Electronic Module, Trigger Set - Rotax 912 Series Maintenance Manual

13.4.3)
fig. 093
4
5
Effectivity: 912 Series
AIRCRAFT ENGINES
MAINTENANCE MANUAL II
— Check short-circuit cables and ignition switch. If an ignition switch
failure is suspected, the short-circuit cable can be withdrawn from the
ignition switch.
WARNING: Proceed with particular care because the ignition is not
switched off.
— Assure sufficient ground connection between engine, battery and
fuselage. Respect the wiring diagram of the aircraft manufacturer.

Electronic module, trigger set

See fig. 092 and 093.
— If one ignition circuit failed, the two 4-pole plug connectors Q of the
trigger cables may be interchanged. For this, connect the plug W of the
triggers A1/2 and A3/4 (coded with red and blue colour mark E on the
cable ends) to the electronic module T of ignition circuit "B" (bottom
module). R = electronic module "A" (top module).
If the failure remains with the ignition circuit, either the electronic module or
the charging coil on the stator is the cause. If renewal of the respective
electronic module does not help, the charging coil is defective. Remove
and renew the stator (see para 13.4.14).
If the failure passes on with the ignition circuit, the triggers are the cause.
In both cases the disassembly work described below is necessary (see
para 13.4.9 and 13.4.10).
NOTE: The electronic modules are marked on the front side with
part no. and serial number!
00399
2
3
1
Initial issue, Jan. 01/2002
fig.092
00398
page 62