Use a charged battery for testing.
Set the ammeter to its highest measurement range.
With the ignition off, disconnect the ground (-) cable from the battery.
Caution: Follow the instructions in the chapter "Removing and installing the battery".
Connect the ammeter between the negative pole of the battery (-) and the ground wire (-). In this case, the positive pole of the ammeter (+) must be connected to the ground wire (-), and the negative pole (-) to the negative pole (-) of the battery.
Note: The test can also be performed using a test lamp. If the lamp connected between the ground wire and the negative pole of the battery does not light, then an ammeter must be used.
Turn off all electrical consumers, available clocks (and other regular consumers) turn off, close the doors.
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Reduce the measurement range of the ammeter until it is possible to read the reading from the instrument scale (the acceptable value is 1-3 mA).
By removing fuses in sequence, break various electrical circuits. If the ammeter needle moves to zero when the circuit is broken, then the fault should be looked for in this circuit.
The malfunction may be caused by corrosion and contamination of contacts, chafing of wires, or a short circuit inside the unit.
If no fault is detected in the fuse-protected electrical circuit, then it is necessary to disconnect the wires from the unit that is not protected by the fuse. Such a unit may be a generator or a starter.
If the ammeter needle drops to zero when the unit is switched off, the corresponding unit must be repaired or replaced. If current is lost in the starter or ignition system, always check the starter and ignition switch in accordance with the electrical diagram.
With the ignition off, connect the ground (-) wire to the battery.
Attention: Follow the instructions given in the chapter "Removal and installation the battery".
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