Starting System: Description and Operation

STARTING SYSTEM

System Description
Power is supplied at all times:
- through 40 A fusible link (letter F, located in the fuse and fusible link box)
- to ignition switch terminal 1
- through 15 A fuse (No. 78, located in the IPDM E/R)
- to CPU of IPDM E/R
- through 10 A fuse (No. 71, located in the IPDM E/R)
- to CPU of IPDM E/R.

When the selector lever in the P or N position, power is supplied:
- from TCM, and through A/T assembly terminal 9
- to IPDM E/R terminal 53.

Ground is supplied:
- to IPDM E/R terminals 38, 50 and 60
- from body grounds E21, E50 and E51.

With the ignition switch in the START position, and provided that the IPDM E/R receives a starter relay ON signal from the CAN lines, the IPDM E/R is energized and power is supplied:
- from ignition switch terminal 5
- to IPDM E/R terminal 4 and
- through IPDM E/R terminal 3
- to starter motor terminal 1.

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