There are many consumers connected to the car's on-board network, some of them continue to be powered by the battery even when the ignition is turned off. As a result, after some time of inactivity, the battery is completely discharged, and there is simply not enough charge to start the engine. The problem can only be solved by determining what exactly consumes energy.
What you will need:
- Multimeter;
- screwdriver;
- pliers;
- worm clamp.
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The process of finding a current leak with your own hands
First you need to determine how much current leakage occurs when the ignition is turned off. To do this, you need to remove one of the battery terminals and clamp the probe onto its contact using a clamp. multimeter.
On the device itself, it is necessary to switch the switching position to the current measurement mode of 10 A.
Second dipstick multimeter connects to the terminal removed from the battery. If the positive is removed from the battery, it is important to ensure that the terminal does not come into contact with the conductors. If there is such a possibility, then it is better to remove the ground for connection multimeter, it will be safer for wiring.
Then we look at the value multimeter. Losses of up to 50 mAh are considered normal. If the device shows more, then accordingly you need to find which consumer is actively taking energy. To do this, you need to remove and replace the fuses one by one from the fuse block, and see how much current leakage decreases.
After this, looking at the diagram on the cover of the unit and looking at the car’s operating manual, you can understand what kind of consumer this is.
By accurately diagnosing the problem, you can solve it. Often consumption occurs due to a slight short circuit. Then it is necessary to inspect the contacts on the problematic consumer and clean them. It may be necessary to replace a pinched wire with exposed insulation, if one is found.
