Inspection Of Ac Circuit Isolation; Inspection; Inspection Of Heating Elements - BOMBARDIER ski-doo Tundra Scandic 2004 Series Shop Manual

Section 06 ELECTRICAL
Subsection 06 (TESTING PROCEDURE)
TEST TO BE
PART
PERFORMED
Output
Lighting
Coil
generator
insulation
coil
Ground
continuity
NOTE: Stop switches include the ignition switch and the engine cut-out switch.
It is important to take note that voltage measurements must be taken while starting the vehicle using the
manual starter.
Voltages obtained upon starting are proportional to the force applied onto the manual starter. A low voltage
is therefore normal under a low cranking force.
Perform testing in the prescribed order and replace any parts not performing according to specifications.
It is important to resume all test when replacing a component.
It not specified, the probe connecting sequence is not important.
INSPECTION OF AC CIRCUIT
ISOLATION
All Electric Start Models
If AC circuit is not isolated from frame, headlamp
beam will weaken.

INSPECTION

Disconnect regulator/rectifier.
On models with hydraulic brake, pull off the rubber
boot from brake light microswitch assembly.
Connect one digital ohmmeter probe (needle ohm-
meter will not offer enough precision) to frame and
other probe to one of 2 YELLOW magneto wires.
Measured resistance must be infinite. If such is
not the case, it means there is a connection be-
tween AC circuit and DC circuit.
Disconnect one accessory at the time to identify
the faulty circuit.
06-06-22
LIGHTING SYSTEM TESTING (Skandic WT LC/SUV 290 W)
RESISTANCE Ω
WIRE
VALUE MULTIMETER
COLOR
(ohms)
YL and YL 00.1 - 00.4
YL and
0.L
engine
BK and
00.0 - 00.5
engine
VOLTAGE V
VALUE MULTIMETER
SCALE (volts)
00.0
0.5 - 2.0
Ω
00.0
—
MΩ
00.0
—
Ω
INSPECTION OF HEATING
ELEMENTS
All Skandic Models
All measurements must be performed at 21°C
(70°F).
Throttle Lever Heating Element
Current Measurement
HIGH
INTENSITY
LOW
BROWN
INTENSITY
Handlebar Grip Heating Element
Resistance Measurement
LOW YELLOW
INTENSITY
ORANGE
HIGH
YELLOW
INTENSITY
➀ When measuring resistance at terminals the ac-
tual value will be half the measurement in table.
The reason for that is the elements are connect-
ed in parallel. Therefore the total resistance is
half the resistance of one element.
NOTE
SCALE
00.0 VAC —
—
The term "engine" refers to the
engine metal parts connected
to the magneto housing.
—
BROWN wire
minimum
/
YELLOW wire
minimum
17.7 to ➀
/
BLACK wire
/ 20.7 ohms
VIOLET wire
8.73 to ➀
/
BLACK wire
ORANGE wire 10.67 ohms
MMR2004-134_06_06A.FM
0.23 A
0.13 A