ACURA NSX 1991 Service Repair Manual

Brake Lights

High Mount Brake Light Replacement

CAUTION: Be careful not to damage the high mount

brake light, rear spoiler, and trunk lid.

1. Open the trunk lid.

2. Remove the caps and five screws from the rear

spoiler.

REAR

SPOILER

SCREW

CAP

3. Carefully pull the high mount brake light out of the

rear spoiler, then disconnect the 2-P connector from

the high mount brake light.

REAR SPOILER

2-P CONNECTOR

HIGH MOUNT BRAKE LIGHT

(LED)
Rear Spoiler Replacement

CAUTION: Be careful not to damage the high mount

brake light, rear spoiler, and trunk lid.

1. Open the trunk lid.

2. Remove the six mounting nuts.

REAR

SPOILER

3.
Carefully
lift
the
rear
spoiler assembly
off the
rear

trunk lid.

REAR SPOILER

2-P CONNECTOR (Trunk sub-harness side)

4. Disconnect the 2-P connector from the trunk sub-

harness.ProCarManuals.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

Side Marker/Turn Signal/Hazard Flasher System

Description

To cope with dimensional requirements for the airbag components and to offer better operational feel, the turn signal

lever and the cancel mechanism are separated mechanically, and connected electrically instead.

The system cancels the turn signals electrically, by means of a solenoid, after a turn is made. A sensor mechanism which

consists of cancel cams on the steering shaft, and a pair of switches, is used to monitor the steering shaft's position.

STEERING SHAFT

CANCEL CAM

CANCEL SWITCH

TURN SIGNAL LEVER

SOLENOIDProCarManuals.com

A cam plate is installed around the steering shaft. A pair of switches (A and B) are installed beside it.

When the steering is turned in direction of the arrow, switch A turns on first.

Then switch B turns on.

The cancel unit monitors the on-off sequence of both switches. Once it receives a full set of signals for a right or left

turn, it energizes the solenoid which then moves the turn signal lever back to neutral.

RIGHT TURN SIGNAL

LEFT TURN SIGNALProCarManuals.com

Side Marker/Turn Signal/Hazard Flasher 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 disconnect the 6-P connector.

2. Inspect the connector and socket 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 input

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.
TURN/SIGNAL

HAZARD RELAY

View from

wire side

No. Terminal
Test condition
Test: Desired result
Possible cause if result is not obtainedProCarManuals.com

Cancel Unit Input Test

1. Remove the steering column covers. Disconnect the

10-P connector from the turn signal cancel unit.

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 input

tests at the connector.

— If any test indicates a problem, find and correct

the cause, then recheck the system.

— If all the input tests prove OK, the control unit

must be faulty; replace it.
10-P CONNECTOR
TURN SIGNAL

CANCEL UNIT

No. Terminal
Test condition
Test: Desired result
Possible cause if result is not obtainedProCarManuals.com

Side Marker/Tur n Signal/Hazar d Flashe r Syste m
Hazar d Warnin g Switc h Replacemen t
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
i n th e SR S sectio n 24 befor e performin g repair s o r ser -
vice .
1. Remov e th e dashboar d lowe r cover , an d disconnec t
th e connectors .
2 . Remov e th e dashboar d lowe r pad .
DASHBOAR D LOWE R
COVE R
3. Remov e th e til t cover .
DASHBOAR D LOWE RPAD
TIL T COVE R
4. Remov e th e steerin g colum n covers .
NOTE : B e carefu l no t t o damag e th e steerin g colum n
covers.
UPPER COVE R
LOWE R COVE R
5. Disconnec t th e 20-P , 4-P , an d 5- P connectors .
CAUTION : B e carefu l no t t o damag e th e SR S wir e
harness .
6. Remov e th e si x screws , the n remov e th e hazar d
warning-wipe r switc h assembly .
HAZARDWARNIN GSWITCH
20-P CONNECTO R
ProCarManuals.com

7. Remove the screws, then separate the hazard warn-

ing switch from the other switches.

HAZARD WARNING

SWITCH

8. If necessary, remove the hazard warning switch

bulb.

HAZARD WARNING SWITCH

BULB (0.91ProCarManuals.com

Hazard Warnin g Switc h Tes t
1. Remov e th e dashboar d lowe r cove r (se e pag e
23-220 ).
2 . Disconnec t th e 20- P connecto r fro m th e floo r wir e
harness .
3. Chec k fo r continuit y betwee n th e terminals , i n eac h
switc h position , accordin g t o th e table .
HAZAR D WARNIN G SWITC H
View fro m wir e sid eTermina l N isno t used .
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Dash Light s Brightnes s Contro l
Componen t Locatio n Inde x
TRANSMISSIO NCONTROL MODUL E (TCM )
DASH LIGHT S BRIGHTNES S
CONTRO L UNI T
Inpu t Test , pag e 23-22 4
COMBINATIO N LIGH T SWITC H
Test , pag e 23-18 1
Replacement , pag e 23-18 2
DAS H LIGHT S BRIGHTNES S
CONTROLLERTest, pag e 23-22 6
HEADLIGH T RETRACTO R
SWITC H
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