1991 ACURA NSX light

Lighting System

Retractor Motor Replacement

CAUTION:

• Halogen headlights can become very hot in use; do

not touch them or the attaching hardware immediately

after they have been turned off.

• Do not try to replace or clean headlights with the lights

on.

1. Remove the No. 42 (15 A) and No. 43 (15 A) fuses

from the under-hood fuse/relay box.

No. 43
(15A)

FUSE

No. 42
(15A)

FUSE

UNDER-HOOD FUSE/RELAY BOX

2. Turn the knob clockwise to raise the headlight.

CAP

KNOB
3. Remove the two caps, four screws, and cowl clips.

COWL CLIP

CAP

SCREW

4. Slide the headlight housing forward and up.

NOTE: Be careful not to damage the front bumper

or the headlight housing.

HEADLIGHT HOUSING

PROTECTIVE TAPE

5. Disconnect the 6-P connector from the headlight

unit.

6-P CONNECTOR

HEADLIGHT UNIT

6. Remove the four mounting bolts, then remove the

unit.
MOUNTING

BOLTSProCarManuals.com

Headlight Housing Adjustment

1. Remove the stop bolt caps.

2. Adjust stop bolts A and B.

STOP BOLT CAPS

STOP

BOLT A
STOP

BOLT B

STOP

BOLTC

STOP BOLT

LOCKNUT

3. Adjust stop bolt C in or out until the headlight hous-

ing fits flush with the front fender when the head-

light is down.

STOP BOLT C

HEADLIGHT HOUSING

(cont'd)ProCarManuals.com

Lighting System

Headlight Housing Adjustment

(cont'd)

4. Adjust the retractor motor toward
front
or rear until

the headlight housing fits flush with the front fender

when the headlight is down.

NOTE: Be careful not to damage the headlight

housing.

HEADLIGHT

HOUSING

RETRACTOR

MOTORProCarManuals.com

Lighting Syste m
Retracto r Moto r Tes t
1. Remov e th e retracto r motor .
2 . Tes t th e moto r b y connectin g batter y powe r t o th e
A termina l an d groun d t o th e D terminal .
Th e moto r shoul d ru n continuously .
3 . I f th e moto r doe s no t ru n o r fail s t o ru n smoothly ,
replace it .
NOTE : Th e illustratio n show s th e moto r i n th e con -
ditio n whe n th e headligh t i s full y raised .
RETRACTO RKNOB
View fro mtermina l sid e
BCTermina l
Position
At close d positio n
At ope n positio n
4. Disconnec t th e powe r supply , and chec k fo r con -
tinuit y betwee n th e terminal s accordin g t o th e ta -
bl e whil e turnin g th e retracto r kno b clockwise .
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Headlight Relay Test

1. Remove the headlight relay from the under-hood

fuse/relay box.

2. Check continuity at the relay terminals.

• There should be continuity between the C and D

terminals.

• There should be continuity between the A and B

terminals when power and ground are connect-

ed to the C and D terminals.

• There should be no continuity between the A and

B terminals when power is disconnected.
Dimmer Relay Test

1. Remove the dimmer relay from the under-hood

fuse/relay box.

2. Check continuity at the relay terminals.

• There should be continuity between the F and E

terminals and between the B and C terminals.

• There should be continuity between the A and C

terminals when power and ground are connect-

ed to the E and F terminals.

• There should be no continuity between the A and

C terminals when power is disconnected.ProCarManuals.com

Lighting Syste m
Retracto r Rela y Tes t
1. Remov e th e retracto r rela y (locate d a t th e righ t sid e
o f th e fron t compartmen t area) .
2 . Chec k continuit y a t th e rela y terminals .
• Ther e shoul d b e continuit y betwee n th e E an d F
terminal s an d betwee n th e B an d C terminals .
• Ther e shoul d b e continuit y betwee n th e A an d C
terminal s whe n powe r an d groun d ar e connect -
e d t o th e E an d F terminals .
• Ther e shoul d b e n o continuit y betwee n th e A an d
C terminal s whe n powe r i s disconnected .
Retractor Cut/Tailligh t Rela y Tes t
1. Remov e th e retracto r cu t rela y an d tailligh t relay .
2 . Chec k continuit y a t th e rela y terminals .
• Ther e shoul d b e continuit y betwee n th e C an d D
terminals .
• Ther e shoul d b e continuit y betwee n th e A an d B
terminal s whe n powe r an d groun d ar e connect -
e d t o th e C an d D terminals .
• Ther e shoul d b e n o continuit y betwee n th e A an d
B terminal s whe n powe r i s disconnected .
ProCarManuals.com

Headlights

Description

The light first forms basic pattern A after being interrupt-

ed by the interrupter plate and passed through the con-

vex lens. The interrupter plate determines the form.

The outer lens distributes the light into pattern B.

Screen
CONVEX LENS

INTERRUPTER PLATE

BULB

REFLECTOR

OUTER LENSProCarManuals.com

Headlights

Adjustment

Adjust the headlights to local requirements by turning the adjusters as shown.

NOTE: Be careful not to damage the front fender or the

headlight housing when adjusting.

HEADLIGHT HORIZONTAL

AIM ADJUSTER

HEADLIGHT VERTICAL

AIM ADJUSTER
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