Starting System: Description and Operation

System Description

M/T MODEL
Power is supplied at all times:
- through 40 A fusible link (letter m located in the fuse and fusible link box)
- to ignition switch terminal B.

With the ignition switch in the START position, power is supplied:
- from ignition switch terminal St
- to intelligent power distribution module engine room (IPDM E/R) terminal 11.

With the ignition switch in the ON or START position, power is supplied:
- through 10 A fuse [No. 12, located in the fuse block (J/B)]
- to intelligent power distribution module engine room (IPDM E/R) terminal 43.

When the clutch pedal is depressed, ground is supplied to intelligent power distribution module engine room (IPDM E/R) terminal 46 through the clutch interlock switch and body grounds E15 and E24.

Provided that the intelligent power distribution module (IPDM E/R) receives a starter relay on signal from the BCM over the CAN lines, the IPDM E/R is energized and power is supplied:
- from terminal 4 of the clutch interlock relay
- to terminal S of the starter motor windings.

The starter motor plunger closes and provides a closed circuit between the battery and the starter motor. The starter motor is grounded to the cylinder block. With power and ground supplied, the starter motor operates. In the event that the CAN communication line fails, the IPDM E/R will continue to receive a starter relay on signal from the BCM as long as the ignition switch remains in the START or ON positions.

A/T MODEL
Power is supplied at all times:
- through 40 A fusible link (letter m located in the fuse and fusible link box)
- to ignition switch terminal B.

With the ignition switch in the START position, power is supplied:
- from ignition switch terminal St
- to intelligent power distribution module engine room (IPDM E/R) terminal 11.

With the ignition switch in the ON or START position, power is supplied:
- through 10 A fuse [No. 12, located in the fuse block (J/B)]
- to intelligent power distribution module engine room (IPDM E/R) terminal 43.

Ground is supplied, with the selector lever in the P or N position:
- to intelligent power distribution module engine room (IPDM E/R terminal 46
- through park/neutral position switch.
- from ignition switch terminal St
- through intelligent power distribution module engine room (IPDM E/R) terminal 71
- to terminal S of the starter motor windings.

The starter motor plunger closes and provides a closed circuit between the battery and the starter motor. The starter motor is grounded to the cylinder block. With power and ground supplied, the starter motor operates.

In the event that the CAN communication line fails, the IPDM E/R will continue to receive a starter relay on signal from the BCM as long as the ignition switch remains in the START or ON positions.

CAN Communication System Description
CAN (Controller Area Network) is a serial communication line for real time application. It is an on-vehicle multiplex communication line with high data communication speed and excellent error detection ability. Many electronic control units are equipped onto a vehicle, and each control unit shares information and links with other control units during operation (not independent). In CAN communication, control units are connected with 2 communication lines (CAN H line, CAN L line) allowing a high rate of information transmission with less wiring. Each control unit transmits/receives data but selectively reads required data only.