Fuel Gauge: Testing and Inspection

1. Disconnect connector from sender gauge.
2. Turn ignition switch to On position, then check receiver gauge needle indicates Empty.

Fig. 35 Fuel Receiver Gauge Inspection.:

3. Connect terminals 2 and 3 on wire harness side connector through a 3.4W test bulb, Fig. 35.
4. Turn ignition switch On, then ensure bulb lights and receiver gauge needle moves toward full side.

Fig. 36 Fuel Gauge Terminal Locations.:

5. Measure resistance between terminals A, B and C, Fig. 36. Resistance should be as follows:
a. A-B: about 126.0 ohms.
b. A-C: about 281.0 ohms.
c. B-C: about 154.0 ohms.
d. If resistance is not as specified, replace receiver gauge.
6. Connect a series of three 1.5 volt dry cell batteries.

Fig. 38 Fuel Sender Gauge Inspection.:

7. Connect the positive lead from the dry cell batteries to terminal 2 through a 3.4W test bulb and the negative lead to terminal 3, Fig. 38.
8. Ensure voltage rises between terminals 2 and 3 as the float is moved from top to bottom position.
9. Measure resistance between terminals 2 and 3 for each float position. Resistance should be as follows:
a. Full position: about 3.0 ohms.
b. Empty position: about 110.0 ohms.
c. If resistance is not as specified, replace sender gauge.