engine ACURA NSX 1991 Service Repair Manual

(G551) '95-'96 Models.
(G401,G402,G551) '93-94 Models or
Brake Switch
Test

1
.
If one of the brake lights does not go on, check that
brake
light bulb in the taillight or the high mount light
2
.
If none of the brake lights 90 on, check the No. 45 (2

0
A) fuse in the under-hood fuse/relay box.
3

.
If the fuse and bubs are OK, disconnect the 4-P con- necto

r
from the brake switch.

4-P CONNECTOR

BRAKE

SWITCH
BRAKE
PEDAL

4. Check for continuity between the B and C terminals. There should be continuity with the brake pedal

pushed.

If there is no continuity, replace the switch or ad-
just pedal height (see section 19).
If there is continuity, but the brake lights do not
go on, inspect for:
Poor ground (G401,G501) '91-'92 Models or
An open in the WHT/GRN or GRN/WHT wire. Faulty brake light failure sensors (see page 23-153). High Mount Brake Light Test
1. Open the trunk lid and engine compartment lid.
2. Disconnect the 2-P connector from the trunk wire
harness.

TRUNK WIRE HARNESS

SIDE WIRE
HARNESS

View from terminal side
View from

terminal

side
3. Connect a voltmeter positive lead to the GRN/WHT terminal and the negative lead to the BLK terminalof the side wire harness side of the connector.
Push the brake pedal, and check for voltage between
the GRN/WHT and the BLK terminals. There should be battery voltage. If there is no voltage, check for:
— Blown No. 45 (20 A) fuse in the under-hood
fuse/relay box.
— An open in the GRN/WHT or BLK wire.
— Faulty brake switch.
If there is battery voltage, go to step 4.
4. Connect battery power to the GRN/WHT terminal and ground to the BLK terminal of the trunk wireharness side of the connector.
Check that all the LEDs of the high mount brake light

go on.

If the high mount brake light does not go on,check for an open in the wires
in the trunk lid.
If the wires in the trunk lid are OK, replace the
high mount brake light.
If some of the LEDs do not go on,
replace the high
mount brake light assembly.
GRN/WHT BLK


BLK GRN/WHTProCarManuals.com

Power Seats
Component Location Index
PASSENGER'S SEAT

DRIVER'S SEAT
RECLINE MOTOR
Test, page 23-273 ('93-'96) ('91-'92) ENGINE COMPARTMENT
FUSE/RELAY BOX
SLIDE MOTOR Test, page 23-281 POWER SEAT SWITCH

Test, page 23-280ProCarManuals.com

Rear Windo w Defogge r
Componen t Locatio n Inde x
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
in th e SR S sectio n 24 befor e performin g repair s o r ser -
vice .
REA R WINDO W DEFOGGE R
TIME R CIRCUI T
(I n th e integrate d contro l unit )
REAR WINDO W DEFOGGE R
Functio n Test , pag e 23-28 8
UNDER-DAS H FUS E BO X
REA R WINDO W
DEFOGGE R RELA YTest, pag e 23-28 6
ENGINE COMPARTMEN T
FUSE/RELAY BO X
Descriptio n
The rea r windo w defogge r i s controlle d b y th e integrate d contro l unit . Whe n th e defogge r switc h i n th e combinatio n
switc h i s pushed , i t send s a signa l t o th e defogge r time r i n th e integrate d contro l unit , an d th e defogge r stay s o n fo r 2 5
minute s (4 0 minute s fo r Canad a models ) o r unti l th e ignitio n switc h is turne d off .
Th e indicato r ligh t i n th e switc h show s whe n th e defogge r i s on .
REA R WINDO W
DEFOGGE R SWITC H
Removal , pag e 23-28 5
Test , pag e 23-28 7
ProCarManuals.com

LEFT FRONT
SIDE MARKER LIGHT Replacement, page 23-195 ROOF LOCK

SWITCH*
1

Test, page 23-154 ('94-'96) ('91-'93)
STARTER CUT
RELAY

Test, page 23-80
RETRACTABLE

HEADLIGHT

CONTROL UNIT
Input Test,

page 23-178 ('94-'96) ('91-'93)
ENGINE COMPARTMENT LID SWITCHTest, page 23-325 ('93-'96) ('91-'92)
TRUNK LATCH SWITCHTest, page 23-323 ('94-'96) ('93) ('91-'92)
TRUNK KEY CYLINDER
SWITCH
Test, page 23-324 ('93-'96) ('91-'92)

TAILLIGHTS

Replacement, page 23-196

LEFT REAR SIDE

MARKER LIGHT
Replacement, page 23-197
DRIVER'S DOOR LOCK
ACTUATOR ASSEMBLY
Test, page 23-323 ('94-'96) ('93) ('91-'92)
Replacement, section 20 A/T GEAR POSITION
SWITCH
(A/T)
Test, page 23-160
('93-'96) ('91-'92)
DRIVER'S DOOR KEY CYLINDER

SWFTCH

Test, page 23-266
Replacement, section 20
SECURITY INDICATOR
Replacement, page 23-324
('93-'96) ('91-'92)
CLUTCH INTERLOCK

SWITCH (M/T)

Test, page 23-80 *1:NSX-T (open top)ProCarManuals.com

From pag e 23-31 2
Indicato r flashes .
0.2 se c O N / 2. 4 se c OF F
Wan t th e syste m disarmed ?
(ARMED)
Trunk opene d b y key ?
Trun k li d switc h O N
Trun k ke y cylinde r switc h
Illegal activit y
1. Doo r i s opene d forcibly . o r
2 . Engin e compartmen t li d i s opened . o r
3. Trun k li d is opene d withou t usin g th e key . o r4. Hoo d is opened . o r
5 . Batter y terminal(s ) is(are ) disconnecte d
an d reconnected . o r
6. Engin e starte r circui t an d batter y circui t ar ebypasse d b y breakin g th e ignitio n switch . o r7. Hood/engin e compartmen t lid/trun k li d opene r o r roo f
releas e leve r (NSX- T "ope n top" ) i s operated . o r
8 . Stere o radio/cassett e playe r i s disconnected .
Alar m
The horn s soun d an d headlights , sid e marke r light s an dtaillight s flas h repeatedl y fo r tw o minutes .Engine starte r circui t interrupted .
About tw o minute s passed ?Want th e syste m disarmed ?
Either doo r i s unlocke d b y usin g th e key .
• Eithe r doo r ke y cylinde r switc h
Th e securit y alar m syste m is disarmed .
Indicato r stop s flashing . (T
o pag e
23-312 )
Rear m th e securit y alar m system ?
ProCarManuals.com

Engine Compartment Lid Switch

Test

1. Open the engine compartment lid.

2. Disconnect the 2-P connector from the engine

compartment lid switch.

3. Check continuity at the switch connector terminals.

• There should be continuity between the terminals

with the lever released (lid open).

• There should be no continuity with the lever

pushed down (lid closed).

LEVER

View from

terminal side
2-P CONNECTOR
Hood Switch Test

1. Open the hood.

2. Disconnect the 2-P connector from the hood

switch.

3. Check continuity at switch connector terminals.

• There should be continuity between the terminals

with the lever released (hood open).

• There should be no continuity with the lever

pushed down (hood closed).

LEVER

2-P CONNECTOR

View from

terminal sideProCarManuals.com

Chassis and Paint Codes

U.S.Model

Vehicle Identification Number
Transmission Number

Paint Code

Paint Code

G-70P

NH-547

NH-565

R-77
Color

Chariot Green Pearl

Berlina Black

Grand Prix White

Formula Red

Vehicle Identification Number

and Federal Motor Vehicle Safety

Standard Certification

Paint Code
Engine NumberProCarManuals.com

CANADA Model

Vehicle Identification Number
Transmission Number

Paint Code

Paint Code

NH-547

G-70P

NH-565

R-77
Color

Berlina Black

Chariot Green Pearl

Grand Prix White

Formula Red

Vehicle Identification Number

and Canadian Motor Vehicle

Safety Standard Certification

Paint Code
Engine NumberProCarManuals.com

Warning/Caution Label Locations

SRS CAUTION LABELS: Refer to page 1-8.
FROZEN

BATTERY CAUTION

BATTERY

CAUTION

RADIATOR BLEED

PLUG CAUTION
AIR CONDITIONING
R-134a CAUTION (U.S.A only)
EXPANSION
TANK CAP

CAUTION

ENGINE COOLANT CAUTION PRECAUTION

SPARK PLUG

CAUTION

TIRE INFORMATION
ABS CAUTION

ABS and BRAKE

FLUID CAUTION

RETRACTABLE

HEADLIGHT CAUTION

EMISSION CONTROL

INFORMATION and

VACUUM HOSE

ROUTING DIAGRAM

(cont'd)ProCarManuals.com

R-Replace I — Inspect After inspection, clean, adjust, repair or replace if necessary.

sec
and

PAGE
NO

19-6 19-8

19-18

19-26

19-4
19-10

19-69
19-41

19-43 19-44

19-62

18-7
17-21

('93-'96)
('94-'96)
17-60('94-'96)
('94-'96)


17-6

18-14

18-30

Under severe driving conditions, service these items more often.
Severe Driving Conditions
Items marked or in the chart indicate you will need some services more frequent-

ly in certain severe driving conditions.

The conditions are:
A: Driving loss than 5 miles (8 km) per trip, or, in freezing temperatures, driving less than 10 miles (16 km) per trip.
B: Driving, on rough or muddy roads, or de-iced roads.

C: Driving in extremely dusty conditions.
D: Extensive idling or driving long periods at slow speeds, such as a delivery vehicle. *6 : Ruler to Base Service Manual ('93 NSX, P/N 61SL002).
Services for Severe Driving Conditions
—
Clean
the air
cleaner
element
every
7,500 miles
(12,000
kml or 6
months
and
replace every
30,000
miles (48,000 km) or 24 months under condition B or C,

— Replace engine oil and oil filter every 3,750 miles (6,000 km) or\
3 months under conditions A, B, C, Dor E.
— Replace transmission oil every 15,000 miles (24,000 km) or 1 7. months under conditions D of E.

— Inspect front brake discs and calipers, and rear brake dises, calipers and pads every 7,500 miles (12,000

km) or 6 months under conditions B, C of D.
— Inspect the power steering system every 7,500 miles (12,000 km) or 6 months under conditions A, B or C.ProCarManuals.com