Should some fault arise in the starter circuit do not hasten to think that the trouble is due to the starter. The first to do is to clean up battery cable clamps and ensure they are tight, scrutinize the status of battery cables and replace the broken ones, and check the health of the battery and replace a failed battery. Also inspect the connections and starter motor wiring, check starter motor mounting bolts are tight and see concerning the fuses in the fuse box, identify cause of any blown fuses. Check the ignition switch circuit by connecting it to another circuit and checking the starter relay. When the start button fails to fire when the ignition switch is placed to the start position, test battery voltage to the starter solenoid with a test light or voltmeter. In the absence of voltage, inspect the starter system of wiring, fuses, switches and starter relay. In case, voltage appears but the starter motor does not move, then take off the starter and test it on the bench. A slow starter turnover may be caused by the starter voltage and current consumption at the battery, which should not be less than 8.5 volts or more than 300 amperes, respectively. The factors that influence starter cranking potential conditions include the condition of the battery, cold-cranking rating and the cleanliness of battery terminals and cables. When it is very cold warm the battery or engine block then test. In case when the starter fails to activate when given voltage, take the starter motor assembly out on the bench and inspect the starter motor or solenoid, it could be faulty. Prior to this, make an effort to turn the crankshaft pulley. A starter assembly is fitted into a vise and jumper cables are attached to a test battery and the solenoid S terminal is applied voltage applied to the plunge of the solenoid, which is observed, the shift lever, and the overrunning clutch. When the pinion drive is not rotating yet extending, then the solenoid is operational but the starter motor is faulty. In case of no movement with the solenoid clicking, then the solenoid or the starter motor is faulty. In case the solenoid plunger reaches out and moves the pinion drive, the starter is functioning correctly.