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SOIL | Looks like you've already covered most of this, but here's from a PDF I found a while back.
This is for a CNH branded NAV and display, but I believe most of the fundamentals are the same.
Autopilot system fault code 108 "CAN Sensor OPS Message
Timeout"
Cause
This fault occurs when the CAN Auto-guidance message is not received within the
specified interval. It happens only if the Autopilot system is connected to a Case
Accu-Guide or New Holland Intelli Steer Ready vehicles.
The fault can be caused by one of the following:
• Faulty seat switch
• Incorrect vehicle profile
• CAN system failure
Solution
1. Clear the fault code:
a. On the display, check the fault detail.
b. Record the fault code and then select OK.
2. Check the integrity of the cable harness (termination/noise).
3. Remove any recently added CAN bus ECUs (implements).
4. If the fault is still not resolved, contact Trimble Support
Faulty seat switch
Use the Autopilot Toolbox software to make sure that the Autopilot system recognizes
the seat switch:
1. Click Edit Setup / Diagnostics.
2. In the Diagnostics tab, click Operator Present Switch.
3. Make sure that the State changes to Active when you sit down and then changes
again when you stand up.
AgGPS Autopilot Automated Steering System Troubleshooting Guide 89
AgGPS Autopilot System Fault Codes 2
4. Do one of the following:
• If the State does not change, the seat switch may be defective. Call a tractor
technician to verify the operation with the service tool and to replace the switch, if
required.
• If the State changes and the fault continues, you may need to reload the vehicle
profile as described below.
Incorrect vehicle profile
Use Autopilot Toolbox software or the FieldManagerTM display to see which vehicle is
selected. The vehicle name or profile name will be followed by "AG" ( for Accu-Guide),
or "IS" ( for Intelli-Steer Ready). If required, reload or select the correct vehicle profile.
CAN system failure
• Check the integrity of the cable harness going to the seat switch. Inspect for cut or
pinched wires. Inspect the connector for damage to the pins. Make sure that the
pins are fully seated in the connector.
• Make sure that the CAN harness is correctly terminated.
• Make sure that the CAN jumper is correctly installed. Applies only to Steiger or TJ
models.
• Remove any recently added CAN bus ECUs, specifically for implements.
• If you cannot see any defects, call a tractor technician to inspect the vehicle and to
verify correct CAN system operation. | |
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Trimble Autopilot Fault 108
