Fuel Gauge Meter; Fuel Gauge Meter Resistance Test; Fuel Gauge Meter Input Voltage Test - TGB EST 1000 Service Manual

FUEL GAUGE METER

The fuel gauge meter is a float actuated
variable resistance type that is part of the fuel
pump.

Fuel Gauge Meter Resistance Test

1. Disconnect the fuel pump connector.
2. Use multimeter measure the resistance of the
gauge meter..
Pin 1 and Pin 2 =.
1100 Ω+/- 10
Full =
Empty =100Ω +/- 5
▪ If reading are out of specification, repeat test
at fuel pump connector. If resistance at fuel
pump connector is not good, replace fuel
gauge meter.
▪ If readings are specified, carry out a FUEL
GAUGE METER INPUT voltage test.

Fuel Gauge Meter Input Voltage Test

1. Set ignition switch to ON.
2. Disconnect fuel pump connector.
3. Use a multimeter and measure the input
voltage:
Pin 2 and Battery (-) = Battery Voltage
▪ If battery voltage is not read, test wiring
continuity between gauge meter and
speedometer.
▪ If wiring continuity is good, replace
speedometer.
▪ If continuity is not obtained, repair or replace
wiring.
4-1. FUEL SYSTEM
①
②
Float(-)
1
2
Float(+)
Pin 1：Black/White
Pin 2：Green/White
4-1-9