Description & Operation
Voltage is applied at all times from BATT 2 fuse (30-amp) to ignition switch. When ignition switch is turned to START position, battery voltage is applied through CRANK fuse (10-amp) to Powertrain Control Module (PCM). PCM grounds theft deterrent relay, provided that theft deterrent module sends a valid class 2 start enable password and a start enable signal is seen from internal mode switch. When ignition switch is turned to START position and all theft criteria is met, battery voltage is supplied to switch side of theft deterrent relay and then on to starter solenoid when theft deterrent relay is activated.
When voltage is applied to solenoid windings, this creates movement of solenoid plunger and shift lever, causing drive pinion to engage flywheel and close solenoid switch contacts. See Fig 1 . When solenoid switch contacts close, starter motor energizes and cranks engine. As engine starts, pinion overrun clutch protects armature from excessive speed until ignition switch is opened and plunger return spring disengages pinion.