Case IH 3235 – Engine Control Module (ECM): Number of Injections Limited - by Charge Balance

This code triggers when the number of fuel injections requested by the system is greater than the maximum allowed injections for the current battery voltage and engine speed. To prevent excessive electrical draw and maintain the system's charge balance, the engine controller artificially limits the number of injections.

• skid steer
• Case IH Magnum 235 – 340 (Series 4)
• Case IH Steiger series
• Case IH Puma series

1. 1

   Check the resting and running voltage of the battery

2. 2

   Verify that the alternator is outputting the correct voltage to keep up with the electrical demands of the fuel injection system

3. 3

   Check the current software version on the ECM using the Electronic Service Tool (EST)

1. 1

   Test and Replace Battery

   Perform a load test on the tractor's battery. If the battery voltage drops too low during operation, replace the battery.

2. 2

   Clear and Verify

   Clear the Diagnostic Trouble Code (DTC) using the EST diagnostic tool. Activate the ignition for one complete driving cycle (Ignition OFF, then ON, then start the engine) to see if the code returns.

3. 3

   Re-flash the ECM

   If the battery and charging system are healthy but the code persists, connect the EST and re-flash the Engine Control Module with the latest software calibration. The fault will often correct itself once the software recalculates the allowable injections for the engine speed.

4. 4

   Replace the ECM

   If re-flashing the software does not correct the fault and the electrical supply is verified to be perfect, the ECM has an internal hardware failure regarding voltage monitoring and must be replaced.