Maintaining and troubleshooting your starter motor is not as complicated as it may seem. Here are some tips that can help you identify problems with your starter motor:
Link check:
Use a screwdriver or other conductors to short-circuit the B terminal and S terminal of the starter：The switch has action, but the armature has no action (armature or brush failure)；The switch has no action, but the armature has action (electromagnetic switch failure)；Use a screwdriver or other conductors to short-circuit the B terminal and S terminal of the starter. If the engine can be started, there is no problem with the starter. Please check the ignition key, starter relay or wiring.
Visual inspection:
Remove the starter and check the appearance：Check the appearance damage, the protruding condition of the starter gear, the ablation marks of the water outlet hole of the starter, and whether the solder joints of the starter switch are melted.
Check with battery:
After removing the starter, use the battery to check:
A. The negative pole of the battery is grounded to the starter, and the positive pole is connected to the S terminal of the starter. Check the condition of the electromagnetic switch:
At this time, there should be a sound of the switch pulling in and the starter gear protruding, otherwise, the inside of the electromagnetic switch will burn out.
B. The negative pole of the battery is grounded to the starter, and the positive pole is connected to the M terminal of the starter to check the operation of the motor:
At this time, the starter gear should not stretch out and the motor is running.
C. The negative pole of the battery is grounded to the starter, and the positive pole is connected to the B terminal of the starter:
At this time, the starter cannot run. If the starter can run, the internal dynamic and static contacts of the electromagnetic switch will be sintered.
D. Ground the negative pole of the battery to the starter, and connect the positive pole to the S terminal and B terminal of the starter to check the operation of the entire motor.
Starter Motor Check: If everything else is in order, you may need to test the starter motor itself. Use a starter motor tester or multimeter to check the windings and brushes for continuity and resistance. If it’s not functioning correctly, repair or replace it as necessary.