Toyota 28100-50090 Starter Assembly

Even if there is a problem in the starting circuit, do not conclude that it relates to the starter right away. First, clean and tighten the battery cable clamps, replace the battery cables if they are worn out and or damaged, and finally check the battery for damage and failure in carrying out all the tests and replace it if necessary. Also, inspect the starter solenoid wires and link, tightened starter bolts, ignition switch circuit functionality, and Park/Neutral Position switch or clutch start switch, with the shift lever in PARK or NEUTRAL or the clutch pedal depressed. Also, inspect the starter relay that is usually fitted in the fuse/relay box in the inside of the bonnet. If the starter motor does not spring to action the moment the ignition switch is turned to start, then one can test the battery voltage to the solenoid with an intention of checking if it is receiving the correct voltage signal or not. People should join a tester or voltmeter on the starter solenoid positive terminal; with the help of an assistant turn the ignition switch to the start position; if there is no voltage, look for all the fuses and relays in the starting circuit. If voltage is confirmed but the starter motor does not turn on, then you have to remove the starter and test it on the bench. If the starter turns over slowly then check the cranking voltage that is the voltage available to turn the starter and the current draw from the battery and find out that the battery voltage drops below the specified levels and the current draw is not within the right range. If, of course, the starter is getting the voltage but does not trigger, then remove the starter/solenoid assembly and check its solenoid on the bench. In rare cases make sure that the engine is not seized by trying to turn the crankshaft pulley. You need to connect the clamp of the jumper cables to the battery terminals and touch the S terminal of the starter/solenoid assembly with the cable to apply the battery voltage on the solenoid and to check the working condition of the internal starter/solenoid assembly. If the pinion drive comes out but does not rotate then the starter motor is as problem; if there is no movement but the solenoid sounds then the solenoid or motor is as issue. If this is the case and the plunger has extended and rotates the pinion drive, the problem is not with the starter/solenoid assembly.