DTC B210B: Starter Control Relay: Description
WARNING: This page is about a different car, the 2017 Nissan 370Z and 2016 Nissan 370Z. However, it is still accessible from the selected car via links, so may be relevant.
Starter control relay, integrated in IPDM E/R, permits the starter relay operation when in the N or P position and the steering is locked or unlocked (models with steering lock unit). It is installed parallel to the starter relay.