Case IH 19373 – Engine Control Module (ECM) / Vehicle Control Module (VCM): Timeout CAN-Receive-Frame Adaptive Cruise Control (ACC1)

A network communication failure on the tractor's Controller Area Network (CAN) bus where the main control system is not receiving the expected data frames from the Adaptive Cruise Control (ACC1) radar module within the required timeframe.

• Tier 4b
• Puma
• Optum
• Magnum
• Steiger

1. 1

   Visually inspect the CAN bus wiring harness connecting the ACC radar module to the main vehicle network for disconnected, broken, or chafed cables.

2. 2

   Test the ACC wiring harness for short circuits and verify the radar module is receiving proper power and ground.

3. 3

   Perform a CAN network test by checking the CAN High and CAN Low lines for proper resistance (typically 60 ohms across the network when powered off).

4. 4

   Use a diagnostic scanner (Case IH EST or Jaltest) to verify the CAN configuration in the RADAR system is programmed correctly.

1. 1

   Isolate the Module

   Locate the Adaptive Cruise Control (ACC) radar module at the front of the machine.

2. 2

   Inspect Connectors

   Disconnect the wiring harness from the radar module. Inspect the pins for moisture intrusion, corrosion, or bent terminals (a common cause of "No Communication" faults). Clean and apply dielectric grease if necessary.

3. 3

   Repair Wiring

   If continuity tests reveal a broken wire or a short to ground/power in the CAN lines between the ECM/VCM and the ACC module, repair or replace the damaged section of the wiring harness.

4. 4

   Replace the Radar Module

   If the wiring, power, and ground are all intact but the timeout error persists, the internal CAN controller of the ACC radar module is defective. Remove the mounting hardware and replace the radar sensor.

5. 5

   Recalibrate

   Install the new radar module. Connect a dealer-level diagnostic tool to flash the correct CAN configuration to the new module, clear the 19373 fault code, and perform any required radar alignment/calibration procedures.