John Deere E13 – VCM: HARVESTSMART Vehicle Fault

The E13 fault code is a general indicator logged by the Vehicle Control Module (VCM) for the HARVESTSMART feed rate control system. This system automatically adjusts the combine's ground speed based on crop conditions and engine load. The fault can be triggered by multifunction control handle errors (sensor voltage out of range or mismatched signals), solenoid circuit faults (shorted or open circuits in the forward/reverse hydrostatic pump solenoids), swash plate position sensor errors, or internal controller faults. A more specific Diagnostic Trouble Code (DTC) with an SPN and FMI is required to pinpoint the exact component failure.

• 9560 STS
• 9660 STS
• 9760 STS
• 9860 STS
• 9570 STS
• 9670 STS
• 9770 STS
• 9870 STS
• C670
• T550
• T560
• T660
• T670
• W540
• W550
• W650
• W660

1. 1

   Retrieve all active and stored codes from all control units (A00, C00, E13, E14) using the diagnostic display.

2. 2

   Diagnose and address other control unit DTCs first, especially those from the E14 (SFC) and A00 (Engine Control Unit), as they can cause related faults in the E13 VCM.

3. 3

   Clear diagnostic trouble codes and operate the machine to see which codes reappear, ruling out intermittent or previously resolved issues.

4. 4

   Visually inspect the wiring harnesses and connectors associated with the multifunction control handle, hydrostatic pump solenoids, and VCM for any signs of damage, corrosion, or loose connections.

5. 5

   Perform calibrations (e.g., Smart Feed Rate Handle, Smart Feed Rate Valve, or Header and Deck Plate Calibration), as many issues related to position sensors can be resolved by recalibration.

1. 1

   Isolate the faulty component

   Using the specific DTC (SPN/FMI), identify the malfunctioning component (e.g., multifunction handle position sensor, forward hydro solenoid, or the VCM itself).

2. 2

   Replace faulty sensors (Multifunction Handle, Swash Plate, or Wheel Speed)

   If a multifunction control handle error or swash plate position sensor error is identified, disconnect the electrical connector, remove the mounting hardware, replace the sensor, and re-secure it. For a wheel speed sensor, install it until it contacts the tone ring, then back it out a specific distance (e.g., 1/2 to 1 full turn) to set the air gap before tightening.

3. 3

   Replace faulty solenoids

   If a solenoid circuit fault is identified, shut down the engine and relieve hydraulic pressure. Disconnect the electrical connector, carefully unscrew the solenoid from the valve body, ensure the sealing O-rings are in good condition or replaced, install the new solenoid, and torque to specification.

4. 4

   Replace the VCM

   If internal controller faults persist (e.g., high internal temperature, failed EEPROM tests) after clearing codes, disconnect the battery, disconnect the large electrical connectors from the E13 VCM, unbolt the module, install the new one, and reconnect the harnesses and battery.

5. 5

   Perform post-replacement calibration

   After replacing any component, perform the relevant calibration procedure as prompted by the service manual (e.g., Smart Feed Rate Handle Calibration, Smart Feed Rate Valve Calibration, or Header and Deck Plate Calibration). Failure to calibrate will likely result in continued fault codes and improper system operation.