Yamaha YZF-R6 99 Service Manual page 366

Headlight
Tester positive probe !
Tester negative probe ! black
High beam indicator light
Tester positive probe !yellow
Tester negative probe ! black/blue
Meter assembly coupler (wire harness side)
S Set the main switch to "ON".
S Set the light switch to "
S Set the dimmer switch to "
S Measure the voltage (12 V) of yellow (green)
2 on the headlight coupler (headlight side).
S Is the voltage within specification?
YES
4. Headlight relay (Hi or LO)
S Disconnect the headlight relay from the cou-
pler.
S Connect the pocket tester (
tery (12 V) to the headlight relay terminals as
shown.
Battery positive terminal ! white/yellow
Battery negative terminal ! black
Tester positive probe !
Tester negative probe ! red/yellow
yellow or green
1 2
3
1
4
".
" or " ".
NO
The wiring circuit
from the main switch
to the headlight cou-
pler is faulty and must
be repaired.
1) and bat-
(white /green)
1
2
yellow (green)
4
3
LIGHTING SYSTEM
S Does the headlight relay have continuity be-
tween yellow (green) and red/yellow?
YES
This circuit is OK.
EB805411
2. Illumination fails to come on.
1. Meter light bulb and socket.
S Check the meter light bulb and socket for
continuity.
Refer to "CHECKING THE BULBS AND
BULB SOCKETS".
S Are the meter light bulb and socket OK?
YES
2. Voltage
S Connect the pocket tester (20 V) to the meter
assembly coupler (wire harness side) as
shown.
Tester positive probe ! blue
Tester negative probe ! black/blue
8-32
ELEC
NO
Replace the head-
light relay.
NO
Replace the meter
light bulb, socket or
both.
1
2