Engine Will Not Start - Electronic Key Registration Procedure System Description For IVIS/NATS (ITB02-068A)

Electronic Key Registration Required

• NATS will not allow the engine to start without the use of a registered electronic ignition key. Previous and current Infiniti models with NATS have a "transponder chip" in the ignition key head.
• If a vehicle will not start and the Dash Security lamp is on solid, it is possible that the electronic ignition keys were not properly registered into the vehicle's Engine Control Module (ECM).
• When the NATS electronic ignition key or ECM are replaced, C/U Initialization and Key Registration MUST BE PERFORMED or THE VEHICLE WILL NOT START. This same procedure is also needed when registering new keys.
• If any electronic ignition keys need to be added or if any electronic ignition key needs to be re-registered, ALL other electronic ignition keys must be re-registered at the same time or they will no longer start the vehicle.

Other Important Information

• The NATS key code is permanently encoded to the NATS key ID chip at the time of its manufacture and cannot be changed. It is recommended to use Infiniti service parts (key blanks).
• NATS does not activate the vehicle theft warning system.
• Each vehicle is supplied with three registered electronic keys.
• A maximum of four electronic 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 Fig 1 ).
    Fig 1: Mobil Speedpass

    
  • 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.

1st Step - Prepare

1. Collect all existing electronic 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 electronic ignition keys and other transponders away from each other (take them off the key ring). Keep them separate during the whole key registration process.

2nd Step - Get The "IMMU-specific" 5-Digit Number Code

1. Locate the IMMU. The IMMU is located behind the driver's side lower knee panel (see Fig 3 ).
   Fig 3: IMMU Location

   
2. Write down the IMMU-specific 5-digit number code (see Figure 2). The letter "O" is not used in the 5-digit number code. Anything that looks like an "O" is really the number zero "0".
3. Go to an ASIST terminal.

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 "NATS Decoder" button (see Fig 4 ).
   Fig 4: Clicking On "NATS Decoder" Button

   
3. Follow the steps in Fig 5 , below (write down the NEW code from ASIST).

Fig 5: Generating Pin Code Number

Fig 6: Example of IMMU Label

4th Step - C/U Initialization Procedure

1. Insert the NATS (Purple) Software Card into Slot A of the CONSULT-II unit.
2. Connect CONSULT-II and CONSULT-II converter to the data link connector under the dash.
3. Insert the ignition key into the ignition and turn it to the "ON" position.
   • Do not start the engine.
   • CONSULT-II will load the NATS software automatically. Wait for the START box to appear on CONSULT-II before proceeding.
4. Touch START on the CONSULT-II screen.
5. Touch NATS V 5.0.
6. Touch C/U INITIALIZATION to perform C/U INITIALIZATION mode.
7. On the CONSULT-II "IMMU INITIALIZATION" touch screen; type in the 4-digit PIN Code Number.
   • You wrote it down from ASIST's IVIS/NVIS (NATS) screen (step  3 ).
8. Touch START on CONSULT-II to perform C/U INITIALIZATION.
9. When C/U INITIALIZATION is complete;
   1. "INITIALIZATION COMPLETED" will be "displayed" on the IMMU INITIALIZATION screen.
   2. Turn key to the "OFF/LOCK" position and pull it out.
   3. WAIT AT LEAST 5 SECONDS.
   4. Go to 5th step; Electronic Key Registration.

5th Step; Electronic Key Registration

1. Insert an electronic key into the ignition.
   • DO NOT turn the key to the "ON" position or start the engine.
2. Wait at least 5 seconds (the Security Lamp will flash 5 times, then it will stop).
3. Remove the key from the ignition:
   • The key is now registered.
   • Keep it separate from the other keys.
   IMPORTANT: Keep the first REGISTERED electronic key separate from ALL the other electronic keys for right now. DO NOT MIX UP KEYS! (See NOTE, below.)
   NOTE:

   • The first registered key will be used later in step 4 (below). Keep it separate from all other keys.
   • During this process do not mix up the "registered" electronic keys and the "unregistered" electronic keys.
   • Keep them in different "piles" during this process.
   • Accidentally inserting an already "registered" electronic key at this point will drop the system out of the registration mode.
   • If that happens you will have to start all over again. Go back to #3 of "4th step (C/U Initialization); and re-start from there.
4. Repeat steps 1-3 (above) for all remaining "unregistered" keys. Remember; a maximum of four electronic keys can be registered into the system.
5. After registering and removing the last electronic key;
   1. Re-insert the first registered electronic key. Do NOT turn the key.
   2. Wait at least 5 seconds.
      • This will take the system out of the key registration mode.
      • The Security Lamp will not flash during this 5-second period.
6. Remove the electronic key.
7. Wait for the Security Lamp to start blinking (approximately 5 seconds).
   • This indicates the completion of the Key ID Registration and "C/U Initialization."
8. Proceed to Key Confirmation (Step 6 below).

6th Step - Key Confirmation

1. Confirm that the Security Indicator Lamp on the dash is blinking.
   • This verifies the completion of the Key ID Registration sequence.
2. Confirm that ALL the electronic keys will successfully start the engine.
   • Watch for the Security Indicator Lamp to begin blinking (approximately 5 seconds) between each key check, indicating the system has reset.
   • Wait for the system to reset in between each key check. You must wait for the system to reset between key checks or key operation will not be confirmed.
3. Press BACK on the CONSULT-II screen.
4. Press BACK on the CONSULT-II screen again.
5. Put any registered electronic 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 key to "OFF/LOCK" and remove it.
8. Turn CONSULT-II "OFF" and disconnect it from the vehicle.