Component part | Description
TCM | TCM supplies power to the starter relay and starter control relay inside IPDM E/R when the shift lever is shifted to the P or N position.
BCM | BCM controls the starter relay inside IPDM E/R.
IPDM E/R | CPU inside IPDM E/R controls the starter control relay.
Starter motor | The starter motor plunger closes and the motor is supplied with battery power, which in turn cranks the engine, when the “S” terminal is supplied with electric power.