Circuit Operation

CIRCUIT OPERATION
Circuit T40 supplies battery voltage to the engine starter motor solenoid when the coil side of the engine starter motor relay energizes. The relay is located in The Power Distribution Center (PDC).

Circuit A0 from the battery powers the fuses in the PDC. Fuse 16 in the PDC powers circuit A1. Circuit A1 connects to the ignition switch.

The ignition switch supplies battery voltage to the coil side of the starter motor relay on circuit A41 when the key is moved to the START position and the Park/Neutral position switch is CLOSED. Ground for the coil side of the engine starter motor relay is supplied by the case grounded Park/Neutral position switch. Circuit T41 connects the coil side of the relay to the Park/Neutral position switch.

When the engine starter motor relay energizes and its contacts CLOSE, they connect circuit A17 from fuse 4 in the PDC to circuit T40. Circuit T40 supplies battery voltage to the starter motor solenoid. Circuit A0 from the battery supplies voltage to the starter motor when the solenoid energizes.