Case IH 19329 – Engine Control Unit (ECU/EDC) or Cab Control Module (CCM): CAN-Receive-Frame Transmission Control 2 (ETC2)

A CAN bus communication timeout error indicating that the receiving module has stopped receiving the expected ETC2 (Electronic Transmission Controller 2) data message from the Transmission Control Unit (TCU) over the CAN bus.

• Tier 4b
• Magnum Series (235, 250, 310, 340)
• Steiger / Quadtrac Series
• Puma Series
• Maxxum Series
• Farmall Series (115U)

1. 1

   Verify battery voltage is stable, as low or spiking voltage can cause modules to temporarily drop off the CAN bus

2. 2

   Check the fuses, relays, and ground straps supplying power to the Transmission Control Unit (TCU)

3. 3

   With battery disconnected, measure resistance between CAN High and CAN Low pins at the diagnostic port (should be exactly 60 ohms; 120 ohms indicates a failed resistor or open circuit, 0 ohms indicates a short)

4. 4

   Visually inspect the wiring harness running between the transmission and the cab/engine for chafing, pinch points, or rodent damage

1. 1

   Disconnect Power

   Disconnect the negative battery cable before servicing the CAN bus or unplugging modules.

2. 2

   Inspect and Clean Connectors

   Locate the connectors at the Transmission Control Unit and the Engine/Cab controllers. Unplug them and inspect for moisture, green corrosion, or backed-out pins. Clean with electrical contact cleaner and apply dielectric grease before reconnecting.

3. 3

   Repair Harness / Resistors

   If the resistance test failed, trace the CAN backbone to locate the break or the faulty terminating resistor. Replace the damaged wire section or plug in a new terminating resistor.

4. 4

   Clear Codes

   Reconnect the battery. Use the Case IH Electronic Service Tool (EST) to clear the inactive fault codes from the ECU and CCM.

5. 5

   Test Operation

   Start the tractor and operate the transmission through its ranges. If code 19329 returns immediately and all wiring, power, and grounds to the TCU have been verified as good, the Transmission Control Unit itself has likely suffered an internal failure and will require replacement and reprogramming by a dealer.