Navigation Syste m
System Diagnosi s Mod e
Start-u p procedur e an d Diagnosi s Men u
There ar e tw o way s t o ente r th e diagnosti c mode :
1 . Connec t th e SC S connecto r (se e ste p 2 o n pag e
23-52 ) t o th e navigatio n servic e connecto r focate d
i n th e trunk . Tur n th e ignitio n switc h t o th e O N (II )
position . Th e displa y wil l g o directl y t o th e diagnosti c
men u scree n show n below .
Note : whe n finishe d troubleshooting , mak e sur e t o
remov e th e SC S connector !
2 . Tur n th e ignitio n switc h t o th e O N (II ) position .
Us e th e navigatio n displa y har d button s a s describe d
below :
A . I f th e batter y ha s no t bee n disconnected , the n
pres s an d hol d th e 3 button s (Menu , Map/Guide ,
an d Cancel) , an d kee p the m presse d fo r
approximatel y 5 seconds . Th e displa y scree n wil l
g o directl y t o th e "Selec t Diagnosi s Items " men u
show n below .
B . I f th e batter y wa s disconnecte d an d reconnecte d
prio r t o thi s test , hol d dow n th e Men u an d Zoo m
Ou t button s a t th e "Code " o r "GP S Acquire "
screen . Th e displa y wil l g o t o th e "Nav i Syste m
Link " screen . Pus h th e joystic k t o g o to th e
"Functiona l Setu p menu, " the n touc h th e Retur n
icon t o ge t t o th e "Selec t Diagnosi s Items " menu .
Note : Thi s onl y allow s acces s t o th e diagnosti c
screens . Al l othe r navigatio n function s ar e
disabled .
DIAGNOSI S MEN U SCREE N
After th e displa y change s t o th e Selec t Diagnosi s Item s
menu , touc h th e ite m yo u wan t t o chec k an d th e chec k
wil l start . T o retur n t o th e previou s screen , touc h
"RETURN" .
• Nav i Syste m
(Link)
• Monito r Chec k
• Uni t Chec k •
Ca r Statu s
• GP S
Informatio n
• Ya w Rat e
• Tir e Calibrat e
• Functiona l
Setu p
• Versio n
Navi Syste m Lin k
• Thi s diagnosti c test s th e cable s connectin g th e navi -
gation components . Ensur e tha t th e ignitio n switc h is
in th e O N (II ) position . Whe n th e diagnosti c begins , a
"bong " soun d i s heard . Th e syste m is i n a
"Detecting " mode , an d i s waitin g fo r al l item s i n
whit e t o b e tested . Thi s include s th e voic e contro l
switch , an d microphone . Pres s th e TAL K butto n o n
th e voic e contro l switch , an d in a norma l voice , sa y
"testing" . Th e Tal k indicato r o n th e scree n shoul d
becom e green , an d th e voic e leve l indicato r shoul d
mov e to th e 6
th ba r t o pass . Next , pres s th e BAC K
button . Thi s shoul d caus e th e Cance l indicato r t o g o
green .
• I f al l o f th e communicatio n line s connectin g th e
syste m components , an d th e voic e contro l
switch/microphon e chec k ou t O K (al l bloc k dia -
gra m item s green) , the n th e O K indicato r wil l
becom e green .
• I f ther e i s a proble m wit h th e system , th e fault y
system componen t ite m wil l chang e to red , an d
the scree n wil l sho w "NG " i n red . Us e th e trou -
bleshootin g index , an d othe r diagnosti c screen s t o
hel p locat e th e problem .
• Th e indicatio n o n th e scree n wil l no t chang e unti l
th e ignitio n switc h i s cycled . Afte r repairin g th e
affecte d cabl e o r system , repea t thi s diagnostic .
NOTE : Green boxes an d gree n "OK " indicat e tha t
the communication s line s (cables ) ar e intact . Thi s
diagnosti c doe s no t necessaril y impl y tha t th e
individua l component s ar e functionin g properly .
Fo r instance , th e GP S antenn a wir e ma y b e
crushed , bu t stil l sho w a s "green" . A roa d test , o r
othe r diagnosti c ma y b e necessar y t o fin d th e
problem.
• Touc h th e Exi t Dia g ico n t o exit .
ProCarManuals.com
Navigation System
System Diagnosis Mode (cont'd)
Black Raster
The entire display must be shown in black.
Test Pattern
The chart below; shows the colors being used for the
map and menu screens. This is for factory use only. To
check the color signal use the "RGB Color" diagnostic
found under the Monitor Check menu item.
Monitor Adjustment
This allows the navigation display to be centered. Use
the joystick to move the picture up/down or left/right. It
is unlikely that you will ever need to adjust the monitor
position. The "Default" button will reset the display
position to factory specifications.
Touch Panel
The panel touch sensing system consists of 9 horizontal
and 20 vertical infrared beams. Touching the screen
blocks both a horizontal and a vertical beam. Every pos-
sible touch position is shown on this diagnostic screen.
Touching one of these areas should cause its color to
reverse, and sound a "beep". If any areas of the screen
either don't respond, or respond at some other location
when touched, then replace the display unit. The
"Display" diagnostic listed in Unit Check provides an
additional method to determine if one of the infrared
sources or detectors is bad.
NOTE: Direct sunlight can affect this test by falsely trig-
gering the infrared detectors, so perform this diagnostic
inside or in a shaded area.ProCarManuals.com
Unit Check
Touch the item you want to check and the check starts.
Display
This diagnostic performs additional checks on the com-
munication bus between the control unit and the dis-
play. In addition, the internal electronics and touch
screen functionality are confirmed.
• When the connection is NG, first check for loose ter-
minals 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 the line is found 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 below.
• The version represents the software version in the
display.
• The "1" following the X, indicate the 20 working ver-
tical infrared beams/receptors (from left to right).
The "Is" following the Y, indicate the 9 working hori-
zontal beams (from top to bottom). If any one of the
"1s" is a zero, this indicates that these is a problem
with one of the beams or receptors. Check all around
the inside rim of the navigation screen for dirt or any-
thing that may be blocking a beam. If nothing is
found, replace the display unit. See the display unit
diagram in the "System Description" showing the
infrared beam layout. Individual touch positions can
be verified by running the "Touch Panel" diagnostic
under the Monitor Check menu choice.
NOTE: When selecting this diagnostic from "Unit
Check," quickly remove your fingers from the touch-
screen to avoid a false detection of the infrared sen-
sors.ProCarManuals.com
