Ignition System, Ecu 950 Adventure - KTM 2003 950 Adventure Repair Manual

7-13
30
3
start/stop switch
C_BB/9
C_AB/9
1 2 7
orange 0.5
black-orange 0.5
orange 0.5
1
4
E
C
U
orange 1
31

Ignition system, ECU 950 Adventure

NOTE: this is a digital battery ignition system with the current supplied by the battery.
Battery voltage from the battery
on emergency OFF switch
3
The pulse generator reports the crankshaft position to the ECU
5
each cylinder.
Battery voltage is supplied to both ignition coils
The coil on the fuel pump relay
switches on for a few seconds and switches off again. If you start with the engine running, the fuel pump relay will stay on.
The fuel pump obtains battery voltage from the battery through the switched on ignition lock
8
on the fuel pump relay.
The throttle potentiometer (TPS)
connector AM or AR). The TPS is supplied with 5 volts of supply voltage (blue cable on connector AM or AR) by the ECU. The
black cable (on connector AM or AR) supplies the ground.
NOTE: See page 8-11 for the adjustment of the TPS.
The ECU receives a ground signal via the connected octane selector
for fuel with a minimum octane number of 95 (ROZ 95). If the octane selector is disconnected (connectors BA and BF pulled
apart) the engine can be operated with fuel with a minimum quality of ROZ 80.
5
pick up
fuse
10 A
C_AT/2
C_AL1/2
2 1
20
2
yellow-blue 0.5
3
yellow-white 0.5
16 blue 0.5
10 yellow 0.5
1 black 0.5
8
6
13
7
4
11
19 violet-white 0.5
25
brown-white 0.5
26
red-green 0.5 orange 0.5
18
2 1 2 1
C_AW/2 C_AW1/2
EPC 1 EPC 2
flows to the ECU (control unit)
1
.
via the emergency OFF switch, the ground is switched by the ECU.
6
obtains battery voltage from the ECU. After the ignition is switched on, the fuel pump relay
7
reports the position of the carburetor throttle valves to the ECU via the yellow cable (on
9
orange 1
9
throttle position sensor
C_AR1/2
C_AM/3
3 2 1
blue-grey 0.5
pink 0.5
blue-white 0.5
black-brown 0.5
yellow-brown 0.5
grey 0.5
1
6
C_AR/3
2 2
1 1
C_AM2/3
C_AS1/2 C_AS/2
2nd
front rear
neutral switch (N) / 2nd gear / 3th gear
through the switched on ignition lock
4
. The ECU uses this signal to calculate the ignition point for
4
(connector BA and BF) and uses the stored ignition curve
bk
7
fuel pump relay
B
page 2/9
C
page 7/9
2
bk
1
C_BA/1
octane selector
C_BF/1
1
3th N
and the switched
2
, via the fuse and the contact
2
30
2
orange 1
fuse
5 A
3
2
4
1
2 1
8
C_AT/2
M
31