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.
3. Connect terminals 2 and 3 on wire harness side connector through a 3.4W test bulb, Fig. 1.

Fig. 1 Fuel Receiver Gauge Inspection.:

4. Turn ignition switch On, then ensure bulb lights and receiver gauge needle moves toward full side.

Fig. 2 Fuel Gauge Terminal Locations.:

5. Measure resistance between terminals A, B and C, Fig. 2. Resistance should be as follows:
a. A-B: about 151.0 ohms.
b. A-C: about 306.0 ohms.
c. B-C: about 154.0 ohms.
d. If resistance is not as specified, replace receiver gauge.
6. Measure resistance between terminal 2 and 3 for each float position, Fig. 3.

Fig. 3 Fuel Sender Gauge Inspection.:

7. Ensure voltage rises between terminals 2 and 3 as the float is moved from top to bottom position.
8. Measure resistance between terminals 2 and 3 for each float position. Resistance should be as follows:
a. Full position: about 3.0 ohms.
b. Half position: about 0.0.8 ohms.
c. Empty position: about 110.0 ohms.
d. If resistance is not as specified, replace sender gauge.