Yamaha XV1700P Service Manual page 479

Headlight
Positive tester probe →
Negative tester probe → black 3
High beam indicator light
Positive tester probe → yellow 4
Negative tester probe → black 5
Speedometer assembly coupler
• Set the main switch to "ON".
• Set the dimmer switch to "
• Measure the voltage (DC 12 V) of yellow
1 or green 2 on the headlight coupler,
and yellow 4 on the speedometer assem-
bly coupler.
• Is the voltage within specification?
YES
This circuit is OK.
yellow 1 or green 2
Dg Lg B
Ch Y Br
Ch Y Br
5
Dg Lg B
4
" or " ".
NO
The wiring circuit
from the main switch
to the headlight cou-
pler is faulty and
must be repaired.
7 - 41
LIGHTING SYSTEM
EAS00789
2. The tachometer and speedometer light fails
to come on.
1. Tachometer and speedometer light LED
• Check the LED of the tachometer and
speedometer light.
Refer to "CHECKING THE BULBS AND
BULB SOCKETS".
• Are the tachometer and speedometer light
LED OK?
YES
2. Voltage
• Connect the pocket tester (DC 20 V) to the
tachometer and speedometer assembly
couplers as shown.
Tachometer assembly coupler
Tachometer light
Positive tester probe → brown 1
Negative tester probe → black 2
Speedometer light
Positive tester probe → brown 3
Negative tester probe → black 4
– +
ELEC
NO
Replace the tachom-
eter assembly or
speedometer assem-
bly.
2
Y/L B
L Br
1
L Br
Y/L B