Yamaha VMX12 2001 Service Manual page 431

3. Voltage
• Connect the pocket tester (DC 20 V) to the
turn signal relay coupler (wire harness side)
as shown.
Positive tester probe → brown 1
Negative tester probe → ground
• Set the main switch to "ON".
• Measure the voltage (12 V) on brown 1 at
the turn signal relay coupler (wire harness
side).
• Is the voltage within specification?
YES
4. Voltage
• Connect the pocket tester (DC 20 V) to the
turn signal relay coupler (wire harness side)
as shown.
Positive tester probe → brown/white 1
Negative tester probe → ground
NO
The wiring circuit
from the main switch
to the turn signal
relay coupler is faulty
and must be
repaired.
SIGNALING SYSTEM
• Set the main switch to "ON".
• Set the turn signal switch to " " or "
• Measure the voltage (12 V) on brown/white
1 at the turn signal relay coupler (wire har-
ness side).
• Is the voltage within specification?
5. Voltage
• Connect the pocket tester (DC 20 V) to the
turn signal light connector or tachometer
coupler (wire harness side) as shown.
È Turn signal light
É Turn signal indicator light
Left turn signal light
Positive tester probe → chocolate 1
Negative tester probe → ground
Right turn signal light
Positive tester probe → dark green 2
Negative tester probe → ground
È
É
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ELEC
YES
The turn signal relay
is faulty and must be
replaced.
– +
".
NO