Checking Of Connections - Yamaha YP250 Service Manual

YP806027
4. If the fuel gauge fails to operate.
1. Fuel sender
S Remove the fuel sender from the fuel tank.
S Disconnect the fuel sender coupler from the
wireharness.
Connect the pocket tester (
fuel sender coupler lead.
Tester (+) lead ! Green terminal
Tester (–) lead ! Black terminal
S Check the fuel sender for specificated resis-
tance.
Float position
UP
3
DOWN
4
2. Voltage
S Connect the pocket tester (DC20 V) to the
fuel gauge coupler.
Tester (+) lead !
Brown terminal
Tester (–) lead !
Frame ground
S Turn the main switch to "ON".
S Check for voltage (12 V) of the "Brown" lead
on the fuel sender lead.
10) to the
1
2
Specificated
resistance
4 X 10
90 X 100
BOTH MEET
SPECIFICATION
1
MEETS
SPECIFICATION
:
SIGNAL SYSTEM
OUT OF SPECIFICATION
Replace the fuel sender.
OUT OF SPECIFICATION
Check the connection of the entire signal
system.
Refer to "CHECKING OF CONNECTIONS".
Refer to "CIRCUIT DIAGRAM".
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ELEC