New Holland ATC 113 – ATC (Automatic Temperature Control) Module: Outlet sensor open or shorted to power

Indicates a circuit failure where the HVAC system's controller detects an abnormally high voltage on the outlet temperature sensor circuit. This condition is typically caused by a broken wire (open circuit), a disconnected sensor plug, an internally failed sensor, or a wire that has rubbed through and is shorting directly to a 12-volt power source.

• New Holland T8.xxx Series (e.g., T8.275, T8.300, T8.390)
• New Holland T7 Series (e.g., T7.220, T7.235, T7.250)
• New Holland T6 Series (e.g., T6.160)
• New Holland T6000 Series (e.g., T6010, T6020, T6070)
• New Holland TG Series (e.g., TG215)
• New Holland CR Series (e.g., CR9040, CR9060, CR9070)
• New Holland CX Series (e.g., CX720, CX8030, CX8090)

1. 1

   Locate the HVAC outlet temperature sensor (Air Off sensor) and check the electrical connector. Ensure the plug is fully seated and pins are not pushed out or corroded.

2. 2

   Inspect the wiring harness running between the ATC module and the outlet sensor. Look for pinched wires, chafing, or breaks that could cause an open circuit or a short to a 12V power source.

3. 3

   Using a multimeter, test the resistance of the thermistor probe. If the sensor reads completely open (infinite resistance), the sensor has failed internally and must be replaced.

1. 1

   Disconnect battery

   Turn off the machine and disconnect the battery to prevent electrical shorts during repair.

2. 2

   Locate outlet temperature sensor

   Access the HVAC blower and ducting assembly (location varies by cab model, often under the seat or behind the headliner trim) to locate the outlet temperature sensor.

3. 3

   Disconnect harness

   Disconnect the electrical harness from the sensor.

4. 4

   Repair damaged wiring

   If the diagnostic checks revealed damaged wiring, repair the broken or shorted section of the harness and seal it with heat shrink.

5. 5

   Remove failed sensor

   If the sensor itself failed the resistance test, pull the old sensor probe out of the HVAC evaporator/duct housing.

6. 6

   Install new sensor

   Insert the new OEM temperature sensor probe into the housing.

7. 7

   Reconnect harness

   Reconnect the electrical connector to the new sensor.

8. 8

   Clear fault codes

   Reconnect the battery, turn the ignition on, and clear the inactive fault codes from the ATC module using the tractor's diagnostic display or a CAN-bus service tool.

9. 9

   Verify HVAC operation

   Run the HVAC system to verify that the ATC 113 code does not return and that the automatic climate control regulates the blower speed and temperature correctly.