System Description: Outline
WARNING: This page is about a different car, the 2011 Nissan Quest. However, it is still accessible from the selected car via links, so may be relevant.
- TCM transmits shift position signal to BCM and IPDM E/R, when selector lever is in the P or N position.
- IPDM E/R supplies power supply to starter relay and starter control relay, when shift position signal is received.
- When starter operating condition is satisfied, IPDM E/R turns starter control relay ON by starter control relay control signal.
- When engine cranking condition is satisfied, BCM turns starter relay ON by starter control relay control signal.
- Then battery power is supplied to starter motor ("S" terminal) through starter control relay and starter relay.