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CHECKING THE COUPLERS AND
LEADS CONNECTION
1. Check:
• Couplers and leads connection
Rust/dust/looseness/short-circuit
Repair or replace.
CHECKING THE MULTI-FUNCTION
DISPLAY INPUT VOLTAGE
1. Disconnect the multi-function dis-
play coupler.
2. Set the main switch to "ON".
3. Measure:
• Multi-function display input volt-
age
Out of specification
wire harness.
Tester (+) lead
Brown lead "1"
Tester (-) lead
Black lead "2"
Multi-func-
Tester se-
tion dis-
lector posi-
play input
voltage
10 V or
more
Make sure that a short-circuit does
not develop between the terminals
because it may cause damage to
electrical components.
CHECKING THE MULTI-FUNCTION
DISPLAY OUTPUT VOLTAGE
1. Disconnect the multi-function dis-
play coupler.
2. Set the main switch to "ON".
3. Measure:
• Multi-function display output volt-
age
Out of specification
multi-function display.
Tester (+) lead
Red lead "1"
Tester (-) lead
Black/White lead
"2"
Multi-func-
Tester se-
tion dis-
lector posi-
play output
voltage
4.5 V or
more
Make sure that a short-circuit does
not develop between the terminals
because it may cause damage to
electrical components.
Replace
CHECKING THE SPEED SENSOR
OUTPUT VOLTAGE
1. Insert the thin electric conductors
"1" (lead) into the speed sensor
coupler "2", as shown, and con-
nect the tester to them.
Tester (+) lead
tion
Tester (-) lead
DCV-20
• Do not insert the electric conduc-
tors more than required because
it may reduce the waterproof
function of the coupler.
• Make sure that a short-circuit
does not develop between the
terminals because it may cause
damage to electrical compo-
nents.
2. Set the main switch to "ON".
3. Measure:
• Speed sensor output voltage
Output voltage not correct
place the speed sensor.
Replace
Measurement steps:
a. Elevate the front wheel and slowly
rotate it.
b. Measure the voltage (DCV) of
white lead and black lead. With
each full rotation of the front
wheel, the voltage reading should
cycle from 0.6 V to 4.8 V to 0.6 V
to 4.8 V.
tion
DCV-20
SIGNALING SYSTEM
White lead "3"
Black lead "4"
Re-
7-21

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Wr250fx

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