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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: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.

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1. Get a full understanding of the trouble symptoms by check the theft-alarm system,and then carry out troubleshooting. 2. The signals input to the ETACS-ECU from the switches which are related to the following systems should be normal. – Central door locking system – Headlight system – Horn system – Starting system In addition, the signals input to the ETACS-ECU from the following switches should be normal. – Hood switch – Liftgate switch – Liftgate key cylinder switch NOTE: 1. The ETACS-ECU may not accept the alarm cancelling signal under the following conditions. – If the liftgate key cylinder switch or door lock key cylinder switch is operated roughly – If these switches have been installed incorrectly or switches themselves are defective In such case, the alarm will work when the door is opened using a key. [However, when the door key cylinder switch has been shorted with the ignition switch ON, the ETACS-ECU judges the detection switch as faulty. Since then, it will prevent setting of alarm until the shorting is corrected.] 2. If the liftgate is opened using a key and is left opened when the door key cylinder switch system has a trouble (wiring harness damage, open circuit, etc.), the ETACS-ECU judges it as the liftgate holding mode and does not produce alarm even when the door is opened.