John Deere 03: Grain tank light (cc# 526) is ON when commanded OFF by left power module 1

The grain tank light (cc# 526) remains illuminated even though it has been commanded to turn off by the left power module 1. This indicates a discrepancy between the expected and actual state of the light.

1. 1

   The signal sent from the left power module 1 to the grain tank light (cc# 526)

2. 2

   The wiring or connection between the left power module 1 and the grain tank light (cc# 526)

3. 3

   The functionality of the grain tank light (cc# 526) itself

1. 1

   Verify the signal output from the left power module 1 to the grain tank light (cc# 526)

   Use a diagnostic tool to confirm that the left power module 1 is sending the correct command to turn off the grain tank light (cc# 526).

2. 2

   Inspect the wiring and connections

   Check the wiring and connections between the left power module 1 and the grain tank light (cc# 526) for any damage, corrosion, or loose connections.

3. 3

   Test the grain tank light (cc# 526)

   Test the grain tank light (cc# 526) independently to ensure it is functioning correctly and not remaining on due to internal failure.