ACURA NSX 1991 Service Repair Manual

Troubleshooting

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

Security Alarm System

Control Unit Input Test

Remove the glove box to disconnect the 22-P connec-

tor and 16-P connector from the control unit.

Make the following input tests at the harness pins.

NOTE:

Recheck the connections between the 22-P con-

nector and the control unit, the 16-P connector

and the control unit, then replace the control unit

if all input tests prove OK.

Several different wires have the same color. They

have been given a number suffix to distinguish

them (for example YEL/GRN1 and YEL/GRN2 are

not the same).

YEL
YEL/GRN2

WHT

BLU
LT GRN/RED

RED/YEL
BLU/RED1
LT GRN/WHT

BLK/YEL

GRN
YEL/BLU

BLU/GRN

BLK/BRN
GRY/WHT
BLU/YEL

BLU/GRN
LT GRN

BLK
View from

wire side
22-P

CONNECTOR
SECURITY

CONTROL UNIT

16-P CONNECTOR

BLU/RED3
BLU/RED2

GRN/WHT
BRN/WHT

BLK/GRN
GRN/RED

GRN/BLU
GRN/YEL1

GRN/YEL2ProCarManuals.com

(cont'd)
Reconnect the 22-P and 16-P connectors to the control unit.ProCarManuals.com

Security Alarm System

Control Unit Input Test (cont'd)ProCarManuals.com

Chassis and Paint Codes
U.S. Model
Vehicle Identification Number

Transmission Number
Paint Code Paint Code

Color
Engine Number
Paint Code
R-77
NH-547

NH-545M
Formula Red
Berlina Black
Sebring Silver Metallic
Vehicle Identification Number
and Federal Motor Vehicle Safety Standard CertificationProCarManuals.com

CANADA Model

Vehicle Identification Number

Transmission Number

Paint Code

Paint Code
Color

R-77

NH-547

NH-545M
Formula Red

Berlina Black

Sebring Silver Metallic

Vehicle Identification Number

and Federal Motor Vehicle

Safety Standard Certification

Engine Number

Paint CodeProCarManuals.com

Label Locations

SRS CAUTION LABELS: Refer to page 1-14.
BATTERY CAUTION
COOLING FAN
CAUTION

RADIATOR BLEED

PLUG CAUTION
AIR CONDITIONER
CAUTION
EXPANSION
TANK CAP
CAUTION

COOLANT

CAUTION • PRECAUTION

SPARK PLUG

CAUTION

TIRE INFORMATION
EMISSION CONTROL

INFORMATION and

VACUUM HOSE
ROUTING DIAGRAM
FAN CAUTION

RETRACTABLE

HEADLIGHT CAUTION
ALB and BRAKE

FLUID CAUTION ALB CAUTIONProCarManuals.com

Warning/Caution Labels

A: CABLE REEL CAUTION A

CAUTION:

BEFORE INSTALLING CABLE REEL

CENTER THE FRONT WHEELS.

ALIGN THE MARKS.

READ SERVICE MANUAL.

B: CABLE REEL CAUTION B

CAUTION:

NO SERVICEABLE PARTS INSIDE; DO NOT

DISASSEMBLE OR TAMPER.

C: STEERING WHEEL WARNING

WARNING

BEFORE INSTALLING STEERING WHEEL:

CENTER THE FRONT WHEELS.

ALIGN THE MARKS. (CABLE REEL)

READ SERVICE MANUAL.

D: BULKHEAD WARNING

WARNING

THIS VEHICLE IS EQUIPPED WITH A DRIVER

AIRBAG AS A SUPPLEMENTAL RESTRAINT

SYSTEM. (SRS)

ALL SRS ELECTRICAL WIRING AND CONNECTORS

ARE COLORED YELLOW.

DO NOT USE ELECTRICAL TEST EQUIPMENT ON

THESE CIRCUITS. TAMPERING WITH OR DISCON-

NECTING THE SRS WIRING COULD RESULT IN

ACCIDENTAL FIRING OF THE INFLATOR OR MAKE

THE SYSTEM INOPERATIVE, WHICH MAY RESULT

IN SERIOUS INJURY.
(SUN VISOR)ProCarManuals.com

E: MODULE WARNING

WARNING

TO PREVENT ACCIDENTAL DEPLOYMENT AND POSSIBLE

INJURY:

ALWAYS INSTALL THE PROTECTIVE SHORT CONNEC-

TOR ON THE INFLATOR CONNECTOR WHEN THE

HARNESS IS DISCONNECTED.

UNDER NO CIRCUMSTANCES SHOULD DIAGNOSIS BE

PERFORMED USING ELECTRICAL TEST EQUIPMENT OR

PROBING DEVICES.

NO SERVICEABLE PARTS INSIDE. DO NOT DISASSEMBLE

OR TAMPER.

STORE THE REMOVED AIRBAG ASSEMBLY WITH THE

PAD SURFACE UP.

FOR SPECIAL HANDLING OR STORAGE REFER TO THE

ACURA SERVICE MANUAL.

DISPOSE OF THE ENTIRE UNIT AS DIRECTED.

F: DRIVER INFORMATION

ALWAYS WEAR YOUR SEAT BELT

THIS CAR IS EQUIPPED WITH A DRIVER AIRBAG AS A

SUPPLEMENTAL RESTRAINT SYSTEM (SRS)

IT IS DESIGNED TO SUPPLEMENT THE SEAT BELT.

BEFORE DRIVING READ LABEL INSIDE THE GLOVE

BOX.

G: SRS UNIT CAUTION

CAUTION

NO SERVICEABLE PARTS INSIDE.

DO NOT DISASSEMBLE OR TAMPER.

DO NOT DROP.

STORE IN A CLEAN, DRY AREA.

H: STEERING COLUMN CAUTION

CAUTION

TO AVOID DAMAGING THE SRS CABLE OR REEL, WHICH

COULD MAKE THE SYSTEM INOPERATIVE, REMOVE THE

STEERING WHEEL BEFORE REMOVING THE STEERING

SHAFT CONNECTOR BOLT.

I: POCKET INFORMATION

DRIVER'S AIRBAG INFORMATION

SUPPLEMENTAL RESTRAINT SYSTEM (SRS) CAN

PROVIDE ADDITIONAL PROTECTION FOR THE DRIVER

IN A FRONTAL COLLISION. A FUNCTIONAL

DESCRIPTION OF THE SRS IS IN YOUR OWNER'S

MANUAL.

THE SYSTEM MUST BE INSPECTED TEN YEARS AFTER

DATE OF MANUFACTURE, AS NOTED ON THE

CERTIFICATION PLATE.

ANY REPAIR, INSPECTION OR NEARBY ACCESSORY

INSTALLTION SHOULD BE DONE BY AN ACURA

DEALER.

IF YOUR SRS INDICATOR:

LIGHTS WHILE DRIVING OR FLASHES;

FAILS TO LIGHT OR STAYS ON AFTER THE IGNITION

IS FIRST TURNED ON:

SEE YOUR AUTHORIZED ACURA DEALER.
J: STEERING WHEEL WARNING

WARNING

TO PREVENT ACCIDENTAL DEPLOYMENT AND POSSIBLE

INJURY:

ALWAYS INSTALL THE PROTECTIVE SHORT CONNEC-

TOR ON THE INFLATOR CONNECTOR WHEN THE

HARNESS IS DISCONNECTED.

K: LABEL

L: INFLATOR LABEL

DANGER CONTAINS SODIUM AZIDE AND POTASSIUM

NITRATE.

CONTENTS ARE EXTREMELY FLAMMABLE.

DO NOT DISMANTLE OR INCINERATE.

DO NOT PROBE WITH ELECTRICAL DEVICES.

M: INFLATOR COVER LABEL

DANGER

EXPLOSIVE/FLAMMABLE SRS

CONTACT WITH ACID, WATER, OR HEAVYMETALS

SUCH AS COPPER, LEAD, OR MERCURY, MAY PRODUCE

HARMFUL AND IRRITATING GASES OR EXPLOSIVE COM-

POUNDS. STORAGE TEMPERATURES MUST NOT EX-

CEED
200°F.
FOR
PROPER
HANDLING,
STORAGE,
AND

DISPOSAL PROCEDURES REFER TO THE ACURA SERVICE

MANUAL, SRS SUPPLEMENT.

POISON

CONTAINS POISONOUS SODIUM AZIDE AND

POTASSIUM NITRATE.

FIRST AID:

IF CONTENTS ARE SWALLOWED, INDUCE VOMITING.

FOR EYE CONTACT, FLUSH EYES WITH WATER FOR 1 5

MINUTES. IF GASES (FROM ACID OR WATER CONTACT)

AIR INHALED, SEEK FRESH AIR. IN EVERY CASE, GET

PROMPT MEDICAL ATTENTION.

KEEP OUT OF REACH OF CHILDREN.ProCarManuals.com

Ignition system

Component Location Index

IGNITION TIMING CONTROL SYSTEM
Troubleshooting, section 11Inspection and setting, page 23-91
Description, page 23-89

RADIO NOISE CONDENSER

Test, page 23-97
SPARK PLUGS (6)

Inspection, page 23-96
TACHOMETER CONNECTOR

(Engine revolution detected)

CYL/CRANK SENSOR
Troubleshooting, section 11 Replacement, section 5
IGNITION COILS (6) Removal, page 23-94 Test, page 23-95
IGNITER UNIT
Replacement, page 23-92Input Test, page 23-93 Troubleshooting, Section 11

SERVICE LOOPProCarManuals.com