Fig. 4-116
AO030
FUEL PUMP CIRCUIT
The fuel pump and its circuit are provided with current
from the fuel pump coil on the stator.
Fig. 4-117
AO142D
For this circuit to function correctly, five components
must be in good working order.
Check the following components before considering the
fuel pump assembly to be defective.
A. Fuel pump coil - see coil test procedure.
B. Emergency stop switch and ignition switch must
be ON and in good working order.
C. Fuel pump - see fuel pump test procedure.
D. Wiring harness and connectors - clean the
connectors and test the harness.
E. ECU.
Self-Diagnostic
EFI System
INTRODUCTION
The Electronic Control Unit (ECU) contains a built-in,
self-diagnostic system which detects trouble within the
five-sensor signal network and then flashes a code on
the LED signal light, located under the left end of the
ECU.
Fig. 4-118
AO153D
The fuel system and the ignition system remain two
separate systems. In a no-start situation, first determine
if the problem is caused by lack of ignition or by a fuel
delivery problem.
Using the EFI Ignition Anaylzer, equipped with the
update EPROM (chip) and test harness, connect the test
harness to the ECU diagnostic connectors. Connect the
test harness red external lead to the positive terminal of
a 12-volt battery and connect the black external test
harness lead to the negative terminal.
If any of the circuits are faulty, a trouble code will now
be flashed by the LED.
If no code is flashed, turn on the analyzer. Press the
MENU SELECT buttons until the words KOKUSAN
appear on the display; then press the TEST button. The
analyzer is now programmed for testing the Arctic Cat
Batteryless EFI System.
Using the MENU SELECT buttons, press the button
repeatedly until Memory Problem Diagnosis Test
appears on the display; then press the TEST button. If
any sensors have intermittent problems, they will be
indicated on the display.
Proceed to individual components test procedures
covered throughout this section.
4
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