Yamaha YW50AP, Service Manual, Page: 199 / 214

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ELEC
SIGNAL SYSTEM
2. Voltage
8
Connect the pocket tester (DC20V) to the
fuel gauge coupler.
Tester (+) lead
→
Brown terminal
1
Tester (-) lead
→
Frame ground
8
Turn the main switch to “ON”.
8
Check for voltage (12V) of the “Brown”
lead on the fuel sender lead.
MEETS
SPECIFICATION
3. Fuel gauge
8
Connect the fuel sender to wireharness.
8
Move the float to “UP”
1
or “DOWN”
2
.
8
Turn the main switch to “ON”.
8
Check the fuel gauge needle moves “F”
or “E”.
Float position Needle moves
Float “UP”
1
“F”
Float “DOWN”
2
“E”
MOVES
This circuit is not faulty.
OUT OF SPECIFICATION
Check the connection of the entire signal sys-
tem .
Refer to “CHECKING OF CONNECTIONS”.
Refer to “CIRCUIT DIAGRAM”.
NOTE:
Before reading the meter, stay put the float
for more than three minutes respectively at
“UP” or “DOWN”.
DOES NOT MOVE
Replace the fuel gauge.
F
E
L Gy B
Br Dg
G Ch
1