Case IH F-GNSS-103 - Display – Processing and Connectivity Module (PCM): GNSS Accuracy Low

The estimated accuracy of the best position is below the setting for primary correction. This means the GPS/GNSS receiver is not receiving a strong enough signal or the required correction data to maintain the accuracy level set in the system.

• MAGNUM AFS Connect
• STEIGER AFS Connect
• Patriot® 50 Series Sprayers
• AFS Connect™ Steiger® Tractors
• AFS Connect™ Magnum™ Tractors
• Legacy Case IH machines retrofitted with the Case IH Pro 1200 Guidance Kit

1. 1

   Check for environmental interference from tall buildings, dense tree lines, or other signal blockages

2. 2

   Verify that required correction signal subscriptions (e.g., RTK, CenterPoint RTX, RangePoint RTX, or WAAS) are active and not expired

3. 3

   Inspect data cables and physical connections between the external GNSS receiver and the display/PCM

1. 1

   Relocate the Machine

   Move the vehicle to an area with a clear view of the sky, away from buildings or trees, to allow the receiver to re-acquire satellites.

2. 2

   Secure Connections

   If the signal does not return in a clear area, check the wiring harness. Connect any data cables from external devices (GNSS receivers) to their respective ports on the display and ensure all connections are secure to prevent signal loss.

3. 3

   Harness Routing

   Ensure the wiring harnesses from the display to the receiver and controllers are routed safely. Use zip ties to secure loose wires and prevent them from interfering with vehicle operation or getting pinched.

4. 4

   Final Check

   Inspect all connections for tightness and reboot the Pro 1200 display to see if the GNSS accuracy returns to the required threshold.