1991 ACURA NSX open hood

From pag e 23-31 2
Indicato r flashes .
0.2 se c O N / 2. 4 se c OF F
Wan t th e syste m disarmed ?
(ARMED)
Trunk opene d b y key ?
Trun k li d switc h O N
Trun k ke y cylinde r switc h
Illegal activit y
1. Doo r i s opene d forcibly . o r
2 . Engin e compartmen t li d i s opened . o r
3. Trun k li d is opene d withou t usin g th e key . o r4. Hoo d is opened . o r
5 . Batter y terminal(s ) is(are ) disconnecte d
an d reconnected . o r
6. Engin e starte r circui t an d batter y circui t ar ebypasse d b y breakin g th e ignitio n switch . o r7. Hood/engin e compartmen t lid/trun k li d opene r o r roo f
releas e leve r (NSX- T "ope n top" ) i s operated . o r
8 . Stere o radio/cassett e playe r i s disconnected .
Alar m
The horn s soun d an d headlights , sid e marke r light s an dtaillight s flas h repeatedl y fo r tw o minutes .Engine starte r circui t interrupted .
About tw o minute s passed ?Want th e syste m disarmed ?
Either doo r i s unlocke d b y usin g th e key .
• Eithe r doo r ke y cylinde r switc h
Th e securit y alar m syste m is disarmed .
Indicato r stop s flashing . (T
o pag e
23-312 )
Rear m th e securit y alar m system ?
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Engine Compartment Lid Switch

Test

1. Open the engine compartment lid.

2. Disconnect the 2-P connector from the engine

compartment lid switch.

3. Check continuity at the switch connector terminals.

• There should be continuity between the terminals

with the lever released (lid open).

• There should be no continuity with the lever

pushed down (lid closed).

LEVER

View from

terminal side
2-P CONNECTOR
Hood Switch Test

1. Open the hood.

2. Disconnect the 2-P connector from the hood

switch.

3. Check continuity at switch connector terminals.

• There should be continuity between the terminals

with the lever released (hood open).

• There should be no continuity with the lever

pushed down (hood closed).

LEVER

2-P CONNECTOR

View from

terminal sideProCarManuals.com

Lubrication Points

For the details of lubrication points and types of lubricants to be applied, refer to the Illustrated Index and various workprocedures (such as Assembly/Reassembly, Replacement, Overhaul, Installation, etc.) contained in each section.

No.

LUBRICATION POINTS

LUBRICANT

Engine
Transmission

Manual

Automatic

Brake Line (including anti-lock brake system)
Clutch Line Shift lever pivots (M/T)Release fork (M/T)Steering gearbox (Manual)
Steering boots Steering column bushings
Steering ball jointsSelect lever (A/T)
Pedal linkage Intermediate shaft
Brake master power pushrod
Trunk hinges Door hinges upper and lower
Door opening detents
Fuel filler lid
Front hood hinges and latch
Clutch master cylinder pushrod
Tilt lever

Parking brake cable end
Throttle cable end Rear hatch latchRetractable headlight pin contact area
Shift cable end and select cable end
Caliper Piston seal, Dust seal, Caliper pin, Piston
Recommended Engine Oil
API Service Grade: SG Fuel Efficient Oil:
Identified by the words, "Energy Conserving II" API Service Grade: SG
SAE viscosity: 10 W—30 recommended
Fuel Efficient Oil:
Identified by the words, "Energy Conserving II"
SAE Viscosity: See chart below.
API Service Grade: SF or SG SAE Viscosity: See chart below.
Honda Premium Formula Automatic Transmission
Fluid or an equivalent DEXRON® II type automatic

transmission fluid

Brake fluid DOT3 or DOT4
Brake fluid DOT3 or DOT4
Silicone grease with molybdenum disulfide
Multi-purpose grease
Silicone grease Recommended Manual Transmission Oil
API Service Grade: SF or SG
transmission oil viscosity forambient temperature ranges
Engine oil viscosity for
ambient temperature rangesProCarManuals.com

Wipers/Washers

Windshield Wiper MotorReplacement
1. Open the hood and remove the cap nuts and the wiper arms. Don't let the wiper arms hit the hood.
2. Remove the windshield lower molding, hood seal
and air scoop by prying off the trim clips and

removing the screws (see page 23-293):
3. Disconnect the 5-P connector from the wiper motor assembly, then remove the two mounting
bolts and the wiper linkage assembly.

WIPER LINKAGE ASSEMBLY

5-P CONNECTOR

4. Remove the three mounting bolts and nut from the wiper linkage assembly and remove the wiper

motor.

NUT
18 N·m(1.8 kg·m, 13 lb-ft)
MOUNTING

BOLTS

8 N·m
(0.8 kg-m,
5.8 Ib-ft)

WIPER LINKAGE

ASSEMBLY

WIPER MOTOR

5. Install the wiper motor assembly in the reverse ord- er of removal. Windshield Wiper/Washer Switch

Replacement

CAUTION:
All SRS wiring harnesses are covered with yellow
outer insulation. Before disconnecting any part of the SRS wire
harness, install the short connectors (see page

24-10).
Replace the entire affected SRS harness assembly if

it has an open circuit or damaged wiring.

SRS MAIN

HARNESS
1, Remove the dashboard lower cover and disconnect the connectors from the floor wire harness.

CONNECTORS
DASHBOARD LOWER

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Idle Control System

Troubleshooting Flowchart
Air Conditioning Signal
This signals the PGM-FI ECU when there is a demand for cooling from the air conditioning system.

Inspection of Air Condition-

ing Signal.

Connect the ECU test harness

between the ECU and connector.

Disconnect "C" connector from
the engine wire harness only, not

the ECU (page 11-21).

Turn the ignition switch ON.
Measure voltage between C3 (+)

terminal and A26 (-) terminal.

Is there approx. 10 V?
Substitute a known-

good ECU and re-

check. If prescribed

voltage is now avail- able, replace the ori-

ginal ECU.
C3

A26

10 V

Turn the ignition switch OFF. Reconnect "C" connector to the
engine wire harness.
Turn the ignition switch ON.
Momentarily connect A15 ter-
minal to A26 terminal several
times.
Is there a clicking noise from the
A/C compressor clutch? Connect the RED/BLU terminal of

the 4P connector on the A/C

clutch relay to body ground. RED/BLU

A 15

Short
A26

View from UNDER-HOODFUSE/RELAY BOX side

Start the engine.
Is there a clicking noise from the
A/C compressor clutch?
See air conditioner in-

spection (section 22).

Repair open in RED/BLU wire be-

tween ECU (A15) and A/C clutch
relay.

Blower switch ON.
(To page 11-73)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

Wipers/Washers

Windshield Wiper Motor
Replacement

1. Open the hood and remove the cap nuts and the wiper arms.
NOTE: Carefully remove the wiper arms so that they
do not touch the hood.
2. Remove the windshield lower molding, hood seal and air scoop by prying off the trim clips and removing
the screws (see page 23-281).
3. Disconnect the 5-P connector from the wiper mo- tor assembly, then remove the 2 mounting bolts and
the wiper linkage assembly.

WIPER LINKAGE ASSEMBLY
5-P CONNECTOR

4. Remove the 3 mounting bolts and 1 nut from the wiper linkage assembly to remove the wiper motor.

NUT
18 N·m (1.8 kg-m, 12.8 Ib-ft)
MOUNTING

BOLTS

8 N·m
(0.8 kg-m.

5.7 Ib-ft)
WIPER LINKAGE
ASSEMBLY
WIPER MOTOR

5. Install the wiper motor assembly in the reverse ord- er of removal. Wiper/Washer 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.

SRS MAIN WIRE HARNESS

1. Remove the dashboard lower cover and disconnect the 2-P connectors from the floor wire harness.

2-P

CONNECTORS
DASHBOAD LOWER

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