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2019 Nissan-Datsun Altima Diagnostic and Repair Information # 10-106 Date: 100910

2019 Nissan-Datsun Altima Diagnostic and Repair Information # 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.

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