CHASSIS ELECTRICAL ± Combination Meters
54A-25
FUEL GAUGE UNIT CHECK
Remove the fuel gauge unit from the fuel tank.
(Refer to GROUP 13C.)
FUEL GAUGE UNIT RESISTANCE
1. Check that resistance value between the fuel gauge
terminal and earth terminal is at standard value when
fuel gauge unit float is at point F (highest) and point E
(lowest).
Standard value:
Items Standard value Ω
Main
Float point F 1 ±3
Float point E 49.7 ± 51.7
Sub
Float point F 1 ± 3
Float point E 55.3 ± 57.3
2. Check that resistance value changes smoothly when float
moves slowly between point F (highest) and point E
(lowest).
FUEL GAUGE UNIT FLOAT HEIGHT
1. Move float and measure the height A at point F (highest)
and B at point E (lowest) with float arm touching stopper.
Standard value:
Items Standard value mm
Main
Float point F 44.5 ± 52.5
Float point E 220.3 ± 228.3
Sub
Float point F 30.4 ± 36.4
Float point E 238.5 ± 244.5
2. Check that resistance value changes smoothly when float
moves slowly between point F (highest) and point E
(lowest).
FUEL LEVEL SENSOR (THERMISTOR)
1. Connect the battery to the main fuel gauge unit connector
via test lamp (12 V ± 3.4 W) as shown in the illustration.
<Main> <Sub>
Point F (highest)
Point E (lowest)
Point F
(highest)
Point E (lowest)
A
B
Thermistor
Earth
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