Case IH 117 – Hitch Control Module / EDC / CCU / Armrest control module: L/H load sensing pin - signal too high

The signal voltage returning from the Left-Hand draft load sensing pin on the rear hitch is exceeding the expected parameters. The underlying condition is typically a short circuit to a +12 volt source in the wiring harness, or an internal failure/short within the load sensing pin itself.

• Farmall
• Magnum 7110
• Magnum 7120
• Magnum 7130
• Magnum 7140
• Magnum 7150
• Magnum 7210
• Magnum 7220
• Magnum 7230
• Magnum 7240
• Magnum 7250
• Magnum 8910
• Magnum 8920
• Magnum 8930
• Magnum 8940
• Magnum 8950
• Magnum 215-380
• MX80C-MX170
• Steiger 9110
• Steiger 9130
• Steiger 9150
• Steiger 9210-9260
• Steiger 9310-9350
• Puma 165
• Puma 180
• Puma 195
• Puma 210
• Puma 225
• CX50-CX100

1. 1

   Inspect the wiring harness leading to the left-hand draft load sensing pin on the rear hitch. Look for chafed insulation, melted wires, or pinched areas that could cause a short to +12V.

2. 2

   Disconnect the L/H pin and inspect the connector for moisture, corrosion, or bent pins which can bridge circuits and cause high voltage readings.

3. 3

   Check the reference voltage at the connector. The system typically operates on an 8V reference signal. Ensure the module is not sending excessive voltage.

4. 4

   Swap the left and right pins (if identical). If the code changes to 1015 ('R/H load sensing pin - signal too high'), the pin itself has failed internally. If the code remains 1017, the issue is in the tractor's wiring harness or the CCU.

1. 1

   Locate draft pins

   Locate the L/H and R/H draft load sensing pins on the rear hitch assembly.

2. 2

   Disconnect wiring harness

   Unplug the wiring harness connectors from both the left and right draft pins.

3. 3

   Install elimination modules

   Plug the two electronic load sensing elimination modules (dummy plugs provided in the kit) directly into the tractor's wiring harness.

4. 4

   Secure wiring

   Secure the new modules and the loose wiring to the tractor chassis using tie wraps to prevent them from catching on moving hitch components.

5. 5

   Verify repair and clear codes

   Turn the tractor on. The diagnosis system will no longer detect the defective pins, draft sensing will be permanently disabled, and the 1017 error code will clear. (Note: If draft control is strictly required for operations, you must install a replacement OEM draft pin instead, reconnect the harness, and perform a hydraulic lift autocalibration).