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Home >> BMW >> 2018 >> M4 2D Convertible, Automatic DCT Trans >> Repair and Diagnosis >> Restraints >> Air Bag, SRS >> General Electrical System - Repair -- M4 (F82 & F83) >> 61 20 Battery >> Vehicle battery - closed current monitoring

Vehicle battery - closed current monitoring

Preliminary work needed: 

To access the battery ground lead, perform the necessary preliminary work described in DISCONNECTING BATTERY GROUND LEAD .

Do not disconnect the battery ground lead! 

NOTE: If several 12V batteries are installed in the vehicle:
Closed-circuit current check is possible on the vehicle battery only  .

Connect diagnostic system.

Connect the clip-on probe to the battery ground lead of the vehicle battery. The arrow on the clip-on probe must point towards the vehicle battery.

Measure closed-circuit current.