Honda Accord 2008 Manual page 2676

07/11/02 10:05:50 61TA0000_230_0232
5. Substitute and a known-good climate control unit.
Reconnect all connectors and reset.
Do the symptom go away?
YES − Replace the original climate control unit
(see page 21-164).
−
NO Replace the navigation unit (see page 23-240).
Display day/night mode does not work
NOTE:
• Turn the headlight on and check that the dash
brightness setting is not set to high.
• Check the connectors for poor connections or loose
terminals.
• Always check for and resolve all CAN DTCs before
troubleshooting the navigation system.
• Verity that the correct navigation unit is installed for
this model. Go into the Diagnostic mode and use
Version (see page 23-190).
• Make sure that the correct DVD color and version are
installed.
• Inspect the DVD for dirt or damage.
• Check any official Honda service website for more
service information about the navigation system.
1. Turn the headlights on, and adjust the dash
brightness up and down, then to the middle range.
Does the display change to day and night modes
when turning the headlights on and of f ?
YES − The system is OK at this time.
−
NO Go to step 2.
2. Cover the sunlight sensor on the dash, then turn
the headlights on and off.
Does the navigation display dim and brighten
normally?
YES − The system is OK at this time.
NO − Check the ILL ＋ circuit for an open or short to
ground between the navigation display to the
gauge control module. If OK, substitute known-
good units in this order and recheck the system:
• Navigation unit
• Climate control unit
• Gauge control unit
ＴＡ０８ＡＮ１Ｊ３６１００００００００ＦＡＡＴ１２
23-231 23-231