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Fuel Gauge Sender|Adjustments > < Fuel Level Sensor, Fault Tracing
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Fuel Gauge Sender: Testing and Inspection
Auxiliary Tank Sensor Fault Tracing

Fuel lever sensor auxiliary tank, fault tracing ............................................................................................................................................................  T17
1982-1985
 

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Remove battery negative lead.

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Unplug connector and measure with an ohmmeter between the white-gray leads. 
Resistance should be between 1 ohm, with auxiliary tank empty, and 18 ohm, with auxiliary tank full. 
If resistance reads infinity, measure directly on the sensor terminals.
With resistance other than between 1 and 18 ohm, the sensor is faulty and needs changing.

Fuel lever sensor auxiliary tank, fault tracing ............................................................................................................................................................  T18
1986-
 

-

Remove battery negative lead.

-

Unplug connector and measure with an ohmmeter between the white-gray leads. 
Resistance should be between 0 ohm, with auxiliary tank empty, and 60 ohm, with auxiliary tank full. 
If resistance reads infinity, measure directly on the sensor terminals.
With resistance other than between 0 and 60 ohm, the sensor is faulty and needs changing.

Fuel Gauge Sender|Adjustments > < Fuel Level Sensor, Fault Tracing