Case IH 3345 – Engine Control Unit (Engine ECU / EDC - Electronic Diesel Control): Total Throttle Failure (Only applies to Dual Throttle Vehicles)

Complete loss of valid throttle input signals on tractors equipped with a dual throttle system. The system logs this code when the control module receives a failure value from the CAN data bus indicating that the throttle position sensors are no longer providing readable or correlating data.

• Case IH Magnum Series: 235 - 340 (Series 4)
• Case IH Steiger Series
• Case IH Puma, Maxxum, and Vestrum CVXDrive Series
• Case IH Farmall U Pro

1. 1

   Inspect CAN bus and wiring harness connecting the foot throttle pedal and hand throttle to the Engine ECU for chafed wires, open circuits, or shorts.

2. 2

   Inspect electrical connectors at the Throttle Position Sensors (TPS) for moisture, corrosion, or backed-out pins.

3. 3

   Perform a sensor sweep test using a multimeter or Case IH EST to monitor voltage/percentage for dead spots, erratic spikes, or lack of signal.

4. 4

   Verify module communication between the armrest controller and the Engine ECU over the CAN network.

1. 1

   Power Down

   Turn off the ignition and disconnect the negative battery cable to prevent electrical spikes.

2. 2

   Access the Component

   Remove the lower dash panels to access the foot throttle pedal assembly, or open the Multicontroller armrest console to access the hand throttle sensor.

3. 3

   Disconnect

   Unplug the wiring harness connector from the faulty Throttle Position Sensor (TPS) or pedal assembly.

4. 4

   Removal

   Remove the retaining bolts securing the throttle assembly or sensor to its mounting bracket and remove the faulty unit.

5. 5

   Installation

   Mount the new TPS or throttle pedal assembly and tighten the retaining hardware to OEM torque specs.

6. 6

   Reconnect

   Plug the electrical connector back in, ensuring the locking tab clicks into place. Reconnect the battery.

7. 7

   Calibration

   Connect the Case IH EST diagnostic tool. Clear the inactive 3345 fault code and perform a Throttle Calibration Procedure.