1991 ACURA NSX fuse box location

Wiring Locations

EPS CONTROL UNIT

MAIN RELAY BOX

POWER UNIT

TORQUE SENSOR 6-P CONNECTOR/

STEERING WHEEL SPEED SENSOR

4-P CONNECTOR
STEERING GEARBOX

(TORQUE SENSOR/STEERING WHEEL

SPEED SENSOR)
UNDER-DASH FUSE/RELAY BOX
TRANSMISSION CONTROL MODULE (TCM)

22-P CONNECTOR
VEHICLE SPEED SENSOR

(VSS)
ALTERNATOR 4-P CONNECTOR
EPS INDICATOR LIGHTProCarManuals.com

Component Location Index
INDICATOR LIGHT
ACTIVATION LIGHT INDICATOR LIGHT
UNDER-HOOD
FUSE/RELAY BOX
ABS
CONTROL UNIT
STEERING

ANGLE SENSOR
(page 19-138)
TCS SWITCH(page 19-137)
UNDER-DASH FUSE BOX

A/T GEAR POSITION
SWITCH
FAIL-SAFE RELAY

(page 19-137)
ENGINE

COMPARTMENT

FUSE/RELAY BOX

TRANSMISSON

CONTROL

MODULE (TCM)
ENGINE
GROUND
TCS CONTROL
UNIT
ENGINE CONTROL
MODULE (ECM)
ACCELERATOR

PEDAL

ANGLE
SENSOR
THROTTLE

ACTUATOR

THROTTLE
POSITION (TP)

SENSORProCarManuals.com

Relay and Control Unit Locations

Dashboard

CLIMATE CONTROL UNIT
TURN SIGNAL/HAZARD

RELAY

UNDER-DASH FUSE BOX
INTEGRATED

CONTROL UNIT
DASHBOARD

LOWER COVER
STARTER CUT RELAY

Wire colors: BLK/WHT

BLK/WHT, BLU/GRN,

and BLK/BLUProCarManuals.com

Relay and Control Unit Locations

Engine Compartment

REAR WINDOW DEFOGGER

RELAY

ENGINE COMPARTMENT

FUSE/RELAY BOX
ENGINE COMPARTMENT

FAN RELAY

Wire colors: YEL/BLU,

BLK/YEL, WHT/RED,

and WHT/BLU

IGNITION CONTROL

MODULE (ICM)ProCarManuals.com

Power Door Locks
Component Location Index
UNDER-HOOD FUSE/BELAY BOX
Located at right side offront compartment

IGNITION KEY SWITCH

Test, page 23-167

DRIVER'S DOOR LOCK SWITCH

Test
,
page 23-260

DRIVER'S DOOR LOCK
ACTUATOR ASSEMBLY

Test
,
page 23-258Replacement
,
section 20

DRIVER'S DOOR SWITCH

Test, page 23-198

PASSENGERS'S DOOR LOCK
ACTUATOR ASSEMBLY

Test
,
page 23-259Replacement
,
section 20

PASSENGER'S DOOR SWITCH

Test
,
page 23-198

PASSENGER'S DOOR LOCK

SWITCH

Test
,
page 23-260

POWER DOOR LOCK
CONTROL UNIT

Inpu
t
Test,
ProCarManuals.com

Rear Window Defogger
Component Location Index

CAUTION:
Al
l
SRS wiring harnesses are covered with yellow
outer insulation.
Befor
e
disconnecting any part of the SRS wire
harness

,
install the short connectors (see page

24-10).

Replac
e
the entire affected SRS harness assembly if

it
has an open circuit or damaged wiring.
REA
R
WINDOW DEFOGGERTIME
R
CIRCUIT(I
n
the integrated control unit)

SRS MAIN

HARNESS

REA
R
WINDOWDEFOGGE
R
SWITCHRemoval
,
page 23-277


Test, page 23-279

REAR WINDOW DEFOGGER

Functio
n
Test, page 23-288

UNDER-DASH FUSE BOX

REA
R
WINDOWOEFOGGE
R
REALV


Test, page 23-278

ENGIN
E
COMPARTMENT


FUSE/RELAY BOX

Description
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 control unit and the defogger stays on for 25

(40 minutes for Canada models) minutes or until the ignition switch is turned off.
The indicator light in the switch shows when the defogger is on.ProCarManuals.com

Solenoid Flushing
1. Remove the motor relay from the under-hood fuse/relay box. (Location: page 19 - 40)
2. Install the auxiliary window switch (07KAZ — 001000A) into the two motor relay cavities in the
relay box.

MOTOR RELAY

WINDOW SWITCH

07KAZ-001000A

UNDER-HOOD
FUSE/RELAY

BOX

3. Disconnect the four modulator solenoid connec- tors.
4. Bleed any high-pressure fluid from the maintenance bleeder with the Bleeder T-Wrench, then retighten
the bleeder.

BLEEDER T-WRENCH

07HAA - SG00100

or 07HAA - SG00101

SOLENOID HEAD

MAINTENANCE
BLEEDER

8 x
1.25
mm
5.5 N·m
(0.55 kg-m,

4.0 Ib-ft)

POWER

UNIT

ACCUMULATOR/

PRESSURE SWITCH
6. Press the auxiliary switch to run the pump. After
the pump has run for about five seconds, press andrelease the remote starter switch three or four
times to open and close the solenoid. Continue run- ning the pump for about 30 seconds, then release
the auxiliary switch and open and close the solenoid another three or four times.
7. Repeat steps 4-6 for the other two solenoids.
8. Reconnect the solenoids and the pump relay. 9. Connect the ALB Checker and turn the Mode Selec- tor to "1". Start the engine and release the parkingbrake. Push the Start Test button on the ALB

Checker.

10. While the pump is running, place your finger over the top of the solenoid return tube in the modulatorresorvoir and check for leaks. If a solenoid is still leaking, replace the
modulator/solenoid
unit.
REMOTE

STARTER

SWITCH

TO BLK

TERMINAL

TO RED

TERMINAL
FRONT-

RIGHT

FRONT-RIGHT

REAR-LEFT
REAR-RIGHT

5. Connect the RED terminal from one solenoid to the
battery positive (+) terminal with a remote starter
switch. Connect the BLK terminal from the same
solenoid to the battery negative (-) terminal with a
jumper lead as shown.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