Starting System: Description and Operation

STARTING SYSTEM

System Description

A/T MODELS
Power is supplied at all times:
- to starter motor terminal 2, and
- through 40 A fusible link (No. j, 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 IPDM E/R terminal 21.

With the ignition switch in the ON or START position, power is supplied to IPDM E/R (intelligent power distribution module engine room) CPU.

With the selector lever in the P or N position, power is supplied:
- through A/T assembly terminal 9
- to IPDM E/R terminal 48.

Ground is supplied at all times:
- to IPDM E/R terminals 38 and 59
- through body grounds E9, E15 (all) and E24 (VQ40DE model).

Provided that the IPDM E/R receives a starter relay request ON signal from the BCM over the CAN lines, the IPDM E/R grounds the starter relay and power is supplied:
- from terminal 19 of the IPDM E/R
- to terminal 1 of the starter motor.

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.

M/T MODELS (USING IGNITION SWITCH)
Power is supplied at all times:
- to starter motor terminal 2, and
- through 40 A fusible link (No. j, 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 IPDM E/R terminal 21.

With the ignition switch in the ON or START position, power is supplied:
- to IPDM E/R (intelligent power distribution module engine room) CPU, and
- through 10 A fuse (number 49, located in the IPDM E/R)
- to terminal 1 of the clutch interlock switch.

With the clutch pedal depressed, power is supplied:
- from clutch interlock switch terminal 2
- through diode - 3 (with clutch interlock cancel switch)
- to IPDM E/R terminal 48.

Ground is supplied at all times:
- to IPDM E/R terminals 38 and 59
- through body grounds E9, E15 (all) and E24 (VQ40DE model).

Provided that the IPDM E/R receives a starter relay request ON signal from the BCM over the CAN lines, the IPDM E/R grounds the starter relay and power is supplied:

- from terminal 19 of the IPDM E/R
- to terminal 1 of the starter motor.

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.

M/T MODELS (USING CLUTCH INTERLOCK CANCEL SWITCH)

NOTE: Vehicles with a manual transmission may be equipped with a clutch interlock cancel switch. This system description describes vehicle starting using the clutch interlock cancel switch. The use of the clutch interlock cancel switch allows the driver to start the vehicle without depressing the clutch pedal.

Power is supplied at all times:
- to starter motor terminal 2, and
- through 40 A fusible link (No. j, 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 IPDM E/R terminal 21.

With the ignition switch in the ON or START position, power is supplied:
- to IPDM E/R (intelligent power distribution module engine room) CPU, and
- through 10 A fuse (number 49, located in the IPDM E/R)
- to terminal 1 of the clutch interlock cancel switch, and
- to terminal 3 of the clutch interlock cancel relay 2.

With the clutch interlock cancel switch depressed, power is supplied:
- from clutch interlock cancel switch terminal 3
- through normally closed contacts (terminals 3 and 4) of clutch interlock cancel relay 1
- to terminal 2 of the clutch interlock cancel relay 2

Ground is supplied at all times:
- to IPDM E/R terminals 38 and 59, and
- to terminal 1 of clutch interlock cancel relay 2
- through body grounds E9, E15 (all) and E24 (VQ40DE model).

The clutch interlock cancel relay 2 is energized and power is supplied:
- from terminal 5 of the clutch interlock cancel relay 2
- to IPDM E/R terminal 48.

Provided that the IPDM E/R receives a starter relay request ON signal from the BCM over the CAN lines, the IPDM E/R grounds the starter relay and power is supplied:
- from terminal 19 of the IPDM E/R
- to terminal 1 of the starter motor.

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.