Acura 3.5 RL Manual page 1347

Unit Check
Disp (Display Unit)
System History
GPS Information
Touch the item you want to check, and the check starts.
NOTE: Do not use "Force Download". This command is for the manufacturer's
use only.
When the connection is NG
Check for an open or short in the communication line. If the line is OK,
replace the display unit.
When the ROM or RAM is NG
Replace the display unit.
This screen is for the manufacturer's use only.
NOTE: Do not touch the CLR switch.
Touching the CLR switch will clear the system history.
This screen shows the condition of the GPS reception and the vehicle position.