Starting System: Description and Operation

The [1][2]Power Distribution Center (PDC) supplies battery voltage to the engine starter motor solenoid on circuit T4O when the coil side of the engine starter motor relay energizes.

Circuit A0 from the battery powers the fuses in the PDC. Circuit A0 continues from fuse 3 in the fuse block to the contact side of the starter motor relay Fuse 7 in the fuse block supplies voltage from circuit A0 to 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 starter motor relay energizes and the contacts close, circuit S5 supplies battery voltage to the engine starter motor solenoid. Circuit T40 from the engine starter motor relay connects to circuit S5. Circuit A1 from the battery supplies voltage to the starter motor when the solenoid energizes.