New Holland 12071 – INST: Communications Lost with Transmission Controller

The system has detected a loss of communication with the Transmission Controller. This may prevent proper operation of the transmission system and affect vehicle performance.

1. 1

   The connection between the INST controller and the Transmission Controller

2. 2

   The wiring harness for the Transmission Controller

3. 3

   The power supply to the Transmission Controller

1. 1

   Inspect

   Check the physical connection between the INST controller and the Transmission Controller for looseness, damage, or corrosion.

2. 2

   Test

   Use a multimeter to verify the voltage at the Transmission Controller's power supply circuit.

3. 3

   Inspect

   Examine the wiring harness for the Transmission Controller for any signs of damage, wear, or short circuits.