Arctic Cat Cougar Service Manual page 247

FUEL SYSTEM-FUEL-INJECTED MODELS
applied to the relay, resistance between the brass-
colored terminals should be no continuity (open
circuit).
NOTE
Make sure that voltage is applied only to
the gold-colored terminals in Step 3.
3. Apply a 12 volts power source to the gold-
colored terminals (Figure 9), then check conti-
Brass
b
JUlCJ'IC CAT
ElECTRONIC FUEL INJECTION
237
nuity between the brass terminals. Applying
power to the gold terminals should close connec-
tion between brass terminals and the resistance
should be near zero.
Dropping resistors-Each dropping resistor
reduces the voltage to the injector. On models
prior to 1997, the dropping resistor is located on
the back of the ECU mounting bracket (C, Fig-
ure 8). On 1997 and 1998 models, the dropping
resistor (Figure 10) is attached to a panel near
the oil reservoir. Use an accurate ohmmeter to
check the resistance between the white wire con-
nector and each of the black wire connectors.
Resistance of each should be 5.185-7.015 ohms.
Injector ground circuit-models prior to
1997. If one or both of the injectors fail to
operate, complete the following tests to deter-
mine if the cause is the dropping resistor, 10 amp
fuse, injector lead, injector or the wiring harness.
1. Tum the ignition switch off.
2. Detach the smaller of the two connectors
(Figure 11) from the ECU.
3. Position the connector as shown in Figure 12.
4. Attach a jumper wire to ground and touch
each wire (Figure 12) momentarily.
5. When the ground wire is touched to one pin,
you should hear one of the injectors click open.
Touching the other pin should cause the other
injector to click open.
®
Injector
pins