Honda ACCORD 2008 Manual page 7

INTERACTIVE NETWORK
Some of the tests and screens that are displayed under the Unit Check are different from the more detailed checks listed in other areas of this service manual.
To start the test, select the item you want to check.
Display
Radio
GPS
ECU Info.
Rear Camera
PC Card Info.
Hard Key
Yaw Sensor
DVD
Aircon
HFL
XM
Display
This diagnostic does additional checks on the communication bus between the control unit and the display. In addition, the internal electronics functionality are confirmed.
When the connection is NG, first check for loose terminals at the navigation unit and the display unit connections. Next check for an open or short in the communication
line between the navigation unit and the display unit. If you find the line has an open or short, replace the affected shielded harness.
If the ROM or RAM is NG, replace the display unit.
The version represents the software version in the display.
Radio
If NG is indicated, check for loose audio unit connectors.
NOTE: If the XM link was displayed red, but the radio link was displayed green in the navigation system link, refer to audio system symptom troubleshooting.
American Honda Motor Co., Inc. Page 7 of 20