TROUBLESHOOTING AND ELECTRICAL SYSTEM:
GASOLINE VEHICLES
Test Procedures
11
2100
Figure 11-27
Fuel Level Sending Unit Test
4.
The following resistance readings (in ohms) should be indicated, depending on the position of the float inside
the fuel tank. The resistance reading will vary according to the exact position of the float. The following table
may be used as a guideline to determine if the fuel level sending unit is operating correctly. Make sure the float
is at the surface of the fuel in the tank.
FLOAT POSITION
RESISTANCE READING
FUEL GAUGE READINGS
Lower position (tank empty)
240 ± 20 ohms
Empty
Center position (tank half full)
120 ± 20 ohms
Half full
Upper position (tank full)
60 ± 20 ohms
Full
5.
If the readings are within the specifications listed in the preceding table, the fuel level sending unit is working
properly. If the readings are incorrect, the fuel level sending unit has failed and the fuel tank must be replaced.
See Fuel Tank Removal on page 15-15.
6.
If the readings are correct and the fuel gauge does not function correctly, leave the battery disconnected and
check the continuity of the following:
– Orange wire (w104) from the fuel level sending unit to the fuel gauge/hour meter.
– Blue wire (w25) and purple wire (w47) from the fuel gauge/hour meter to the key switch.
– Black ground wires at the fuel level sending unit (w106) and at the fuel gauge/hour meter (w22).
Gauge/Hour Meter Removal on page 13-7.
7.
If the readings are correct according to the position of the float, but the reading on the fuel gauge/hour meter is
incorrect, test the fuel gauge/hour meter.
See Test Procedure 31 – Fuel Gauge on page 11-34.
2008-2012 All-Wheel Drive Maintenance and Service Manual
Page 11-33
Summary of Contents for Carryall 295 SE
Page 2: ......
Page 20: ......
Page 28: ......
Page 58: ......
Page 66: ......
Page 100: ......
Page 122: ......
Page 150: ......
Page 157: ......
Page 190: ......
Page 197: ......
Page 236: ......
Page 284: ......
Page 386: ......
Page 394: ......
Page 442: ......
Page 452: ......
Page 454: ......
Page 455: ......
Page 456: ......