Case IH 1206 – UCM (Universal Control Module): CAN Connection - Configuration Response Timeout

This fault code indicates a Controller Area Network (CAN) communication timeout regarding configuration responses. Specifically, it means there is a communication failure or an invalid memory parameter configuration between the Instrument Cluster (IC) and the Universal Control Module (UCM) / Vehicle Control Module (VCM).

• skid steer
• SR130
• SR150
• SR175
• SR200
• SR220
• SR250
• SV185
• SV250
• SV300
• TR270
• TR320
• TV380
• Steiger
• Puma
• Magnum
• Maxxum

1. 1

   Check for active battery voltage faults (e.g., Code 1014 - Over Voltage or Code 1015 - Under Voltage) using the Electronic Service Tool (EST) and fix base electrical issues first

2. 2

   Visually inspect the relevant harnesses and connectors between the Instrument Cluster and the UCM for damage, bent or dislocated pins, corroded terminals, or broken wires

3. 3

   Use the EST to verify that the configuration parameters in the UCM match the physical equipment and the Instrument Cluster's expected parameters

1. 1

   Power Down

   Turn off the machine, remove the key, and disconnect the battery to prevent electrical shorts during testing.

2. 2

   Inspect and Clean Connectors

   Locate the main connectors for both the Instrument Cluster (IC) and the Universal Control Module (UCM). Disconnect them and inspect for moisture, corrosion, or pushed-back pins. Clean the contacts with electrical contact cleaner and apply dielectric grease.

3. 3

   Test CAN Bus Continuity

   Using a multimeter, perform a continuity test on the CAN High and CAN Low wires between the IC and the UCM. Check for shorts to ground or shorts to power.

4. 4

   Repair Wiring

   If resistance is excessively high or a short is found, repair or replace the damaged section of the CAN bus wiring harness.

5. 5

   Re-seat and Clear Codes

   Reconnect all modules and the battery. Connect the Electronic Service Tool (EST) and clear the fault codes. Cycle the key to see if Code 1206 returns.

6. 6

   Software/Configuration Update

   If the wiring is intact but the code persists, the UCM and IC may have suffered a memory corruption. Use the EST to re-flash or update the software on the UCM and IC, ensuring their configurations are synchronized.

7. 7

   Module Replacement

   If the fault persists after wiring repairs and software reconfiguration, the UCM (or, less commonly, the IC) has an internal hardware failure and must be replaced and programmed via the EST.