John Deere 1498: Header Engage Output Transistor Fault

The header engage output transistor has detected an open, short, over voltage, or over temperature condition. The Armrest Control Unit will disengage the header to prevent further damage. The fault condition must be resolved before the header can be re-engaged.

1. 1

   The header engage output transistor

2. 2

   The circuit connected to the header engage output transistor

3. 3

   Power supply and voltage levels to the header engage output transistor

4. 4

   Temperature conditions around the header engage output transistor

1. 1

   Inspect

   Inspect the header engage output transistor for visible damage or signs of overheating.

2. 2

   Test

   Test the header engage output transistor for continuity, voltage, and temperature using appropriate diagnostic tools.

3. 3

   Check

   Check the circuit connected to the header engage output transistor for shorts, opens, or abnormal voltage levels.

4. 4

   Verify

   Verify that the power supply and temperature conditions around the header engage output transistor are within acceptable limits.

5. 5

   Reset

   Once the fault condition is resolved, reset the system and attempt to re-engage the header.