Any form of testing calls for the air temperature to be exactly between 59-100°F in preparation for the test. The starting system includes an ignition switch, starter relay, neutral safety switch, wiring harness, battery, and a starter motor with an integral solenoid, forming two separate circuits: a large current circuit which supplies the starter motor with current up to 300 or more amps a small current circuit which controls the operation of the motor and that operates at a current of less than 20 amps. Thus, before starting diagnostics of the starting system it is necessary to check: battery post and terminals are clean, alternator drive belt tension and condition is correct, battery state-of-charge is accurate, battery cable connections at the starter and engine block are clean and free from corrosion, wiring harness connectors and terminals are clean and free from corrosion, and checking circuit grounding.