1991 ACURA NSX Service Repair Manual

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
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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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Dash Lights Brightness Control

Control Unit Input Test

1. Disconnect the 7-P connector from the control unit.

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 correct

the cause, then recheck the system.

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

must be faulty; replace it.

RED/GRN

BLK

DASH LIGHTS

BRIGHTNESS

CONTROL UNIT

7-P CONNECTOR
View from wire side

RED/BLK

No. Terminal
Test condition
RED/WHT

Test: Desired result
RED

Possible cause if result is not obtainedProCarManuals.com

Controller Remova l
SRS component s ar e locate d in 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 service .
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 RCOVER
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 .
UPPER COVE R
LOWE R COVE R
5. Disconnec t th e 5- P an d 10- P connector s fro m eac h
switch .
TCS SWITC H
5-P CONNECTO R
DAS H LIGHT S BRIGHTNES S
10- P CONNECTO R CONTROLLE R
6. Remov e th e si x screws , the n remov e th e instrumen t
pane l tri m fro m th e dashboard .
INSTRUMEN T PANE L TRI M
DAS H LIGHT S BRIGHTNES S
CONTROLLE R
7. Remov e tw o screws , the n remov e th e das h light s
brightnes s controlle r fro m th e instrumen t pane l trim .
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