key NISSAN NAVARA 2005 Repair Repair Manual

THEFT WARNING SYSTEM
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2. A door is unlocked without using the keyfob.
3. Disconnect and connecting the battery connector before canceling armed phase.
POWER SUPPLY AND GROUND CIRCUIT
Power is supplied at all times
lthrough 10A fuse [No.19, located in the fuse block (J/B)]
lto combination meter (security indicator lamp) terminal 3
lthrough 50A fusible link (letterG, located in the fuse and fusible link box)
lto BCM terminal 57
lthrough 10A fuse [No. 21, located in the fuse block (J/B)]
lto BCM terminal 41
lthrough 15A fuse (No. 30, located in the fuse and fusible link box)
lto horn relay terminal 2
lthrough 20A fuse (No. 52, located in the IPDM E/R)
lthrough 20A fuse (No. 53, located in the IPDM E/R),
lto IPDM E/R internal CPU.
With the ignition switch in the ACC or ON position, power is supplied
lthrough 10A fuse [No. 4, located in the fuse block (J/B)]
lto BCM terminal 4.
Ground is supplied
lto BCM terminal 55
lthrough body grounds M21, M80 and M83
lto IPDM E/R terminals 38 and 59
lthrough body ground E21, E41 and E61.
INITIAL CONDITION TO ACTIVATE THE SYSTEM
The operation of the theft warning system is controlled by the engine hood and doors.
To activate the theft warning system, BCM must receive signals indicating the doors are closed and locked.
When a door is open, BCM terminal 12, 14, 15 or 16 receives a ground signal from each door switch.
When the engine hood is open, IPDM E/R terminal 41 receives a ground signal
THEFT WARNING SYSTEM ALARM OPERATION
The vehicle security system is triggered by
lopening a door
lopening the hood
ldetecting battery disconnect/connection.
The vehicle security system will be triggered once the system is in armed phase,
when BCM receives a ground signal at terminals 12, 14, 15, 16 (door switch) or IPDM E/R receives a ground
signal at terminal 41 (hood switch).
When the vehicle security system is triggered, siren control unit or horn is activate.
The alarm automatically turns off after 30 seconds, but will reactivate if the vehicle is tampered with again.
THEFT WARNING SYSTEM DEACTIVATION
To deactivate the theft warning system, a door must be unlocked with keyfob.
When the BCM receives either one of these signals or unlock signal from keyfob the theft warning system is
deactivated. (Disarmed phase)
CAN Communication System DescriptionEIS00DBY
Refer toLAN-23, "CAN COMMUNICATION".

BL-156
THEFT WARNING SYSTEM
TerminalsandReferenceValueforIPDME/R
EIS00DC3
*: When horn reminder is ON.
CONSULT-II Function (BCM)EIS00DC4
CONSULT-II can display each diagnostic item using the diagnostic test modes shown following.
CONSULT-II INSPECTION PROCEDURE
CAUTION:
If CONSULT-II is used with no connection of CONSULT-II CONVERTER, malfunctions might be
detected in self-diagnosis depending on control unit which carry out CAN communication.
1. Turn ignition switch OFF.
2. Connect CONSULT-II and CONSULT-II CONVERTER to the
data link connector.
3. Turn ignition switch ON.
4. Touch “START (NISSAN BASED VHCL)”.
TerminalWire
ColorItem ConditionVoltage (V)
(Approx.)
38 B Ground — 0
39 L CAN-H — —
40 P CAN-L — —
41 G Engine hood switchON (hood open) 0
OFF (hood close) Battery voltage
45 BR Horn relayWhen doors locks are operated using
keyfob (OFF®ON) *Battery voltage®0
59 B Ground — 0
BCM diagnosis
partDiagnostic mode Description
THEFT ALMWORK SUPPORTSupports inspections and adjustments. Commands are transmitted to the BCM
for setting the status suitable for required operation, input/output signals are
received from the BCM and received data is displayed.
DATA MONITOR Displays BCM input/output data in real time.
ACTIVE TEST Operation of electrical loads can be checked by sending drive signal to them.
BBIA0538E
BCIA0029E

THEFT WARNING SYSTEM
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5. Touch “BCM”.
If “BCM” is not indicated, refer toGI-50, "
CONSULT-II Data Link
Connector (DLC) Circuit".
6. Touch “THEFT ALM” on the “SELECT TEST ITEM” screen.
7. Select diagnosis mode.
“DATA MONITOR”, “ACTIVE TEST” and “WORK SUPPORT”
are available.
CONSULT-II APPLICATION ITEM
Data Monitor
BCIA0030E
LIIA0034E
BCIA0031E
Monitored Item Description
IGN ON SW Indicates [ON/OFF] condition of ignition switch.
ACC ON SW Indicates [ON/OFF] condition of ignition switch in ACC position.
KEY ON SW Indicates [ON/OFF] condition of key switch.
KEYLESS LOCK Indicates [ON/OFF] condition of lock signal from key fob.
KEYLESS UNLOCK Indicates [ON/OFF] condition of unlock signal from key fob.
KEYLESS TRUNK This is displayed even when it is not equipped.
TRUNK OPNR SW This is displayed even when it is not equipped.
TRUNK CYL SW This is displayed even when it is not equipped.
TRUNK OPN MNTR This is displayed even when it is not equipped.
HOOD SW Indicates [ON/OFF] condition of hood switch.
DOOR SW-DR Indicates [ON/OFF] condition of front door switch driver side.
DOOR SW-AS Indicates [ON/OFF] condition of front door switch passenger side.
DOOR SW-RR Indicates [ON/OFF] condition of rear door switch RH.
DOOR SW-RL Indicates [ON/OFF] condition of rear door switch LH.
BACK DOOR SW This is displayed even when it is not equipped.

BL-158
THEFT WARNING SYSTEM
Active Test
Work Support
KEY CYL LK-SW This is displayed even when it is not equipped.
KEY CYL UN-SW This is displayed even when it is not equipped.
CDL LOCK SW Indicates [ON/OFF] condition of lock signal from door lock/unlock switch LH and RH.
CDL UNLOCK SW Indicates [ON/OFF] condition of unlock signal from door lock/unlock switch LH and RH.
AUTO RELOCK This is displayed even when it is not equipped.
GLS BREAK SEN This is displayed even when it is not equipped.Monitored Item Description
Test Item Description
THEFT INDThis test is able to check security indicator lamp operation. The lamp will be turned on when “ON”
on CONSULT-II screen is touched.
FLASHERThis test is able to check theft warning turn signal lamp operation. The turn signal lamp will be
activated on when “ON” on CONSULT-II screen is touched.
VEHICLE SECURITY HORNThis test is able to check theft warning alarm operation. The horns will be activated for 0.5 sec-
onds after “ON” on CONSULT-II screen is touched.
Test Item Description
SECURITY ALARM SET This mode can confirm and change theft warning alarm ON-OFF setting.
THEFT ALM TRGThe switch which triggered theft warning alarm is recorded. This mode is able to confirm and
erase the record of theft warning alarm. The trigger data can be erased by touching “CLEAR” on
CONSULT-II screen.

THEFT WARNING SYSTEM
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Symptom ChartEIS00DC7
*1: Make sure the system is in the armed phase.PROCEDURE
Diagnostic procedure Reference page
SYMPTOM
1Vehicle secu-
rity system
cannot be set
by ····Door switchDiagnostic Procedure 1 (Door, hood and trunk room lamp switch
check)BL-162
Key fob Check remote keyless entry system function.BL-89
BCM If the above systems are “OK”, replace BCM.BCS-17
Security indicator does not turn “ON”.Diagnostic Procedure 2 (Security indicator lamp check)BL-168If the above systems are “OK”, replace BCM.BCS-17
2*1 Vehicle
security sys-
tem does not
alarm when
····Any door is opened.Diagnostic Procedure 1 (Door, hood and trunk room lamp switch
check)BL-162
If the above systems are “OK”, replace BCM.BCS-17
3Vehicle secu-
rity alarm
does not acti-
vate.Horn alarmDiagnostic Procedure 3 (Vehicle security horn alarm check)BL-169If the above systems are “OK”, replace BCM.BCS-17
Turn signal lamp
alarmDiagnostic Procedure 4 (Turn signal lamp alarm check)BL-169
If the above systems are “OK”, replace BCM.BCS-17
4Vehicle secu-
rity system
cannot be
canceled by
····Key fobCheck remote keyless entry system function.BL-89If the above systems are “OK”, replace BCM.BCS-17

BL-170
NATS(NISSAN ANTI-THEFT SYSTEM)
NATS(NISSAN ANTI-THEFT SYSTEM)
PFP:28591
Component Parts and Harness Connector LocationEIS00DAO
NOTE:
If customer reports a “No start” condition, request ALL KEYS to be brought to an NISSAN dealer in
case of a NATS malfunction.
1. Fuse block (J/B) fuse layout 2. Fuse and fusible link box 3. IPDM fuse layout
4. BCM M42, M43, M44
(View with instrument lower
panel LH removed)5. NATS antenna amp M37 6. a: Security indicator lamp
b: Combination meter M23
7. ECM E20 (Engine room)
MIIB1067E

NATS(NISSAN ANTI-THEFT SYSTEM)
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System DescriptionEIS00DAP
NATS (Nissan Anti-Theft System) has the following immobilizer functions:
lSince only NATS ignition keys, whose ID No. s have been registered into the ECM and IMMU of NATS,
allow the engine to run, a vehicle operation without a registered key in NATS 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 per-
formed.
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 cannot 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 in NATS.
If the vehicle owner requests, a maximum of four key IDs can be registered into the NATS components.
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 malfunction, the security indicator lamp lights up as follows.
lNATS trouble diagnoses, system initialization and additional registration of other NATS ignition key IDs
must be performed 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.
lWhen 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 identi-
fication. Therefore, be sure to receive ALL KEYS from vehicle owner.
Condition IGN ON andWith dongle Without dongle
Security indicator Security indicator
NATS malfunction (except dongle unit) is
detected1. 6 times blinking
2. Staying ON after ignition switch is turned ON.Staying ON
Only malfunction of dongle unit is
detected.Staying ON for about 15 minutes after ignition
switch is turned ON.—
Malfunction of NATS and engine related
parts are detected.1. 6 times blinking
2. Staying ON after ignition switch is turned ON.Staying ON
Only engine related part malfunction is
detected.——
Just after initialization of NATS 6 times blinking —

BL-172
NATS(NISSAN ANTI-THEFT SYSTEM)
System Composition
EIS00DAQ
The immobilizer function of the NATS consists of the following:
lNATS ignition key
lMechanical key (with Intelligent Key system)
lNATS antenna amp. located in the ignition key cylinder
lBCM
lEngine control module (ECM)
lDongle unit (RHD models)
lSecurity indicator
NOTE:
The communication between ECM, BCM and/or Intelligent Key unit uses the CAN communication sys-
tem.
ECM Re-communicating FunctionEIS00DAR
Performing following procedure can automatically perform re-communication of ECM and BCM or Intelligent
Key unit, but only when the ECM has been replaced with a new one (*1).
*1: New one means a virgin ECM which has never been energized on-board.
(In this step, initialization procedure by CONSULT-II is not necessary)
NOTE:
lWhen registering new Key IDs or replacing the ECM other than brand new, refer to CONSULT-II
Operation Manual NATS.
lIf multiple keys are attached to the key holder, separate them before work.
lDistinguish keys with unregistered key ID from those with registered ID.
1. Install ECM.
2. Usingaregisteredkey(*2),turnignitionswitchto“ON”.
*2: To perform this step, use the key (except for card plate key) that has been used before performing
ECM replacement.
3. Maintain ignition switch in “ON” position for at least 5 seconds.
4. Turn ignition switch to “OFF”.
5. Start engine.
If engine can be started, procedure is completed.
If engine cannot be started, refer to CONSULT-II Operation Manual NATS and initialize control unit.
SIIA1246E

NATS(NISSAN ANTI-THEFT SYSTEM)
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7. Select “NATS V.5.0”.
If “NATS V5.0” is not indicated, go toGI-50, "
CONSULT-II Data
Link Connector (DLC) Circuit".
8. 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
*: When replace ECM, refer toBL-172, "ECM Re-communicating Function".
NOTE:
lWhen any initialization is performed, all ID previously registered will be erased and all NATS ignition keys
must be registered again.
lThe engine cannot be started with an unregistered key. In this case, the system will show “DIFFERENCE
OF KEY” or “LOCK MODE” as a self-diagnostic result on the CONSULT-II screen.
lIn rare case, “CHAIN OF ECM-IMMU” might be stored as a self-diagnostic result during key registration
procedure, even if the system is not malfunctioning.
PIIA9327E
SEL150X
CONSULT-II DIAGNOSTIC TEST
MODEDescription
C/U INITIALIZATIONWhen replacing any of the following components, C/U initialization and re-registration of all
NATS ignition keys are necessary.
[NATS ignition key/ BCM/ ECM*]
SELF-DIAG RESULTSDetected items (screen terms) are as shown in the chart.
Refer toBL-176, "
NATS SELF-DIAGNOSTIC RESULTS ITEM CHART".

BL-176
NATS(NISSAN ANTI-THEFT SYSTEM)
HOW TO READ SELF-DIAGNOSTIC RESULTS
NATS SELF-DIAGNOSTIC RESULTS ITEM CHART
PIIA1124E
Detected items
[NATS program card screen terms]P No. Code
(Self-diagnostic
result of
“ENGINE”)Malfunction is detected when.....Reference
page
CHAIN OF ECM-IMMU
[P1612]NATS MAL-
FUNCTION
P1612Communication impossible between ECM and BCM
In rare case, “CHAIN OF ECM-IMMU” might be stored
during key registration procedure, even if the system is
not malfunctioning.BL-179
DIFFERENCE OF KEY
[P1615]NATS MAL-
FUNCTION
P1615BCM can receive the key ID signal but the result of ID
verification between key ID and BCM is NG.BL-181
CHAIN OF IMMU-KEY
[P1614]NATS MAL-
FUNCTION
P1614BCM cannot receive the key ID signal.BL-181
ID DISCORD, IMM-ECM
[P1611]NATS MAL-
FUNCTION
P1611The result of ID verification between BCM and ECM is
NG. System initialization is required.BL-184
LOCK MODE
[P1610]NATS 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.
lBCM or ECM’s malfunctioning.BL-187
ECM
[P1616]ECM
P1616ECM ROM is malfunctioning.EC-269
DON'T ERASE BEFORE CHECK-
ING ENG DIAG—All engine trouble codes except NATS trouble code has
been detected in ECM.BL-177