If the solenoid is clicking, the circuit that triggers it is working. The key switch and the safety switches in the starter circuit combine to energize the solenoid. The solenoid connects the battery to the starter motor when the solenoid is energized. The clicking noise comes from a part called the starter solenoid. If the drive gear reverses, it indicates that the solenoid holding coil is damaged.What does it mean when a solenoid clicks on a lawn mower? If the drive gear in the previous test can move forward, then disconnect the Terminal C and connect it to the wire of the battery terminal negative, as shown in Figure, the drive gear should remain outside. Starter Solenoid Holding Coil Test Instruction 2. If not, the solenoid sucking coil is very likely damaged. below), connect the positive pole of the car battery to Terminal 50, and negative pole to the starter Terminal C and the shell.Īt this point, the drive gear should move forward. Starter Solenoid Sucking Coil Test Instruction 1.Starter Solenoid Sucking Coil Testĭisengage the outer lead of the starter field winding (Terminal C, see Fig. If there is continuity(The screen displays a value of zero (or near zero), and the multimeter beeps. Set the continuity mode, check the continuity between Terminal M and B. If there is no continuity(The screen will display 1 or OL (open loop).), replace the solenoid. Set the continuity mode, check the continuity between Terminal S and the machine body. The continuity between S & solenoid frame If there is a continuity,(The screen displays a value of zero (or near zero), and the multimeter beeps. Set the continuity mode, check the continuity between Terminal S and M. If your multimeter has the continuity mode, it will be even easier to figure out your starter solenoid condition by testing the continuity of each connection. If there is a short circuit or broken circuit, you should replace the starter solenoid. If the resistance is infinite, then the circuit could be broken.
If the resistance is zero, then the circuit might be shorted. If there is a resistance, then the holding coil is good. Set the multimeter dial to continuity mode, connect the multimeter probes to the solenoid terminal post( the one used to connect to the motor body) and the solenoid shell.
Test a starter solenoid with a multimeter The starter solenoid has contact burnt, or the movable iron core and return spring cannot move due to no enough elastic force(poor quality) The start button is disengaged, the starter continues to rotate, but the drive gear can not reverse. The start button has disengaged, and the drive gear has returned, but the starter continues to rotate. The starter solenoid holding coil keep holding or the contacts sealing-offĪfter switching on the starter, the starter solenoid makes the clicking noise, slightly moves but does not rotate.Ī.The connection between the solenoid and starter is defective The starter solenoid make the clicking noise continuously Release the start button, the starter remains in operation and only stops when power off.ģ) The elastic force of the return spring weakens after repeated use, resulting in that the drive gear of one-way clutch cannot be restored timely, but driven and reversely dragged by the flywheel ring gear.Ĥ) When the starter starts, it will make a periodic noise from the starter solenoid, but the starter does not rotate.Ī multimeter is needed to test and verify the problems of the starter solenoid, but before the testing, the following table can be used to determine whether the starter solenoid works: The starter solenoid has four common problems:ġ) The suction fails occasionally, or works in engine cooling only and fails in engine warming up.Ģ) When starting up, the starter solenoid can not reset. Starter Solenoid: The Definitive Guide Starter Solenoid Problems
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