John Deere 003509.04 – AIC: AIC 5 V Sensor Supply 1 Voltage Low

The Armrest Interface Control (AIC) module has detected a low voltage condition on its 5-volt sensor supply circuit 1. This circuit provides power to various sensors connected to the armrest controls. When the voltage drops below the specified threshold, this fault is logged, which may affect the operation of the control module and cause malfunctions in components relying on these sensors.

• 9470RT
• 9520RT
• 9570RT
• S680
• 7760
• 9370R

1. 1

   Review Operator Corrective Actions on the CommandCenter display and cycle tractor power

2. 2

   Check for other active fault codes using a diagnostic scanner to pinpoint widespread electrical issues

3. 3

   Inspect battery and charging system, ensuring a fully charged battery, clean terminals, and undamaged alternator and cables

4. 4

   Inspect wiring harnesses connected to the armrest and attached implements (especially headers) for pinched, chafed, or frayed wires

5. 5

   Check and clean all ground connections related to the cab and armrest controls

6. 6

   Disconnect and inspect electrical connectors for the AIC module and sensors for corrosion, bent pins, or loose connections, then reseat them

1. 1

   Isolate the faulty sensor

   Unplug each sensor on the 'AIC 5 V Sensor Supply 1' circuit one at a time. Cycle the key after each to check if the fault clears. If it clears, the unplugged sensor is internally shorted and must be replaced.

2. 2

   Test the wiring harness

   With all sensors and the AIC module disconnected, use a multimeter to check for continuity to ground on the 5-volt supply wire. If continuity exists, trace the harness to locate and repair the short to ground.

3. 3

   Test the AIC module

   If the wiring harness and all sensors test good, the AIC module may be faulty. Have a dealer perform a diagnostic check with specialized tools to confirm module failure before replacement.

4. 4

   Replace faulty components

   Replace any identified faulty sensor, damaged wiring harness, or confirmed faulty AIC module with appropriate OEM parts.