Service manual

ELEC
SIGNAL SYSTEM
8-36
1. “HORN” switch
• Disconnect the “HORN” switch (Left hand-
lebar switch) couplers from the wire har-
ness.
• Connect the pocket tester (Ω 1) to the
“HORN” switch.
Positive tester probe

Pink Terminal
Negative tester probe

Black Terminal
• Check the “HORN” switch for continuity.
Switch Good Bad
position condition condition
“HORN” switch  XX
is pushed
“HORN” switch
X  X 
is not pushed
:Continuity X: No continuity
• Is the oil level switch OK?
HORN DOES NOT SOUND, WHEN PUS-
HING “HORN” SWITCH
2. Voltage
• Connect the pocket tester (DC20V) to the
horn terminal.
Positive tester probe

Brown 
Terminal
Negative tester probe

Frame ground.
• Turn the main switch to “ON”.
• Check the horn voltage.
Horn voltage
12.0 V
EAS00795
3. Wiring
• Check the entire signal system’s wiring.
Refer to “CIRCUIT DIAGRAM”.
• Is the signaling system’s wiring properly
connected and without defects?
Replace the
“HORN” switch.
YES
NO
Properly connect or
repair the signaling
system’s wiring.
Check the condition of
each of the signaling
system’s circuits. Refer
to “CHECKING THE
SIGNALING SYSTEM”.
YES
NO