Yamaha T135SE Service Manual page 330

3. Voltage
9 Connect the pocket tester (DC 20 V) to the
meter assembly coupler (wire harness side)
as shown.
Neutral indicator light
→→
Positive tester probe
Negative tester probe
1st gear position indicator light
→→
Positive tester probe
Negative tester probe
2nd gear position indicator light
→→
Positive tester probe
Negative tester probe
3rd gear position indicator light
→→
Positive tester probe
Negative tester probe
4th gear position indicator light
→→
Positive tester probe
Negative tester probe
9 Set the main switch to "ON".
9 Shift the transmission into each gear.
9 Measure the voltage (DC 12 V) of the sky
blue 1 , white 2 , pink 3 , yellow/white 4 , or
blue/white 5
lead terminal at the meter
assembly coupler (wire harness side).
9 Is the voltage within specification?
YES
This circuit is OK.
SIGNALING SYSTEM
11
sky blue
→→
ground
22
white
→→
ground
33
pink
→→
ground
44
yellow/white
→→
ground
55
blue/white
→→
ground
Br L L Br
Dg Dg
Ch Ch
G B B G
1
Sb Y/W Y/W Sb
W G/WG /W
W
2
P L/W L/W P
5 3
4
NO
The wiring circuit
from the main
switch to the meter
assembly coupler
is faulty and must
be repaired.
8-38
http://www.motorcycle.in.th
EAS00804
5. The fuel level gauge fails to operate.
1. Fuel sender
9 Remove the fuel sender from the fuel tank.
9 Connect the pocket tester to the fuel sender
coupler (fuel sender side) as shown.
→→
Positive tester probe
Negative tester probe
9 Measure the fuel sender resistances.
Fuel sender resistance
åå
(up position
⋅⋅
( Ω
1)
4–10 Ω at 20° C (68° F)
Fuel sender resistance
(down position
⋅⋅
( Ω
10)
90–100 Ω at 20° C (68° F)
9 Is the fuel sender OK?
YES
ELEC
11
green
→→
22
black
12
BG
å
∫
)
∫∫
)
NO
Replace the fuel
sender.