1991 ACURA NSX Service Repair Manual

Function Test

NOTE: Before testing, remove the left door panel, then

disconnect all connectors from the door panel.

10-P CONNECTOR

DOOR PANEL

View from wire side

NOTE: Check the No. 4 (15A) fuse in the under-dash

fuse box before testing.

One or both inoperative:

1. Check for voltage between the YEL/BLK1 terminal

and body ground with the ignition switch ON (II).

There should be battery voltage.

• If there is no voltage, check for an open in the

YEL/BLK1 wire.

• If there is battery voltage, go to step 2.
2. Check for continuity between the BLK terminal and

body ground.

There should be continuity. If there is no continui-

ty, check for:

• An open in the BLK wire.

• Poor ground (G401, G402, G403).

Left inoperative:

Connect the YEL/BLK1 terminal to the YEL/RED terminal

and the YEL/WHT (or YEL/BLK2) terminal to body

ground with jumper wires.

The
left mirror should
tilt
down
(or
swing left) when
the

ignition switch is turned ON (II).

• If the
mirror
does
not
tilt
down
(or
does
not
swing

left), check for an open in the YEL/WHT (or

YEL/BLK2) wire between the left door mirror and the

switch.

If the wire is OK, check the mirror.

• If the mirror doesn't move either direction, repair the

YEL/RED wire.

• If the mirror operates properly, check the mirror

switch.

Right inoperative:

Connect the YEL/BLK1 terminal to the BLU/GRN ter-

minal and the YEL/WHT (or BLU/BLK) terminal to the

body ground with jumper wires.

The right mirror should tilt down (or swing left) when

the ignition switch is turned ON (II).

• If the
mirror does
not
tilt
down
(or
does
not
swing

left), remove the right door panel, and check for an

open in the YEL/WHT or BLU/BLK) wire between the

right door mirror and the switch.

If the wire is OK, check the right door mirror.

• If the mirror doesn't move in either direction, repair

the BLU/GRN wire.

• If the mirror operates properly, check the mirror

switch.ProCarManuals.com

Power Mirror s
Switch Remova l
1. Remov e th e lef t doo r panel , the n disconnec t al l
connector s fro m th e doo r pane l (se e sectio n 20 ).
2 . Remov e th e thre e screws , the n remov e th e mirro r
switc h fro m th e armrest .
DOOR PANE L
SCREW S
MIRROR SWITC H
Switch Tes t
1. Remov e th e powe r mirro r switc h fro m th e armrest .
2 . Chec k fo r continuit y betwee n th e terminal s i n eac h
switc h positio n accordin g t o th e table .
Mirro r Switc h
BULB(0.91 W)
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Door Mirro r Tes t
1. Remov e th e doo r panel , an d carefull y remov e th e
plasti c cove r (se e sectio n 20 ).
2 . Disconnec t th e powe r mirro r 3- P connector .
3 . Tes t actuato r operation :
TIL T UP : Connec t batter y powe r t o th e No .
3 termina l an d groun d t o th e No . 2
terminal .
TIL T DOWN : Connec t batter y powe r t o th e No .
2 termina l an d groun d t o th e No . 3
terminal .
SWIN G LEFT : Connec t batter y powe r t o th e No .
2 termina l an d groun d t o th e No . 1
terminal .
SWIN G RIGHT : Connec t batter y powe r t o th e No .
1 termina l an d groun d t o th e No . 2
terminal .
4. I f th e mirro r fail s t o operat e properly , replac e it .
3-P CONNECTO R
View fro m termina l sid e
Doo r Mirro r Replacemen t
1. Remov e th e doo r panel , an d carefull y remov e th e
plasti c cove r (se e sectio n 20 ).
2 . Disconnec t th e 3- P connector .
DOOR MIRRO R
MOUNTIN G NUT S
3. Remov e th e tw o mountin g nut s whil e holdin g th e
mirror .
4 . Instal l i n th e revers e orde r o f removal .
3-P CONNECTO R
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Power Mirror s
Door Mirro r Actuato r Replacemen t
1. Remov e th e mirro r an d actuato r assembl y fro m th e
housin g (se e sectio n 20 ).
2 . Plac e th e mirro r o n a flat , padde d surface . Pul l u p
o n th e spring-loade d lug , an d remov e th e rol l pin .
LUG
ROL L PI N
3. Pul l th e actuato r awa y fro m th e mirror . I f th e actua -
tor shaft s d o no t com e of f wit h th e actuator , pr y
the m ou t o f thei r sockets .
ACTUATO R
MIRROR
4. Discar d th e actuato r an d shafts . 5
. Se t th e ne w actuato r o n th e bac k o f th e mirro r wit h
th e lu g protrudin g throug h th e middle . Pul l u p o n
th e lug , an d instal l th e rol l pi n remove d i n ste p 3 .
6 . Pres s th e actuato r shaft s int o th e socket s o n th e
mirror .
PIN(Alig n wit h slot )
SLO T
7. Instal l th e mirro r an d actuato r assembl y i n th e
housin g (se e sectio n 20 ).
8 . Tes t th e mirror' s operation .
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Power Doo r Lock s
Componen t Locatio n Inde x
UNDER-HOO D FUSE/RELA Y BO X
Locate d a t righ t sid e o f
fron t compartmen t
IGNITION KE Y SWITC H
Test , pag e 23-17 1POWE R DOO R LOC KCONTRO L UNI T
Inpu t Test , pag e 23-26 4
PASSENGER' S DOO R SWITC H
Test , pag e 23-20 4
DRIVER' S DOO R LOC K SWITC H
Test , pag e 23-26 8
DRIVER'S DOO R SWITC H
Test, pag e 23-20 4
DRIVER' S DOO R LOC K
ACTUATO R ASSEMBL Y
Test , pag e 23-26 6
Replacement , sectio n 2 0 PASSENGER'
S DOO R LOC K
ACTUATO R ASSEMBL YTest, pag e 23-26 7
Replacement , sectio n 2 0
PASSENGER' S DOO R LOC KSWITC HTest, pag e 23-26 8
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Troubleshooting

NOTE: The numbers in the table show the troubleshooting sequence.ProCarManuals.com

Power Door Locks

Control Unit Input Test

Remove the glove box, then disconnect the 18-P con-

nector from the control unit.

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.

POWER DOOR LOCK

CONTROL UNIT

View from wire sideProCarManuals.com

No. Wire
Test condition
Test: Desired result
Possible cause if result is not obtained

CAUTION: To prevent damage to the motor, connect power and ground only momentarily.ProCarManuals.com