Self-Study Program

15
The energy management control unit J644 is
identical to the control unit already known from the
A6 ´05 and A8 ´03.
Installation location
The energy management control unit J644 is
installed below the left-hand seat adjacent the
battery case.
Battery and energy management
Reference
For further information about the
energy management system, please
refer to Self-Study Programmes SSP
287 and SSP 326.
Express static current measurement
A so-called express static current measurement can be made in the Guided Fault Finding mode or the Guided
Functions mode under "61 - Battery control - Static current measurement using J644 - energy management
control unit" . The energy management system measures the actual static current in approx. 15 minutes. If the
static current is too high, a faultfinding program can be started directly from this program.
364_014
Energy management control unit
J644
BatterySeat frame