1997 ACURA NSX light

Immobilizer Syste m
Problem s an d Replacemen t Part s
Parts Set :
A: Blan k ke y
B: Immobilize r contro l uni t
Maste r ke y
Learnin g ke y
C : Immobilize r receive r
D : Ignitio n switc h wit h immobilize r receive r
Immobilize r contro l uni t
Maste r ke y
Learnin g ke y
E: EC M
F: Doo r ke y cylinde r
Maste r key s fo r door s ope n o r locke d
G : Ignitio n switc h wit h immobilize r receive r
Immobilize r contro l uni t
Maste r ke y
Learnin g ke y
Doo r ke y cylinder s
Trun k ke y cylinde r
Glov e bo x ke y cylinde r
NOTE:
The immobilize r syste m ca n stor e u p t o fiv e ke y codes .
I f i t i s necessar y t o rewrit e th e immobilize r contro l uni t t o lear n a ne w key , th e deale r need s th e customer' s vehicle , al l
it s maste r key s an d vale t keys , it s learnin g key , an d th e Hond a PG M Teste r equippe d wit h a n immobilize r progra m
card . An y ke y tha t i s no t learne d durin g rewritin g wil l n o longe r star t th e engine .
I f th e custome r ha s los t hi s key , an d canno t star t th e engine , contac t Acur a Custome r Relation s o r Roadsid e Assistance .
Befor e Testing :
Du e t o th e actio n o f th e immobilize r system , th e engin e take s slightl y mor e tim e t o star t tha n th e engin e o f a vehicl e
withou t a n immobilize r system .
Whe n th e syste m is normal , an d th e prope r ke y i s inserted , th e indicato r ligh t come s o n fo r tw o seconds , the n i t wil l g o
off .
If th e indicato r start s t o blin k afte r tw o seconds , o r i f th e engine does no t start , repea t th e startin g procedure .
— If th e engin e stil l doe s no t start , perfor m th e immobilize r contro l uni t inpu t tes t an d transponde r an d immobilize r
receive r test .
I f al l th e inpu t test s an d transponde r an d immobilize r receive r tes t prov e OK , chec k th e EC M (se e sectio n 11 ).
— If th e EC M is OK , th e immobilize r contro l uni t mus t b e faulty ; replac e th e immobilize r contro l unit , maste r ke y an d
learnin g ke y together , an d the n rewrit e th e EC M wit h th e Hond a PG M Tester .
— If th e EC M is faulty , substitut e a known-goo d ECM , an d recheck . However , sinc e th e known-goo d EC M ha s a differ -
ent cod e store d int o it , i t mus t b e rewritte n wit h th e Hond a PG M Tester . Otherwise , th e engin e wil l no t start .
Proble m Parts se t
Maste r o r vale t ke y ha s bee n los t o r additiona l maste r o r vale t ke y i s required .
Al l maste r an d vale t key s hav e bee n lost .
Learnin g ke y ha s bee n lost .
Immobilize r receive r doe s no t work .
Immobilize r contro l uni t doe s no t work .
ECM doe s no t work .
Ignitio n switc h doe s no t work .
Doo r ke y cylinde r ha s bee n broken . PCM-Teste
r
required?
A
A x 2, and B
B
C
B
E
D
F(G )
YES
YES
YES
NO
YES
YES
YES
NO (YES)
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Immobilizer Receiver and Transponder (Key) Test

IMMOBILIZER

CONTROL

UNIT

Does the immobilizer indi-

cator blink?
Perform the control unit input

test.

Try to start the engine with another

master key or valet key from this

vehicle.

Does the engine start?
Replace the transponder (igni-

tion key).

3P CONNECTOR

"B"

Does the engine crank?

Rewrite the immobilizer control

unit and the ECM with the PGM

Tester.
Check for an open in the BRN

wire between the immobilizer

control unit and the ECM. If the

wire is OK, rewrite the ECM with

the PGM Tester.

Does the engine start?

Immobilizer system is OK now.

Wire side of

female terminals

Is there continuity?
Short in the shielded wires

between the immobilizer receiver

and the immobilizer control unit.

Replace the wire harness.

Measure resistance between the

B1 and B3 terminals of the 3P con-

nector.

Is there about 15 ohms?
Faulty receiver or open in the

shielded wires between the immo-

bilizer receiver and immobilizer

control unit.

Replace the immobilizer control

unit.
1. Turn the ignition switch ON (II).

2. Check that the immobilizer

indicator light starts blinking

after two seconds.

1. Turn the ignition switch OFF.

2. Disconnect the 3P connector

"B" from the immobilizer con-

trol unit.

3. Check for continuity between

the B1 and B2, and the B3 and

B2 terminals of the 3P connec-

tor.ProCarManuals.com

Troubleshooting
Self-diagnosis Functio n
The SR S uni t include s a self-diagnosi s function . I f ther e
i s a failur e in th e sensors , SR S unit , inflator , o r thei r cir -
cuits , th e SR S indicato r ligh t i n th e gaug e assembl y
goe s ON .
SRS INDICATO R LIGH T
As a syste m check , th e SR S indicato r ligh t als o come s
o n whe n th e ignitio n i s firs t turne d t o th e I I position . I f
th e ligh t goe s of f afte r approximatel y si x seconds , th e
syste m is OK .
I f th e SR S indicato r ligh t remain s o n (o r fail s t o com e o n
th e syste m chec k mode ) on e o f th e SR S component s
(o r th e wiring/connector s in-between ) i s faulty .
Troubleshootin g Precaution s
Always us e th e tes t harness . D o no t us e tes t
probe s directl y o n componen t connecto r ter -
minal s o r wires ; yo u ma y damag e the m o r th e
contro l unit .
Whe n connectin g an y o f th e tes t harnesse s t o
th e system , pus h th e connector s straight-in ; d o
no t ben d th e connecto r terminals .
Befor e disconnectin g th e airba g connector(s) ,
tur n of f th e ignitio n switc h an d wai t fo r a t leas t
thre e minute s t o le t th e capacito r i n th e back-u p
circui t discharge . Thi s wil l preven t a malfunctio n
o f th e sea t bel t tensioners .
Befor e disconnectin g an y par t o f th e SR S wir e
harness , instal l th e shor t connecto r (RED ) o n th e
airbag s an d bot h sea t bel t tensioners . Afte r in -
stallin g th e shor t connector s o n th e airbags ,
immediatel y instal l on e SR S Servic e Connecto r
(Too l Numbe r 07MAZ-SP0020A ) o n th e cabl e
ree l connecto r (fo r th e driver' s airbag) , an d
anothe r o n th e SR S mai n harnes s connecto r (fo r
th e passenger' s airbag) . Thi s wil l preven t an y
stati c electricit y fro m triggerin g th e sea t bel t
tensioner s befor e yo u disconnec t the m (se e pag e
24-10 ).
SR S Indicato r Ligh t Troubleshootin g
Possible conditions :
1. SR S indicato r ligh t doe s no t com e o n a t al l — se e
pag e 24-15 .
2 . SR S indicato r ligh t stay s o n constantl y — se e pag e
24-18 .
3 . SR S indicato r ligh t come s o n in combinatio n wit h a
failur e o f anothe r electrica l syste m (brak e syste m
light , malfunctio n indicato r lam p etc.) . Chec k fo r
damage/corrosio n a t th e under-das h fus e box .
NOTE :
Before startin g th e applicabl e troubleshooting ,
chec k th e conditio n o f al l SR S connector s an d
groun d points .
I f th e faul t i s no t foun d afte r completin g th e ap -
plicabl e troubleshooting , substitut e a known -
goo d SR S uni t an d chec k whethe r th e SR S in -
dicato r ligh t goe s off . I f i t does , th e origina l SR S
uni t mus t b e faulty ; replac e it .
ProCarManuals.com

Supplemental Restrain t Syste m (SRS )
Cable Ree l Remova l
Store a remove d airba g assembl y wit h th e
pa d surfac e up . I f the airba g i s improperl y store d fac e
down , accidenta l deploymen t coul d prope l th e uni t wit h
enoug h forc e t o caus e seriou s injury .
CAUTION :
Carefully inspec t th e airba g assembl y befor e install -
in g it . D o no t instal l a n airba g assembl y tha t show s
sign s o f bein g droppe d o r improperl y handled , suc h
as dents , crack s o r deformation .
Always kee p th e shor t connector s (RED ) o n th e air -
bag s whe n th e harnes s i s disconnected .
D o no t disassembl e o r tampe r wit h th e airba g
assembly .
1. Disconnec t th e batter y negativ e cabl e an d the n th e
positiv e cable .
2 . Befor e disconnectin g an y par t o f th e SR S wir e
harness , instal l th e shor t connector s (RED ) (se e pag e
24-10 ).
3 . Mak e sur e th e wheel s ar e aligne d straigh t ahead .
4. Remov e th e dashboar d lowe r cover , the n discon -
nect th e foo t ligh t connecto r an d lights-o n chim e
connecto r fro m th e dashboar d lowe r cover .
FOOT LIGH TCHIMEDASHBOAR DLOWER COVE R
5. Remov e th e colum n covers .
UPPER COLUM N COVE R
LOWE R
COLUM N COVE R
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7. Instal l th e steerin g whee l nut .
8 . Instal l th e driver' s airba g assembly .
STEERING WHEE L NU T
4 9 N- m (5. 0 kgf-m , 3 6 Ibf-ft )
Replace .
DRIVER' S AIRBA G
TOR
X BOL T
9. 8 N- m (1. 0 kgf-m , 7. 2 Ibf-ft )
Replace . ASSEMBL Y
Us e a Tor x T3 0 bi t
9. Connec t th e cabl e ree l harnes s t o th e SR S mai n
harnes s belo w th e peda l bracket .
10 . Connec t th e foo t ligh t harnes s an d lights-o n chim e
t o th e dashboar d lowe r cover , the n instal l th e lowe r
cover .
DASHBOAR D
LOWE R COVE R
CHIMEFOOT LIGH T
11. Remov e th e shor t connecto r (RED ) fro m th e
passenger' s airba g an d th e SR S Servic e Connecto r
fro m th e SR S mai n harness .
1 2 . Reconnec t th e passenger' s airba g 3 P connecto r t o
th e SR S mai n harnes s connector , the n reinstal l th e
glov e box .
13 . Remov e th e shor t connecto r (RED ) fro m th e
driver' s airba g an d th e SR S Servic e Connecto r fro m
the cabl e reel .
14 . Reconnec t th e driver' s airba g 3 P connecto r t o th e
cabl e ree l 3 P connector . Attac h th e shor t connecto r
(RED ) t o th e acces s panel , the n reinstal l th e pane l
o n th e steerin g wheel .
15 . Remov e th e shor t connecto r (RED ) fro m bot h sea t
bel t tensioners , the n attac h th e shor t connector s
(RED ) t o thei r holders .
16 . Reconnec t th e floo r wir e harnes s connector s t o th e
driver' s an d passenger' s sea t bel t tensioners .
ProCarManuals.com

Supplemental Restraint System (SRS)

SRS Unit Assembly Installation

CAUTION: Be sure to install the SRS wiring so that it is

not pinched or interfering with other car parts.

1. Install the SRS unit.

TORX BOLTS 6 mm

9.8 N-m (1.0 kgf-m, 7.2 Ibf-ft)

Replace.

Use a Torx T30 bit

TORX BOLTS 6 mm

9.8 N-m (1.0 kgf-m, 7.2 Ibf-ft)

Replace.

Use a Torx T30 bit

2. Clip the SRS main harness into the harness holder,

then connect the SRS main harness 18P connec-

tor to the SRS unit; push it into position until it

clicks.

3. Install the carpet.
4. Remove the short connectors (RED) from the pas-

senger's airbag, and remove the SRS Service

Connector from the SRS main harness.

5. Reconnect the passenger's airbag 3P connector to

the SRS main harness 3P connector, then reinstall

the glove box.

6. Remove the short connector (RED) from the driver's

airbag, and remove the SRS Service Connector

from the cable reel.

7. Reconnect the driver's airbag 3P connector to the

cable reel 3P connector. Attach the short connec-

tor (RED) to the access panel, then reinstall the

panel on the steering wheel.

8. Remove the short connectors (RED) from both seat

belt tensioners, then attach the short connectors

(RED) to their holders.

9. Reconnect the floor wire harness 3P connectors to

the driver's and passenger's belt tensioners.

10. Reconnect the battery positive cable, then the

negative cable.

11. After installing the SRS unit, confirm proper system

operation:

Turn the ignition switch ON (II); the SRS indicator

light should come on for about six seconds and

then go off.ProCarManuals.com