Yamaha 2009 YW125Y, Руководство по обслуживанию

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7-37
- +
ELEC
4. Voltage
8
Connect the pocket tester (DC 20 V) to the
horn connector at the pink terminal as
shown.
Positive tester probe
J J J J J
pink
1 1 1 1 1
Negative tester probe
J J J J J
ground
8
Set the main switch to “ON”.
8
Measure the voltage (DC 12 V) of pink
1
at
the horn terminal.
8
Is the voltage within specification?
YES NO
EAS00796
CHECKING THE SIGNALING SYSTEM
1. The horn fails to sound.
1. Horn switch
8
Check the horn switch for continuity.
Refer to “CHECKING THE SWITCHES”.
8
Is the horn switch OK?
YES NO
Replace the left
handlebar switch.
2. Voltage
8
Connect the pocket tester (DC 20 V) to the
horn connector at the horn terminal as
shown.
Positive tester probe
J J
J J J
brown
1 1 1 1 1
Negative tester probe
J J J J J
ground
8
Set the main switch to “ON”.
8
Push the horn switch.
8
Measure the voltage (DC 12 V) of brown at
the horn terminal.
8
Is the voltage within specification?
YES NO
The wiring circuit from
the main switch to the
horn connector is
faulty and must be re-
paired.
Refer to “CIRCUIT
DIAGRAM”.
3. Horn
8
Disconnect the pink connector at the horn
terminal.
8
Connect a jumper lead
1
to the horn termi-
nal and ground the jumper lead.
8
Set the main switch to “ON”.
8
Push the horn switch.
8
Does the horn sound?
NO YES
The horn is OK.
Replace the horn.
Repair or replace the
horn.
1
Br P
1
Br
P
SIGNALING SYSTEM
1
Br
P