1. Disconnect the fuel pump module connector.
2. Connect the red lead of a J 33431-B to the fuel pump module connector, cavity A and connect the other lead to ground.
3. Turn the ignition switch to the RUN position.
4. Adjust the tester to 0 ohms and slowly turn the resistance to 90 ohms.

Did the instrument cluster fuel gauge indicate EMPTY and then move to indicate FULL?

0 ohms-90 ohms

Go to Step 2

Go to Step 3

Replace the fuel pump module. Refer to Fuel Sender Assembly Replacement in Engine Controls.

Is the repair complete?

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System OK

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1. Disconnect the J 33431-C signal generator.
2. Disconnect the instrument cluster connecter.
3. Use a J 39200 DMM to measure the resistance between the instrument cluster connector, cavity 16 and the fuel pump module connector, cavity A.

Is the resistance greater than the specified value?

5 ohms

Go to Step 4

Go to Step 5

Locate and repair the high resistance in CKT 30 (PPL) between the instrument cluster connector, cavity 16 and the fuel pump module connector, cavity A.

Is the repair complete?

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System OK

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Replace the instrument cluster.

Is the repair complete?

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System OK

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