Steering Lock Relay
WARNING: This page is about a different car, the 2011 Infiniti QX56. However, it is still accessible from the selected car via links, so may be relevant.
Steering lock relay is integrated in IPDM E/R, and supplies power source to steering lock unit. When IPDM E/R receives the steering lock relay ON request signal from BCM, IPDM E/R turns ON steering lock relay and then transmits the steering lock relay condition signal to BCM.