ACURA NSX 1991 Service Repair Manual

Side Marker/Turn Signal/Hazard Flash System

Turn Signal/Hazard Relay Input Test

Remove the dashboard lower cover.

Remove the turn signal/hazard relay from the left kick

panel then disconnect the 6-P connector.

Make the following input tests at the 6-P connector ter-

minals.

If all tests prove OK, but the relay fails to work, replace

the turn signal/hazard relay.

View from

terminal side
TURN SIGNAL/

HAZARD RELAYProCarManuals.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

Stereo Sound System
Rear Speaker Replacement
1. Remove the center armrest and upper bulkhead panel
(see section 20).

2. Remove the bulkhead panels.

3. Remove the 5 screws, then disconnect the 2-P con-
nector from the floor wire harness.

CENTER BULKHEAD PANEL
R. BULKHEAD

PANEL

2-P CONNECTORL. BULKHEAD
PANEL

4. Remove the 4 screws, then take the rear speaker out
of the center bulkhead panel.

CENTER BULKHEAD PANEL
Foot Well Bass Speaker Replacement

1. Pull the right front floor carpet back.

2. Remove the foot well bass speaker cover.

COVER

CARPET

3. Disconnect the 2-P and 6-P connectors, then remove
the 2 bolts from the EPS power unit. Remove the
foot well bass speaker assembly.

EPS POWER UNIT
FOOT WELL BASS SPEAKER ASSEMBLYProCarManuals.com

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.

Make the following input tests at the connector terminals.

NOTE: Recheck the connections between the

18-P connector and the control unit, then replace

the control unit if all input tests prove OK.

POWER DOOR LOCK

CONTROL UNIT

YEL/RED

WHT/RED

ORN
GRY/WHT2

BLU/RED
BLU/WHT

GRN/YEL2

WHT/YEL
BLK/WHT

BLK/RED

GRN/WHT
GRN/BLU
BLK

GRN/RED
BLU/GRN

View from wire sideProCarManuals.com

CAUTION: To prevent damage to the motor, apply battery voltage only momentarily.ProCarManuals.com

Troubleshooting

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

Rear Window Defogger

Troubleshooting

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