Checking the starter operation
To test the starter installed on the vehicle, the battery must be fully charged.
Check if the battery ground cable clamp is corroded.
Check that the starter is connected correctly.
Check the voltage drop at the starter terminal "50" during engine start. A voltage drop of 0.5 V is acceptable. If the voltage drop is greater, check the ignition switch wire terminals, the starter solenoid relay, and the plug connections in the engine start circuit.
Connect the voltmeter to the battery.
Connect the ammeter in series to the battery-starter circuit using alligator clips.
Shift into fifth gear and apply the handbrake.
Start the starter and read the readings from both instruments.
The check time should not exceed 5 seconds.
The following values are considered acceptable:
- voltage 8 V.
- current strength 410 A.
If the voltage is too low, it is necessary to find out the reasons for the voltage drop. High current consumption indicates a short circuit in the starter.
If the current consumption is too low, the reason for this may be:
- dirty starter manifold,
- worn starter brushes,
- poor conductivity of the pull-in relay contacts,
- break in the engine starting circuit.
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