A strong answer covers:

• What you did: didn't trust the LED, measured the actual voltage at the output terminal, then checked the output-group fuse.
• The reason: the LED is lit (logic commands it) but the terminal reads 0V, and the output-group fuse is open, so the command never leaves the card.
• Determined outcome: replace the blown fuse and find what popped it, don't swap the card or the solenoid on the strength of an indicator light.