New Holland 9130 – AIC: CAN Timed Out During Operation

The system has detected a CAN communication timeout during operation, indicating a loss of communication between the Advanced Information Center (AIC) controller and other components in the network. This occurs when a specific controller does not receive an expected message from another controller on the CAN bus within a predefined time. Depending on the affected controllers, this fault can cause symptoms ranging from minor glitches to complete system shutdowns.

• W270B Wheel Loader
• T-series Tractors
• Boomer Tractors
• CR Combines

1. 1

   Check the battery and charging system, as a weak battery or poor charging is a common cause of intermittent communication faults

2. 2

   Visually inspect the entire CAN bus wiring harness for chafing, cuts, or corrosion

3. 3

   Check all CAN bus connectors for loose pins, corrosion, or moisture intrusion, and ensure they are securely seated

4. 4

   With ignition OFF, measure CAN bus resistance between CAN High and CAN Low at a diagnostic connector (expected: ~60 Ohms; 120 Ohms indicates a missing resistor/open circuit; <60 Ohms indicates a short/faulty controller; infinite indicates a break)

5. 5

   With ignition ON and engine OFF, measure CAN High voltage to ground (expected: 2.5 to 3.0 volts) and CAN Low voltage to ground (expected: 2.0 to 2.5 volts). Deviations from these voltage ranges can indicate a faulty controller, a short to power, or a short to ground on the network.

1. 1

   Address power supply issues

   If the battery is weak or the charging system is faulty, rectify these issues first. Clear the fault codes and operate the machine to see if the code returns.

2. 2

   Repair wiring and connectors

   If any damage, corrosion, or loose connections were found during the visual inspection, repair or replace the affected sections of the harness or connectors. Ensure all connections are clean and secure.

3. 3

   Isolate the faulty component

   If resistance and voltage checks indicate a problem with a terminating resistor or controller, use the 'split-half' method. Disconnect modules one by one to see if the correct 60-Ohm resistance is restored to the rest of the network to pinpoint the faulty component.

4. 4

   Replace faulty components

   Replace the identified faulty terminating resistor or specific controller (such as the ECM or AIC). In some cases, a software update pushed by a dealer may resolve the controller issue.

5. 5

   Clear codes and verify repair

   After replacing any components, clear all fault codes using a diagnostic tool or through the machine's display. Operate the machine to ensure that fault code 9130 does not reappear.