Antitheft System - NATS Security VBC Logic

2010 Nissan-Datsun Altima L4-2.5L (QR25DE) Technical Service Bulletin # 10-106 Date: 100910

Antitheft System - NATS Security VBC Logic

Classification: EL10-028

Reference: NTB10-106

Date: September 10, 2010

NATS SECURITY - VBC LOGIC

APPLIED VEHICLE: 2009 - 2011 All Nissan with NATS / Immobilizer System

SERVICE INFORMATION

All model year 2009 - 2011 Nissan vehicles equipped with NATS/Immobilizer system have the new VBC (Validate Before Crank) starter relay

logic.

VBC (Validate Before Crank) Logic:

^ The BCM will make sure that a valid (registered) key is being used before engaging the starter relay. If the key is not authenticated the starter will

not operate.

^ If the engine cranks, the issue is not related to NATS. Do not replace NATS components (BCM, I-Key, FOB Reader or RF Receiver). Refer to

ASIST for further diagnostic information as needed.