1997 ACURA NSX Service Repair Manual

Five-step Troubleshootin g —————
1. Verif y Th e Complain t
Tur n o n al l th e component s i n th e proble m circui t t o
verif y th e custome r complaint . Not e th e symp -
toms . D o no t begi n disassembl y o r testin g unti l yo u
hav e narrowe d dow n th e proble m area .
2 . Analyz e Th e Schemati c
Loo k u p th e schemati c fo r th e proble m circuit .
Determin e ho w th e circui t i s suppose d t o wor k b y
tracin g th e curren t path s fro m th e powe r fee d
throug h th e circui t component s t o ground . I f
severa l circuit s fai l a t th e sam e time , th e fus e o r
groun d i s a likel y cause .
Base d o n th e symptom s an d you r understandin g o f
th e circui t operation , identif y on e o r mor e possibl e
cause s o f th e problem .
3 . Isolat e Th e Proble m B y Testin g Th e Circui t
Mak e circui t test s t o chec k th e diagnosi s yo u mad e
i n ste p 2 . Kee p i n min d tha t a logical , simpl e pro -
cedur e i s th e ke y t o efficien t troubleshooting . Tes t
fo r th e mos t likel y caus e o f failur e first . Tr y t o mak e
test s a t point s tha t ar e easil y accessible . 4
. Fi x Th e Proble m
Onc e th e specifi c proble m is identified , mak e th e
repair . B e sur e t o us e prope r tool s an d saf e
procedures .
5. Mak e Sur e Th e Circui t Work s
Tur n o n al l component s i n th e repaire d circui t i n al l
mode s t o mak e sur e you'v e fixe d th e entir e pro -
blem . I f th e proble m wa s a blow n fuse , b e sur e t o
tes t al l o f th e circuit s o n tha t fuse . Mak e sur e n o
ne w problem s tur n u p an d th e origina l proble m
doe s no t recur .
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Relay and Control Unit Locations

Front Compartment

ABS REAR FAIL-SAFE

RELAY
RADIATOR FAN LOW RELAY

RADIATOR FAN HIGH RELAY

UNDER-HOOD

RELAY BOX

CONDENSER FAN

RELAY

REVERSE LOCKOUT RELAY (M/T)
WINDSHIELD WIPER

INTERMITTENT RELAY

WINDSHIELD WIPER

HIGH RELAY

UNDER-HOOD

RELAY BOX B

WINDSHIELD WIPER

LOW RELAY
A/C COMPRESSOR

ABS FRONT FAIL-SAFE CLUTCH RELAY

RELAY

POWER AMPLIFIER RELAY

BLOWER MOTOR HIGH RELAY

RIGHT HEADLIGHT RETRACTOR

CUT RELAY

WINDSHIELD WASHER

MOTOR RELAY

LEFT HEADLIGHT

RETRACTOR CUT RELAY

BLOWER MOTOR

RELAY

DIMMER RELAY

POWER WINDOW

RELAY

TAILLIGHT RELAY

ABS MOTOR RELAY

UNDER-HOOD FUSE/RELAY BOX

HEADLIGHT RELAY
HORN RELAY

RIGHT HEADLIGHT RETRACTOR RELAY

Wire colors: BLU/GRN,

BRN/WHT, BLU/RED,

GRN/YEL, and BLK

LEFT HEADLIGHT RETRACTOR RELAY

Wire colors: BLU/BLK,

WHT/BLK, GRN/RED,

BLU,
and BLKProCarManuals.com

Relay and Control Unit Locations

Dashboard

IMMOBILIZER CONTROL UNIT
CLIMATE CONTROL UNIT

TURN SIGNAL/HAZARD

RELAY

DASHBOARD

LOWER COVER

INTEGRATED

CONTROL UNIT

UNDER-DASH FUSE BOXProCarManuals.com

Dashboard, Doo r an d Floo r
DRIVER' S DOO R PANE LABS CONTRO L UNI T
DAYTIM E RUNNIN GLIGHTS CONTRO LUNIT (Canada )
POWER WINDO WCONTRO L UNI T
SECURIT Y CONTRO L UNI T
POWE
R DOO R LOC K
CONTRO L UNI T
CIGARETT E LIGHTE RRELAYWire colors : YEL/RED ,
BLU/GRN , BRN/YEL . an d BL K FOO
T WEL L BAS S SPEAKE R
EPS CONTRO L UNI T(Behin d foo t wel lbass speaker )
RIGH T FRON T FLOO R
PANEL
SRS UNI T
STARTE R CU T RELA Y
Wir e colors : BLK/WHT ,
BLK/WHT , BLK/GRN ,
an d BLK/BL U
ProCarManuals.com

Relay and Control Unit Locations

Rear Bulkhead

PGM-FI MAIN RELAY
THROTTLE VALVE CONTROL

MOTOR RELAY

Wire colors: BLK,

YEL/BLK, GRN/RED,

and WHT/BLU

DASH LIGHTS

BRIGHTNESS

CONTROL UNIT
TRANSMISSION CONTROL

MODULE (TCM) (A/T)

PULSE UNIT (M/T)

ABS INDICATOR LIGHT

RELAY

Wire colors: BLU/WHT,

BLK, YEL/BLK, BLU/WHT
TCS CONTROL UNIT

FAN CONTROL

UNIT

ECMProCarManuals.com

INTERLOCK CONTROL

UNIT (A/T)

RETRACTABLE HEADLIGHT

CONTROL UNIT
FUEL PUMP RELAY

Wire colors: YEL, RED,

BLK/YEL, and BLK/REDProCarManuals.com

Relay an d Contro l Uni t Location s
Engine Compartmen t
REAR WINDOW DEFOGGE RRELAY
ENGIN E COMPARTMEN TFAN RELA Y (A/T )Wire colors : YEL/BLK ,
BLU/RED , WHT/GRN ,
an d WHT/BL U
ENGINE COMPARTMEN TFUSE/RELAY BO X
IGNITIO N CONTRO L
MODUL E (ICM )
SPARK PLU G VOLTAG E
DETECTIO N MODUL E
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Battery

Component Location Index

BATTERY

Type: 80D26L (A/T)

70D23L (M/T)

CHECK INDICATOR

HEAT SHIELD

Replacement

1. Remove the spare tire and the spare tire holder.

2. Disconnect both the negative cable and positive cable from the battery.

3. Remove the battery holder, then take out the battery.

SPARE TIRE
BATTERY HOLDER

SPARE TIRE HOLDERProCarManuals.com