warning light ACURA NSX 1991 Service Repair Manual

Warning/Caution Labe l Location s
SRS CAUTIO N LABELS : Refe r t o pag e 1- 6
FROZE NBATTER Y CAUTIO N
AI R CONDITIONIN G
R-134 a CAUTIO N
(U.S.A. only )
ENGIN E COOLAN TCAUTION • PRECAUTIO N
ABS CAUTIO N
ABS an d BRAK EFLUID CAUTIO N
RETRACTABL EHEADLIGHT CAUTIO N
EMISSION CONTRO L
INFORMATIO N an d
VACUU M HOS E
ROUTIN G DIAGRA M
BATTERYCAUTION
RADIATO R BLEE DPLUG CAUTIO N
EXPANSIO NTANK CA PCAUTIO N
SPAR K PLU G
CAUTIO N
TIRE INFORMATIO N
ProCarManuals.com

Switches

The lighting system is controlled by five switches and the turn signal cancel unit.

HEADLIGHT SWITCH TURN SIGNAL CANCEL UNIT
HAZARD WARNING SWITCH

TURN SIGNAL and DIMMER SWITCH

TURN SIGNAL CANCEL SWITCHProCarManuals.com

Side Marker/Turn Signal/Hazard Flasher System
Component 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.

TURN SIGNAL INDICATOR LIGHTS(In the gauge assembly)
Gauge Assembly, page 23-125 HAZARD WARNING SWITCH
Removal, page 23-220
Test, page 23-221
HEADLIGHT SWITCH
Test, page 23-181
Replacement, page 23-182
TURN SIGNAL/HAZARD RELAY
Input Test, page 23-218

UNDER-DASH FUSE BOX TURN SIGNAL SWITCH

Test, page 23-181

Replacement, page 23-182 TURN SIGNAL CANCEL UNIT

Input Test, page 23-219

SIDE MARKER FLASHER CIRCUIT

(In the integrated control unit)

Input Test, page 23-168 ('94-'96) ('91-'93)ProCarManuals.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

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
EMISSION CONTROL

INFORMATION and

VACUUM HOSE

ROUTING DIAGRAM
RETRACTABLE

HEADLIGHT CAUTION
ABS and BRAKE

FLUID CAUTION ABS CAUTION

(cont'd)ProCarManuals.com

12. Install the knee bolster and pad.
13. Connect the foot well light harness and light-on
warning chime to the dashboard lower panel, then
install the dashboard lower panel.

KNEE

BOLSTER

KNEE BOLSTER

PAD

DASHBOARD
LOWER PANEL
14. Install the steering wheel and airbag assembly to the column (see page 17-10).ProCarManuals.com

Side Marker/Turn Signal/Hazard Flash System

Turn Signal/Hazard Relay Input Test

1. Remove the dashboard lower cover. Remove the turn signal/hazard relay from the left kick panel, then dis-
connect the 6-P connector.
2. Inspect the connector terminals to be sure they are all making good contact.
If the terminals are bent, loose or corroded, repair
them as necessary, and recheck the system.
If the terminals look OK, make the following in-
put tests at the connector. If any test indicates a problem, find and cor-
rect the cause, then recheck the system. If all the input tests prove OK, the control unit
must be faulty; replace it.
View from
wire side
TURN/SIGNAL

HAZARD RELAY

1

2

3

4
5

6
B

(RED/WHT)

SR

(BLU/YEL)

SL

(BLU/GRN)

SR

(BLU/YEL)

SL

(BLU/GRN)

LR

(GRN/YEL)

LL

(GRN/BLU)
Test condition
Under all conditions.

Ignition switch ON

and turn signal
switch in right position.

Ignition switch ON

and turn signal switch in left
position.
Connect the B termi-

nal to the LR

terminal.
Connect the B termi-

nal to the LL

terminal.
Test: Desired result
Check for continuity to ground:
There should be continuity.
Check for voltage to ground:
There should be battery voltage.
Check for voltage to ground:
There should be battery voltage.
Check for voltage to ground:
There should be battery voltage.
Right turn signal lights should come

on.

Left turn signal lights should come

on.
Possible cause if result is not obtained
Poor ground (G401, G402).
An open in the wire.
Blown No. 46 (10 A) fuse.
An open in the wire.
Blown No. 5 (10 A) fuse.
Faulty turn signal switch or cancel

unit.

An open in the wire.
Faulty hazard warning switch.
An open in the wire.
Blown bulb.
Faulty side marker flasher circuit.
Poor ground (G301, G401, G402,

G551).

An open in the wire.
Blown bulb.
Faulty side marker flasher circuit.
Poor ground (G301, G401, G402,

G551).

An open in the wire.

E

(BLK)

Terminal

No.

Under all conditions.
Hazard warning
switch ON.ProCarManuals.com

Hazard Warning Switch Light Bulb

Replacement

1. Remove the steering column covers.
2. Remove the screws from the hazard warning and wiper switches.

HAZARD

WARNING SWITCH
3. Remove the two screws from the back of switch. HAZARD WARNING
SWITCH
4. Slide the hazard warning switch out of the housing
as shown.

5. Remove the bulb from the hazard warning switch by
turning it 45°.
HAZARD WARNING SWITCH
HOUSING BULB (0.91W) Hazard Warning Switch Test
1. Remove the dashboard lower cover (see page
23-126).

2. Disconnect the 18-P connector from the floor wire harness.
3. Check for continuity between the terminals in each
switch position according to the table.

HAZARD WARNING SWITCH
18-P CONNECTOR
View from wire side M: Not usedProCarManuals.com

E: MODULE WARNING
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.

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.
K: LABEL
WARNING

TO PREVENT ACCIDENTAL DEPLOYMENT AND POSSIBLE

INJURY:

ALWAYS INSTALL THE PROTECTIVE SHORT CONNEC-

TOR ON THE INFLATOR CONNECTOR WHEN THE

HARNESS IS DISCONNECTED.

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

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 15

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.
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

I: POCKET INFORMATION
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.

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.ProCarManuals.com

Troubleshooting

Anti-lock Brake System Indicator Light

Temporary Driving Conditions:
1. The anti-lock brake system indicator light will come
on and the control unit memorizes the problem
under certain conditions.
NOTE: Problem codes are explained on pages
19 - 46.
The tire(s) adhesion is lost due to excessive cor-
nering speed.
Problem codes: 5, 5-4, 5-8. The vehicle loses traction when starting from a
stuck condition on a muddy, snowy, or sandy

road.
Problem code: 4-1, 4-2, 4-4, 4-8. When the parking brake is applied for more than
30 seconds while the vehicle is being driven.
Problem code: 2. The vehicle is driven on extremely rough road.
The anti-lock brake system is OK, if the anti-lock brake system indicator light goes off after the
engine is restarted.
ANTI-LOCK BRAKE SYSTEM INDICATOR LIGHT
2. If you receive a customer's report that the anti-lock brake system indicator light sometimes comes on,
check the system using the ALB checker to confirm
whether there is any trouble in the system.

See page 19 - 41.

3. The anti-lock brake system indicator light will come on and the control unit will store a problem codewhen there is insufficient battery voltage to the
control unit. An example would be when the bat-
tery is so weak that the car must be jump-started. After the battery is sufficiently recharged, the anti-lock brake system indicator light will work normally
after the engine is stopped and restarted.
However, after recharging the battery, the problem
code must be cleared from the control unit's
memory by disconnecting the ALB 2,3 (No. 32)
fuse for at least 3 seconds. Anti-lock Brake System Indicator Light Circuit:
CAUTION: Use only the digital multimeter to

check the system.

1. The indicator light does not go on when the ignition switch is turned on.
Check the following items. If they are OK, check
the control unit connectors. If not loose or disconnected, install a new control
unit and recheck:
Blown anti-lock brake system indicator light
bulb.
Open circuit in YEL wire between No. 5 (10 A)
fuse and gauge assembly. Open circuit in BLU/WHT wire between gauge
assembly and control unit. Loose component grounding of the control unit
to the body.
2. The anti-lock brake system indicator light remains ON after the engine is started, however the anti-lock brake system indicator light does not blink any
code or sub-code. Check the following items:
Loose or poor connection of the wire harness at

the control unit.

Faulty ALB 2,3 (No. 32) fuse.
Open circuit in WHT/BLK wire between ALB 2,3(No. 32) fuse and control unit.
Open circuit in YEL/BLK wire between fuse No.

4 (1 5 A) and control unit.

Short circuit in BLU/WHT wire between gauge
assembly and control unit. Open circuit in WHT/BLU wire between alter-

nator and control unit.

If the problem is not found substitute a known-good
control unit and recheck whether the warning light re-
mains ON.ProCarManuals.com