Yamaha 1999 YZF-R6, Service Manual

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