Yamaha 2005 BT1100 Supplementary Service Manual page 97

2. Voltage
• Connect the pocket tester (DC 20 V) to the
headlight and high beam indicator light cou-
plers as shown.
å When the dimmer switch is set to "
∫ When the dimmer switch is set to " 1"
Headlight
Tester positive probe
Green 2
Tester negative probe
High beam indicator light
Tester positive probe
Tester negative probe
Headlight coupler (wire harness side)
• Set the main switch to "ON".
• Set the dimmer switch to "
• Measure the voltage (12 V) of Yellow 1 or
Green 2 on the headlight coupler (headlight
side).
• Measure the voltage (12V) of Yellow 4 on
the meter assembly coupler.
• Is the voltage within specification?
YES
This circuit is OK.
2
"
¡
Yellow 1 or
¡
Black 3
¡
Yellow 4
¡
Black 5
2
" or "1".
NO
The wiring circuit
from the main switch
to the headlight cou-
pler is faulty and must
be repaired.
LIGHTING SYSTEM
EAS00789
2. A meter light fails to come on.
1. Meter light bulb and socket.
• Check the meter light bulb and socket for
continuity
Refer to "CHECKING THE BULBS AND
BULB SOCKETS".
• Are the meter light bulb and socket OK?
YES
2. Voltage
• Connect the pocket tester (20 V) to the meter
assembly coupler (wire harness side) as
shown.
Tester positive probe
Tester negative probe
• Set the main switch to "ON".
• Measure the voltage (12 V) of Brown 1
on the meter assembly coupler (wire harness
side).
• Is the voltage within specification?
YES
This circuit is OK.
89
ELEC
NO
Replace the meter
light bulb, socket or
both.
¡
Brown 1
¡
Black 2
NO
The wiring circuit
from the main switch
to the meter assem-
bly coupler is faulty
and must be re-
paired.