61 20 503 Vehicle battery - closed current monitoring (4' Series coupe, convertible, and GranCoupe sedan)

To access the battery ground lead, perform the necessary preliminary work described in the appropriate service information DISCONNECTING BATTERY GROUND LEADS .

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.