Starting System Operation

Voltage is applied at all times to the ignition switch from the IGN A fuse 6 through the RED (242) wire. When the ignition switch is turned to the START position, voltage is applied to the CRANK fuse 8 through the YEL (5) wire. From the CRANK fuse 8, voltage is either applied to the clutch pedal position switch (M/T) or the transmission range switch (A/T) through the PPL (806) wire. When either the clutch is disengaged (M/T) or the transmission is in park or neutral (A/T), voltage is applied to the coil of the starter relay through the PPL (1035) wire. Since the starter relay is permanently grounded at ground G105 through the BLK (150) wire, the starter relay energizes.

Voltage is applied at all times to the starter relay contacts from IGN A fuse 6 through the RED (242) wire. When the starter relay energizes, the starter relay contacts close, and voltage is applied to the starter motor solenoid. Since the starter motor solenoid is permanently case grounded, the starter motor solenoid will energize two coils. The pull-in winding coil energizes in order to pull the starter motor solenoid contacts closed. When the contacts close, a plunger on the contacts causes the pull-in winding coil circuit to open. The hold-in winding coil then holds the starter motor solenoid contacts closed. Voltage is then applied to the starter motor from the battery through the BLK (1) wire and the closed contacts of the starter motor solenoid. Since the starter motor is also permanently case grounded, the starter motor will run until the ignition switch is moved out of the START position. When this happens, a spring in the starter motor solenoid moves the starter motor solenoid contacts and the plunger back to the rest position.