System Description

SYSTEM DIAGRAM 

Courtesy of NISSAN

System Description 

• "B" terminal is constantly supplied with 12 V battery power.
• When starter operating condition is satisfied, IPDM E/R turns starter relay ON by starter relay control signal.
• When engine cranking condition is satisfied, BCM turns starter cut relay ON by starter cut relay control signal.
• Then 12 V battery power is supplied to starter motor ("S" terminal) through starter cut relay and starter relay.