Yamaha YZF-R1P Service Manual page 418

Left turn signal light
Positive tester probe → chocolate 1
Negative tester probe → ground
Right turn signal light
Positive tester probe → dark green 2
Negative tester probe → ground
È É
Ê
• Set the main switch to "ON".
• Set the turn signal switch to "
• Measure the voltage (DC 12 V) of the
chocolate 1 or dark green 2 at the turn
signal light connector (wire harness side).
• Is the voltage within specification?
YES
This circuit is OK.
EAS00801
4. The neutral indicator light fails to come on.
1. Neutral indicator light bulb and socket
• Check the neutral indicator light bulb and
socket for continuity.
Refer to "CHECKING THE BULBS AND
BULB SOCKETS"
• Are the neutral indicator light bulb and
socket OK?
SIGNALING SYSTEM
" or " ".
NO
The wiring circuit
from the turn signal
switch to the turn sig-
nal light connector is
faulty and must be
repaired.
8 - 37
YES
2. Neutral switch
• Check the neutral switch for continuity.
Refer to "CHECKING THE SWITCHES".
• Is the neutral switch OK?
YES
3. Voltage
• Connect the pocket tester (DC 20 V) to the
meter assembly coupler (wire harness
side) as shown.
Positive tester probe → brown 1
Negative tester probe → ground
• Set the main switch to "ON".
• Measure the voltage (DC 12 V) of brown at
the meter light bulb coupler (wire harness
side).
• Is the voltage within specification?
YES
This circuit is OK.
– +
ELEC
NO
Replace the neutral
indicator light bulb,
socket or both.
NO
Replace the neutral
switch.
NO
The wiring circuit
from the main switch
to the meter light bulb
coupler is faulty and
must be repaired.