Starting System: Description and Operation

STARTING SYSTEM

The starting system consists of the following:
- Starter motor
- Ignition switch
- Digital transmission range (TR) sensor
- Mini ISO relay

Starting System - Starter Motor
The starter motor:
- is a permanent-magnet, gear reduction, 12 V DC motor.
- has an integral starter solenoid.

Starting System - Starter Relay
The starter relay:
- is a mini ISO relay.
- switches power to the starter solenoid to engage the starter motor when it receives a START signal from the ignition switch.

Starting System - Normal Operation
When the digital TR sensor recognizes that the vehicle is in either PARK or NEUTRAL and the ignition switch is placed in the START position, it sends a signal to the mini ISO relay that, in turn, sends a voltage signal to the starter solenoid, which will engage the starter motor to crank the engine at a speed fast enough to permit the engine to start.