TUBE AS 3356437 - Caterpillar

Resistive Fuel Level Sender
Illustration 1 g01622737
Schematic for the fuel level sender
This diagnostic code is recorded when the Advisor module reads the signal range of the sender as being too high or too low. The gauge will indicate an abnormally low fuel level.Note: After the tank has been filled, the sender may take several minutes in order to respond.Note: Ensure that the metal face of the float is pointing toward the sender. Check the clearance between the float and the tube. The clearance should be 2 to 3 mm (0.079 inch). The float should be able to move freely.Test Step 1. CHECK THE POWER OF THE SENDER.
At the connector for the sender, identify the "+24V" circuit and the "Ground" circuit.
Use the 7X-1710 Multimeter Cable in order to check the system voltage for the sender. Measure the voltage from contact 1 to contact 2 (ground).Expected Result:The voltage that is measured is between 21.3 and 32 DCV.Results:
YES - The voltage is between 21.3 and 32 DCV. System voltage is present. Proceed to test step 2.
NO - The voltage is not between 21.3 and 32 DCV. There is an open circuit. Trace the "+24 DCV" and the "Ground" circuits in the machine harness.Repair: Repair the machine harness or