Starting System: Operation

Starter solenoid windings are energized when ignition switch is turned to START position and CPP switch (manual transmission) or PNP switch (automatic transmission) is closed. Resulting plunger and shift lever movement causes drive pinion to engage engine flywheel ring gear and starter solenoid contacts to close. With contacts closed, starter solenoid provides closed circuit between positive battery terminal and starter motor. Circuit is complete and cranking occurs as soon as starter solenoid contacts are closed. Starter motor is permanently grounded to engine block. When engine starts, clutch and drive assembly is designed to overrun and protect armature from excessive speed until ignition switch is released from START position. After ignition switch is released from start position, return spring in solenoid assembly forces starter solenoid contacts open, breaking circuit between battery and starter motor, and disengaging clutch and drive assembly. Ignition switch should be released immediately upon engine start-up to prevent prolonged overrun.