System Description
WARNING: This page is about a different car, the 2017 Nissan Sentra. However, it is still accessible from the selected car via links, so may be relevant.
- When the selector lever is in the P or N position, power is supplied to starter relay and starter control relay by the transmission range switch. The BCM and IPDM E/R (CPU) will detect the selector lever position by the input signal.
- When the starter operating condition is meet, the IPDM E/R will turn the starter control relay ON by starter control relay control signal.
- When engine cranking condition is meet, the BCM turns ON the starter relay by starter control relay signal.
- Then battery power is supplied to starter motor ("S" terminal) through the starter control relay and starter relay.