ACURA NSX 1991 Service Repair Manual

Ceiling/Courtesy/Trunk Light s
Componen t Locatio n Inde x
CEILIN G LIGH T (*' )Test , pag e 23-20 2Replacement , pag e 23-203
CEILIN G LIGH T (Coupe )
Test, pag e 23-20 1Replacement , pag e 23-20 3 PASSENGER'
S DOO R
COURTES Y LIGH T
Test/Replacement , pag e 23-20 4
PASSENGER' S DOO R SWITC H
Test, pag e 23-20 4
DRIVER' S DOO R
COURTES Y LIGH T
Test/Replacement , pag e 23-20 4
DRIVER' S DOO R SWITC H
Test, pag e 23-20 4
TRUN K LATC H SWITC HTest/Replacement , pag e 23-20 5
TRUN K LIGH T
Test/Replacement , pag e 23-20 5
NSX-T (ope n top ) onl y
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Ceiling Light Test

Coupe:

Check for continuity between the terminals in each switch

position according to the table.

View from terminal sideProCarManuals.com

Ceiling/Courtesy/Trunk Lights

Ceiling Light Test

NSX-T (open top):

Check for continuity between the terminals in each switch

position according to the table.ProCarManuals.com

Ceiling Light Replacement

Coupe:

1. Turn the light switch OFF.

2. Pry off the lens.

3. Remove the two bolts and the housing.

4. Disconnect the 4-P connector from the housing.

4-P

CONNECTOR

HOUSING

BULBS (5Wx2)

LENS
NSX-T (open top):

1. Turn the light switch OFF.

2. Pry off the lens.

3. Remove the two screws and the housing.

4. Disconnect the 3-P connector from the housing.

HOUSING

3-P CONNECTOR

BULB (8 W)

LENSProCarManuals.com

Ceiling/Courtesy/Trunk Light s
Courtes y Ligh t Test/Replacemen t
NOTE: Th e bul b o r len s alon e ca n b e replace d withou t
havin g t o remov e th e doo r panel .
1. Remov e th e doo r pane l (se e sectio n 20 ).
2 . Remov e th e tw o screw s an d th e retaine r plate , the n
remov e th e ligh t fro m behin d th e doo r panel .
3 . Mak e sur e tha t th e bul b i s OK , the n chec k fo r con -
tinuity betwee n th e A an d B terminals . Ther e shoul d
be continuity .
NOTE: Thi s ligh t ha s a built-i n diode . T o ge t a n ac -
curat e reading , eithe r tes t i t wit h a volt-ohmmete r
that compensate s fo r diodes , o r mak e sur e yo u con -
nec t you r tes t lead s t o matc h th e polarit y shown .
DOOR PANE L
RETAINE R
PLAT E
BUL B (3. 4 W )
LEN S
From No.3 4 (15A ) FUS E
To DOO R SWITC H
Door Switc h Tes t
1. Remov e th e doo r pane l (se e sectio n 20 ).
2 . Disconnec t th e 2- P connecto r fro m th e doo r switch .
View fro mtermina l sid e
2-P CONNECTO R
DOOR SWITC H (Buil t int o doo r loc k actuato r assembly )
3. Chec k fo r continuit y a t th e connecto r terminals .
• Ther e shoul d b e continuit y wit h th e switc h
release d (doo r open) .
• Ther e shoul d b e n o continuit y wit h th e switc h
pushe d (doo r closed) .
HOUSIN G
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Trunk Light Test/Replacement

NOTE: The bulb or lens alone can be replaced without

having to remove the trunk side panel.

1. Remove the trunk side panel.

2. Disconnect the 3-P connector from the light housing.

3. Remove the two screws and the retainer plate, then

remove the light from the trunk side panel.

TRUNK SIDE

PANEL

RETAINER

PLATE

BULB (3.4W)

LENS

4. Make sure that the bulb is OK, then check for con-

tinuity between the A and B terminals. There should

be continuity.

NOTE: This light has a built-in diode. To get an ac-

curate reading, either test it with a volt-ohmmeter

that compensates for diodes, or make sure you con-

nect your test leads to match the polarity shown.

From No.34 (15A) FUSE

To LATCH SWITCH
Latch Switch Test/Replacement

1. Open the trunk lid, and remove the trunk rear panel.

2. Disconnect the trunk latch 3-P connector.

TRUNK LATCH

LOCK ROD
TRUNK OPENER

CABLE

3-P CONNECTOR

View from wire side

3. Check for continuity between the A terminal and

body ground with the latch open. There should be

continuity.

4. If you need to remove the latch, disconnect the lock

rod from the latch, then remove the two bolts, and

pull the latch toward the left side.

5. Disconnect the trunk opener cable from the latch.
HOUSINGProCarManuals.com

Back-up Lights
Component Location Index

A/T GEAR POSITION SWITCH
(Back-u
p
light switch)

Test, page 23-160 ('93-'96) ('91-'92).

UNDER-DASH

FUSE BOX BACK-UP LIGHT SWITCH (M/T)

Test, page 23-208 ('93-'96) ('91-'92).

BACK-UP LIGHTS

Bulb replacement, page 23-206ProCarManuals.com

G551 '93-'96 Models )
G551 '93-'96 Models)
Back-up Lights

Test

Manual Transmission:

1
.
If only one back-up right does not go on, check that
bul
b
in the taillight.
2
.
If neither back-up light goes on, check the No. 5 (15

A) fuse in the under-dash fuse box.

3
.
If the fuse and bulbs are OK, disconnect the connec- to

r
from the back-up light switch on the transmis-
sio
n
housing.

BACK-UP
LJGHT SWITCH
25 N·m (2.5 kg-m, 18 Ib-ft)
This washer must
always be replaced
for the switch to
function properly and to prevent oil

leaks.

B(GRN/BLK)
A(YEL)
TRANSMISSION HOUSING

4. Check for continuity between the A (YEL) and B (GRN/BLK) wires with the switch installed. There
should be continuity with the shift lever in reverse.

If there is no continuity, replace the switch.

If there is continuity, but the back-up lights do not
go on, check for:
— Poor ground (G501 '91-'92 Models or
— An open in the YEL or GRN/BLK wire. 4. Check for continuity between the No. 9 and No. 10 terminals. Move the lever back and forth at the

position without touching the push button, and

check for continuity within the range of free play.
If there is no continuity within the range of freeplay, adjust the position of the A/T gear position
switch (see page 23-160) ('93-'96) ('91-'92).
ff there is continuity, but the back-up tights do not go on, check for:
— Poor ground (G501 '91-'92 Models or
— An open in the YEL or GRN/BLK wire.
A/T GEAR POSITION

SWITCH

View from

wire side

Automatic Transmission:

1
.
If only one back-up light does not go on, check that
bul
b
in the taillight.
2
.
If neither back-up light goes on. check the No. 5 (15

A) fuse in the under-dash fuse box.

3
.
If the fuse and bulbs are OK, disconnect the 12-P
connector from the A/T gear position switch (back-
u
p
light switch).
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Brake Lights

Component Location Index

BRAKE SWITCH
Test, page 23-211

HIGH MOUNT BRAKE LIGHT (LED)
LED Replacement, page 23-212
('94-'96) ('91-'93)

Replacement, page 23-212 ('94-'96) ('91-'93) Test, page 23-211

RIGHT TAILLIGHT
Bul
b
Replacement, page 23-196
Failure Sensor Test, page 23-153
LEFT TAILLIGHT Bulb Replacement, page 23-196 Failure Sensor Test, page 23-153
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(G551) '95-'96 Models.
(G401,G402,G551) '93-94 Models or
Brake Switch
Test

1
.
If one of the brake lights does not go on, check that
brake
light bulb in the taillight or the high mount light
2
.
If none of the brake lights 90 on, check the No. 45 (2

0
A) fuse in the under-hood fuse/relay box.
3

.
If the fuse and bubs are OK, disconnect the 4-P con- necto

r
from the brake switch.

4-P CONNECTOR

BRAKE

SWITCH
BRAKE
PEDAL

4. Check for continuity between the B and C terminals. There should be continuity with the brake pedal

pushed.

If there is no continuity, replace the switch or ad-
just pedal height (see section 19).
If there is continuity, but the brake lights do not
go on, inspect for:
Poor ground (G401,G501) '91-'92 Models or
An open in the WHT/GRN or GRN/WHT wire. Faulty brake light failure sensors (see page 23-153). High Mount Brake Light Test
1. Open the trunk lid and engine compartment lid.
2. Disconnect the 2-P connector from the trunk wire
harness.

TRUNK WIRE HARNESS

SIDE WIRE
HARNESS

View from terminal side
View from

terminal

side
3. Connect a voltmeter positive lead to the GRN/WHT terminal and the negative lead to the BLK terminalof the side wire harness side of the connector.
Push the brake pedal, and check for voltage between
the GRN/WHT and the BLK terminals. There should be battery voltage. If there is no voltage, check for:
— Blown No. 45 (20 A) fuse in the under-hood
fuse/relay box.
— An open in the GRN/WHT or BLK wire.
— Faulty brake switch.
If there is battery voltage, go to step 4.
4. Connect battery power to the GRN/WHT terminal and ground to the BLK terminal of the trunk wireharness side of the connector.
Check that all the LEDs of the high mount brake light

go on.

If the high mount brake light does not go on,check for an open in the wires
in the trunk lid.
If the wires in the trunk lid are OK, replace the
high mount brake light.
If some of the LEDs do not go on,
replace the high
mount brake light assembly.
GRN/WHT BLK


BLK GRN/WHTProCarManuals.com