Epc System - KTM 400-660 LC4 1998-2005 Repair Manual

7-17E
2
1
1
Battery (12V / 8 Ah)
2
Main fuse (20 A)
3
Ignition lock
4
Fuse for ignition and start system
5 EPC-control unit
6 Ignition lock
7 Contact screw 2nd gear
8
Contact screw 3rd gear
9
Micro switch
bk
Solenoid valve
bl . . . . . . . . .blue
br . . . . . . . . .brown
ge . . . . . . . .yellow
gr . . . . . . . . .grey
g . . . . . . . . .green
o . . . . . . . . .orange
r . . . . . . . . . .red
ra . . . . . . . . .pink
s . . . . . . . . . .black
v . . . . . . . . .violet
w . . . . . . . . .white
4
3
5
ge-bl
g-r
r-s
s-o
bl-s
br
6

EPC system

Function:
From the battery
via the main fuse
The blue/white cable leading to the ignition coil
signal to the EPC controller
then calculate the current speed.
When the throttle grip is opened all the way (microswitch
a certain speed, the EPC controller will activate the solenoid valve
provided that either the 2nd or the 3rd gear has been engaged.
By opening the solenoid valve
to the upper end of the slide membranes of the carburetor. This causes
the throttle slide to open slowly. Thereby, the operating noise of the
motorbike is reduced.
NOTE: If malfunctions develop in the EPC system, the EPC controller
can be unplugged. This will not cause damage to any other parts of the
motorcycle.
10
7
1
, battery voltage is supplied to the EPC controller
2
, the activated ignition lock
5
. Using this signal, the EPC controller will
bk
, a dosed amount of fresh air will get
8 9
3 4
, and the fuse
6
provides an r.p.m.
9
closes) at
5
.
bk
,