John Deere 523671.13 – AIC: AIC Calibration Fault/Not Calibrated

The calibration for the shift lever (Right-Hand Reverser) is outside the maximum allowable range, or a previously failed calibration attempt was saved to the system. Because the Armrest Interface Control Unit (AIC) cannot accurately determine the shift lever's position, the tractor will experience limited or no transmission function and will automatically command the transmission into PARK for safety.

• 8225R
• 8245R
• 8270R
• 8295R
• 8320R
• 8335R
• 8345R
• 8370R
• 8400R
• 9470RT
• 9520RT
• 9570RT
• 6090MC
• 6100MC
• 6110MC
• 6090RC
• 6100RC
• 6110RC

1. 1

   Check the shift lever / right-hand reverser for physical damage, debris, or sticking that might prevent it from moving through its full range of motion.

2. 2

   Look for other active AIC codes (such as CAN Bus voltage codes or switch circuit faults) that might indicate a wiring harness issue rather than a failed sensor.

3. 3

   Access the CommandCenter diagnostic addresses (e.g., AIC 010 for Right Hand Reverser Inputs Status, AIC 011/012 for Drive Lever Channel Voltages) to see if the AIC is receiving any voltage sweeps when the lever is moved.

1. 1

   Attempt Recalibration

   Since the code explicitly states the lever is not calibrated or a failed calibration was saved, your first step is to recalibrate the shift lever.

2. 2

   Access Calibration Menu

   Turn the key ON (engine off). Using the CommandCenter display, navigate to the tractor's calibration menu and select the Armrest Interface Control Unit (AIC).

3. 3

   Run Reverser Calibration

   Select the calibration for the Right-Hand Reverser / Shift Lever. Follow the on-screen prompts, which will require you to move the lever through its full range of motion (Forward, Neutral, Reverse, Park) to teach the AIC the minimum and maximum voltage values.

4. 4

   Verify Repair

   Cycle the key switch to save the calibration. Restart the tractor and verify if the code clears and transmission function is restored.

5. 5

   Inspect Wiring

   If the calibration fails immediately, remove the armrest covers and inspect the wiring harness and connector going to the reverser control for pinched wires or loose pins.

6. 6

   Replace Component

   If the wiring is intact but the lever will not take a calibration (sensor values are out of range), the internal sensors of the shift lever assembly have failed. Replace the Right-Hand Reverser control assembly and repeat the calibration process.