Case IH 2718 (518375.03) - DEC – DEC: DUMP Solenoid - LSD short to high voltage

The low side driver circuit controlling the Dump Solenoid is experiencing a voltage that is above normal, meaning it is shorted to a high voltage source (typically 12V battery power).

• VESTRUM CVX
• Maxxum
• Steiger
• Puma
• Magnum

1. 1

   Disconnect the dump valve solenoid coil wiring connector. If the fault code changes to an 'open circuit' code, it indicates the short is likely within the solenoid coil itself.

2. 2

   If the code does not change, check the wiring harness between the DEC/ECM and the dump solenoid for any areas where the wire might be chafed and shorting to a 12-volt power source.

3. 3

   Inspect related shuttle handles or switches for looseness or shorted connections to mounting brackets, as these can sometimes feed improper voltage into the circuit.

1. 1

   Locate the dump solenoid

   Locate the dump solenoid on the transmission/hydraulic valve block.

2. 2

   Perform diagnostic disconnection test

   Perform the diagnostic disconnection test mentioned above.

3. 3

   Repair or replace wiring

   If the wiring harness is shorted to a high voltage source, locate the damaged section of the harness and repair or replace the wiring.

4. 4

   Replace dump solenoid coil

   If the solenoid coil is internally shorted to voltage, remove the retaining nut/bolt, slide the old solenoid coil off the valve stem, and replace it with a new dump solenoid coil.

5. 5

   Clear fault codes

   Clear the fault codes and verify operation.