Self-Study Program

20
Control units
Power-down level history
The data on the previous 15 power-down levels is entered into the power-down level history.
Display on tester
Interpreting the data in the power-down level history:
Example: 2*2*-12.50*30*2003-10-31-10:10:25*0-0-0-0-0-0*06.5**
The data record is output together with the information in alphanumeric text. This simplifies evaluation.
Reasons for triggering
0 = electrical current related
1 = battery charge too low and/or battery internal resistance too high and/or capacitance loss Qv too high
2 = starting-critical battery voltage at present discharge current
3 = 1 and 2 simultaneously
4 = state of charge < 30%
5 = 1 and 4 simultaneously
6 = 2 and 4 simultaneously
7 = 1, 2 and 4 simultaneously
Power-down levels are also registered in the fault memory. The difference to the history data is that the initial
activation of a power-down level is recorded in the fault memory in the new Audi A6 ‘05 and A8 ‘03. In the Audi
Q7, only the note "Energy management system active" is entered when any power-down level is set. The most
recent value is always output in the history data.
2 = power-down level 2 was set
2 = reason for triggering of power-down level (2 = low battery charge)
-12.50 = mean total discharge current in A during the set power-down level
30 = battery state of batches (SOC = state of charge)
2003-10-31 = date
10:10:25 = time
0 = hazard warning lights OFF (1 = hazard warning lights ON)
0 = parking lights OFF (1 = parking lights ON)
0 = side lights OFF (1 = side lights ON)
0 = low beam headlights OFF (1 = low beam headlights ON)
0 = fog lights OFF (1 = fog lights ON)
0 = main beam OFF (1 = main beam ON)
06.5 = terminal 15 "on" time in hours (engine was OFF during this period)
Power-down level history =
2*0*-04.57*77*2005-06-23, 14:02:19*0-0-0-0-0-0*03.1**
.
.
.
5*2*-10.76*21*2005-06-11. 10:38:45*0-0-0-0-0-0*06.7**
The previous 15 entries are displayed.