Content .. 70 71 72 73 ..

Snowmobile Arctic Cat 2-Stroke (2007 year). Manual - part 72

5-18

AK014

4. Charge coil (1) resistance must be between 12-18

ohms.

CHARGE COIL (2)

1. Disconnect the three-wire plug from the CDI unit

to the magneto.

2. Set the selector in the OHMS position.

3. Connect the red meter lead to the brown/white

wire in the plug; then connect the black meter lead

to the green/red wire in the plug.

AK013

4. Charge coil (2) resistance must be between 12-18

ohms.

IGNITION TIMING SENSOR

1. Disconnect the green/white and brown wires from

the timing sensor to the main harness.

AO102D

2. Set the selector in the OHMS position.

3. Connect the red tester lead to the green/white wire;

then connect the black tester lead to the brown

wire.

4. Ignition timing sensor resistance must be between

148-222 ohms.

LIGHTING COIL

1. Disconnect the main wiring harness from the

engine.

2. Set the selector in the OHMS position.

3. Connect the two meter leads to each of the yellow

leads in the connector from the engine.

AK015

4. Lighting coil resistance must be between 0.12-

0.18 ohm.

SPARK-PLUG CAP

1. Remove the spark-plug caps from the high tension

wires.

2. Set the selector in the OHMS position.

3. In turn on each cap, touch a tester lead to each end

of the spark-plug cap.

B170

4. Spark-plug cap resistance must be between 4000-

6000 ohms.

5-19

IGNITION SWITCH

1. Remove the main wiring harness connectors from

the ignition switch.

2. Rotate the key to the OFF position.

3. The meter must read less than 1 ohm resistance

between the ignition switch terminals.

4. Rotate the key to the RUN position.

5. The meter must read OL (infinite resistance).

Voltage Regulator Test

(Carbureted Models)

NOTE: The following test should be made using
MaxiClips (p/n 0744-041) and the Fluke Model 73
Multimeter (p/n 0644-191) set to the AC Volt scale.

NOTE: Test specifications are on the Electrical
Specifications (Individual) pages in this section.

This test should be made at the accessory connector of

the hood harness.

1. Connect the red maxiclip and meter lead to the

yellow wire in the connector; then connect the

black maxiclip and meter lead to the brown wire in

the connector.

2. Start the engine and allow it to idle. Meter reading

must be within specification.

Chassis Control

Unit Voltage Test

(EFI Models)

NOTE: The following test should be made using
MaxiClips (p/n 0744-041) and the Fluke Model 73
Multimeter (p/n 0644-191) set to the DC Volt scale.

NOTE: Test specifications are on the Electrical
Specifications (individual) pages in this section.

NOTE: The CCU tests were made with the con-
nectors plugged in, spark plugs removed and
grounded, and by pulling the recoil starter rope
briskly.

LOW POWER

1. Connect the red maxiclip and meter lead to the

red/blue lead of the connector; then connect the

black maxiclip and meter lead to the black lead of

the connector.

2. Pull the recoil starter rope briskly.

3. Meter reading must be within specification.

Repeat test three times to confirm results.

HIGH POWER

1. Connect the red maxiclip and meter lead to the

red/black lead; then connect the black maxiclip

and meter lead to the black lead.

2. Pull the recoil starter rope briskly.

3. Meter reading must be within specification.

NOTE: Repeat this test three times to confirm
results.

Servomotor Test

NOTE: A 12-volt battery and test leads will be
needed for this test.

1. Remove the servomotor from the snowmobile.

2. Contact the red/black servo terminal with the bat-

tery positive lead; then contact the black/red servo

terminal with the battery negative lead.

3. The servo should rotate when the negative lead

contacts the black/red terminal. Note the direction

of rotation.

! WARNING

Most voltages generated by the ignition system are
sufficient to interrupt pacemakers! All technicians,
especially those using pacemakers, must avoid con-
tact with all electrical connections after the engine
has been started.

! WARNING

! CAUTION

Care must be taken not to contact the servo yellow,
orange, or black/white terminals, or damage to the
potentiometer circuit will result.

5-20

4. Reverse the connections on the servo terminals:

positive lead to black/red and negative lead to red/

black. The servomotor should rotate in the oppo-

site direction.

5. Install the servomotor.

NOTE: If the servo operates correctly in the
above test but fails to operate when connected to
the ECU/CDI at the designated RPM, proceed to
Potentiometer Test.

Potentiometer Test

NOTE: The following test should be made using
MaxiClips (p/n 0744-041) and the Fluke Model 73
Multimeter (p/n 0644-191) set to the ohms scale.

1. Remove the servomotor from the snowmobile.

2. Connect the red maxiclip and meter lead to the

black/white servo terminal; then connect the black

maxiclip and meter lead to the yellow servo termi-

nal.

3. Rotate the servo pulley counterclockwise. The

ohms should increase as the pulley is rotated until

it reaches 4700-5000 ohms.

4. Continue the pulley rotation, and there will be a

small area in the rotation at which the ohm reading

will disappear; then it will return again.

5. Continue the pulley rotation, and the ohms should

appear at a very low value but will again increase

to 4700 ohms. This is normal operation.

6. Install the servomotor.

NOTE: If the servo operates correctly and the
potentiometer test is correct but fails to operate
when connected to the ECU/CDI at the designated
RPM, replace the ECU/CDI.

Peak Voltage Tests

(Carbureted Models)

NOTE: The following tests should be made using
the Fluke Model 73 Multimeter (p/n 0644-191) set to
the DC Volt scale with Peak Voltage Reading
Adapter (p/n 0644-307).

NOTE: Peak voltage test specifications are on the
Electrical Specifications (Individual) pages in this
section.

The Fluke Multimeter w/Adapter can perform the fol-

lowing tests.

A. Stator/Charge Coil(s) Output

B. Lighting Coil Output

C. Primary Coil Output

NOTE: Peak Voltage Tests were made with con-
nectors plugged in, spark plugs removed and
grounded, and by pulling the recoil starter rope
briskly.

STATOR (Charge) COIL OUTPUT

(370 cc)

1. Connect the red meter lead to the red/white wire

from the stator; then connect the black meter lead

to the black/red wire from the stator.

2. Pull the recoil starter rope briskly. Meter reading

must be within specification.

LIGHTING COIL OUTPUT

1. Connect the red meter lead to one yellow wire; then

connect the black meter lead to the other yellow wire.

2. Pull the recoil starter rope briskly. Meter reading

must be within specification.

CHARGE COIL (1) OUTPUT (570 cc)

1. Connect the red meter lead to the black/red wire;

then connect the black meter lead to the green/red

wire.

2. Pull the recoil starter rope briskly. Meter reading

must be within specification.

CHARGE COIL (2) OUTPUT (570 cc)

1. Connect the red meter lead to the brown/white

wire; then connect the black meter lead to the

green/red wire.

2. Pull the recoil starter rope briskly. Meter reading

must be within specification.

PRIMARY COIL OUTPUT

1. Connect the red meter lead to the orange wire;

then connect the black meter lead to the black wire

(370 cc) or to the black/white wire (570 cc).

2. Pull the recoil starter rope briskly. Meter reading

must be within specification.

! WARNING

5-21

Peak Voltage Tests

(500/600 cc Models)

NOTE: The following tests should be made
using the Fluke Model 73 Multimeter (p/n 0644-191)
set to the DC Volt scale with Peak Voltage Reading
Adapter (p/n 0644-307). For “engine running” test,
use MaxiClips (p/n 0744-041).

NOTE: Peak voltage test specifications are on
the Electrical Specifications (Individual) pages in
this section.

The Fluke Multimeter w/Adapter can perform the fol-

lowing output tests.

A. Fuel Pump Coil

B. Injector Coil

C. Charge Coil (1) Output

D. Charge Coil (2) Output

E. Ignition Timing Sensor

F. Primary Coil Output

G. Lighting Coil Output

NOTE: Peak Voltage Tests (unless otherwise
indicated) were made with connectors unplugged,
spark plugs removed and grounded, and by pull-
ing the recoil starter rope briskly.

FUEL PUMP COIL

1. Test between the two orange/white wires in the

four-prong connector from the stator.

2. Pull the recoil starter rope briskly. Meter reading

must be within specification.

INJECTOR COIL

1. Test between the two blue/white leads in the con-

nector harness from the stator plate.

2. Pull the recoil starter rope briskly. Meter reading

must be within specification.

CHARGE COIL (1) OUTPUT

1. Test between the black/red and green/red wires in

the triple-plug connector from the stator.

2. Pull the recoil starter rope briskly. Meter reading

must be within specification.

CHARGE COIL (2) OUTPUT

1. Test between the brown/white and green/red wires

in the triple-plug connector from the stator.

2. Pull the recoil starter rope briskly. Meter reading

must be within specification.

IGNITION TIMING SENSOR

1. Test between the green/white and brown/green

wires in the connector from the sensor.

2. Pull the recoil starter rope briskly. Meter reading

must be within specification.

PRIMARY COIL OUTPUT

1. Connect the red meter lead to the black/orange

wire; then connect the black meter lead to the

orange/red wire.

2. Pull the recoil starter rope briskly. Meter reading

must be within specification.

LIGHTING COIL OUTPUT

1. Connect the red meter lead to one yellow wire;

then connect the black meter lead to the other yel-

low wire.

2. Pull the recoil starter rope briskly. Meter reading

must be within specification.

LIGHTING COIL OUTPUT
(@ 2000 RPM)

1. Attach the red maxiclip to the yellow lead; then

attach the black maxiclip to the brown lead.

2. Connect the red meter lead to the red maxiclip;

then connect the black meter lead to the black

maxiclip.

3. With the rear of the snowmobile on a shielded

safety stand, run the engine at 2000 RPM.

4. Meter reading must be within specification.

! WARNING

Content .. 70 71 72 73 ..