Honda Civic Service Manual page 1735

)
l - l
Disconnect the A and B connectors from the audio unit.
Cavity
Wire
Test condition
Test: Desired result
Possible cause if result is not obtained
Reconnect the B connector only to the audio unit.
Cavity
Wire Test condition
Test: Desired result
Possible cause iI result is not obtained
B9 G R N / O R N
Driver's door lock
s w i t c h i n U N L O C K
Check for voltage to ground:
T h e r e s h o u l d b e 1 V o r l e s s .
. P o o r g r o u n d 1 G 5 5 1 )
. Faulty driver's door lock switch
. An open in the wire
. S h o r t i n t h e w i r e
Driver's door lock
switch in LOCK
Check for voltage to grou nd:
There should be 4 V or more.
8 1 0
G R NAr'r'HT
Driver's door lock
switch in UNLOCK
Check for voltage to ground:
There should be 4 V or more.
. P o o r g r o u n d ( G 5 5 1 )
. Faulty driver's door lock switch
. A n o p e n i n t h e w i r e
. S h o n i n t h e w i r e
Driver's door lock
switch in LOCK
Check lor voltage to ground:
There should be I V or less.
23-263
A4 WHT/BLU
L J n d e r a l l c o n d i t i o n s
Check {or voltage to ground:
There should be battery voltage.
. B l o w n N o . 4 7 ( 7 . 5 A ) t u s e i n t h e
u n d e r h o o d f u s e , i r e l a y b o x
. A n o p e n n t h e w r e
A 5
YEL/RED
lg nition swirch ACC (l) Check for voltage to ground:
There should be battery voltage.
B l o w n N o . 2 8 , I 0 A ) f u s e i n t h e
u n d e r d a s h f u s e . e l a y b o x
A n o p e n " : n e n r e
Check for voltage to ground:
There should be battery voltage.
C h e c k f o r c o n t i n u i t y t o g r o u n d r
T h e r e s h o u l d b e c o n t i n u i t y .
B o $ . \ .
' . 1 - 5 A ' i u s e n t h e
, , ^ o e ' a a s _ ' - s e r e l a y b o x
A _ o o e ^ ' : n e w r r e
P c . ' E ' o - - d r G 4 0 1 , G 4 0 2 )
A - o o e n n l h e w i r e
B6
B LK,/YE L
lgnition switch ON
0 l )
8 1 5 8 L K
U n d e r a l l c o n d i t i o n s
B1 B L U / R E D
lgnition key inserted
i n t o t h e i g n i t i o n k e y
swrtch
Check for voltage to ground:
There should be 1 V or less
C h e c k f o r v o l t a g e t o g r o u n d :
T h e r e s h o u l d b e 4 V o r m o r e
P o o r g r o u n d ( G 4 0 1 , G 4 0 2 )
Faulty ignition key switch
A n o p e n i n t h e w i r e
S h o r t i n t h e w i r e
A n o p e n i n t h e w i r e
C h e c k f o r c o n t i n u i t y b e r w e e . l F e
a u d i o u n i t 1 6 P c o n n e c t o r l - o 3 l e r -
m i n a l a n d p o w e r d o o r l o c k c o n t r o l
u n i t 1 2 P c o n n e c t o r N o . 6 l e r m r n a l :
T h e r e s h o u l d b e c o n t i n u t y
lgnition key removed
from the ig nition key
swtlcn
B3 B LUlt/E L
U n d e r
a l l c o n d i t i o n s
B8
LT GRN/
B L K
C e i l i n g l i g h t s w i t c h i n
" m i d d l e p o s i t i o n "
C o n n e c t t o g r o u n d :
T h e c e i l i n g l i g h r s h o u l dc o m e o n .
B l o w n N o . 4 3 ( 7 . 5 A ) f u s e i n t h e
under-hood Iuse/relay box
B l o w n c e i l i n g l i g h t b u l b
F a u l t y c e i l i n g l i g h t
A n o p e n i n t h e w i r e
8 1 4
LT GRN/
R E D
Each door open, one at
a t i m e
C h e c k t o r v o l t a g e t o g r o u n d :
T h e r e s h o u l d b e ' l V o r l e s s .
. Faulty door switch
. A n o p e n i n t h e w i r e
Br6
G R Y
U n d e ra l l c o n d i t i o n s
Connect to groundl
H o r n s h o u l d s o u n d .
. Blown No. 52 ('15 A) fuse in the
under-hood fuse/relay box
. Fau lty horn
. F a u l t y h o r n r e l a y
. A n o p e n i n t h e w i r e