1991 ACURA NSX fuse

Starting Syste m
Starter Tes t
NOTE : Th e ai r temperatur e mus t b e betwee n 5 9 an d
100° F (1 5 an d 38°C ) befor e testing .
Recommende d Procedure :
• Us e a starte r syste m tester .
• Connec t an d operat e th e equipmen t i n accor -
danc e wit h manufacturer' s instructions .
Alternate Procedure :
• Us e th e followin g equipment :
- Ammeter, 0-400 A
- Voltmeter , 0-2 0 V (accurat e withi n 0. 1
volt )
- Tachometer , 0—120 0 rp m
• Hoo k u p voltmete r an d ammete r as shown .
NEGATIV E CABL E
POSITIV ECABLE
1. Disconnec t th e No . 1 3 (3 0 A ) fus e fro m th e engin e
compartmen t fuse/rela y box .
No. 1 3 (3 0 A )FUS E
2. Chec k th e starte r engagement :
Depres s th e clutc h peda l al l th e wa y (M/T ) o r shif t
to positio n (A/T) , an d tur n th e ignitio n
switch to "Star t (III)" . Th e starte r shoul d cran k th e
engine .
NOTE : O n car s equippe d wit h manua l transmis -
sion , th e engin e wil l no t cran k unles s th e clutc h
peda l i s full y depressed .
• I f th e starte r stil l doe s no t cran k th e engine ,
chec k th e battery , batter y positiv e cable ,
groun d an d th e wir e connection s fo r loosenes s
o r corrosion .
• Tes t again .
I f th e starte r stil l doe s no t cran k th e engine ,
bypas s th e ignitio n switc h circui t a s follows :
Unplu g th e connecto r (BLK/WH T wire ) fro m th e
starter . Connec t a jumpe r wir e fro m th e batter y
positiv e (+ ) termina l t o th e solenoi d terminal .
Th e starte r shoul d cran k th e engine .
SOLENOI D TERMINA L
BLK/WHTWIRE
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Ignition Syste m
Idle Spee d Inspectio n
1. Star t th e engine . Hol d th e engin e a t 3,00 0 rp m wit h
no loa d (A/ T in position , M/ T in neutral ) unti l
th e radiator fan come s on , the n le t i t idle .
2 . Connec t a tachomete r t o th e tes t tachomete r
connector .
TEST
TACHOMETE R
CONNECTO R
JUMP STAR TTERMINA Lin th e engin ecompartmen tfuse/relay bo x
Idle Spee d (rpm) :
TEST
TACHOMETE R
CONNECTO R
NOTE: Al l electrica l system s ar e turne d OFF .
3 . Adjus t th e idl e spee d i f necessar y (se e sectio n 11 ).
Ignitio n Contro l Modul e (ICM )
Replacemen t
1. Disconnec t th e 8- P an d 6- P connector s fro m th e ig -
nitio n contro l modul e (ICM) .
2. Remov e th e tw o mountin g bolts , an d slid e th e IC M
ou t towar d th e fron t side .
CAUTION : B e carefu l no t t o damag e th e vacuu m
hose s whe n removin g th e ICM .
MOUNTIN G BOLT S12 N- m11.2 kg-m , 8. 7 Ib-ft )
6-P CONNECTO R
8- P CONNECTO R
G103
SERVIC E LOO P
TACHOMETE
R
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(From pag e 23-100 )
Turn th e ignitio n switc h off .
Chec k fus e No . 2 (1 5 A) .
I s th e fus e OK ?
Disconnec t th e 4- P connecto r
fro m th e alternator .
Tur n th e ignitio n switc h on .
Chec k fo r voltag e in th e YE L wir e
a t th e IG termina l o f th e 4- P con -
nector .
I s ther e batter y voltage ?
Groun d th e WHT/BL U wire at th e
L termina l o f th e 4- P connector .
Doe s th e chargin g syste m ligh t
com e on ?
Perfor m alternator/regulato r tes t(see pag e 23-102 ).
Replac e th e fuse .
L (WHT/BLU )
IG (YEL )
View fro m
termina l sid e
Repai r ope n i n th e YE L wire .
Check fo r a blow n chargin g
syste m ligh t bulb . I f th e bul b is
OK . repai r ope n in th e WHT/BL U
wire.
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Charging System

Troubleshooting

Alternator/Regulator Test

Use the SUN VAT-40 (or equivalent) tester.
2. Attach the negative tester cable and the voltmeter

negative lead to the top of the intake manifold.

LOAD ADJUSTER

(CARBON PILE)
FULL FIELD

LEAD (BLU)

VOLTMETER

NEGATIVE

LEAD (BLK)

VOLT

SELECTOR

FIELD

SELECTOR

INDUCTIVE

PICK-UP

(GRN)
POSITIVE

CABLE (RED)
NEGATIVE

CABLE (BLK)
VOLTMETER

POSITIVE

LEAD (RED)

1. Attach the positive tester cable and the voltmeter

positive lead to the jump start terminal in the

engine compartment fuse/relay box.

POSITIVE CABLE

VOLTMETER

POSITIVE LEAD

JUMP

START

TERMINAL

- ENGINE COMPARTMENT

FUSE/RELAY BOX
VOLTMETER

NEGATIVE LEAD
NEGATIVE CABLE

NEGATIVE MARK

3. Attach the inductive pick-up to the B terminal wire

of the alternator with its arrow pointing away from

the terminal.

NOTE: The arrow must point away from the B

terminal.

INDUCTIVE PICK-UP

ARROW
ALTERNATOR

B TERMINAL

ALTERNATOR
TEST SELECTOR

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Gauge Assembly
Gauge/Terminal Location Index
SRS components are located in this area. Review the SRS component locations, precautions, and procedures in the SRS

section (24) before performing repairs or service.

SPEEDOMETER:

Indicates 60 mph [60km/h] at 1.026 [637]

rpm of the vehicle speed sensor (VSS).
FUEL GAUGE: Gauge test, page 23-134 Sending Unit Test, page 23-135

VOLTAGE METER:
If, with the No. 5 (15 A) fuse

and other gauges

OK, the pointer of the

voltage meter does not move at all,
replace the voltage

meter.

SAFETY INDICATOR SYSTEM:
See page 23-145 ('93-'96) ('91-'92)A/T GEAR POSITION
INDICATOR SYSTEM:
See page 23-156 ENGINE OIL PRESSURE
GAUGE:
Test page 23-137
ENGINE COOLANT TEMPERATURE (ECT) GAUGE:
Gauge Test, page 23-136 Sender Test, page 23-136
TACHOMETER:

Indicates 100 rpm at 300 pulses per minute

of the igniter unit.ProCarManuals.com

NOTE: A shor t t o groun d i n th e OR N wir e ca n b e cause d b y a shor t i n an y componen t connecte d t o it .
Vehicl e Spee d Senso r (VSS ) Tes t
Speedomete r doe s no t work.
Inspec t No . 5 (1 5 A ) fus e in th e
under-das h fus e bo x befor e
testing .
Disconnec t th e 3- P connecto r
fro m th e VSS .
Turn th e ignitio n switc h O N (II) .
Measur e voltag e betwee n th e YE L
wir e termina l an d th e BL K wir e
termina l i n th e harnes s sid e o f th e
3- P connector .
I s ther e batter y voltage ?
Measur e voltag e betwee n th e
OR N an d th e BL K wir e terminals .
I s ther e abou t 5 V ?
(T o page 23-132 ) Vie
w fro m
termina l sid e
, BL K 3- P CONNECTO R
VSS
Is ther e continuity ?
Repai r ope n in th e OR N wir e o r
shor t t o bod y ground .Repair ope n betwee nthe VS S an d groun dG101.
Repai r ope n in th e YE L wir e be -
twee n th e VS S an d under-das h
fuse box .
Chec k fo r continuit y betwee n th eBLK termina l an d bod y ground .
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UNDER-HOOD FUSE/RELAY BOX
UNDER-HOOD RELAY BOX A
DIMMER RELAY
Test, page 23-189
TAILLIGHT RELAYTest, page 23-190
('94-'96) ('91-'93) LEFT HEADLIGHT

RETRACTOR CUT RELAY

Test page 23-190 ('94-'96) ('91-'93)
RIGHT HEADLIGHTRETRACTOR CUT RELAYTest, page 23-190 ('94-'96) ('91-'93)
HEADLIGHT RELAY
Test, page 23-189
RIGHT HEADLIGHT

RETRACTOR RELAY

Test page 23-190
('94-'96) ('91-'93)
RIGHT HEADLIGHT
RETRACTOR MOTOR
Test, page 23-188
Replacement, page

23-186

RIGHT DAYTIME RUNNING
LIGHT (Canada)
Replacement, page, 23-194 HEADLIGHTS

Adjustment, page 23-192

Replacement page 23-163

LEFT DAYTIME RUNNING LIGHT (Canada)
Replacement, page 23-194
LEFT HEADLIGHT
RETRACTOR MOTOR
Test, page 23-186 Replacement, page 23-186 LEFT HEADLIGHT

RETRACTOR RELAY

Test, page 23-190
('94-'96) ('91-'93)ProCarManuals.com

Lighting System

Retractor Motor Replacement

CAUTION:

• Halogen headlights can become very hot in use; do

not touch them or the attaching hardware immediately

after they have been turned off.

• Do not try to replace or clean headlights with the lights

on.

1. Remove the No. 42 (15 A) and No. 43 (15 A) fuses

from the under-hood fuse/relay box.

No. 43
(15A)

FUSE

No. 42
(15A)

FUSE

UNDER-HOOD FUSE/RELAY BOX

2. Turn the knob clockwise to raise the headlight.

CAP

KNOB
3. Remove the two caps, four screws, and cowl clips.

COWL CLIP

CAP

SCREW

4. Slide the headlight housing forward and up.

NOTE: Be careful not to damage the front bumper

or the headlight housing.

HEADLIGHT HOUSING

PROTECTIVE TAPE

5. Disconnect the 6-P connector from the headlight

unit.

6-P CONNECTOR

HEADLIGHT UNIT

6. Remove the four mounting bolts, then remove the

unit.
MOUNTING

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