System Description

SYSTEM DIAGRAM

GNSDB131992

Courtesy of NISSAN NORTH AMERICA, INC.

Component		Function
Starter motor		Refer to or Removal and Installation .
IPDM E/R		CPU inside IPDM E/R controls starter relay. Refer to Component Location .
BCM		BCM controls starter cut relay. Refer to Component Location .
Starter cut relay		Power is supplied to the starter cut relay with BCM control.

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.