Disconnect the negative cable from the battery.
Measure the current between the negative battery terminal and the negative battery cable.
If the leakage current is not within the standard, measure the leakage current by removing fuses one by one from the main fuse box and fuse box.
Caution! Switching on electrical consumers when measuring leakage current may damage the measuring device.
Standard current: 20mA (maximum).
Check and repair the fuse harnesses and connectors that, when removed, caused the measured current to decrease.
