Antitheft System - Vehicle No Start
Classification:EL03-007b
Reference:
NTB03-031b
Date:
November 11, 2004
ENGINE WILL NOT START NVIS/NATS SYSTEM DESCRIPTION/KEY REGISTRATION
This version of NTB03-031 amends the Applied Vehicles. Please discard all paper copies of the earlier versions.
APPLIED VEHICLES:
2005 and later Altima (L31), Pathfinder (R51), Frontier (D40), Xterra (N50), 350Z (Z33)
2004 and later Maxima (A34), Quest (V42), Armada (TA60), Titan (A60), Murano (Z50)
2004 350Z (Z33) built after the following:
Date: October 13, 2003
VIN:
JN1AZ34D(*)4T 160007
JN1AZ34D(*)4T 060009
JN1AZ36D(*)4T 110005
JN1AZ36A(*)4T 010006
NOTE:
^ For 2003 Murano, and 2003-2004 350Z built before the above Date and VIN's, see NTB02-071
^ This bulletin does NOT cover 2002-2004 Altima.
SERVICE INFORMATION
^ This bulletin covers the latest version of the Nissan Vehicle Immobilizer System/Nissan Anti-Theft System (NVIS/NATS). This system, referred to as "NATS", is standard equipment on the Applied Vehicles listed above.
^ This version of NATS uses advanced anti-theft functions which are "password protected". This helps prevent "unauthorized access" into the NATS registration procedure.
^ To obtain the password from ASIST, first use CONSULT-II to get the "BCM-specific" 5-digit number (PIN) code from the vehicle.
^ Unlike earlier NATS systems, this NATS system DOES NOT need to be Re-Initialized if the Electronic Control Unit (ECM) is replaced.
NOTE:
The ECM and Body Control Module (BCM) do work together, but the BCM in this system controls the information necessary to "tell" the ECM to start the vehicle.
IMPORTANT:
The NATS Procedure in this bulletin is for the Applied Vehicles only. Do not use this procedure on other NATS-equipped vehicles.
System Components (see Figure 1)
^ NATS ignition key (with transponder chip).
^ NATS antenna amplifier located around the ignition key cylinder.
^ Body Control Module (BCM)
^ Engine Control Module (ECM)
^ Security indicator (Light Emitting Diode, or LED) located on the dash.
System Operation
^ The NATS uses a digital radio frequency (RF) to transmit a key code between the NATS key ID chip (which is "embedded" in the NATS ignition key) and the BCM.
^ When a registered NATS key transmits a "valid" (good) key code, the BCM will send a signal to the ECM that will allow the engine to start.
^ If the key doesn't "send" a good code, the BCM will not transmit a valid code to the ECM and the ECM will not let the engine start.
Special Service Notes:
Key Registration Required
^ NATS will not allow the engine to start without the use of a registered ignition key.
^ Previous and current Nissan models with NATS have a "Key I.D. chip" in the ignition key head (see Figure 2).
^ If a vehicle will not start and the Dash Security Lamp is ON solid, it is possible that the ignition keys were not properly registered into the vehicle's Body Control Module (BCM).
^ When a NATS ignition key is replaced, a new key added, or the BCM is replaced, the Control Unit (C/U) Initialization and Key Registration MUST BE PERFORMED or THE ENGINE WILL NOT START.
^ If a new ignition key(s) needs to be added or if any ignition key needs to be re-registered, ALL other ignition keys must be re-registered at the same time or they will no longer start the engine.
Other Important Information
^ When a NATS key is manufactured, the NATS key code is permanently encoded to the NATS key ID chip. This code cannot be changed.
^ It is recommend to use only Nissan service parts (key blanks).
^ NATS only allows the vehicle to start. It does not activate the vehicle theft warning system.
^ Each vehicle is supplied from the factory with three registered NATS ignition keys. A maximum of five ignition keys can be registered to the NATS.
Transponders
^ If a NATS-equipped vehicle experiences an intermittent "no-start" condition, another "transponder" could be causing "interference" (blocking the signal).
Examples of transponder interference:
> Other vehicle ignition keys that have transponders ("key I.D." chips). Either from the same vehicle or another model.
> Transponders such as the Mobil Speedpass(R) may be a source of interference (see Figure 3).
> These items may be too close (3/4 to 1 inch) to the registered key that is being used to start the vehicle.
> In cases of interference from other keys or transponders, there will be a "DIFFERENCE OF KEY" code stored in the Engine Control Module (ECM). The MIL will not turn "ON" for this code.
> Once the vehicle is started, transponder interference will not cause the engine to stall.
> To avoid transponder interference, advise the customer to keep all other transponders on separate key rings.
SERVICE PROCEDURE
NATS C/U Initialization (using the 4-Digit PIN Code) and Key Registration
It is highly recommended that you read through the entire service procedure before doing it for the first time.
1st step; Prepare
1. Collect all existing ignition keys from the customer.
NOTE:
ANY KEYS THAT ARE NOT REGISTERED AT THIS TIME WILL NO LONGER START THE VEHICLE.
2. Separate all NATS ignition keys and other transponders away from each other.
^ Take them off the key ring.
^ You must keep them separate during the whole key registration process.
2nd step; Get the "BCM-specific" 5-Digit Number Code
1. Insert the NATS (purple) Program Card into slot A of the CONSULT-II (see Figure 4).
2. Connect CONSULT-II to the vehicles data link connector.
^ Use the CONSULT-II CAN converter and cable set to do this.
3. Insert a key into the ignition and turn the Ignition ON. Do Not start the engine.
4. Wait for the CONSULT-II system software to "load". Then select the information shown on the CONSULT-II screen.
5. Take the printout and go to an ASIST terminal to "decode" the BCM-Specific 5-digit code.
3rd step; Decode the number
1. From the ASIST Main Menu screen, click on "Information Tool Box."
2. From the "Information Tool Box" screen, click on the "NATS Decoder" button (see Figure 5).
3. Follow the steps in Figure 6, shown.
NOTE:
The letter "O" is not used in the 5-digit number code. Anything that looks like an "O" is really the number zero "0".
4th step; C/U Initialization Procedure
1. Select [BACK] twice on the CONSULT-II screen. It should return to the SELECT SYSTEM screen.
2. Select [NATS V 5.0].
3. Touch [C/U INITIALIZATION].
4. On the CONSULT-II "IMMU INITIALIZATION" touch screen:
^ Type in the 4-digit PIN.
^ You wrote it down from ASIST IVIS/NVIS (NATS) screen (step 3).
5. Touch [START] on CONSULT-II to perform C/U INITIALIZATION.
6. When C/U INITIALIZATION is complete:
a. "INITIALIZATION COMPLETED" will be displayed on the IMMU INITIALIZATION screen.
b. Turn ignition key to the "OFF/LOCK" position and pull it out.
c. WAIT AT LEAST 5 SECONDS.
d. Go to 5th step; Key Registration.
NOTE:
The key that you just used is NOT registered yet.
5th step; Key Registration
1. Insert a key into the ignition and turn it to the "ON" position.
Do not start the engine.
2. Wait at least 5 seconds (the Security Lamp will flash 5 times, then it will stop).
3. Turn the key to "OFF/LOCK" and remove it.
^ The key is now registered.
^ Keep it separate from the other keys.
IMPORTANT:
Keep the first REGISTERED key separate from ALL the other keys for right now. DO NOT MIX UP KEYS!
NOTE:
^ The first registered key will be used later in step 4 (below). Keep it separate from all other keys.
^ Keep the "registered" keys and the "unregistered" keys in different "piles" during this process.
^ Accidentally inserting an already "registered" key into the ignition at this point will drop the system out of the registration mode.
^ If this happens you will have to start all over again. Go back to # 1 of 4th step (C/U Initialization); and restart from there.
4. Repeat steps 1, 2 and 3 (In 5th step) for all remaining "unregistered" keys.
^ Remember, a maximum of five keys can be registered into the system.
5. After registering and removing the last key;
^ Re-insert the first registered key and
^ turn the key to the "ON" position for 5 seconds.
^ This will take the system out of the key registration mode.
NOTE:
The Security Lamp will not flash during this 5-second period.
6. Turn the key to the "OFF" position.
7. Wait for the Security Lamp to start blinking (approximately 5 seconds).
^ This indicates the completion of Key ID Registration and "C/U Initialization."
^ Proceed to Key Confirmation (Step 6).
NOTE:
On the CONSULT-II screen: If "INITIALIZATION STOPPED" or "INITIALIZATION FAIL" is displayed during the above procedure:
A. Repeat 2nd step: "Get the "BCM-specific' 5-Digit Number Code"
B. Repeat 3rd step: "Decode the Number"
^ This is to confirm that you wrote down the correct BCM-specific 5-digit number code and "generated"/wrote down the correct 4-digit PIN Code Number.
C. Turn the ignition switch "OFF", then "ON".
D. Check "SELF-DIAG RESULTS". Refer to the "BL" section in the Electronic Service Manual (ESM) for any stored codes.
E. Once "NO SELF DIAGNOSIS FAILURE INDICATED" is displayed:
^ Repeat 4th step; "C/U Initialization" and 5th step; "Key Registration" again. Then, proceed to 6th step; "Key Confirmation" (below).
6th step; Key "Confirmation" (check)
1. Confirm that the Security Indicator Lamp on the dash is blinking.
^ This verifies the completion of the Key ID Registration procedure.
2. Confirm all keys operate (start the engine) as follows:
a. Start the engine.
b. Turn the ignition OFF and remove the key.
c. Watch and wait for the Security Indicator Lamp to begin blinking (approximately 5 seconds).
^ This indicates the system has reset.
^ You must wait for the system to reset between key checks or key operation will not be confirmed.
d. Start the engine using the next key.
e. Repeat steps a - d for all keys that were registered.
3. Press [BACK] on the CONSULT-II screen.
4. Press [BACK] on the CONSULT-II screen again.
5. Put any registered key into the ignition and turn it to the "ON" position.
6. Select [SELF-DIAGNOSIS RESULTS] to check for DTC's.
^ In rare cases "CHAIN OF ECM-IMMU" or other DTC's may be stored during the Key Registration process.
^ If DTC's are stored, press [ERASE] to clear them.
7. Turn the ignition to "LOCK" and remove the key.
8. Turn CONSULT-II OFF and disconnect it from the vehicle.
Disclaimer