1991 ACURA NSX light

Replacement
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 cloc k (se e pag e 23-231 ).
2 . Remov e th e tw o screw s behin d th e clock , the n
remov e th e cente r ai r ven t (se e sectio n 20 ).
3 . Remov e th e fou r screws , the n remov e th e cente r
armrest .
4. Tak e ou t th e ashtray .
5 . Remov e th e fiv e screw s an d cente r consol e panel ,
the n disconnec t th e 3- P connecto r an d 4- P connec -
to r fro m th e floo r wir e harness .
ASHTRA Y
CENTERCONSOL EPANEL
CENTE R AI R VEN T
4- P CONNECTO R
3- P CONNECTO R
CENTE R ARMRES T
6. Disconnec t th e therm o fus e cas e fro m th e en d of
th e cigarett e lighte r socket .
7 . Remov e th e rin g nut , an d separat e th e cigarett e
lighte r socke t fro m th e therma l protector .
8 . Whe n installin g th e cigarett e lighter , alig n eac h lu g
o n th e fac e panel , illuminatio n rin g an d cigarett e
lighte r socke t wit h th e groov e in th e hole , the n posi -
tio n th e bul b housin g o n th e therma l protecto r
betwee n th e stop s o n th e cente r consol e panel .
9 . Mak e sur e tha t th e ground , bul b socke t an d therm o
fus e cas e ar e seate d agains t th e cigarett e lighte r
assembly .
CIGARETT ELIGHTERSOCKE T
ILLUMINATIO NRING
FACE PANE L
THERMA L
PROTECTO R
GROUNDWIRE
CENTE R CONSOL EPANELASHTRA Y LIGH T (1. 4 W )
RIN
G NU T
THERM O FUS E CAS E
CIGARETT E LIGHTE R
LIGH T (1. 4 W )
ProCarManuals.com

Cigarette Lighte r
Relay Tes t
1. Remov e th e glov e bo x (se e sectio n 20 ).
2 . Disconnec t th e 4- P connecto r fro m th e cigarett e
lighte r rela y (wir e color s o f 4- P connector : BLU /
GRN, YEL/RED , BRN/YEL , BLK) .
3. 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 connecte 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

Horns

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 ser-

vice.

HORN RELAY

Test, page 23-249

UNDER-HOOD RELAY

BOX A
CABLE REEL

Test, page 23-250
HORN SWITCH
Test, page 23-249
Overhaul, section 17
SECURITY HORNTest, page 23-248
LEFT HORN
Test, page 23-248
RIGHT HORN
Test, page 23-248
SECURITY CONTROL
UNIT
Inpu
t
Test, page 23-320
('94-'96) ('93) ('91-'92)
UNDER-HOOD

FUSE/RELAY BOX

Description

Security Alarm System:

The security alarm system is an anti-theft alarm system. If someone tries to open the trunk, hood or either door without

the ignition key, or if the roof is not fully latched the security control unit senses a signal from the sensors and activates
relays to flash the headlights and sound the horn for about two minutes.ProCarManuals.com

Rear Window Defogger

Switch Replacement (cont'd)

5. Disconnect the 18-P and 10-P connectors.

CAUTION: Be careful not to damage the SRS wire

harness.

6. Remove the six screws, then remove the rear win-

dow defogger-light switch assembly.

10-P CONNECTOR

18-P CONNECTOR
REAR WINDOW DEFOGGER-

LIGHT SWITCH ASSEMBLY

7. If necessary, replace the rear window defogger

switch bulbs.

REAR WINDOW

DEFOGGER SWITCH

BULBS (0.91 W)ProCarManuals.com

Rear Window Defogger

Function Test

CAUTION: Be careful not to scratch or damage the

defogger wires with the tester probe.

1. Check for voltage between the positive terminal

and body ground with the ignition switch and the

defogger switch ON. There should be battery

voltage.

• If there is no voltage, check for:

— Faulty defogger relay.

— An open in the BLK/GRN wire.

• If there is battery voltage, go to step 2.

POSITIVE TERMINAL

NEGATIVE TERMINAL

2. Disconnect the positive terminal, check for con-

tinuity between the negative terminal and body

ground. If there is no continuity, check for an open

in the defogger ground wire.

3. Reconnect the positive terminal, touch the

voltmeter positive lead to the middle of each defog-

ger wire, and the negative lead to the negative ter-

minal. There should be approximately 6 V with the

ignition switch and the defogger switch ON.

• If the voltage is as specified, the defogger wire

is OK.

• If there is battery voltage, the defogger wire is

broken on the negative side.

• If there is no voltage, the defogger wire is

broken on the positive side.
Defogger Wires Repair

To make an effective repair, the broken section must be

no longer than one inch.

1. Lightly scrub the area around the break with fine

steel wool, then clean it with alcohol.

2. Carefully mask above and below the broken section

with cellophane tape.

OPEN

CELLOPHANE

TAPE

DEFOGGER WIRE

3. Using a small brush, apply a heavy coat of silver

conductive paint extending about 1/8" on both

sides of the break. Thoroughly mix the paint before

use. Let it dry for thirty minutes.

PAINT

4. Check for proper operation with a voltmeter (it

should read half of battery voltage at the mid-

point).

5. Apply a second coat of paint in the same way. Let it

dry for three hours before removing the tape.ProCarManuals.com

Cruise Control

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 ser-

vice.

BRAKE SWITCH

Test, page 23-308 ('93-'96) ('91-'92) INDICATOR LIGHT and
DIMMIN
G
CIRCUIT

(In tha gauge assembly)
Bulb Locations, page 23-128
('94-'96) ('91-'93)
MAIN SWITCH

Test, page 23-306 Replacement, page 23-305

SET/RESUME SWITCH

Test, page 23-307 ('93-'96) ('91-'92)
Replacement, page 23-307('93-'96) ('91-'92)
A/T GEAR POSITION

SWITCH

Test, 23-309 ('93-'96) ('91-'92) Replacement, page 23-161 ('93-'96) ('91-'92)

CABLE REEL

Test, page 23-250
Replacement, see section 24
CLUTCH SWITCH (M/T)
Test, page 23-308 ('93-'96) ('91-'92)ProCarManuals.com

Cruise Control

Description

The cruise control system uses mechanically and electri-

cally operated devices to maintain vehicle speed at a

setting selected by the driver.

The ECM receives command signals from the cruise con-

trol main switch and the cruise control set/resume switch.

It receives information about operating conditions from

the brake switch, vehicle speed sensor (VSS), the clutch

switch (with manual transmission), or the A/T gear posi-

tion switch (with automatic transmission). The ECM

sends operational signals to the devices that regulate the

throttle position. The throttle position maintains the

selected vehicle speed. Essentially, the ECM compares

the actual speed of the vehicle to the selected speed.

Then, it uses the result of that comparison to open or

close the throttle.

The brake switch releases the system's control of the

throttle at the instant the driver depresses the brake

pedal. The switch sends an electronic signal to the ECM

when the brake pedal is depressed; the ECM responds

by allowing the throttle to close. The clutch switch (man-

ual transmission) or the A/T gear position switch (auto-

matic transmission) sends a disengage signal to the

ECM that also allows the throttle to close.
Operation:

The cruise control system will set and automatically

maintain any speed above 25 mph (45 km/h). To set,

make sure that the main switch is in the "ON" position.

After reaching the desired speed, press the set switch.

The ECM will receive a set signal and, in turn, will actu-

ate the throttle valve control motor. When the set switch

is depressed and the cruise control system is on, the

"cruise control" ON indicator in the gauge assembly will

light up. You can cancel the cruise control system by

pushing the main switch to "OFF". This erases the set

speed from memory. If the system is disengaged tem-

porarily by the brake switch, clutch switch, or A/T gear

position switch and vehicle speed is still above 25 mph,

press the resume switch. With the resume switch

depressed and the set memory retained, the vehicle

automatically returns to the previous set speed.

For gradual acceleration without depressing the acceler-

ator pedal, push the resume switch down and hold it

there until the desired speed is reached. This will send

an acceleration signal to the ECM. When the switch is

released, the system will be reprogrammed for the new

speed. To slow down, depress the set switch. This will

send a deceleration signal to the ECM causing the car to

coast until the desired speed is reached. When the

desired speed is reached, release the set switch. This

will reprogram the system for the new speed.ProCarManuals.com

Troubleshooting
Cruise Control

NOTE:

• The numbers in the table show the troubleshooting sequence.

• Before troubleshooting:

— Check the No. 5 (15 A) fuse in the under-dash fuse box, and the No. 29 (50 A) and No. 45 (20 A) fuses in the under-

hood fuse/relay box.

— Check that the horns sound.

— Make sure that the headlights go off.ProCarManuals.com