2. Make sure that the battery is charged and the terminals on its terminals and starter contacts are tightly tightened.
3. If the starter rotates, but the crankshaft does not turn, this means that the starter freewheel is slipping; Remove the starter from the engine and replace with a new one.
4. If the starter does not rotate when turned on, but a relay click is heard, the cause of the malfunction may be the battery, relay contacts, or the starter itself.
Note. Before checking the starter motor, make sure the battery is fully charged.
5. If you don’t hear a click from the relay operation when you turn it on, then the relay is faulty or there is an open circuit in the electrical circuit of the relay.
6. To check the health of the relay, install a jumper between the positive terminal of the battery and the terminal "S" on the relay housing (see illustration). If at the same time the starter starts to work, then the relay is working properly and the cause should be sought in the ignition switch, in the neutral position sensor or electrical wiring.
15.6. Starter terminal S location
7. If the starter still does not work, replace it or disassemble, check and repair.
8. If the starter turns the crankshaft at a very low speed, first of all check the charge level of the battery and the tightness of all terminals. The cause of the malfunction may also be the condition of the engine or inappropriate viscosity of the engine oil.
9. After the engine has warmed up to normal operating temperature, disconnect the high-voltage output of the ignition coil from the distributor cap and short it to "mass".
10. Connect the positive lead of the voltmeter to the starter terminal and the negative lead to "mass".
11. While turning the crankshaft of the engine with the starter, follow the readings of the voltmeter and, after waiting until they stop changing, read the steady-state voltage value. Operate the starter for no more than 30 seconds. When the starter rotates at normal speed, the voltage should be at least 9 V. If the voltmeter shows 9 V or more, but the crankshaft turns more slowly than usual, this means that the starter is faulty. If the voltage is below 9 V at a slow crankshaft speed, the cause of the malfunction is most likely burnt relay contacts.