New Holland 2052 – TCM: Oil Temperature Sensor - Short Circuit

The Transmission Control Module (TCM) has detected a short circuit in the transmission oil temperature sensor's electrical circuit. The signal wire is likely shorted to ground or another wire, resulting in an abnormally low or zero voltage reading. This prevents the controller from accurately monitoring the transmission oil temperature, which can lead to improper system operation or damage since the data is used for transmission adjustments and system engagement.

• 5640
• 6640
• 7740
• 7840
• 8240
• 8340
• TS80
• TS90
• TS100
• TS110
• TS115
• TS100A
• TS110A
• TS115A
• TS125A
• TS135A
• T5.95
• T5.105
• T5.115
• T6010
• T6020
• T6030
• T6050
• T6070
• T6080
• T6090
• Boomer 3040
• Boomer 3045
• Boomer 3050
• Boomer 45D
• TL70
• Maxxum 110
• Maxxum 115
• Maxxum 120
• Maxxum 125
• Maxxum 130
• Maxxum 140
• MXM120
• MXM130
• MXM140
• MXM155
• MXM175
• MXM190
• MXU100
• MXU110
• MXU115
• MXU125
• MXU135
• Puma 115
• Puma 125
• Puma 130
• Puma 140
• Puma 145
• Puma 150
• Puma 155
• Puma 160
• Puma 165
• Puma 180
• Puma 185
• Puma 195
• Puma 200
• Puma 210
• Puma 220
• Farmall 40
• Farmall 45
• Farmall 50
• Farmall 55C
• Farmall 65C
• Farmall 75C
• Farmall 85C
• Farmall 90C
• Farmall 95C
• Farmall 100C
• Farmall 110C
• Farmall 120C

1. 1

   Visually inspect the wiring harness and connector leading to the transmission oil temperature sensor for chafing, cuts, pinched wires, or corrosion on the pins.

2. 2

   Check for supply voltage by disconnecting the sensor and turning the ignition 'on'. Measure for a 5V reference voltage at the sensor's harness connector.

3. 3

   Perform a sensor resistance test at the disconnected sensor using a multimeter. A short circuit is indicated by a very low or near-zero resistance reading across the pins.

4. 4

   Test the wiring harness for a short to ground (should read infinite resistance) and check for continuity on each wire between the sensor connector and the TCM pins.

1. 1

   Safety First

   Ensure the tractor is parked on a level surface, the engine is off, and the parking brake is engaged. Allow the transmission oil to cool completely before proceeding to avoid burns.

2. 2

   Locate the Sensor

   On New Holland T5 series tractors with a Power Shuttle transmission, the oil temperature sensor is located on the transmission control valve. Its precise location can vary between models, but it is typically threaded into the transmission or hydraulic valve block.

3. 3

   Disconnect and Remove

   Disconnect the electrical connector from the sensor. Place a drain pan underneath to catch any dripping oil. Using the appropriate size wrench, carefully unscrew and remove the old sensor.

4. 4

   Install the New Sensor

   Ensure the threads on the new sensor and in the transmission housing are clean. Apply an appropriate thread sealant to the new sensor's threads to prevent leaks.

5. 5

   Tighten and Reconnect

   Thread the new sensor in by hand, then tighten it to the manufacturer's specified torque. Overtightening can damage the sensor or the housing. Reconnect the electrical connector, ensuring it is clean, free of corrosion, and clicks securely into place.

6. 6

   Clear Fault Codes

   After the repair, use a diagnostic tool to clear the stored fault code 2052 from the Transmission Control Module.

7. 7

   Verify the Repair

   Start the tractor and let it run to bring the transmission oil up to operating temperature. Check for any fluid leaks around the new sensor. Monitor the dashboard display and use a diagnostic tool to confirm that the oil temperature reading is now within a plausible range and that the fault code does not reappear.