1991 ACURA NSX brake sensor

Transmission

Installation (cont'd)
27. Install the 3 transmission mounting bolts, and the 2 transmission housing mounting bolts.
28. Install the starter motor and tighten the starter motor mounting bolts.
29. Install the ATF cooler.
30. Connect the transmission ground cable, starter motor cable, solenoid valve wire connectors and vehicle
speed sensor (VSS) wire connectors.
31. Install the control box and connect the control box connectors.
32. Install the air cleaner housing.
33. Install the strut bar.
TORQUE: 39 N .
m (3.9 kg-m, 28 Ib-ft)
Corrosion resistant bolt/nut 34. Refill the transmission with ATF.
35. Connect the battery positive (+) and negative (-) ca- ble to the battery.
36. Inspect the rear camber (see section 18).
37. Start the engine. Set the parking brake, and shift the transmission through all gears three times. Check forproper shift cable adjustment.
38. Check the ignition timing (see section 23).
39. Let the engine reach normal operating temperature (the cooling fan comeson) with the transmission in or position, then turn it off and check the
fluid level.
40. Road test as described on page 14-88.
TRANSMISSION HOUSING MOUNTING BOLT
12 x
1.25
mm

75 N .
m (7.5 kg-m, 54 Ib-ft)
CONTROL BOX

8x1.25 mm
18 N .
m
(1.8 kg-m,
13 Ib-ft)
TRANSMISSION MOUNTING BOLT
10 x 1.25mm

60 N .
m (6.0 kg-m, 43 Ib-ft)
STARTER MOTOR
MOUNTING BOLT
12 x 1.25mm

75 N .
m
(7.5 kg-m,
54 Ib-ft)ProCarManuals.com

Front Suspension

Hub Replacement
1. Loosen the wheel nuts slightly.
2. Raise the front of car and support on safety stands in proper locations (see section 1).
3. Remove the wheel nuts and wheel. NOTE: Before installing the wheel, clean the
mating surfaces of the brake disc and inside of the
wheel.

CENTER

CAP

WHEEL NUT
110 N .
m

(11 kg-m, 80 lb-ft)

4. Remove the brake hose mounting bolts.

FRONT BRAKE HOSE

BRAKE HOSE MOUNTING BOLTS

Corrosion resistant bolt/nut
5. Remove the wheel sensor from the knuckle and
front lower control arm.
Do not disconnect the wheel sensor.
Be careful when installing the sensors to avoid
twisting wires. 10N.
m
(1.0 kg-m, 7 lb-ft)

WHEEL

SENSOR

22 N.
m

(2.2 kg-m, 16 Ib-ft)

Corrosion resistant bolt/nut

6. Remove the caliper bracket mounting bolts and hang the caliper assembly to one side.
CAUTION: To prevent accidental damage to the
caliper assembly or brake hose, use a short piece of

wire to hang the caliper assembly from the

undercarriage.

CALIPER BRACKET MOUNTING BOLTS
110 N .
m (11 kg-m, 80 Ib-ft)

10 N .
m

(1.0 kg-m. 7 Ib-ft)

Corrosion resistant bolt/nut

22 N
.
m (2.2 kg-m, 16 Ib-ft)
NOTE:ProCarManuals.com

Rear Suspension
Hub Replacement
1. Remove the center cap, then pry the spindle nut
lock tab away from the spindle and loosen the nut.
2. Raise the car and support it with safety stands (see section 1).

WHEEL NUT
110 N.m

(11 kg-m, 80 Ib-ft)

SPINDLE NUT

26 x 1.5 mm
Replace.

NOTE: After tightening, use a drift
to stake spindle nut shoulder against the driveshaft.

3. Remove the rear wheels.

NOTE: Before installing the wheel, clean the
mating surfaces of the brake disc and inside of the wheel.
4. Remove the spindle nut.
5. Remove the wheel sensor from the knuckle and rear lower control arm.

NOTE:
Do not disconnect the wheel sensor.
Be careful when installing the sensors to avoid
twisting wires.

22 N .
m

(2.2 kg-m,

16 Ib-ft)

WHEEL SENSOR
Corrosion resistant bolt/nut
6. Remove the banjo bolt and disconnect the brake
hose, then remove the brake hose clamp from the
knuckle.
CAUTION: Avoid spilling brake fluid on painted,
plastic or rubber surfaces as it can damage the

finish;

Wash spilled brake fluid off immediately with clean
water.

BANJO BOLT

35 N .
m (3.5 kg-m, 25 Ib-ft)
BRAKE HOSE

WASHER

Replace.
BOLT 6 mm
10 N .
m (1.0 kg-m, 7 Ib-ft)

Corrosion resistant bolt/nut

7. Remove the rear caliper by removing the mounting
bolts.

CALIPER BRACKET MOUNTING BOLT
110 N .
m (11 kg-m, 80 Ib-ft)

CALIPER ASSEMBLY

Corrosion resistant bolt/nut

10 N
.
m

(1.0 kg-m. 7 Ib-ft)ProCarManuals.com

Dashboard

Component Removal/Installation (cont'd)
SRS wire harnesses are routed near the dashboard. CAUTION:
LEFT DASH
SENSOR PASSENGER'S

AIRBAG
RIGHT DASH
SENSOR

SRS MAIN

HARNESS
SRS UNIT

Center console panel removal:

NOTE:

Disassemble in numbered sequence.
ASHTRAY
CENTER CONSOLE PANEL

Disconnect the

connectors.

SRS
UNIT
Lift up the parking

brake lever.

Installation is the reverse of the removal procedure. NOTE: Make sure the connectors are connected properly.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

23-328).
Replace the entire affected SRS harness assem-
bly if it has an open circuit or damaged wiring.
Take care not to scratch the dashboard, center console panel and related parts.Do not drop the screws inside the dashboard.
Remove the center armrest (see page 20-49), clock and center air vent (see page 20-50).ProCarManuals.com

Blown No. 5 (10 A) fuse
(In the under-dash fuse box)
Blown No. 34 (15 A) fuse
(In the under-dash fuse box)
Safety indicator input
Safety indicator (Diodes)Brake light failure sensorDoor switch
Trunk latch switch
Retractable headlight control unit
(see page 23-174)
Poor ground
Open circuit, loose or disconnected
terminalsProCarManuals.com

Cruise Control

Description

The cruise control system uses mechanically and elec-

trically operated devices to maintain vehicle speed at a

setting selected by the driver.

The cruise control unit receives command signals from

the cruise control main switch and the cruise control

set/resume switch. It receives information about

operating conditions from the brake switch, ECM, vehi-

cle speed sensor (VSS), the clutch switch (with manual

transmission), or the A/T gear position switch (with

automatic transmission). The cruise control unit sends

operational signals to the devices that regulate the

throttle position. The throttle position maintains the

selected vehicle speed. Essentially, the control unit

compares the actual speed of the vehicle to the

selected speed. Then, the control unit 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 con-

trol unit when the brake pedal is depressed; the control

unit responds by allowing the throttle to close. The

clutch switch (manual transmission) or the A/T gear

position switch (automatic transmission) sends a

disengage signal to the control unit that also allows the

throttle to close.
Operation:

The cruise control system will set and automatically

maintain any speed above 30 mph (45 kph). To set,

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

After reaching the desired speed, press the set switch.

The cruise control unit will receive a set signal and, in

turn, will actuate the cruise control actuator. 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

removes power to the control unit and 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 30 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 ac-

celerator pedal, push the resume switch down and hold

it there until the desired speed is reached. This will send

an acceleration signal to the control unit. 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 control unit

causing the car to coast until the desired speed is reach-

ed. When the desired speed is reached, release the set

switch. This will reprogram the system for the new

speed.ProCarManuals.com

11. Remove the parking brake cable holders from the rear beam rod.
12. Remove the rear beam rod.
13. Remove the front exhaust pipe A.

Corrosion resistant bolt/nut
SELF-LOCKING NUT
Replace.

GASKET

Replace.
SELF LOCKING NUT

Replace.

14. Remove the parking brake cable holder and the Anti-lock Brake sensor wire clamp.
1 5. Loosen the ball joint nut, then separate the toe control arm from the knuckle using the special tool (see section 18).
16. Remove the damper fork bolt.
17. Remove the ball joint nut using the special tool and separate the lower control arm from the knuckle (see section 18).
18. Remove the right driveshaft from the intermediate shaft.
Corrosion resistant bolt/nut
SELF-LOCKING NUT

Replace.
DAMPER FORK BOLT

PARKING

BRAKE

CABLE
DRIVESHAFT ANTI-LOCK

BRAKE

SENSOR

WIRE/CLAMP
LOWER

CONTROL
ARM
CASTLE NUTTOE CONTROL ARM

(cont'd)

CASTLE

NUTProCarManuals.com

Transmission Assembly

Removal (cont'd)

19. Remove the intermediate shaft heat cover and the intermediate shaft mounting bolts.
20. Pry the intermediate shaft out of the differential. Pull and remove it.
NOTE:

Coat all precision finished surfaces with clean engine oil or grease. Tie plastic bags over the driveshaft ends.

INTERMEDIATE SHAFT

SUPPORT BASE

SET RING
Replace.

INTERMEDIATE SHAFT

21. Remove the parking brake cable holder and the Anti-lock Brake sensor wire clamp.
22. Scribe a reference mark on the flange of the adjusting bolt, adjusting cam and lower control arm.
23. Loosen the ball joint nut, then separate the toe control arm from the knuckle using the special tool (see section 18).
24. Remove the damper fork bolt.
25. Remove the bolts and lower control arm from the side beam.
26. Remove the left driveshaft from the differential.
27. Pry the driveshaft out of the differential. Pull and remove it.
NOTE:
Coat all precision finished surfaces with clean engine oil or grease.
Tie plastic bags over the driveshaft ends.

INTERMEDIATE SHAFT

MOUNTING BOLT

INTERMEDIATE SHAFT

HEAT COVER

DAMPER FORK BOLT
TOE CONTROL ARM

LOWER CONTROL ARM
ADJUSTING

BOLT
ADJUSTING

CAM


SET RING

Replace.
ProCarManuals.com