Honda ACCORD HYBRID 2005 Service Manual page 2079

Unit Check
Select the item you want to check, and the test starts.
( Select Check Units ) 1 Return |
Display
Radio |
Navi ECU
PC Card Info! j
Display
This diagnostic performs additional checks on the
c o m m u n i c a t i o n bus between the control unit and the
display. In addition, the internal electronics and touch
screen functionality are c o n f i r m e d .
• W h e n 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
c o m m u n i c a t i o n line between the navigation unit and
the display unit. If the line is f o u n d to have an open or
short, replace the affected shielded harness.
• If the ROM or RAM is NG, replace the display unit.
• If the touch sensor is NG, then check for zeros in the
" X " , or " Y " values.
• The version represents the software version in the
display.
• The " 1 " f o l l o w i n g the X, indicate the 20 w o r k i n g
vertical infrared beams/receptors (from left to right).
The " 1 s " f o l l o w i n g the Y, indicate the 9 w o r k i n g
horizontal beams (from top to bottom). If any one of
the " 1 s " is a zero, this indicates that there is a
p r o b l e m w i t h one of the beams or receptors. Check
all around the inside rim of the navigation screen for
dirt or anything that may be blocking a beam. If
nothing is f o u n d , replace the display unit. See the
display unit diagram in the " S y s t e m D e s c r i p t i o n "
(see page 23-89) s h o w i n g the infrared beam layout.
Individual touch positions can be verified by running
the " T o u c h Panel" test under the M o n i t o r Check.
[ Display ) I Return I
Connection OK
[ ° K J
ROM OK
[ ° K J
RAM
OK
Touch Sensor
OK
Version
xxxxxx
X: 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 , Y: 1 1 1 1 1 1 1 1 1
(cont'd)
23-113