NATS (Nissan Anti-Theft System) / Gasoline engine — Circuit Diagram — NATS (Supplement-VI)
EL-6045wiring diagramSame NATS architecture as Supplement-II — gasoline-engine-specific page (diesel has slight differences, on next page).
Circuit Diagram — NATS
Wiring Schematic
Components (10)
Connections (10)
IGN
IGNF1Ignition feed
F1
F1IMMUTo IMMU pin 7 — ignition-on feed
BAT
BATF2Battery feed
BATF3Battery feed
F2
F2IMMUTo IMMU pin 8 — battery feed
F3
F3INDSecurity-indicator feed
IND
INDIMMUTo IMMU pin 6
IMMU
IMMUECMIMMU pin 1 → ECM pin 26 — authorisation signal
IMMUAUDIOIMMU pin 2 → audio system
IMMUGNDIMMU pin 4 — ground
NOTE
NATS = Nissan Anti-Theft System. The IMMU (Immobiliser Unit) reads a code from the ignition key transponder and authorises the ECCS Control Module to allow injection. Without a valid key, the engine cranks but won't fire. Also protects the audio system on coded radios. This circuit was also covered in Supplement-II (EL-7060+) — Supplement-VI consolidates it here.
WARNING
If NATS detects an invalid/missing key, the security indicator stays solid; pull the connector and the engine will not start until the IMMU is re-programmed with CONSULT-II.