Starting System: Description and Operation

System Description

Power is supplied at all times:
- through 30 A fusible link (letter k, located in the fuse and fusible link box)
- to ignition switch terminal 1.

With the ignition switch in the START position, power is supplied:
- from ignition switch terminal 5
- to park/neutral position (PNP) relay terminal 7.

With the ignition switch in the ON or START position, power is supplied:
- through 10 A fuse (No.30, located in the fuse block)
- to park/neutral position (PNP) switch terminal 2.

FOR MODELS WITH VEHICLE SECURITY SYSTEM
With the selector lever in the P or N position, power is supplied:
- from park/neutral position (PNP) switch terminal 1
- to vehicle security relay terminal 4
- through vehicle security relay terminal 3
- to park/neutral position (PNP) relay terminal 1.

If the vehicle security system is triggered, ground is supplied to vehicle security relay terminal 1. This removes power to park/neutral position (PNP) relay terminal 1, which disengages the park/neutral position (PNP) relay and the starter motor will not operate.

FOR MODELS WITHOUT VEHICLE SECURITY SYSTEM
With the selector lever in the P or N position, power is supplied:
- from park/neutral position (PNP) switch terminal 1
- to park/neutral position (PNP) relay terminal 1.

Ground is supplied to park/neutral position (PNP) relay terminal 2, through body grounds E3, E30 and E50. With power and ground supplied, the park/neutral position (PNP) relay is energized and power is supplied:
- from park/neutral position (PNP) relay terminal 6
- to starter motor windings terminal S.

The starter motor plunger closes and provides a closed circuit between the battery and starter motor. The starter motor is grounded through the engine block. With power and ground supplied, cranking occurs and the engine starts.