Checking The Fuel Pump Relay; Checking The Ignition Coils - KTM 950 ADVENTURE 2003 Manual

7-7
1
A
B
4
ECU
Check the cables and socket connectors on the ECU
A functional check of the ECU can only be performed on an ignition test
stand.
– Check the ignition coil control: remove the ignition coil connector and
apply the measuring tips of the peak voltage adapter to the pins of
the connector AS (see
– Actuate the tip switch and let the starter engine run for a few seconds
N
EVER TEST THE
DESTROY HIGHLY SENSITIVE ELECTRONIC COMPONENTS
Checking the pulse generator
– Disconnect the connectors AL and AT and apply the measuring tips of
the peak voltage adapter to the connector AT
yellow/white cable colors).
– Actuate the tip switch and run the starter engine for a few seconds.
NOTE: make sure the battery is fully charged.
– If the measured value deviates from the set point value, measure the
resistance of the pulse generator:
2
NOTE: if the resistance figure is correct but the signal voltage deviates,
check the distance between the pulse generator and the pulse generator
wheel (see page 6-9)

Checking the fuel pump relay

– Dismount the fuel pump relay
NOTE: black/blue, blue/gray, yellow/black and brown cable colors
3
– Connect the fuel pump relay to a 12 V battery as shown, making sure
you hear the relay switch (nonrecurring "click").
NOTE: the 12 V battery must be connected to the two terminals to
which the blue/gray and brown cable colors are connected when the
plug is connected.
– Use an ohmmeter to measure the continuity between the terminals
A
and

Checking the ignition coils

– Disconnect and remove the ignition coil
– Use an ohmmeter to obtain the following measurements:
2
Resistance of the primary coil (measured between the terminals):
Resistance of the secondary coil (measured between one terminal and
the spark plug connector: 9.4 – 17.6 Ω... at 20°C
NOTE:
– Repeat the measurement for the other ignition coil.
– Replace the respective ignition coil if the measurement deviates
significantly from the set point value.
4
on the lower photo).
Multimeter reading: 12 volts
! CAUTION
ECU
WITH A CONVENTIONAL MEASURING DEVICE
Digital multimeter reading: 4.0 volts +/- 0.5 volts
190 - 300 ... at 20°C
3
.
B
.
Reading: max. 1 Ω OK
Reading: ∞ Ω defective
1.0 – 1.6 Ω.... at 20°C
1
.
!
.
THIS MAY
.
2
(yellow/blue and
2
.