Case IH N – Transmission Control Unit (TCU): Shift To Neutral To Re-Enable The Transmission

Triggers when the tractor is stationary and the operator attempts to engage the drive without following the proper safety sequence (e.g., moving the range selector lever out of Neutral without first depressing the clutch).

• MXM
• MXM 120
• MXM 130
• MXM 140
• MXM 155
• MXM 175
• MXM 190
• Maxxum 110
• Maxxum 115
• Maxxum 120
• Maxxum 125
• Maxxum 130
• Maxxum 140
• Farmall 85C
• Farmall 95C
• Farmall 105C

1. 1

   Verify that the operator is fully depressing the clutch pedal before moving the shuttle or range lever out of neutral.

2. 2

   If the correct sequence is followed but the code remains, check the Shuttle Lever Neutral Switch and the Clutch Pedal Switch/Potentiometer for physical damage, sticking, or wiring faults (short to ground or open circuit).

1. 1

   Depress clutch

   Fully depress the clutch pedal.

2. 2

   Shift to neutral

   Move the shuttle lever (or range selector lever) back to the Neutral position.

3. 3

   Verify code clears

   Verify that the 'N' error code disappears from the gearbox display and the audible alarm stops.

4. 4

   Re-engage drive

   Re-engage the drive normally.

5. 5

   Test and replace switches if code persists

   If the code does not clear: Use a multimeter or dealer diagnostic tool to test the shuttle lever switches and clutch pedal potentiometer. If the shuttle lever is physically in neutral but the switch reads as 'Forward' or 'Reverse', replace the faulty shuttle switch.