1991 ACURA NSX light

Lighting/Turn Signal Switch Test
1. Remove the dashboard lower cover and dashboard center panel.
2. If necessary, remove the knee bolster. 3. Disconnect the 16-P connector from the floor wire
harness.

4. Check for continuity between the terminals in each switch position according to the table.

KNEE BOLSTER

DASHBOARD CENTER

PANEL

Lighting/Dimmer/Passing Switch

Turn Signal Switch
DASHBOARD LOWER COVER

View from wire side

16-P CONNECTORProCarManuals.com

Lighting System
Lighting Switch Replacement
CAUTION: All SRS electrical wiring harnesses are covered with
yellow outer insulation.
Before disconnecting the SRS wire harness, install
the short connector on the airbag (see page 23-323). Replace the entire affected SRS harness assembly
if it has an open circuit or damaged wiring.
1. Remove the dashboard lower cover and disconnect the 2-P connectors from the floor wire harness.

2-P

CONNECTORS
DASHBOARD

LOWER COVER

2. Remove the dashboard center panel.

DASHBOARD CENTER
PANEL

3.
Remove
the
tilt
cover.

TILT COVER
4. Remove the steering column lower cover and upper
cover.

5. Disconnect the 16-P connector and 10-P connector.
10-P
CONNECTOR

16-P CONNECTORProCarManuals.com

6. Remove the 4 screws from the lighting switch.

7. Disconnect the 10-P connector from the cancel unit,

then remove the lighting switch.
Lighting Switch Light Bulb Replacement

1. Remove the steering column covers.

2. Remove the 2 screws.

3. Slide the lighting switch out of the housing as shown.

4. Remove the bulb from the lighting switch by turning

the bulb 45°.

BULB (0.91 W)
HOUSING
LIGHTING SWITCH

10-P CONNECTOR

16-P CONNECTOR
CANSEL SWITCH

8. If necessary, remove the cancel unit and cancel switch.

TURN SIGNAL

CANCEL UNIT
TURN SIGNAL

CANCEL SWITCH
LIGHTING SWITCHProCarManuals.com

Glove Box Light

Replacement/Test

1. Remove the glove box lower panel.

2. Remove the 8 screws then pull out the glove box.

3. Disconnect the 2-P connectors then remove the

glove box.

GLOVE BOX LOWER

PANEL
4. Remove the 2 screws from the glove box light.

GLOVE BOX

LIGHT

BULB (3.4W)

5. There should be continuity between the A terminal

and B terminal with a bulb installed. There should

be no continuity when the switch is pushed.

From FUSE

No.38 (15 A)

GLOVE BOX

LID

To GROUND

(401, G402)ProCarManuals.com

Cancel Unit Input Test

Remove the steering column covers.

Disconnect the 10-P connector from the cancel unit.

Make the following input tests at the 10-P connector ter-

minals.

If all tests prove OK, but the turn signal lights fails to

work, replace the cancel unit.

CANCEL UNIT

10-P CONNECTOR

TURN SIGNAL SWITCH

C10(BLK)

C8(BLU/GRN)
C6(GRY)

C4(WHT)
C2(BRN)
View

from

wire

side
C9(GRN/BLK)
C7(BLU/YEL)

C5(PUR)
C3(ORN)
C1(YEL)ProCarManuals.com

CAUTION:
All SRS electrical wiring harnesses are covered with
yellow outer insulation.
Before disconnecting the SRS wire harness, install
the short connector on the airbag (see page 23-323). Replace the entire affected SRS harness assembly
if it has an open circuit or damaged wiring.

SRS MAIN WIRE HARNESS

DEFOGGER SWITCH
Removal, page 23-273

Test, page 23-275

REAR WINDOW DEFOGGER

Function Test, page 23-288

UNDER-DASH FUSE BOX
INTEGRATED

CONTROL UNIT
DEFOGGER

RELAY
ENGINE COMPARTMENT FUSE/RELAY BOX
Description Function:

The rear window defogger is controlled by the integrated control unit.

When the defogger switch in the combination switch is pushed, it sends a signal to the defogger timer in the integrated

contro
l
unit and the defogger stays on for 25 minutes or until the ignition swi\
tch is switched off.

The indicator light in the switch shows when the defogger is on.

Rear Window Defogger
Component
Location Index
ProCarManuals.com

Switch Removal
CAUTION: All SRS electrical wiring harnesses are covered withyellow outer insulation.Before disconnecting the SRS wire harness, install
the short connector on the airbag (see page 23-323). Replace the entire affected SRS harness assembly
if it has an open circuit or damaged wiring.
1. Remove the dashboard lower cover and disconnect the 2-P connectors from the floor wire harness.

2-P

CONNECTORS
LIGHTS-ON CHIME

FOOT LIGHT
DASHBOARD
LOWER COVER

2. Disconnect the 18-P connector from the floor wire harness.
CAUTION: Be careful not to damage SRS wires.

REAR WINDOW

DEFOGGER SWITCH

18-P

CONNECTOR

3.
Remove
the
tilt
cover.

TILT COVER
4. Remove the steering column lower cover and upper

cover.

NOTE: Be careful not to damage the steering column

covers.

5. Remove the 4 screws, then remove the rear window defogger switch and wiper/washer switch assembly.

REAR WINDOW
DEFOGGER

SWITCH

HAZARD

SWITCH

WINDSHIELD WIPER/WASHER
SWITCHProCarManuals.com

Cruise Control

CAUTION:
All SRS electrical wiring harnesses are covered with

yellow outer insulation.
Before disconnecting the SRS wire harness, install

the short connector on the airbag (see page 23-323).
Replace the entire affected SRS harness assembly

if it has an open circuit or damaged wiring.

SRS MAIN WIRE MARNESS
MAIN SWITCH
Test, page 23-295
Replacement, page 23-294
BRAKE LIGHT SWITCH

Test, page 23-308
INDICATOR LIGHT and
DIMMING CIRCUIT
(in the gauge assembly)
Bulb Locations, pages 23-128
CRUISE CONTROL UNIT
Input Test, page 23-292

SET/RESUME SWITCH

Test, page 23-307
Replacement, page 23-307
SHIFT POSITION

CONSOLE SWITCH (A/T)

Test, 23-309
Replacement, page 23-161
CLUTCH SWITCH (M/T)
Test, page 23-308
CABLE REEL

Test, page 23-250
Replacement, page 23-344
Component Location IndexProCarManuals.com