The battery discharges itself (Mazda Familia BG)

Depending on the vehicle's equipment, the battery's self-discharge is supplemented by the energy consumption of constantly operating consumers. Therefore, the battery in a vehicle that is not in use should be charged once every 4 weeks. If there is a suspicion of surface leakage currents, the on-board network should be checked as follows:

Use a charged battery to check.

1. Disconnect the ground cable from the battery.

Warning! This will erase the engine fault memory or the radio security code. Before disconnecting the battery, read the instructions in Section Removal and installation the battery.

2. Set on the ammeter (with measurement limits of 0-5 mA and 0-5 A) highest measurement limit. Connect the ammeter between the negative battery terminal and the ground cable.

Attention! The check can be carried out using an indicator. If the indicator lamp between the ground cable and the negative battery terminal does not light, you should use an ammeter in any case.

3. Turn off all electrical consumers and close the doors.

4. Switch the ammeter measurement ranges until the readings appear (1-3 mA is acceptable).



5. Remove fuses one by one, opening various current circuits. If the readings drop to 0 when opening one of the circuits, you should look for the source of the malfunction here. Possible errors: corroded and dirty contacts, frayed wires, internal short circuit in the units.

6. If no fault is detected in the circuits protected by fuses, the wires of the units not protected by fuses should be disconnected: generator, starter, ignition system.

7. If the readings drop to 0 when one of the unprotected circuits is disconnected, repair or replace the corresponding element. If current is lost in the starter or ignition system, always check the ignition and starter switch according to the diagram.

8. Connect the ground cable to the battery.

9. If available, set the time on the clock and set the security code for the radio receiver.