Honda 2007 Acura RL User Manual page 91

2005-08 ACCESSORIES AND EQUIPMENT Navigation System - RL
a. OFF (0) if illumination cancel is not selected
b. ON (1) if illumination cancel is activated
The illumination cancel function is activated by increasing the dash brightness to "MAX" using the "+"
button. The CAN bus passes this information from the gauge control module to the navigation control unit.
NOTE: This setting is unaffected by the "display mode" hard button located below
and to the left of the interface dial.
ILL-Illumination Indication

(Pin 5 of navigation unit A-connector)
a. OFF (0) when parking lights, or headlights are off
b. ON (1) when parking lights, or headlights are off
This signal is used by the navigation unit to determine whether to put the navigation screen into the Day or
Night brightness mode (Setup screen 1).
DVD Lid-senses if DVD door is open

a. (Close) when door is closed
b. (Open) when door is open
The navigation unit has a micro switch to detect this. If open is indicated when the door is closed, replace
the navigation unit.
F-CAN SYSTEM LINK
F-CAN (Fast Controller Area Network) passes information between processors on the network. For
example, the F-CAN network is used to pass charging system signals between the PCM and the navigation
unit for the trip computer cooling fan function. The F-CAN network uses a communication protocol that
transmits data at 500 Kbps.
If the diagnostic screen below reads NG with the ignition switch ON (II), then you can use the HDS

(Honda Diagnostic System) to retrieve the diagnostic trouble codes (DTC) from the F-CAN. The data
displayed in the ID boxes is irrelevant.
For more details on troubleshooting the F-CAN, refer to MULTIPLEX INTEGRATED

CONTROL SYSTEM article.
2007 Acura RL