What was found
UPPER EFIS DISPLAY IS POWERED WHEN BATTERY SWITCH IS TURNED ON WITH EFIS POWER SWITCH IN THE OFF POSITION.
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
UPPER EFIS DISPLAY IS POWERED WHEN BATTERY SWITCH IS TURNED ON WITH EFIS POWER SWITCH IN THE OFF POSITION.