata-
lyst damage) — DTC: P0300 -
P0304 is being detected´———— —´—
Misfire (Possible three way cata-
lyst damage) — DTC: P0300 -
P0304 is being detected——´——´——
Fail-safe items (Refer toEC-62
.) —´——´*1 —´*1 —
Except above — — —´—´´—

EC-38
[QR (WITH EURO-OBD)]
ON BOARD DIAGNOSTIC (OBD) SYSTEM
*1: 1st trip DTC No. is the same as DTC No.
*2: These numbers are prescribed by ISO 15031-5.
*3: In Diagnostic Test Mode II (Self-diagnostic results), these numbers are controlled by NISSAN.
*4: These are not displayed with GST.
*5: When the fail-safe operation occurs, the MI illuminates.
*6: The trouble shooting for this DTC needs CONSULT-II.
*7: Except for M/T models without ESP/TCS/ABS system.
*8: For M/T models with ESP/TCS/ABS system.
*9: When the fail-safe operations for both self-diagnoses occur at the same time, the MI illuminates.
DTC AND 1ST TRIP DTC
The 1st trip DTC (whose number is the same as the DTC number) is displayed for the latest self-diagnostic
result obtained. If the ECM memory was cleared previously, and the 1st trip DTC did not reoccur, the 1st trip
DTC will not be displayed.
If a malfunction is detected during the 1st trip, the 1st trip DTC is stored in the ECM memory. The MI will not
light up (two trip detection logic). If the same malfunction is not detected in the 2nd trip (meeting the required
driving pattern), the 1st trip DTC is cleared from the ECM memory. If the same malfunction is detected in the
2nd trip, both the 1st trip DTC and DTC are stored in the ECM memory and the MI lights up. In other words,
the DTC is stored in the ECM memory and the MI lights up when the same malfunction occurs in two consec-
P0705 0705 PNP SW/CIRC — —´AT- 1 3 0
P0710 0710 ATF TEMP SEN/CIRC — —´AT- 1 3 6
P0720 0720 VEH SPD SEN/CIR AT*9 — —´AT- 1 4 2
P0731 0731 A/T 1ST GR FNCTN — —´AT- 1 5 1
P0732 0732 A/T 2ND GR FNCTN — —´AT- 1 5 8
P0733 0733 A/T 3RD GR FNCTN — —´AT- 1 6 5
P0734 0734 A/T 4TH GR FNCTN — —´AT- 1 7 2
P0740 0740 TCC SOLENOID/CIRC — —´AT- 1 8 1
P0745 0745 L/PRESS SOL/CIRC — —´AT- 1 8 6
P0750 0750 SFT SOL A/CIRC*5 — —´AT- 1 9 3
P0755 0755 SFT SOL B/CIRC*5 — —´AT- 1 9 8
P1065 1065 ECM BACK UP/CIRC — —´EC-256
P1102 1102 MAF SENSOR — —´EC-260
P 1111 1111 I N T / V T IM V / C I R - B 1 — —´EC-266
P1121 1121 ETC ACTR — —´EC-271
P1122 1122 ETC FUNCTION/CIRC — —´EC-273
P1123 1123 ETC MOT RLY/CIRC — —´EC-279
P1143 1143 HO2S1 (B1) — —´*4EC-284
P1144 1144 HO2S1 (B1) — —´*4EC-290
P1146 1146 HO2S2 (B1) — —´*4EC-296
P1147 1147 HO2S2 (B1) — —´*4EC-303
P1212 1212 TCS/CIRC*8 — —´EC-310
P1217 1217 ENG OVER TEMP — —´EC-311
P1610 - P1615 1610 - 1615 NATS MALFUNCTION — —´EC-48
P1705 1705 TP SEN/CIRC A/T*5 — —´AT- 2 0 3
P1706 1706 P-N POS SW/CIRCUIT — —´EC-325
P1760 1760 O/R CLTCH SOL/CIRC — —´AT- 2 0 8
P1805 1805 BRAKE SW/CIRCUIT — —´EC-329
DTC*1
Items
(CONSULT-II screen terms)SRT codeTe s t v a l u e /
Test limit
(GST only)1st trip
DTC*1Reference page
CONSULT-II
GST*2ECM*3

EC-48
[QR (WITH EURO-OBD)]
ON BOARD DIAGNOSTIC (OBD) SYSTEM
5. System readiness test (SRT) codes
6. Test values
7. Others
Actual work procedures are explained using a DTC as an example. Be careful so that not only the DTC, but all
of the data listed above, are cleared from the ECM memory during work procedures.
NATS (Nissan Anti-theft System)EBS00BM8
lIf the security indicator lights up with the ignition switch in
the “ON” position or “NATS MALFUNCTION” is displayed
on “SELF-DIAG RESULTS” screen, perform self-diagnostic
results mode with CONSULT-II using NATS program card.
Refer toBL-70, "
NATS (NISSAN ANTI-THEFT SYSTEM)".
lConfirm no self-diagnostic results of NATS is displayed
before touching “ERASE” in “SELF-DIAG RESULTS” mode
with CONSULT-II.
lWhen replacing ECM, initialization of NATS system and reg-
istration of all NATS ignition key IDs must be carried out
with CONSULT-II using NATS program card.
Therefore, be sure to receive all keys from vehicle owner.
Regarding the procedures of NATS initialization and NATS ignition key ID registration, refer to
CONSULT-II operation manual, NATS.
Malfunction Indicator (MI)EBS00BM9
DESCRIPTION
The MI is located on the instrument panel.
1. The MI will light up when the ignition switch is turned ON without
the engine running. This is a bulb check.
lIf the MI does not light up, refer toDI-39, "WARNING LAMPS",
or seeEC-252
.
2. When the engine is started, the MI should go off.
If the MI remains on, the on board diagnostic system has
detected an engine system malfunction.
ON BOARD DIAGNOSTIC SYSTEM FUNCTION
The on board diagnostic system has the following four functions.
SEF515Y
SAT652J
Diagnostic Test
ModeKEY and ENG.
Statu sFunction Explanation of Function
Mode I Ignition switch in
“ON” position
Engine stoppedBULB CHECK This function checks the MI bulb for damage (blown, open
circuit, etc.).
If the MI does not come on, check MI circuit.
Engine running MALFUNCTION
WARNINGThis is a usual driving condition. When a malfunction is
detected twice in two consecutive driving cycles (two trip
detection logic), the MI will light up to inform the driver that
a malfunction has been detected.
The following malfunctions will light up or blink the MI in
the 1st trip.
l“Misfire (Possible three way catalyst damage)”
lFail-safe mode

EC-118
[QR (WITH EURO-OBD)]
DTC P0011 IVT CONTROL
: Average voltage for pulse signal (Actual pulse signal can be confirmed by oscilloscope.)
On Board Diagnosis LogicEBS00B21
FAIL -S AFE M OD E
When the malfunction is detected, the ECM enters fail-safe mode and the MI lights up.
DTC Confirmation ProcedureEBS00B22
CAUTION:
Always drive at a safe speed.
NOTE:
lIf DTC P0011 is displayed with DTC P1111, first perform trouble diagnosis for "DTC P1111". See
EC-266
.
lIf "DTC Confirmation Procedure" has been previously conducted, always turn ignition switch "OFF" and
wait at least 10 seconds before conducting the next test.
TESTING CONDITION:
Before performing the following procedure, confirm that battery voltage is between 10V and 16V at
idle.
WITH CONSULT-II
1. Turn ignition switch "ON".
TER-
MINAL
NO.WIRE
COLORITEM CONDITION DATA (DC Voltage)
107 Y/RIntake valve timing
control solenoid valve[Engine is running]
lWarm-up condition
lIdle speedBATTERY VOLTAGE
(11 - 14V)
[Engine is running]
lWarm-up condition
lWhen revving engine up to 2,000 rpm quicklyApproximately 4V - BATTERY
VOLTAGE (11 - 14V)
PBIB0532E
DTC No.Trouble diagnosis
nameDetecting condition Possible cause
P0011
0011Intake valve timing
control performanceThere is a gap between angle of target and
phase-control angle degree.
lCrankshaft position sensor (POS)
lCamshaft position sensor (PHASE)
lAccumulation of debris to the signal pick-up
portion of the camshaft
Detected items Engine operating condition in fail-safe mode
Intake valve timing control The signal is not energized to the solenoid valve and the valve control does not function

DTC P0102, P0103 MAF SENSOR
EC-131
[QR (WITH EURO-OBD)]
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On Board Diagnosis LogicEBS00B2P
FAI L-S AFE MO DE
When the malfunction is detected, the ECM enters fail-safe mode and the MI lights up.
DTC Confirmation ProcedureEBS00B2Q
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.
PROCEDURE FOR DTC P0102
With CONSULT-II
1. Turn ignition switch “ON”.
2. Select “DATA MONITOR” mode with CONSULT-II.
3. Start engine and wait 5 seconds at most.
4. If 1st trip DTC is detected, go toEC-133, "
Diagnostic Procedure"
.
With GST
Follow the procedure “With CONSULT-II” above.
PROCEDURE FOR DTC P0103
With CONSULT-II
1. Turn ignition switch “ON”.
2. Select “DATA MONITOR” mode with CONSULT-II.
3. Wait at least 5 seconds.
4. If 1st trip DTC is detected, go toEC-133, "
Diagnostic Procedure"
.
If 1st trip DTC is not detected, go to next step.
5. Start engine and wait at least 5 seconds.
6. If 1st trip DTC is detected, go toEC-133, "
Diagnostic Procedure"
.
With GST
Follow the procedure “With CONSULT-II” above.
DTC No.Trouble diagnosis
nameDTC 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.)
lIntake air leaks
lMass air flow sensor
P0103
0103Mass air flow sensor
circuit high inputAn excessively high voltage from the sensor is
sent to ECM.
lHarness or connectors
(The sensor circuit is open or shorted.)
lMass air flow sensor
Detected items Engine operating condition in fail-safe mode
Mass air flow sensor circuit Engine speed will not rise more than 2,400 rpm due to the fuel cut.
SEF058Y
SEF058Y

DTC P0117, P0118 ECT SENSOR
EC-141
[QR (WITH EURO-OBD)]
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DTC P0117, P0118 ECT SENSORPFP:22630
Component DescriptionEBS00B32
The engine coolant temperature sensor is used to detect the engine
coolant temperature. The sensor modifies a voltage signal from the
ECM. The modified signal returns to the ECM as the engine coolant
temperature input. The sensor uses a thermistor which is sensitive to
the change in temperature. The electrical resistance of the ther-
mistor decreases as temperature increases.

*: These data are reference values and are measured between ECM terminal 93
(Engine coolant temperature sensor) and body 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.
On Board Diagnosis LogicEBS00B33
FAI L-S AFE MO DE
When this malfunction is detected, the ECM enters fail-safe mode and the MI lights up.
SEF594K
Engine coolant
temperature°C(°F)Voltage* V Resistance kW
-10 (14) 4.4 7.0 - 11.4
20 (68) 3.5 2.1 - 2.9
50 (122) 2.2 0.68 - 1.00
90 (194) 0.9 0.236 - 0.260
SEF012P
DTC No.Trouble Diagnosis
NameDTC Detecting Condition Possible Cause
P0117
0117Engine coolant
temperature sen-
sor circuit low inputAn excessively low voltage from the sensor is
sent to ECM.
lHarness or connectors
(The sensor circuit is open or shorted.)
lEngine coolant temperature sensor
P0118
0118Engine coolant
temperature sen-
sor circuit low inputAn excessively low voltage from the sensor is
sent to ECM.
Detected items Engine operating condition in fail-safe mode
Engine coolant temper-
ature 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 Start 40°C(104°F)
More than approx. 4 minutes after ignition ON or
Sta rt80°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 cooling fan operates
while engine is running.

DTC P1102 MAF SENSOR
EC-261
[QR (WITH EURO-OBD)]
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On Board Diagnosis LogicEBS00B7J
FAI L-S AFE MO DE
When the malfunction is detected, the ECM enters fail-safe mode and the MI lights up.
DTC Confirmation ProcedureEBS00B7K
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. Start engine and wait 5 seconds at most.
4. If 1st trip DTC is detected, go toEC-263, "
Diagnostic Procedure"
.
WITH GST
Follow the procedure “With CONSULT-II” above.
DTC No.Trouble diagnosis
nameDTC detecting condition Possible cause
P1102
11 0 2Mass air flow sensor
circuit range/perfor-
mance problemA voltage from the sensor is constantly
approx.1.0V when engine is running.
lHarness or connectors
(The sensor circuit is open or shorted.)
lMass air flow sensor
Detected items Engine operating condition in fail-safe mode
Mass air flow sensor circuit Engine speed will not rise more than 2,400 rpm due to the fuel cut.
SEF058Y