Yamaha T135SE Service Manual page 331

2. Voltage
9Connect the pocket tester (DC 20 V) to the
meter assembly coupler (wire harness side)
as shown.
Positive tester probe → → brown 1 1
Negative tester probe → → ground
9Set the main switch to "ON".
9Measure the voltage (DC 12 V) of brown
lead terminal 1 on the meter assembly cou-
pler (wire harness side).
9Is the voltage within specification?
YES
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Yamaha T135 Service Manual
1
Br L L Br
Ch Dg Dg Ch
G B B G
NO
Check the wiring
connections of the
entire signaling sys-
tem
SIGNALING SYSTEM
3. Fuel level gauge
9Set the main switch to "ON".
9Move the float up 1 or down 2.
9Check that the fuel level gauge needle
moves to "F" or "E".
NOTE:
Before reading the fuel level gauge, leave the
float in one position (either up or down) for at
least three minutes.
1
9Does the fuel level gauge needle move
appropriately?
YES
4. Wiring
Check the entire signaling system's wiring.
8-39
ELEC
2
NO
Replace the fuel
level gauge.