Diagnostics - Yamaha SZR 660 Service Manual

SIGNALLING SYSTEM
DIAGNOSTICS
THE FLASHER
LtGHTS,
BRAKE
LIGHT AND/OR WARNING
LIGHTS FAIL
TO TURN ON
THE
HORN
FAILS TO SOUND
Procedure
Check;
1.
Fuse 20A
(main)
2.
Battery
3.
Main switch
4.
Harness
connections
(entire
system
of
connections)
NOTE:
Before starting inspections,
remove
the following
parts:
1.
Seat
2.
Rear
cowling
3.
Cowling
To
check
for
operating
faults
use the following special
tools.
ft^
Pocket
tester:
V
P/N.YU-03112
P/N.
90890-03112
1.
Fuse
20A
(main).
Remove
fuse.
Connect the pocket
tester
(Qx1)
to
the
fuse-
Check
fuse continuity.
See
the
"FUSE INSPECTION AND
RE-
PLACEMENT"
section
in
CHAPTER
3.
DISCONTINUITY
Replace
the fuse.
o
CONTINUITY
2. Battery.
INCORRECT
Check
the conditions
of
the battery.
Consult the
"BATTERY INSPECTION"
sec-
tion
in
CHAPTER
3.
Voltage:
12.8V or
more
at
20°C <68°F)
Clean
the battery terminals.
Recharge
or
replace
battery.
Consult
the
"BATTERY INSPECTION"
sec-
Hon
in
CHAPTER
3.
Jl
CORRECT
*
SIGNALLING
SYSTEM
V
V
3.
Main switch
Disconnect the main switch connector from
the harness.
Connect
the pocket tester
(Qx1)
to
the main
switch terminals.
See
the
"SWITCH
CHECK"
section.
g
CORRECT
4.
Harness
connections.
Check the connections
of the entire signalling
system.
See
the
"ELECTRICAL CIRCUIT DIAGRAM
1
section.
o
CORRECT
Check
the conditions of
each
signalling
system
circuit.
See
the
"SIGNALLING SYSTEM CONTROL"
section.
DISCONTINUITY
The
main switch
is
defective.
Replace.
UNCERTAIN CONNECTIONS
Repair.
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