P1613 INFINITI, NISSAN: ECM INT CIRC-IMMU
POST UPDATED IN May, 2023
P1613 INFINITI, NISSAN: ECM INT CIRC-IMMU
The immobilizer is an electrical device that is installed in vehicles with the purpose of preventing the operation of the car without using the proper key. With this device, the car does not engage hot once the entry is achieved.
A microcircuit is located inside the key. This induces through an electromagnetic field a current flow in the key body, and this action creates an ID that is unique and is read by the ECM (Engine Control Module). If this controller determines that the coded key is valid and current, it is authorized to start the injection process.
In the immobilizer system, known in Infiniti cars as IVIS (Infiniti Vehicle Immobilizer System) and in Nissan as NATS (Nissan Anti-Theft System), there is the NATS ignition key, a NATS antenna amplifier, the BCM or IMMU, the ECM and an indicator lamp that serves as a security element.
The P1613 OBDII fault code is set when a malfunction is detected by the ECM internal circuit of the IMMU communication line.
The reasons for the DTC P1613 OBD2 are as follows:
Follow the steps outlined below to troubleshoot the P1613 OBDII diagnostic code: