engine NISSAN X-TRAIL 2003 Electronic Repair Manual

BL-76
NATS (NISSAN ANTI-THEFT SYSTEM)
LOCK MODENATS MAL-
FUNCTION
P1610When the starting operation is carried out five or more
times consecutively under the following conditions, NATS
will shift the mode to one which prevents the engine from
being started.
lUnregistered ignition key is used.
lIMMU or ECM's malfunctioning.BL-86
DON'T ERASE BEFORE CHECK-
ING ENG DIAG—All engine trouble codes except NATS trouble code has
been detected in ECM.BL-77
Detected items
(NATS program card screen terms)PNo.Code
(Self-diagnostic
result of
“ENGINE”Malfunction is detected when.....Reference
page

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—

BL-80
NATS (NISSAN ANTI-THEFT SYSTEM)
Diagnostic Procedure 1
EIS001T7
Self-diagnostic results:
“ECM INT CIRC-IMMU” displayed on CONSULT-II screen
1. Confirm SELF-DIAGNOSTIC RESULTS “ECM INT CIRC-IMMU”
displayed on CONSULT-II screen. Ref. part No. B.
2. Replace ECM.
3. Perform initialization with CONSULT-II.
For initialization, refer to “CONSULT-II operation manual NATS”.
Diagnostic Procedure 2EIS001T8
Self-diagnostic results:
“CHAIN OF ECM-IMMU” displayed on CONSULT-II screen
1.CONFIRM SELF-DIAGNOSTIC RESULTS
Confirm SELF-DIAGNOSTIC RESULTS “CHAIN OF ECM-IMMU”
displayed on CONSULT-II screen.
NOTE:
In rare case, “CHAIN OF ECM-IMMU” might be stored during key
registration procedure, even if the system is not malfunctioning.
Is CONSULT-II screen displayed as above?
Yes >>GOTO2
No >> GO TOBL-78, "
SYMPTOM MATRIX CHART 1".
2.CHECK POWER SUPPLY CIRCUIT FOR IMMU
1. Disconnect IMMU connector.
2. Check voltage between terminal 8 of IMMU and body ground with CONSULT-II or tester.
OK or NG?
OK >> GO TO 3
NG >> Check the following
l10A fuse (No. 33, located in the fusible link and fuse
box) – (Gasoline engine)
l10A fuse (No. 43, located in the fusible link and fuse
box) – (Diesel engine)
lHarness for open or short between fuse and IMMU
connector
Ref. Part No. C1
SEL152X
SEL292W
: Battery voltage should exist.
SIIA1234E

NATS (NISSAN ANTI-THEFT SYSTEM)
BL-81
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3.CHECK IGN SW. ON SIGNAL
1. Turn ignition switch ON.
2. Check voltage between terminal 7 of IMMU and body ground with CONSULT-II or tester.
OK or NG?
OK >> GO TO 4
NG >> Check the following
l10A fuse [No. 5, located in the fuse block (J/B)]
lHarness for open or short between fuse and IMMU
connector
Ref. part No. C2
4.CHECK GROUND CIRCUIT FOR IMMU
1. Turn ignition OFF.
2. Check harness continuity between IMMU terminal 4 and body ground.
OK or NG?
OK >> GO TO 5
NG >> Repair harness.Ref. part No. C3
5.CHECK COMMUNICATION LINE OPEN CIRCUIT
1. Disconnect ECM connector.
2. Check harness continuity between ECM terminal 31 (Gasoline engine) or E20 (Diesel engine) and IMMU
terminal 1.
OK or NG?
OK >> GO TO 6
NG >>
lRepair harness or connector.
lRef. part No. C4 : Battery voltage should exist.
SIIA1235E
: Continuity should exist.
SIIA1237E
: Continuity should exist.
SIIA1238E

BL-82
NATS (NISSAN ANTI-THEFT SYSTEM)
6.CHECK COMMUNICATION LINE BATTERY SHORT CIRCUIT
1. Turn ignition ON.
2. Check voltage between ECM terminal 31 (Gasoline engine) or E20 (Diesel engine) or IMMU terminal 1
and body ground.
OK or NG?
OK >> GO TO 7
NG >>
lCommunication line is short-circuited with battery
voltage line or ignition switch ON line.
lRepair harness or connectors.
lRef. part No. C4
7.CHECK COMMUNICATION LINE GROUND SHORT CIRCUIT
1. Turn ignition switch OFF.
2. Check continuity between ECM terminal 31 (Gasoline engine) or E20 (Diesel engine) or IMMU terminal 1
and body ground.
OK or NG?
OK >> GO TO 8
NG >>
lCommunication line is short-circuited with ground
line.
lRepair harness or connectors.
lRef. part No. C4
8.SIGNAL FROM ECM TO IMMU CHECK
1. Check the signal between ECM terminal 31 (Gasoline engine) or E20 (Diesel engine) and ground with
CONSULT-II or oscilloscope when ignition switch is turned “ON”.
2. Make sure signals which are shown in the figure below can be
detected during 750 msec. just after ignition switch is turned
“ON”.
OK or NG?
OK >>lIMMU is malfunctioning.
lReplace IMMU.Ref. part No. A
lPerform initialization with CONSULT-II.
lFor the operation of initialization, refer to “CONSULT-
II Operation Manual NATS”.
NG >>
lECM is malfunctioning.
lReplace ECM.Ref. part No. B
lPerform initialization with CONSULT-II.
lFor the operation of initialization, refer to “CONSULT-II Operation Manual NATS”.
Diagnostic Procedure 3EIS001T9
Self-diagnostic results:
“DIFFERENCE OF KEY” displayed on CONSULT-II screenVoltage: 0V
SIIA1239E
: Continuity should exist.
SIIA1240E
SEL730W

NATS (NISSAN ANTI-THEFT SYSTEM)
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1.CONFIRM SELF-DIAGNOSTIC RESULTS
Confirm SELF-DIAGNOSTIC RESULTS “DIFFERENCE OF KEY”
displayed on CONSULT-II screen.
Is CONSULT-II screen displayed as above?
Yes >>GOTO2
No >> GO TOBL-78, "
SYMPTOM MATRIX CHART 1".
2.PERFORM INITIALIZATION WITH CONSULT-II
Perform initialization with CONSULT-II. Re-register all NATS ignition key IDs.
For initialization and registration of NATS ignition key IDs, refer to “CONSULT-II operation manual NATS”.
NOTE:
If the initialization is not completed or fails, CONSULT-II shows
above message on the screen.
Can the system be initialized and can the engine be started with re-
registered NATS ignition key?
Ye s > >lIgnition key ID was unregistered.Ref. part No. D
No >>
lIMMU is malfunctioning.
lReplace IMMU.Ref. part No. A
lPerform initialization with CONSULT-II.
lFor initialization, refer to “CONSULT-II operation man-
ual NATS”.
Diagnostic Procedure 4EIS001TA
Self-diagnostic results:
“CHAIN OF IMMU-KEY” displayed on CONSULT-II screen
1.CONFIRM SELF-DIAGNOSTIC RESULTS
Confirm SELF-DIAGNOSTIC RESULTS “CHAIN OF IMMU-KEY”
displayed on CONSULT-II screen.
Is CONSULT-II screen displayed as above?
Yes >>GOTO2
No >> GO TOBL-78, "
SYMPTOM MATRIX CHART 1".
SEL367X
SEL297W
SEL292W

BL-84
NATS (NISSAN ANTI-THEFT SYSTEM)
2.CHECK NATS IGNITION KEY ID CHIP
Start engine with another registered NATS ignition key.
Does the engine start?
Ye s > >lIgnition key ID chip is malfunctioning.
lReplace the ignition key.
lRef. part No. E
lPerform initialization with CONSULT-II.
lFor initialization, refer to “CONSULT-II Operation Manual NATS”.
No >>
lModels without dongle unit
–IMMU is malfunctioning.
–Replace IMMU.Ref. part No. A
–For initialization, refer to “CONSULT-II Operation Manual NATS”.
–Perform initialization with CONSULT-II.
lModels with dongle unit
–GO TO 3
3.CHECK HARNESS CONNECTOR CONNECTION
Check harness connector connection between E109 and M80.
Does the engine start?
Yes >> System is OK. (The malfunction is caused by improper connector connection.)
No >> GO TO 4
4.CHECK GROUND CIRCUIT FOR DONGLE UNIT
Check continuity between dongle unit terminal 1 and body ground.
OK or NG?
OK >> GO TO 5
NG >> Repair harness.
5.CHECK INTERFACE CIRCUIT
1. Check continuity between IMMU terminal 2and dongle unit ter-
minal 7.
2. Check continuity between IMMU terminal 2 and body ground.
OK or NG?
OK >> Dongle unit is malfunctioning.
1. Replace dongle unit.
2. Perform initialization with CONSULT-II. For the initial-
ization procedure, refer to “CONSULT-II operation manual NATS.
NG >> Repair harness.: Continuity should exist.
SIIA1241E
: Continuity should exist.
: Continuity should not exist.
SIIA1242E

NATS (NISSAN ANTI-THEFT SYSTEM)
BL-85
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Diagnostic Procedure 5EIS001TB
Self-diagnostic results:
“ID DISCORD, IMM-ECM” displayed on CONSULT-II screen
1.CONFIRM SELF-DIAGNOSTIC RESULTS
Confirm SELF-DIAGNOSTIC RESULTS “ID DISCORD, IMM-ECM” displayed on CONSULT-II screen.
NOTE:
“ID DISCORD IMMU-ECM”:
Registered ID of IMMU is in discord with that of ECM.
Is CONSULT-II screen displayed as above?
Yes >>GOTO2
No >> GO TOBL-78, "
SYMPTOM MATRIX CHART 1".
2.PERFORM INITIALIZATION WITH CONSULT-II
Perform initialization with CONSULT-II. Re-register all NATS ignition key IDs.
For initialization, refer to “CONSULT-II operation manual NATS”.
NOTE:
If the initialization is not completed or fails, CONSULT-II shows
above message on the screen.
Can the system be initialized?
Ye s > >lStart engine. (END)
l(System initialization had not been completed.Ref.
pa rt N o. B)
No >>
lECM is malfunctioning.
lReplace ECM.Ref. part No. B
lPerform initialization with CONSULT-II.
lFor initialization, refer to “CONSULT-II operation manual NATS”.
Diagnostic Procedure 6EIS001TC
“SECURITY INDICATOR LAMP DOES NOT LIGHT UP”
1.CHECK FUSE
Check 10A fuse [No. 28, located in the fuse block (J/B)].
Is 10A fuse OK?
Yes >>GOTO2
No >> Replace fuse.
SEL958W
SEL297W

BL-86
NATS (NISSAN ANTI-THEFT SYSTEM)
2.CHECK SECURITY INDICATOR LAMP
1. Install 10A fuse.
2. Perform initialization with CONSULT-II.
For initialization, refer to “CONSULT-II Operation Manual NATS”.
3. Turn ignition switch OFF.
4. Start engine and turn ignition switch OFF.
5. Check the security indicator lamp lighting.
Security indicator lamp should be light up.
OK or NG?
OK >> INSPECTION END
NG >> GO TO 3
3.CHECK SECURITY INDICATOR LAMP POWER SUPPLY CIRCUIT
1. Disconnect security indicator lamp connector.
2. Check voltage between security indicator lamp connector terminal 2 and body ground.
OK or NG?
OK >> GO TO 4
NG >> Check harness for open or short between fuse and
security indicator lamp.
4.CHECK SECURITY INDICATOR LAMP
Check security Indicator Lamp.
Is security indicator lamp OK?
Yes >>GOTO5
No >> Replace security indicator lamp.
5.CHECK IMMU FUNCTION
1. Connect IMMU connector.
2. Disconnect security indicator lamp connector.
3. Check continuity between IMMU terminal 5 and body ground.
OK or NG?
OK >> Check harness for open or short between security indi-
cator lamp and IMMU.
NG >>
lIMMU is malfunctioning.
lReplace IMMU.Ref. part No. A
lPerform initialization with CONSULT-II.
lFor initialization, refer to “CONSULT-II operation man-
ual NATS”.
Diagnostic Procedure 7EIS001TD
Self-diagnostic results:
“LOCK MODE” displayed on CONSULT-II screen: Battery voltage should exist.
SIIA1243E
: Continuity should exist intermittently.
SIIA1244E

NATS (NISSAN ANTI-THEFT SYSTEM)
BL-87
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1.CONFIRM SELF-DIAGNOSTIC RESULTS
Confirm SELF-DIAGNOSTIC RESULTS “LOCK MODE” is displayed
on CONSULT-II screen.
Is CONSULT-II screen displayed as above?
Yes >>GOTO2
No >> GO TOBL-78, "
SYMPTOM MATRIX CHART 1".
2.ESCAPE FROM LOCK MODE
1. Turn ignition switch OFF.
2. Turn ignition switch ON with registered key. (Do not start engine.) Wait 5 seconds.
3. Return the key to OFF position.
4. Repeat steps 2 and 3 twice (total of three cycles).
5. Start the engine.
Does engine start?
Ye s > >lSystem is OK.
l(Now system is escaped from “LOCK MODE”.)
No >> GO TO 3
3.CHECK IMMU ILLUSTRATION
Check IMMU installation. Refer toBL-89, "
How to Replace NATS IMMU".
OK or NG?
OK >> GO TO 4
NG >> Reinstall IMMU correctly.
4.PERFORM INITIALIZATION WITH CONSULT-II
Perform initialization with CONSULT-II.
For initialization, refer to “CONSULT-II operation manual NATS”.
NOTE:
If the initialization is not completed or fails, CONSULT-II shows the
above message on the screen.
Can the system be initialized?
Ye s > > S y s t e m i s O K .
No >> GO TO 5
SEL960W
SEL297W