New Holland NH 3098 – Engine Control Module (ECM / EDC): CAN TSC1_TE Control - SOURCE LOW / Timeout of CAN Message TSC1-TE (When Active)

A J1939 CAN bus communication error indicating that the engine controller has stopped receiving the required torque/speed command messages from the vehicle/transmission controller over the CAN bus, or that the CAN circuit voltage has dropped unexpectedly (Source Low).

• New Holland T-Series (T5000, T6000, T7, T8.xxx series)
• New Holland TL, TLA, TS, and TSA series

1. 1

   Check for related codes: 3099 (NO SIGNAL), 3096 (ECM Bus Off on Vehicle CAN), or 3097 (ECM Bus Off on Engine private CAN) to determine if it is a true hardware failure.

2. 2

   Inspect the CAN High and CAN Low wiring between the Engine ECU and the VCM/XCM for shorts to ground.

3. 3

   Check terminating resistors across the CAN bus with the battery disconnected (should read approximately 60 ohms).

4. 4

   Verify the VCM/XCM is receiving proper battery voltage and has a clean ground to ensure it is not dropping offline.

1. 1

   Power Down

   Turn off the machine and disconnect the battery to prevent electrical spikes.

2. 2

   Locate Modules

   Locate the Engine ECU (usually mounted on or near the engine block) and the Vehicle Control Module (VCM/XCM, usually located in the cab or under the side console).

3. 3

   Inspect Connectors

   Disconnect the main harness connectors at both modules. Inspect the pins for fretting, corrosion, moisture ingress, or pushed-back terminals. Clean with electronic contact cleaner if necessary.

4. 4

   Test Wiring Continuity

   Using a multimeter, perform a continuity test on the CAN wires between the ECU and VCM. Test for continuity end-to-end, and test for shorts to ground or shorts to power.

5. 5

   Repair Harness

   If a short to ground is found (aligning with the "SOURCE LOW" description), locate the chafed wire in the harness and repair it using proper soldering and heat-shrink techniques, or replace the affected harness section.

6. 6

   Reassemble and Clear Codes

   Reconnect all modules, reconnect the battery, and use the New Holland Electronic Service Tool (EST) to clear the inactive fault codes.

7. 7

   Test Operation

   Start the tractor and operate it under load to verify that the TSC1-TE CAN messages are successfully being transmitted and the code does not return.