2004 NISSAN TERRANO key

Trouble Diagnosis
The Time Control Unit includes software to help during development testing, manufacturing and service.
It allows the technician to put it into Diagnostic Mode. In this mode, all switch inputs can be tested for conti-
nuity and if so equipped, alarm triggers identified.
When the time control unit is in Diagnostic Mode, the control unit tests the component and indicate the result
by the hazard lamp flashing.
On vehicles with a theft warning system, the TCU will first indicate the source of the last three alarm triggers
by flashing the hazard lamp. (Refer to ªTHEFT WARNING SYSTEMº, EL-243.)
ESTART
NOTE: Before entering diagnostic mode, make sure the vehicle is fully unlocked, the ignition is switched off and the hazard switch is off.
Press the rear defogger switch exactly 6 times within 10 seconds.
FNG The hazard lamp flash at 3 Hz for 1 second to confirm step I.
OK
Within 10 seconds after confirmation of step I, turn the ignition ON.
FNG The hazard lamp flash at 3 Hz for 1 second to confirm step II.
OK
Within 10 seconds after confirmation of step II, turn the ignition off,
remove the ignition key and press the rear defogger switch for at least 5 seconds.
NGThe hazard lamp flash at 3 Hz for 3 seconds to confirm diagnostic mode is entered.
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TIME CONTROL UNIT (TCU)
EL-218
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Checks
Once in Diagnostic Mode (and after identifying the last three alarm triggers in case a theft warning system is
equipped on the vehicle), the following inputs can be tested.
USER ACTIONTCU ReactionCOMPONENT TESTED
Driver's door opened from closed
(all other doors closed) Hazards flash once Driver's door open signal
Passenger or rear door opened from closed
(all other doors closed) Hazards flash once Door open signal for opened door
Driver's door locked from unlocked Hazards flash once Driver's door status signal
Passenger door locked from unlocked Hazards flash once Assist door status signal
Rear doors locked from unlocked
(with ultrasonic model) Hazards flash once Rear doors status signal
Ultrasonics cancel switch is pressed
(with ultrasonic model) Hazards flash once U/S cancel signal
Trunk or back door is opened from closed Hazards flash once Trunk open signal
Hood is opened from closed
(with ultrasonic model) Hazards flash once Hood open signal
Hazard switch is pressed from off Hazards flash once Hazard switch signal
Turn signal switch is moved to left from off Hazards flash once Left turn signal
Turn signal switch is moved to right from off Hazards flash once Right turn signal
Key turned to lock position in door Hazards flash once * Key cylinder lock switch signal
Lighting switch turned 1st position or 2nd
position from off Hazards flash once Tail lamp signal
Key put in ignition cylinder from out Hazards flash once Key in detect signal
Central unlock switch is pressed Hazards flash once Central unlock/Trunk release signal
*) Hazards may flash a second time because of Driver's door status signal change. The min. delay time between flash actions is 100 ms.
In case the system does not operate as described above, check the concerned circuit for open or short.
After completion, the Diagnostic Mode can be switched off by pressing the rear defogger switch or by turning
the ignition to ªONº. The hazard lamp will flash at 3 Hz for 3 seconds to confirm that Diagnostic Mode has
been switched off.
TIME CONTROL UNIT (TCU)
Trouble Diagnosis (Cont'd)
EL-219
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System Description
NATS has the following immobilizer functions:
IThis version of NATS has dongle control unit to improve its anti-theft performance (RHD models). Dongle
control unit has its own ID which is registered into NATS IMMU. So if dongle unit is replaced, initialization
must be carried out.
I When malfunction of dongle unit is detected:
The security indicator lamp illuminates for about 15 minutes after ignition switch is turned to ON.
Ð When dongle control unit has a malfunction, and the indicator lamp is illuminated, engine can not be
started. However engine can be started only one time when security indicator lamp turns off in about
15 minutes after ignition switch is turned to ON.
I Since 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.
I All 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.
I The NATS security indicator (NATS security ind.) blinks when the ignition switch is in ªOFFº or ªACCº
position. Therefore, NATS warns outsiders that the vehicle is equipped with the anti-theft system.
I When NATS detects trouble, the security indicator lamp lights up as follows.
Condition IGN ON and With dongle Without dongle
MIL Security indicator MIL Security indicator
NATS malfunction
(except dongle control
unit) is detected Ð
6 times blinking
Staying ON after ignition
switch is turned ON Ð
Staying ON
Only malfunction of
dongle control unit is
detected. Ð Staying ON for about 15
minutes after ignition
switch is turned ON ÐÐ
Malfunction of NATS and
engine related parts are
detected. Staying ON 6 times blinking
Staying ON after ignition
switch is turned ON Staying ON Staying ON
Only engine related part
malfunction is detected. Staying ON Ð Staying ON Ð
Just after initialization of
NATS Ð 6 times blinking Ð Ð
I
NATS trouble diagnoses, system initialization and additional registration of other NATS ignition key IDs
must be carried out using CONSULT-II hardware and CONSULT-II NATS software.
Regarding the procedures of NATS initialization and NATS ignition key ID registration, refer to CONSULT-II
operation manual, NATS.
I When servicing a malfunction of the NATS (indicated by lighting up of security Indicator Lamp) or
registering another NATS ignition key ID no., it may be necessary to re-register original key iden-
tification. Therefore, be sure to receive all keys and the PIN code from vehicle owner.
NATS (Nissan Anti-Theft System)
EL-222
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System Composition
The immobilizer function of the NATS for Nissan model R20 consists of the following:
INATS ignition key
I NATS immobilizer control unit (NATS IMMU), located in the ignition key cylinder
I Engine control module (ECM)
I Dongle control unit (RHD models)
I NATS security indicator
I NATS audio link
YEL349D
NATS (Nissan Anti-Theft System)
EL-223
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CONSULT-II
CONSULT-II INSPECTION PROCEDURE
1. Turn ignition switch OFF.
2. Connect ªCONSULT-IIº to Data link connector.
3. Insert NATS program card into CONSULT-II.
: Program cardNATS (AEN02C-1)
4. Turn ignition switch ON.
5. Touch ªSTARTº.
6. Perform each diagnostic test mode according to each service procedure.
For further information, see the CONSULT-II Operation Manual,
NATS.
CONSULT-II DIAGNOSTIC TEST MODE FUNCTION
CONSULT-II DIAGNOSTIC TEST
MODE Description
C/U INITIALIZATION When replacing any of the following components, C/U initialization is necessary. [NATS ignition key/IMMU/ECM/Dongle]
SELF-DIAGNOSTIC RESULTS Detected items (screen terms) are as shown in the chart below.
NOTE:
When any initialization is performed, all ID previously regis-
tered will be erased and all NATS ignition keys must be regis-
tered again.
The engine cannot be started with an unregistered key. In this
case, the system may show ªDIFFERENCE OF KEYº or ªLOCK
MODEº as a self-diagnostic result on the CONSULT-II screen.
When initialization is performed for RHD models for Europe,
security indicator will flash six times to demonstrate recogni-
tion of dongle ID.
NRS071
PBR455D
SEL150X
NATS (Nissan Anti-Theft System)
EL-229
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HOW TO READ SELF-DIAGNOSTIC RESULTS
NATS SELF-DIAGNOSTIC RESULTS ITEM CHART
Detected items
(NATS program card screen terms) Malfunction is detected when ... Reference page
CHAIN OF ECM-IMMU Communication impossible between ECM and IMMU EL-234
DIFFERENCE OF KEY IMMU can receive the key ID signal but the result of ID verification between key ID and IMMU
is NG. EL-236
CHAIN OF IMMU-KEY IMMU cannot receive the key ID signal. Or the registered ID signal from dongle unit can not be
received when the IMMU request the ID. EL-237
ID DISCORD, IMM-ECM The result of ID verification between IMMU and ECM is NG. System initialization is required. EL-239
DON'T ERASE BEFORE
CHECKING ENG DIAG All engine trouble codes except NATS trouble code have been detected in ECM. EL-231
LOCK MODE When 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.
I
Unregistered ignition key is used.
I IMMU or ECM is malfunctioning. EL-240
SEL308W
NATS (Nissan Anti-Theft System)
CONSULT-II (Cont'd)
EL-230
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Trouble Diagnoses
WORK FLOW
CHECK IN
Listen to customer complaints or request. (Get symptoms)
TROUBLEKEY SERVICE REQUEST (Additional key ID registration)H
Verify the security indicator and MI*.INITIALIZATION
(Refer to CONSULT-II operation
manual NATS.)
EUsing the CONSULT-II program card for NATS check the
ªSELF-DIAG RESULTSº with CONSULT-II.F
Self-diagnostic results referring to NATS, but no information
about engine self-diagnostic results is displayed on CONSULT-
II.
Turn ignition switch ªOFFº.
Repair NATS.
(If necessary, carry out ªC/U INITIALIZATIONº with CONSULT-
II.)
Turn ignition switch ªONº.
Erase the NATS ªSELF-DIAG RESULTSº by using CONSULT-
II. (Touch ªERASEº.)
Start the engine.
NGVerify no lighting up of the security indicator.
OK
CHECK OUT
Perform running test with CONSULT-II in engine ªSELF-DIAG
RESULTSº mode.
NGVerify ªNO DTC IS DETECTEDº displayed on the CONSULT-II
screen.
OK
CHECK OUT
Self-diagnostic results referring to NATS and ªDON'T
ERASE BEFORE CHECKING ENG DIAGº are displayed on
CONSULT-II.
(This means that engine trouble data has been detected in
ECM.)
Turn ignition switch ªOFFº.
Repair NATS according to self-diagnostic results referring to
NATS.
(If necessary, carry out ªC/U INITIALIZATIONº with CON-
SULT-II.)
Do not erase the NATS ªSELF-DIAG RESULTSº by using
CONSULT-II.
Check the engine ªSELF-DIAG RESULTSº with CONSULT-II
by using the CONSULT-II generic program card.
(Engine diagnostic software included)
OK
F
Repair engine control system (Refer to EC section.) when
self-diagnostic results except ªNATS MALFUNCTIONº are
detected. When only ªNATS MALFUNCTIONº is detected,
erase the self-diagnostic results and go to the next step.
Start the engine. Does the engine start properly?NG
Erase the NATS and engine ªSELF-DIAG RESULTSº by
using the CONSULT-II program card for NATS and generic
program card.
Start the engine.
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NATS (Nissan Anti-Theft System)
EL-231
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SYMPTOM MATRIX CHART 1
(Self-diagnosis related item)
SYMPTOMDisplayed ªSELF-DIAG
RESULTSº on
CONSULT-II screen DIAGNOSTIC
PROCEDURE
(Reference page) SYSTEM
(Malfunctioning part or mode) REFERENCE PART NO.
OF ILLUSTRATION ON NEXT PAGE
I Security indicator light-
ing up*
I Engine does not start CHAIN OF ECM-IMMU
PROCEDURE 1
(EL-234) Open circuit in battery voltage line
of IMMU circuit
C1
Open circuit in ignition line of IMMU
circuit C2
Open circuit in ground line of IMMU
circuit C3
Open circuit in communication line
between IMMU and ECM C4
Short circuit between IMMU and
ECM communication line and bat-
tery voltage line C4
Short circuit between IMMU and
ECM communication line and
ground line C4
ECM B
IMMU A
DIFFERENCE OF KEY PROCEDURE 2
(EL-236) Unregistered key D
IMMU A
CHAIN OF IMMU-KEY PROCEDURE 3
(EL-237) Malfunction of key ID chip E
IMMU A
Open circuit in ground line of
dongle circuit
C6
Open or short circuit in communica-
tion line between IMMU and dongle
control unit C5
Dongle control unit G
ID DISCORD, IMM-ECM PROCEDURE 4
(EL-239) System initialization has not yet
been completed.
F
ECM B
LOCK MODE PROCEDURE 5
(EL-240) LOCK MODE D
I MI staying ON
I Security indicator light-
ing up* DON'T ERASE BEFORE
CHECKING ENG DIAG
WORK FLOW
(EL-231) Engine trouble data and NATS
trouble data have been detected in
ECM.
Ð
*: When NATS detects trouble, the security indicator lights up while ignition key is in the ªONº position.
*: When the vehicle is equipped with dongle control unit (RHD models), the security indicator blinks 6 times just after ignition switch is turned
to ON. Then the security indicator lights up while ignition key is in the ªONº position.
NATS (Nissan Anti-Theft System)
Trouble Diagnoses (Cont'd)
EL-232
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