1997 ACURA NSX Service Repair Manual

Troubleshooting

NOTE: The numbers in the table show the troubleshooting sequence.ProCarManuals.com

Security Alar m Syste m
Contro l Uni t Inpu t Tes t ——
Remov e th e glov e box , an d disconnec t th e 22 P connec -
to r an d 16 P connecto r fro m th e contro l unit .
Inspec t th e connecto r an d socke t terminal s t o b e sur e
the y ar e al l makin g goo d contact .
I f th e terminal s ar e bent , loose , o r corroded , repai r
the m a s necessary , an d rechec k th e system .
I f th e terminal s loo k OK , mak e th e followin g inpu t
test s a t th e connector .
— If an y tes t indicate s a problem , fin d an d correc t th e
cause , the n rechec k th e system .
— If al l th e inpu t test s prov e OK , th e contro l uni t
mus t b e faulty ; replac e it .
Differen t wire s wit h th e sam e colo r hav e bee n give n a
numbe r suffi x t o distinguis h the m (fo r example ,
YEL/GRN1 and YEL/GRN2 ar e no t th e same) .
SECURIT YCONTROL UNI T
Wire
*: No t use d
Tes t conditio n
Test: Desire d resul t Possible caus e if resul t i s no t obtaine d
BLK
YEL/BL U
GRN
YEL
Unde r al l condition s
Unde r al l condition s
Unde r al l condition s
Ignitio n switc h O N (II ) Chec
k fo r continuit y t o ground :
Ther e shoul d b e continuity .
Chec k fo r voltag e t o ground : Ther e
shoul d b e batter y voltage .
Connec t t o ground : Th e
securit y indicato r shoul d com e on .
Chec k fo r voltag e t o ground : Ther e
shoul d b e batter y voltage . •
Poo r groun d (G401 , G402 , G403 )
• A n ope n i n th e wir e
• Blow n No . 1 8 (2 0 A ) fus e
• A n ope n i n th e wir e
• Blow n No . 4 5 (2 0 A ) fus e
• Fault y securit y indicato r
• A n ope n i n th e wir e
• Blow n No . 5 (1 5 A ) fus e
• A n ope n i n th e wir e
22PCONNECTO R
16P CONNECTO R
ProCarManuals.com

WireTes t conditio n Test: Desire d resul t Possible caus e if resul t i s no t obtaine d
LT GRN /
WHT
BLU/RE D
RED/YE L
LTGRN/
RED
YEL/GRN2
BLU/GR N
BLU
BLK/BR N
or BLK /
LT GR N
BRN/WH T
WHT
Unde r al l condition s
Unde r al l condition s
Unde r al l condition s
Passin g switc h O N
Hoo d ope n
Hoo d close d
Ignitio n ke y i s i n th e
ignitio n switch .
Ignition ke y is no t i n
th e ignitio n switch .
Engin e compartmen t
li d ope n
Engin e compartmen t
li d close d
Unde r al l condition s
Trun k ke y in UNLOC K
Trun k li d ope n
Trun k li d close d Attac
h t o ground : Al l horn s shoul d
sound .
Attac h t o ground :
Th e headlight s shoul d com e on .
Connec t t o ground :
Th e taillight s shoul d com e on .
Chec k fo r voltag e to ground :
Ther e shoul d b e batter y
voltage .
Check fo r continuit y t o ground :
Ther e shoul d b e continuity .
Chec k fo r continuit y t o ground :
Ther e shoul d b e n o continuity .
Chec k fo r continuit y t o ground :
Ther e shoul d b e continuity .
Chec k fo r continuit y t o ground :
Ther e shoul d b e n o continuity .
Chec k fo r continuit y t o ground :
Ther e shoul d b e continuity .
Chec k fo r continuit y t o ground :
Ther e shoul d b e n o continuity .
Chec k fo r continuit y t o ground :
Ther e shoul d b e continuity .
Chec k fo r continuit y t o ground :
Ther e shoul d b e continuity .
Chec k fo r continuit y t o ground :
Ther e shoul d b e continuity .
Chec k fo r continuit y t o ground :
Ther e shoul d b e n o continuity .•
Blow n No . 4 5 (2 0 A ) fus e
• Fault y hor n rela y
• Fault y hor n (either )
• Poo r groun d (G30 1 o r G302 )
• A n ope n i n th e wir e
• Fault y headligh t rela y
• Fault y headligh t syste m
• A n ope n in th e wir e
• Fault y tailligh t rela y
• Fault y tailligh t syste m
• A n ope n in th e wir e
• Fault y passin g switc h
• Fault y dimme r rela y
• Fault y headligh t rela y
• A n ope n i n th e wir e
• Fault y hoo d switc h
• Misadjuste d hoo d switc h
• Poo r groun d (G301 )
• A n ope n i n th e wir e
• Fault y ignitio n ke y switc h
• Poo r groun d (G401 , G402 , G403 )
• A n ope n in th e wir e
• Fault y engin e compartmen t li d
switc h
• Misadjuste d engin e compartmen t
li d switc h
• Poo r groun d (G401 , G402 , G403 )
• A n ope n in th e wir e
• Poo r groun d (G404 )
• A n ope n in th e wir e
• Fault y trun k ke y
• Poo r groun d (G551 )
• A n ope n i n th e wir e
* Fault y trun k latc h switc h
• Misadjuste d trun k latc h switc h
• Poo r groun d (G551 )
• A n ope n in th e wir e
(cont'd )
23-323ProCarManuals.com

Security Alarm System

Control Unit Input Test (cont'd)

Test condition

Test: Desired result
Possible cause if result is not obtained

GRN/BLU

GRN/RED
Driver's door open

Driver's door closed

Passenger's door

open

Passenger's door

closed
Check for continuity to ground:

When the door is open, there

should be continuity.

When the door is closed, there

should be no continuity.
• Faulty right door switch

• An open in the wire

GRN/YEL1
Driver's door key in

UNLOCK
Check for continuity to ground:

There should be continuity.

GRN/YEL2
Passenger's door key in

UNLOCK
• Faulty left or right door key switch

• Poor ground (G401, G402, G403)

• An open in the wire

GRN/WHT
Driver's door key in

LOCK

GRY/WHT
Passenger's door key in

LOCK
Check for continuity to ground:

There should be continuity, as the

door keylock is turned to LOCK.
• Faulty left or right door key switch

• Poor ground (G401, G402, G403)

• An open in the wire

BLU/RED2
Driver's door lock knob

in UNLOCK
Check for continuity to ground:

There should be continuity.
• Faulty left door lock knob switch

(Built into the actuator)

• Poor ground (G401, G402, G403)

• An open in the wire

BLU/RED3
Passenger's door lock

knob in UNLOCK
Check for continuity to ground:

There should be continuity.
• Faulty right door lock knob switch

(Built into the actuator)

• Poor ground (G401, G402, G403)

• An open in the wire

RED/GRN1
Roof unlatched

RED/YEL*1
Check for continuity to ground:

There should be continuity.
• Faulty right or left roof lock switch

• Poor ground (G401, G402, G403)

• An open in the wire

M: NSX-T (open top)
WireProCarManuals.com

Trunk Latc h Switc h Tes t
1. Ope n th e trun k lid , an d remov e th e trun k rea r tri m
panel .
2 . Disconnec t th e 3 P connecto r fro m th e trun k latch .
TRUN K LATC H
LOCK RO D
TRUN K OPENE RCABLE
View fro mwire sid e
3P CONNECTO R
3. Chec k continuit y a t th e trun k latc h connecto r termi -
nals.
Ther e shoul d b e continuit y betwee n th e B an d C
terminal s wit h th e trun k li d open .
Ther e shoul d b e n o continuit y betwee n th e B an d
C terminal s wit h th e trun k latc h i n LOC K (trun k
li d closed ) position .
Push dow n wit hscrewdrive r t o loc kthe latch .
Door Switc h Tes t
1. Remov e th e doo r pane l (se e sectio n 20 ).
2 . Disconnec t th e 2 P connecto r fro m th e doo r loc k
actuato r assembly .
DOOR LOC K ACTUATO RASSEMBLY(Has built-i n doo r switch )
View fro mtermina l sid e
2P CONNECTO R
DOOR SWITC H (Microswitc h type )
3. Chec k continuit y a t th e doo r switc h connecto r ter -
minals .
Ther e shoul d b e continuit y betwee n th e A termi -
na l an d B termina l wit h th e doo r open .
Ther e shoul d b e n o continuit y betwee n th e A
an d B terminal s wit h th e switc h pushe d (doo r
closed) .
ProCarManuals.com

Security Alar m Syste m
Indicato r Replacemen t
1. Remov e th e doo r pane l (se e sectio n 20 ).
2 . Remov e th e tw o screw s fro m th e indicator .
3 . Remov e th e indicato r fro m th e doo r panel .
5P CONNECTO RINDICATO
R
DOOR PANE L
Trunk Ke y Cylinde r Switc h Tes t
1. Ope n th e trun k lid , an d remov e th e trun k rea r panel .
2 . Disconnec t th e 2 P connecto r fro m th e trun k ke y
cylinde r switch .
3 . Chec k continuit y a t th e switc h connecto r terminals .
Ther e shoul d b e continuit y betwee n th e terminal s
whe n th e trun k loc k i s turne d t o UNLOC K wit h
the key .
Ther e shoul d b e n o continuit y whe n th e loc k i s
released .
TRUNK KE Y
CYLINDE R SWITC H
2PCONNECTO R
TRUNK KE YCYLINDE R
ProCarManuals.com

Engine Compartmen t Li d Switc h
Test
1. Ope n th e engin e compartmen t lid .
2 . Disconnec t th e 2 P connecto r fro m th e engin e com -
partmen t li d switch .
3 . Chec k continuit y a t th e switc h connecto r terminals .
Ther e shoul d b e continuit y betwee n th e terminal s
wit h th e leve r release d (li d open) .
There shoul d b e n o continuit y wit h th e leve r
pushe d dow n (li d closed) .
LEVER
2P CONNECTO R
View fro m
termina l sid e
Switc h Tes t
1. Ope n th e hood .
2 . Disconnec t th e 2 P connecto r fro m th e hoo d switch .
3 . Chec k continuit y a t switc h connecto r terminals .
There shoul d b e continuit y betwee n th e terminal s
with th e leve r release d (hoo d open) .
There shoul d b e n o continuit y with the leve r
pushe d dow n (hoo d closed) .
LEVER
2P CONNECTO R
23-327ProCarManuals.com

Security Alar m Syste m
Ignition Ke y Switc h Tes t
SRS component s ar e locate d i n thi s area . Revie w th e
SR S componen t locations , precautions , an d procedure s
i n th e SR S sectio n 24 befor e performin g repair s o r ser -
vice .
1. Remov e th e dashboar d lowe r cover , an d disconnec t
th e connectors .
DASHBOAR DLOWERCOVER
2. Disconnec t th e 8 P connecto r fro m th e floo r wir e
harness .
3. Chec k continuit y a t th e switc h connecto r terminals .
Ther e shoul d b e continuit y betwee n th e No . 8
an d No . 7 terminal s wit h th e ignitio n ke y inserte d
into th e ignitio n ke y cylinder .
There shoul d b e n o continuit y betwee n terminal s
No. 8 an d No . 7 wit h th e ignitio n ke y removed .
View fro m wir e sid e
23-32 8
8P CONNECTO R
ProCarManuals.com