Case IH 19108 (DTC 613A) - ECU – Engine Control Module (ECM / EDC) or Denoxtronic Supply Module: DEF/AdBlue supply module pump motor short circuit to battery failure.

The system has detected a short circuit to the battery voltage in the power stage of the DEF/AdBlue supply module pump motor. This indicates that the circuit powering the pump motor is receiving battery voltage when it shouldn't be, which is typically caused by a wiring harness shorting to a power source or an internal short circuit within the pump motor itself.

• MAXXUM T4E
• 240 Series Axial-Flow Combines (7240, 8240, 9240)
• 130/140/150/160 Series Combines (5130, 6130, 7130, 5140, 6140, 7140, etc.)
• Magnum Tractors 180, 190, 200, 210, 225, 235, 240, 250, 260, 280, 290, 310, 340, 370, 380, 400
• Steiger Tractors 350, 370, 400, 420, 450, 470, 500, 540, 550, 580, 600, 620
• Puma Tractors 130, 140, 145, 150, 160, 165, 170, 185, 200, 215, 220, 240
• Maxxum Tractors 110, 115, 120, 125, 130, 135, 140, 145, 150
• Optum Tractors 270, 300
• Patriot 4430 Sprayer
• Titan 3030, 3530, 4030, 4530 Floaters
• Trident 5550
• Farmlift Telehandlers 632, 635, 735, 742, 935

1. 1

   Inspect the wiring harness between the ECM/Denoxtronic module and the DEF supply module for chafed, melted, or exposed wires shorting to a 12V/24V battery source.

2. 2

   Disconnect the DEF pump module and test the harness with a multimeter. If voltage is present on the control circuit while unplugged, the harness is at fault. If the voltage disappears, the short is internal to the DEF pump motor.

3. 3

   Ensure the DEF fluid is clean and free of contamination or crystallization, which can overwork the pump and lead to internal electrical failure.

1. 1

   Disconnect battery

   Disconnect the machine's battery to prevent further electrical damage.

2. 2

   Locate module

   Locate the DEF supply module (often mounted near the DEF tank).

3. 3

   Disconnect lines and connectors

   Disconnect the electrical connectors and the DEF fluid lines from the module.

4. 4

   Remove faulty module

   Unbolt the faulty module from its mounting bracket and remove it.

5. 5

   Install new module

   Install the new DEF supply module and secure it to the bracket.

6. 6

   Reconnect lines and connectors

   Reconnect the DEF fluid lines and electrical connectors.

7. 7

   Reconnect battery

   Reconnect the battery.

8. 8

   Program module

   The new Bosch Denoxtronic module must be programmed/calibrated to the vehicle's ECM using a dealer-level diagnostic tool (such as Jaltest, TEXA, or Case IH EST) after replacement.

9. 9

   Verify repair

   Clear the fault codes and run a system test or forced regeneration to verify the repair.