G R N; Red - Acura 2002 RSX Service Manual

Multiplex Control System
Multiplex Gontrol Unit Input Test (cont'dl
4 .
With the connectors still disconnected, make these input tests at the connector.
. l f a n y t e s t i n d i c a t e s a p r o b l e m , f i n d a n d c o r r e c t t h e c a u s e , t h e n r e c h e c k t h e s v s t e m
. lf all lhe input tests prove OK, go to step 5.
5. Reconnect the connectors to the under-dash fuse/relay box, and make sure these input tests at the appropriate connectors on the under
dash fuse/relay box.
. lf any test indicates a problem, find and correct the cause, then recheck the system.
. l f a l l t h e i n p u t l e s t s p r o v e O K , t h e m u l t i p l e x c o n t r o l u n i t m u s t b e f a u l t y , r e p l a c e t h e u n d e r d a s h f u s e / r e l a y b o x a s s e m b l V .
I
Cavitv Wire
Test condition Test: DesiJed result
Possible cause if result isnotobtained
J 4
BLK
U n d e r a l l c o n d i t i o n s
Check for cont;nuity to groundl
There should be continuitv.
Poor ground (G301)
An ooen in the wire
Y6 8 L K Under all conditions Check for continuity to ground:
There should be continuitv.
P o o r g r o u n d ( G 4 0 1 )
An ooen in the wire
Y1
BLK
Under all conditions Check for continuity to ground:
There should be continuitv.
Poor ground (G401)
An ooen in the wire
Cavitv Wire fest condition Test: Desired resull
Possible cause if result is notobtained
J2 WHT/RED U n d e r a i l c o n d i t i o n s C h e c k f o r v o l t a g e t o g r o u n d :
There should be battery voltage.
Blown No. I (7.54){use in the underhood
fuse/relay box
An oDen in the wire
o3
G R N D r i v e r ' s d o o r o p e n 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 1 V o r l e s s .
F a u l t y d r i v e r ' s d o o r s w i t c h
A n o o e n i n t h e w i r e
Driver's door closed 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 5 V o r m o r e .
F a u l t y d r i v e r ' s d o o r s w i t c h
Short to oround
o4
LT GRN/RED Passenger's door
oDen
Check for voJtage to ground:
There should be 1 V or less.
Faulty passenger's door switch
An ooen in the wirc
Passenger's door
ctoseo
Check for voltage to ground:
There should be 5 V or more
. Faulty passenger's door switch
' Short to oround
o8
c8
GRN/ORN
GRN/ORN
GRN/RED
P a r k i n g b r a k e l e v e r C h e c k t o r v o l t a g e t o g r o u n d l
T h e r e s h o u l d b e 1 V o r l e s s .
. Faulty parking brake switch
. An ooen in the wire
P a r k i n g b r a k e l e v e r 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 5 V o r m o r e .
FaultV parking brake switch
Shortto ground
o5
l g n i t i o n s w ; t c h O N l l l )
d r i v e r ' s s e a t b e l t i s
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 1 V o r l e s s .
Faulty driver's seat belt switch
Poor ground (G551)
. An open inthewire
o6
lgnition switch ON (ll)
driver's seat belt is
buckled.
Check {or voltage to ground:
There should be 5V or more.
. Faulty driver's seat belt switch
Shon to ground
P 1 8
RED
H a t c h o p e n C h e c k f o r v o l t a g e t o g r o L r n d :
T h e r e s h o u l d b e 1 V o r l e s s .
Faulty hatch latch switch
P o o r g r o u n d ( G 7 0 1 )
An ooen in the wire
H a t c h c l o s e d
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 5 V o r m o r e .
F a u l t y h a t c h l a t c h s w i t c h
S h o r t t o o r o u n d
X5
RED,ryVHT
lgnition key is in the
ignition switch
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 1 V o r l e s s .
Faulty ignition key switch
Poorground (G401)
An oDen in the wire
lgnition key is out of
the ionition switch
Check for voltage to ground:
There should he 5 V or more
Faulty ignition key switch
Shonto oround
22-180