Yamaha VINO YJ50RAP, Service Manual

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ELEC
EAS00787
YES
NO
EAS00788
CHECKING THE LIGHTING SYSTEM
1. The headlight and the high beam indicator
light fail to come on.
YES
NO
YES
NO
5. Wiring
• Check the entire lighting system’s wiring.
Refer to “CIRCUIT DIAGRAM”.
• Is the lighting system’s wiring properly
connected and without defects?
Check the condi-
tion of each of the
lighting system’s cir-
cuits.
Refer to “CHECK-
ING THE LIGHT-
ING SYSTEM”. Properly connect or
repair the lighting
system’s wiring.
1. Headlight bulb and socket
• Check the headlight bulb and socket for
continuity.
• Are the headlight bulb and socket OK?
Replace the head-
light bulb, socket or
both.
2. Voltage
• Connect the pocket tester (DC 20 V) to the
headlight and high beam indicator light
couplers as shown.
È
When the dimmer switch is set to “ ”.
É
When the dimmer switch is set to “ ”.
Headlight coupler (wire harness side)
Positive tester probe
→
yellow
1
Negative tester probe
→
black
3
Headlight
Positive tester probe
→
yellow
1
or green
2
Negative tester probe
→
black
3
High beam indicator light
Positive tester probe
→
yellow
4
Negative tester probe
→
black
5
Meter light assembly coupler (wire harness side)
• Set the main switch to “ON”.
• Start the engine.
• Set the dimmer switch to “
” or “ ”.
• Measure the voltage (12 V) of green
2
on
the headlight coupler (wire harness side).
• Is the voltage within specification?
This circuit is OK.
Br B
Br/W
Gy
Y
Br/W
Gy
Br
Y
B
4
5
LIGHTING SYSTEM
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