Case IH 520438-06 - BCM – BCM: Field light memory 1 recall indicator fault

Fault code 520438-06 indicates a fault with the 'Field light memory 1 recall indicator'. The control module detects an abnormal voltage or lack of continuity (either an open circuit or a direct short to ground) on the indicator's circuit.

• MAGNUM AFS Connect
• Case IH Magnum AFS Connect 180
• Case IH Magnum AFS Connect 200
• Case IH Magnum AFS Connect 220
• Case IH Magnum AFS Connect 240
• Case IH Magnum AFS Connect 250
• Case IH Magnum AFS Connect 280
• Case IH Magnum AFS Connect 310
• Case IH Magnum AFS Connect 340
• Case IH Magnum AFS Connect 380
• Case IH Magnum AFS Connect 400
• Case IH Steiger AFS Connect

1. 1

   Verify the active fault code in the BCM using a diagnostic tool.

2. 2

   Inspect the wiring harness connecting the BCM to the Field light memory 1 recall indicator for any chafing, pinched wires, or exposed copper that could cause a short to ground or an open circuit.

3. 3

   Check the BCM connectors and the switch panel connectors for moisture, corrosion, or bent pins.

4. 4

   Verify the BCM software version and configuration to ensure the module is communicating correctly.

1. 1

   Turn off the ignition and disconnect the battery

   This prevents electrical damage.

2. 2

   Access the Body Control Module (BCM) and the field light memory switch/indicator panel

   These are located inside the cab.

3. 3

   Disconnect the harness

   Disconnect the harness at the switch and at the BCM.

4. 4

   Test the specific circuit wire

   Using a multimeter, test the specific circuit wire for continuity to ground (to check for a short) and end-to-end continuity (to check for an open circuit).

5. 5

   Repair or replace the harness

   If a short or break is found in the harness, repair the damaged section of the wire or replace the affected harness section.

6. 6

   Test the indicator/switch

   If the harness tests good, test the indicator/switch itself for an internal short or failure. Replace the switch assembly if it is faulty.

7. 7

   Reconnect components and clear codes

   Reconnect all components, restore battery power, and clear the fault codes from the BCM.

8. 8

   Test the field light memory function

   Ensure the code does not return.