Case IH 2599 (519169.15) - DEC – DEC / TCU: Odd Clutch Pressure Sensor - Signal Higher Than Expected

The Odd Clutch Pressure Sensor is reading a hydraulic pressure or electrical voltage above the normal calibrated operating range.

• MAXXUM T4E
• Maxxum
• Puma
• Magnum

1. 1

   Check transmission fluid level and condition for contamination or debris that could cause valve body blockages leading to abnormal pressure readings.

2. 2

   Inspect the wiring harness connecting the DEC/TCU to the Odd Clutch Pressure Sensor for chafed wires or a short to power condition.

3. 3

   Use the Case IH Electronic Service Tool (EST) to monitor live pressure readings of the Odd Clutch Pressure Sensor and compare them against the Even Clutch Pressure Sensor.

4. 4

   Attempt a transmission clutch calibration to measure clutch engagement and determine if the clutch pack and solenoids are operating within correct parameters.

1. 1

   Park machine safely

   Safely park the machine on a flat surface, engage the parking brake, and turn off the engine.

2. 2

   Locate sensor

   Locate the Odd Clutch Pressure Sensor (often located on the transmission valve body or the side of the transmission housing, depending on the specific tractor model).

3. 3

   Disconnect harness

   Disconnect the electrical harness from the sensor.

4. 4

   Remove sensor

   Remove the faulty pressure sensor (be prepared to catch a small amount of hydraulic fluid).

5. 5

   Install new sensor

   Install the new Odd Clutch Pressure Sensor and torque to OEM specifications.

6. 6

   Reconnect harness

   Reconnect the electrical harness.

7. 7

   Top off fluid

   Top off the transmission hydraulic fluid if necessary.

8. 8

   Calibrate transmission

   Connect the diagnostic tool, clear the fault code, and perform a mandatory transmission clutch calibration procedure so the DEC/TCU can learn the values of the new sensor.