Starting System: Description and Operation

Starter System







The function of the starting system is to crank the engine at a sufficient speed to allow it to start. Heavy gauge cables, connectors, and switches are used in the starting system because of the large amount of electrical current required by the starter motor while cranking the engine. The amount of resistance in the starting circuit must be kept to a minimum to provide the maximum current for the starter operation. A discharged or damaged battery, loose or corroded connections, or partially broken cables will result in slower than normal cranking speeds, and may also prevent the starter motor from cranking the engine.

If the starter motor or starting circuit is suspected to be the cause of a no-start condition, use the Symptom Chart and diagnostic tests in this section to isolate the condition. Symptom Related Diagnostic Procedures

The starting system includes the following:
^ Starter motor
^ Starter solenoid
^ Battery
^ Ignition switch
^ Transmission range switch
^ Heavy circuit wiring