John Deere 000127.04: Transmission Oil Pressure Switch Low Volts Main Control Module (PTQ)

The fault code indicates a low voltage condition related to the Transmission Oil Pressure Switch in the Main Control Module (PTQ). This suggests an issue with the electrical signal from the switch to the control module.

1. 1

   The wiring and connections to the Transmission Oil Pressure Switch

2. 2

   The voltage supply to the Transmission Oil Pressure Switch

3. 3

   The integrity of the Transmission Oil Pressure Switch itself

1. 1

   Inspect

   Inspect the wiring and connections to the Transmission Oil Pressure Switch for damage, corrosion, or loose connections.

2. 2

   Test

   Test the voltage supply to the Transmission Oil Pressure Switch using a multimeter to ensure it meets the specifications outlined in the service manual.

3. 3

   Verify

   Verify the functionality of the Transmission Oil Pressure Switch by testing its output signal under operating conditions.