Honda ACCORD HYBRID 2005 Service Manual page 2095

Check for continuity between the appropriate
terminals of navigation unit connector A (20P) and
display unit connector B (20P) individually based
on the missing color(s).
Missing
Navigation Display unit
color
unit connector connector
A(20P) B <20P)
Blue A11 B10, B20
Green A2 B10, B20
Red A1 B10, B20
NAVIGATION UNIT C O N N E C T O R A (20P)
W i r e side of female t e r m i n a l s
R S I G (WHT)
1
2
/
5
/
8 9 m
/ /
14 15 17 18 19 20
DISPLAY UNIT C O N N E C T O R B (20P)
W i r e side of female t e r m i n a l s
Is there continuity?
Y E S — T h e r e is a short to body ground in the circuit
between the display unit and the navigation unit.
Replace the affected shielded harness. •
NO—Replace the navigation unit. If the problem is
still unresolved, replace the display unit (see page
2 3 - 7 1 ) . •
Picture has lines/rolls/other issues
NOTE:
• A l w a y s check the connectors for poor connections or
loose terminals.
• Before t r o u b l e s h o o t i n g , get the navigation system
anti-theft codes.
• After t r o u b l e s h o o t i n g , enter the navigation system
anti-theft codes.
1. Check for electronic aftermarket accessories
(possibly hidden) m o u n t e d near the display unit or
the navigation unit.
Are there any electronic accessories?
Y E S — D i s a b l e the accessories, and recheck. •
N O — G o t o step 2.
2. Start up the navigation picture.
Is the picture scrolling horizontally (left to right or
right to left)?
Y E S — C h e c k for an open or short to g r o u n d in the C
SIG w i r e f r o m navigation unit connector A (20P)
t e r m i n a l No. 12 to display unit connector B (20P)
terminal No. 19. Also check for a short to g r o u n d
between display unit connector B t e r m i n a l No. 19
and terminal No. 20. •
N O — G o t o step 3.
3. Go into the Diagnostic mode and use " R G B C o l o r "
test under Monitor Check (see page 23-111).
Is the picture missing a red, green or blue color?
Y E S — D o the troubleshooting for the picture is
missing a color o r t o n e (see page 2 3 - 1 2 8 ) . •
NO—Go to step 4.
(cont'd)
23-129