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ii, sO NISSAN NORTH AMERICA, INC.

Copyright @)
@ SERVICE BULLETIN
Clazsttication: Gate:
EL99-020¢ | NTBSo-063c November 20, 2002
ENGINE WILL NOT START
NVIS/NATS SYSTEM DESCRIPTION
KEY REGISTRATION

This bulletin amends NTBS8-063b updated Applied Vehicie information.

Please discard all paper coples of that bulletin.

APPLIED VEHICLE(S): 2000 - 2001 Altima (L30}
2000 - 2003 Maxima {A33)
1999 Maxima {A32}
1999.5 — 2003 Pathfinder (A50)
2000 - 2003 Sentra (815)

APPLIED VINS: All
APPLIED DATES: Start of production
SERVICE INFORMATION

¢ = This bulletin covers two versions of the Nissan Vehicle immobilizer SystenvNissan Anti-
Theft System (NVIS/NATS}. One of these systems, referred to as either “NATS V 2.0"
of “NATS V 5.0”, is standard equipment on the Applied Vehicles Ilsted above.

« NATS uses advanced anti-theft functions and requires CONSULT-II or CONSULT
(where applicable) for service. This helps prevent “unauthorized access” into the NATS
registration procedure.

e When the NATS ignition key, IMM (Immobilizer control unit), or EGM (ECCS control
unit} are replaced, C/U initialization is necessary. It is also necessary when registering
keys and as part of many NATS Services Manual diagnostic procedures.

IMPORTANT: The NATS “C/U Initialization and Key Registration” Procedures in
this bulletin are only for the Applied Vehicles listed above. Do not use these
procedures on any other NATS-equipped vehicles,

» NATS V2.0 and NATS Y 5.0 are very similar except for the “C/U Initialization and
Key Registration” Procedure. Each Version uses a different Procedure.

Ve

Special Service Notes:

Key Registration Required

e NATS will net allow the engine to start without the use of a registered ignition key.
Nissan models with NATS have a “transponder chip” in the ignition key head.

« Ifa vehicle will not start and the Dash Security lamp Is ON solld, It is pessible that the
ignition keys were not properly registered into the vehicle's Immobilizer contro! unit
(IMMU}.

e When the NATS ignition key or IMMU are replaced, ¢/U Initialization and Key
Registration MUST BE PERFORMED or THE VEHICLE WILL NOT START. This same
procedure ls also needed when registenng new keys. It is part of many NATS Service
Manual diagnostic procedures.

« If any ignition keys need to be ackded or if any ignition key needs to be re-registered,
ALL other ignition keys must be i 6 Same time or ill no longer

start the vehicle.
Other Important Infomation

« The NATS key code is pennanently encoded to the NATS key ID chip at the time of its
manufacture and cannot be changed. Recommend only using Nissan service parts
(key blanks}.

® NATS does not activate the vehicle theft waming system.
* A maximum of five ignition keys can be registered to the NATS.

NOTE: The Owner's Manual far the vehicle you are working on can tell you how many
keys came with the vehicle. This number varies from vehicle to vehicle.

Transponders

« HaNATS-equipped vehicle experiences an Intermittent no start incident, interfarance )
from another transponder could also be the cause. .

e Other vehicle ignition keys that have transponders or ~—n |
transponders such as the Mobil Speedpass® (see right) Zz
may be 4 source of interference. They may be too clase
(3/4 to 1 inch) to the registered key being used to start the
vehicle.

« Inthese cases, there will ba a "DIFFERENCE OF KEY" coda stored in the Engine
Control Module (ECM). The MIL will not tum "ON" for this.

« Once the vehicle is started, transponder interference will not cause the engine to stall.

« To avold transponder interference occurrences, advise the customer to keep all
other transponders on separate key rings.

ae

System Componenits

© © NATS ignition key (with transponder chip).
e NATS antanna amplifier located around the ignition key cylinder.
e NATS Immobilizer control unit (works directly with ECM).

« Security Indicator (Light Emitting Diode, or LED), located on the dash.

NATS Secusity indicator (LED)

Anon Ap.

NATS IMR ECM

TPSaca11

System Operation

« The NATS uses a digital radio frequency (AF) to transmit a key code between the NATS
key ID chip (which is "embedded" in tha NATS ignition key) and the IMMU. Whena
registered NATS key transmits a valid code, the ECM will allow the engine to start.

« = If the corract code Is not received, the IMML will not transmit a valid code to the ECM.
In which case the ECM will not let the engine start.

CONSULT-II NATS Program Card / NATS-E880U CONSULT Program Card usages:

* For CONSULT-II use the NATS Program Card. CONSULT-il is fully compatible with
earty and later vehicles. This is the preferred tool for this procedure.

¢ CONSULT is not compatible with some later vehicles. If CONSULT can and Is to be
used, tha NATS-ES80U CONSULT program card must be loaded into CONSULT and

initialized. The card must remain in CONSULT while servicing and diagnosing the NV1S
or registering keys.

SERVICE PROCEDURE

Precautions prior to registration:

« Collect all existing ignition keys from the customer.

Note: ANY KEYS THAT ARE NOT REGISTERED AT THIS TIME WILL NO LONGER
START THE VEHICLE.

e Separate all NATS ignition keys and other transponders away from each other (take
them off the key ring). Keep them separate during the whole key registration process.

e Do not "crank" the engine/operate the starter during the Key Registration Procedure.

e PF In initialization and registation ma NATS DOTC's stored in
THE DTG’s BY PRESS

NAG ISTIC RESULTS DISPLAY OF CONSULT (stap 7 in Key Confirmation, betow).

* Kis recommended that you read through the antira service procedure before doing it
for the first time.

NATS C/U Initialization and Key Hegistration Procedures:

This is sections divided into two procedures, NATS V 2.0 and NATS ¥V 5.0.

Use the descriptions below to find which procedure applies to the vehicle being serviced.

Procedure 1: NATS V 2.0
For 2000 Altima (except CA-spec A/T vehicles built after VIN 1N4DL01D7¥C245260),

1999 Maxima,

1999.5 — 2000 Pathfinder.

Procedure 2; NATS V 5.0
For 2000 Altima CA-spac A/T vehicles bullt after VIN 1N4DL01D7YC245260,
2001 Altima,

2000 - 2009 Maxima,

2000 - 2003 Sentra,

2001-2006 Pathfinder.

Procedure 1; NATS V 2.0
For 2000 Altima (except CA-spec A/T vehicles bullt after VIN 1N4DL01D7¥C245260),
1999 Maxima, 1999.5 ~- 2000 Pathfinder,

Registration:

1. Verify NATS software card is installed into sottware sioct of the CONSULT-II unit. If
CONSULT can andis being used, load and use the E980U (purple) card.

2. Geonnect CONSULT or CONSULT-II fo the data link connector under the dash.

3. Ingert the ignition kay and tum it to the "ON" position. Do not start the engine.
CONSULT or CONSULT-II will load the NATS software automatically. Wait for the
START box to appear on CONSULT or CONSULT-II before proceeding.

4. Press the START box.

5, Select NATS V 2.0 if using CONSULT-IL. If you are using CONSULT proceed to step 6.

Select C/U INTIALIZATION.

4 &

Prass the START box on CONSULT or CONSULT-II.

8. When C/U Initialization Is completed for IMMU, tum key (1st key) to “OFF/LOCK"
position and pullit out. Keep this first key separate from ALL the other keys for
right new. It will be used later in step 12 below. WAIT AT LEAST 5 SECONDS, then

go to step 9.

NOTE:
* The key that was just used is automatically registered at this stage.

» During this process do not mix up the "registered" keys and tha “unregistered” keys.
Keep them in different piles during this process. Accidentally inserting a key at this

point that is already "registered" will drop the system out of the registration mode. li
that happens you will have to start all over again and go back to step 3 above.

9. Insert the next key to be registered Into the ignition anc tum the key to the "ON"
position. Do net start the engine.

10.Walt at least 5 seconds {for example, until the Air Bag light goes out), turn the key to
"OFF/LOCK’ and remove it

11.Repeat staps 9 and 10 for all remaining "unregistered" keys needing to be registered
inte the system. Aemember, a maximum of five keys can be registered.

12. After registering and removing the last kay, re-insert the first key registered and turn it to
the "ON" position. This will take the system out of the key registration mode.

13. Tum the key to "OFF" and remove the key.

Procedure 1; NATS V 2.0 (cont.)
For 2000 Altima (except CA-apec A/T vehicles bullt after VIN 1IN4DL01D7YC245260),
1999 Maxima, 1999.5 — 2000 Pathfinder.

14. Wait for the Security Lamp to start to blink (approximately 5 seconds). This will indicate
that the system has reset. Proceed to Key Confirmation.

15. If INITIALIZATION STOPPED or FAILED is displayed on CONSULT or CONSULT-!I
during the above procadure:

a. Perform NATS SELF DIAGNOSIS. Aepair any codes indicated.
b. Once NO SELF DIAGNOSIS FAILURE INDICATED is displayed, retum to step 3
above. -
Key Confirmation:

1. Confirm that the NATS security indicator is blinking. This verifies the cornpletion of the
Key ID Registration sequence.

2. Insert each kay that was initialized during the Key Reglstration process and confirm that
ALL the keys will successfully start the vehicle. Wait for the system to resat In
between each key check (see NOTE, below}. Watch for the Security Lamp to begin
blinking (approximately 5 seconds) between each confirmation of key operation,
indicating the system has reset.

NOTE: You must walt for the system to reset between each key check or kay
operation will not be confined.

3. Prass BAGK on the CONSULT or CONSULT-II screen.

4, Press BACK on the CONSULT or CONSULT-II screen again.

5. Put any registered kay Into the ignition and tum it to the "ON" position.

6. Select SELF-DIAGNOSIS RESULTS to check for DTC's.

7. Press the ERASE box in SELF DIAG RESULTS to clear any DTC's set prior to repairs.
8. Tum ignition kay to "OFF/LOCK" and remove it.

9. Tum off the CONSULT or CONSULT-II, disconnect the Data Link Connector and
remove CONSULT or GONSULT-I from the vehicle.

>See

Procedure 2; NATS V 5.0
For 2000 Altima CA-spec A/T vehicles bullt after VIN 1N4DL01D7YC245260, 2001
Altima, 2000 - 2003 Maxima, 2000 - 2003 Sentra, 2001-2003 Pathfinder.

Registration:

1. Verify NATS software card is installed Into software slot of thea CONSULT-II unit.

2. Connect CONSULT-II to the data link connector under the dash.

3. Insert the ignition key and tum it te the "ON" position. Do not start the angine.
CONSULT-II will load the NATS software automatically. Wait for the START box to
appear on GONSULT-I| before proceeding.

Press the START box.

Select NATS V 5.0.

a mm -F

Select C/U INTIALIZATION.
7. Input Password (PIN Code}: 5523 {for North America)
&. Press the START box on CONSULT-I.

9. When C/U Inifialization is completed for IMMU, tum kay to "OFF/LOCK" position and
pull it out. WAIT AT LEAST 5 SECONDS, then go to step 10.

NOTE: The key that was just used is NOT yet registered at this stage.

10. Insert the first key to be registered into the ignition and tum the key to the "ON" position.
Do not start the engine.

11, Wait at least 5 seconds (for example, until the Air Bag light goas out), turn the key to
"OFF/LOCK" and ramove it. Keep thig first key separate from ALL the other keys for
right now. It will be used later in step 13 below.

NOTE: During this process do not mix up the "registered" keys and the “unregistered”
keys. Keep them in different piles during this process. Accidentally inserting a key at

this polnt that is already "reglstered" will drop the system out of the registration mode. If
that happens you will have to start all over again and go back to step 3 above.

12. Repeat steps 10 and 17 for all remaining "unragistered* keys needing to be registered
into the system. Remember, a maximum of five kays can be registered.

13. After registering and removing the last key, re-insert the first key registered and tum the
key to the "ON" position. This wil take the system out of tne key registration mode.

14. Tum the key to "OFF" and remove the key.

15. Wart for the Security Lamp to start to blink (approximately 5 seconds). This will indicate
that the system has reset. Proceed to Key Confirmation.

THB,

7.

Procedure 2; NATS V 5.0 (cont)
For 2000 Altima CA-spac A/T vehicles built after VIN 1N4DL01D7Y¥C245260, 2001
Altima, 2000 - 2003 Maxima, 2000 - 2003 Sentra, 2001-2003 Pathfinder.

16. If INITIALIZATION STOPPED or FAILED ts displayed on GONSULT-II during the above

procedure:

a. Perform NATS SELF DIAGNOSIS. Repair any codes indicated.
b. Once NO SELF DIAGNOSIS FAILURE INDICATED is displayed, retum to step 3

above.

Key Confirmation:

1.

hb 6

MA

Confirm that the NATS security indicator ts bilnking. This variflas the complation of the
Key ID Registration sequence.

Insert each key that was Initiallzed during the Key Registration process and confirm that
ALL the keys will successfully start the vehicle. Walt for the system to reset In
between each key check (see NOTE, helow}. Watch for the Security Lamp to begin
blinking (approximately 5 seconds) between each confirmation of key operation,
indicating the system has reset.

NOTE: You must wait for the system to reset between each key check or key
operation will not be confirmed.

Press BACK on the CONSULT-II screen.

Press BACK on the CONSULT-II screen again.

Put any registered key into the ignition and turn it to the "ON" position.

Select SELF-DIAGNOSIS RESULTS to check for DTC's.

In rare cases "CHAIN OF ECM-IMMU?" is stored during the Key Registration process.
Press the ERASE box ff It appears in SELF DIAG RESULTS to clear this code or any
DTC's set prior to repairs.

Tum ignition key to "OFF/LOCK" and remove It

Tum off the GONSULT-II, disconnect the Data Link Connector and remove CONSULT-II
from the vehicle,