The main malfunctions of the starter

CAUSE	ELIMINATION METHOD
Starter not working
Low battery	Charge your battery
When terminals 30 and 50 are connected, the starter starts to work	Repair the starter power circuit
Open or short to ground in the starter wire	Check the condition of the wires and, if necessary, replace them
Reducing current due to poor fastening or oxidation of wire contacts	Clean the contacts and secure the wires securely
No voltage at terminal 50 of the traction relay	Break in the electric power circuit of the starter, which must be restored
The starter rotates slowly and does not turn the engine crankshaft
Low battery	Charge your battery
Reducing current due to poor fastening or oxidation of wire contacts	Clean the contacts and secure the wires securely
The carbon brushes are not tight enough to the commutator or are defective	Check the condition and, if necessary, replace the carbon brushes
The carbon brushes do not come into contact with the commutator	Replace carbon brushes
The working surface of the collector is damaged	Sand the working surface of the collector or replace the anchor
The voltage supplied to the starter is less than 10 V	Check starter relay or traction relay
Faulty traction relay	Replace traction relay
The starter operates normally, but does not turn the engine crankshaft
Dirty or defective starter drive gear	Clean or replace starter drive gear
Worn flywheel ring gear	Replace flywheel
The starter gear does not disengage from the flywheel ring gear
Dirty or damaged starter drive gear or screw threads on the starter shaft	Clean or replace drive gear or starter armature
Faulty traction relay	Replace traction relay
Decreased elasticity or broken return spring	Replace return spring
The starter continues to work after turning it off with the ignition key
Burning of the contacts of the traction relay	Switch off the ignition immediately or remove the ground wire from the battery
Ignition switch does not disable starter	Immediately remove the ground wire from the battery and replace the ignition switch

Order of execution

1. If, when the starter is turned on, the click of the traction relay is not heard and the starter motor does not work, check if voltage is applied to terminal 50.

2. When starting the engine, the voltage at terminal 50 must be at least 10 V. If the voltage is less than 10 V, check the starter power supply circuit.

3. Follow these steps to check the condition of the starter circuit.

4. Apply the handbrake and place the shift lever in neutral. Turn on the ignition.

5. Using an additional 4 mm wire², connect terminals 30 and 50.

6. If the starter motor spins, the starter power supply circuit is faulty.