1995 ACURA TL parking brake

Rear Brake Pads

Inspection and Replacement

• Never use an air hose or dry brush to clean brake

assemblies.

• Use an OSHA-approved vacuum cleaner to avoid

breathing brake dust.

1. Block the front wheels, loosen the rear wheel nuts

slightly, support the rear of vehicle on safety

stands, then remove the rear wheels.

2. Release the parking brake.

3. Remove the two caliper bolts and the caliper from

the bracket.

CAUTION:

• Thoroughly clean the outside of the caliper to pre-

vent dust and dirt from entering inside.

• Support the caliper with a piece of wire so that

it does not hang from the brake hose.

CALIPER BOLTS

CALIPER

4. Remove the pad shims and brake pads.

OUTER PAD

SHIM

Check for weakness.
INNER PAD

SHIM

Check for weakness.

REAR BRAKE PADS

Check for wear.ProCarManuals.com

Rear Brake Caliper

Disassembly

• Never use an air hose or dry brush to clean brake

assemblies.

• Use an OSHA-approved vacuum cleaner to avoid

breathing brake dust.

• Contaminated brake discs or pads reduce stopping

ability.

CAUTION:

• Do not spill brake fluid on the vehicle; it may damage

the paint; if brake fluid does contact the paint, wash

it off immediately with water.

• To prevent spills, cover the hose joints with rags or

shop towels.

• Clean all parts in brake fluid and air dry; blow out all

passages with compressed air.

1. Remove the caliper shield.

CALIPER SHIELD

2. Remove the lock pin and clevis pin. Remove the

cable clip, and disconnect the cable from the arm.

CLEVIS PIN

CABLE CLIP

Replace.

LOCK PIN

Replace.
PARKING BRAKE

CABLE
ARM

(cont'd)ProCarManuals.com

Rear Brake Caliper

Disassembly (cont'd)

14. Hold the plate with your fingers, and turn the shaft

counterclockwise. Remove the special tool from the

caliper.

LOCKNUTS

PLATE

15. Remove the adjusting bolt.

ADJUSTING SPRING B

Check for weakness.

SPACER

SPRING COVER

Check for damage.
CUP

Replace.

ADJUSTING BOLT

Check for wear and

damage.

16. Remove the spring cover, adjusting spring B, spacer,

bearing A and cup from the adjusting bolt.
17. Remove the sleeve piston, and remove the pin from

the cam in the caliper body.

O-RING

Replace.

PIN

SLEEVE PISTON

Check for wear and

damage.

18. Remove the return spring.

RETURN

SPRING

PARKING LEVER/

CAM ASSEMBLY

Check for damage

CAM BOOT

Replace.

19. Remove the parking lever and cam as an assembly

from the caliper body.

CAUTION: Do not loosen the parking nut with the

cam installed in the caliper body. K the lever and shaft

must be separated, hold the lever in a vise and loosen

the parking nut.

20. Remove the cam boot.ProCarManuals.com

Reassembly

Never use an air hose or dry brush to clean brake assemblies.

Use an OSHA-approved vacuum cleaner to avoid breathing brake dust.

Contaminated brake discs or pads reduce stopping ability.

When reusing the pads. Install them in their original positions to prevent loss of braking efficiency.

CAUTION:

Do not spill brake fluid on the vehicle; It may damage the paint; if brake fluid does contact the paint, wash it off imme-

diately with water.

Clean all parts in brake fluid and air dry; blow out all passages with compressed air.

Before reassembling, check that all parts are free of dust and other foreign particles.

Replace parts with new ones whenever specified to do so.

Make sure no dirt or other foreign matter is allowed to contaminate the brake fluid.

Always use Genuine Honda DOT 3 Brake Fluid. Using a non-Honda brake fluid can cause corrosion and decrease the

life of the system.

NOTE:

Coat piston, piston seal groove, and caliper bore with clean brake fluid.

Replace all rubber parts with new ones whenever disassembled.

: Use recommended silicone greases in the caliper seal set.

: Use recommended rubber grease in the caliper seal set.

8 mm FLANGE BOLT

23 N-m (2.3 kgf-m,

17 Ibf-ft)
RETURN

SPRING

PARKING NUT

27 N-m (2.8 kgf-m, 20 Ibf-ft)

BLEED SCREW

9 N-m (0.9 kgf-m, 6.5 Ibf-ft)

SLEEVE

PISTON CUP

Replace.

ARM

INNER PAD SHIM

RETAINER
CALIPER BODY

PAD SPRING
CIRCLIP

BEARING A

SPACER
PISTON SEAL

Replace.

BRAKE PADS
ADJUSTING

BOLT

PINS
ADJUSTING

SPRING B SPRING

COVER

(Black color)
PISTON

CALIPER

BRACKET

OUTER PAD SHIM

CALIPER BOLTS

23 N-m (2.3 kgf-m, 17 Ibf-ft)

CALIPER BRACKET MOUNTING BOLTS

38 N-m (3.9 kgf-m, 28 Ibf-ft)
PISTON BOOT

Replace.
SILICONE

GREASE
O-RING

Replace.
PIN

CAM
LEVER

CAM

BOOT

Replace,
SPRING

WASHER

PIN BOOTS

Replace.ProCarManuals.com

Rear Brake Caliper

Reassembly (cont'd)

1. Pack all cavities of the needle bearing with the rec-

ommended rubber grease in the caliper seal set.

2. Coat a new cam boot with recommended rubber

grease in the caliper seal set, and install it in the

caliper body.

RETURN

SPRING

PARKING NUT

27 N-m (2.8 kgf-m

20 Ibf-ft)

SPRING

WASHER

RUBBER GREASE
LEVER

CAM

CAM BOOT

Replace.

3. Apply recommended rubber grease in the caliper

seal set to the pin contacting area of the cam, and

install the cam and lever assembly into the caliper

body.

4. Install the return spring.

CAUTION:

When the cam and lever were separated, be sure

to assemble them before installing the cam in

the caliper body. Install the lever and spring

washer, apply locking agent to the threads, and

tighten the parking nut while holding the lever

with a vise.

Avoid damaging the cam boot since it must be

installed before the cam.

When installing the cam, do not allow the cam

boot lips to turn outside in.
5. Install the pin in the cam.

HOLES

O-RING

Replace.

PINS

PIN

SLEEVE PISTON

6. Install a new O-ring on the sleeve piston.

7.

8.
Install the sleeve piston so the hole in the bottom of

the piston is aligned with the pin in the cam, and

two pins on the piston are aligned with the holes in

the caliper.

Coat a new cup with recommended rubber grease

in the caliper seal set, and install it with its groove

facing the bearing A side of the adjusting bolt.

SPRING

COVER

ADJUSTING

SPRING B

RUBBER GREASE

9.
Fit the bearing A, spacer, adjusting spring B and

spring cover on the adjusting bolt, and install them

in the caliper cylinder.
BEARING A

ADJUSTING

BOLT

CUP

Replace.
SPACERProCarManuals.com

Parking Brake Cable

Inspection and Replacement

CAUTION: The parking brake cables must not be bent or distorted. This will lead to stiff operation and premature cable

failure.

CLEVIS PIN

CLIP

Replace.

BRACKET

PARKING BRAKE CABLE

Check for faulty movement.

PARKING BRAKE LEVER

Check for smooth

operation.

PARKING BRAKE SWITCH

(Sliding surface)

Disconnect the parking brake cable from the lever on the

caliper by removing the lock pin and clevis pin, and

remove the cable from the arm by removing the clip.

PARKING BRAKE CABLE

CLIP

Replace.
LEVER

CLEVIS PIN
LOCK PIN

Replace.

LOCK PIN
LOCK PIN

Replace.

ADJUSTING

NUT

EQUALIZERProCarManuals.com

Anti-lock Brake System (ABS)

Features/Construction (cont'd)

Wheel sensor:

The wheel sensor is a contactless type that detects the rotating speed of a wheel. It consists of a permanent magnet and

coil. When the gear pulsers attached to the rotating parts of each wheel turn, the magnetic flux around the coil in the

wheel sensor alternates, generating voltages with frequency in proportion to wheel rotating speed. These pulses are sent

to the ABS control unit, and the ABS control unit identifies the wheel speed.

WHEEL SENSOR

COIL PERMANENT MAGNET

at HIGH SPEED

at LOW SPEED

GEAR PULSER

GEAR PULSER

ABS control unit:

The ABS control unit consists of a main function, which controls the operation of the anti-lock brake system, and sub-func-

tion, which controls the pump motor and "self-diagnosis".

For safety, the main function consists of two systems, and the ABS control unit activates the solenoid valve only when the

outputs of the two systems agree with each other.

The main function section of the ABS control unit performs calculations on the basis of the signals from each wheel

sensor, and controls the operation of the anti-lock brake system by activating the solenoid valves in the modulator unit

for each front brake and for the two rear brakes. The ABS has individual control of the front wheels and common con-

trol ("Select low") for the rear wheels. "Select low" means that the rear wheel that would lock first (the one with the

lowest resistance to lock-up) determines the ABS activation for both rear wheels.

The sub-function section has the fail-safe function that monitors the system operation by inputting the brake switch,

parking brake switch and pressure switch signals, and stops the anti-lock brake system when it detects an abnormality

in the system. It also has a self-diagnosis function and the pump motor control function.

WHEEL SENSORS
ABS CONTROL UNIT

RIGHT-FRONT WHEEL

LEFT-FRONT WHEEL

RIGHT-REAR WHEEL

LEFT-REAR WHEEL

BRAKE SWITCH

PARKING BRAKE SWITCH
MAIN FUNCTION

• BASIC ABS

FUNCTION CONTROL

SUB-FUNCTION

• SELF-DIAGNOSIS FUNCTION

• FAIL-SAFE FUNCTION

• PUMP MOTOR CONTROL

PRESSURE SWITCH

PUMP MOTOR RELAY
MODULATOR UNIT

SOLENOID

SOLENOID

SOLENOID

FRONT FAIL - SAFE RELAY

REAR FAIL - SAFE RELAY

PUMP MOTORProCarManuals.com

Pump motor control:

The ABS control unit monitors the brake fluid pressure in the accumulator by the pressure switch ON/OFF signals. The

ABS control unit turns the pump on when the pressure in the accumulator drops, and stops the pump when the pressure

rises to the specified value.

If the pressure does not reach the specified value after the motor has operated continuously for a specified period, the

ABS control unit stops the motor and activates the ABS indicator light.

Self-diagnosis function:

The self-diagnosis function, provided in the sub-function of the ABS control unit, monitors the main system functions by

constantly transmitting the data between the two Central Processing Units (CPUs). When an abnormality is detected, the

ABS control unit turns the ABS indicator light on and stops the ABS, although the basic brake system continues to operate

normally.

When the ABS control unit detects an abnormality with the ABS and turns the ABS indicator light on, the diagnostic trou-

ble code (DTC), which shows the problem part or unit, is recorded in the control unit. The DTC can be read by the blinking

frequency of the ABS indicator light.

Fail-safe function:

When an abnormality is detected in the ABS control sys-

tem self-diagnosis, the solenoid operations are suspend-

ed by turning off the two fail-safe relays. This discon-

nects the ground circuits of all the solenoid valves to

prevent ABS operation.

Under these conditions, the braking system functions

just as an ordinary one.

Fail-safe relay:

The fail-safe relay's terminal side contact is normally

open. When there is continuity at the relay coil, the fail-

safe relay is closed, thereby connecting the ground cir-

cuit to the solenoid valve.

ABS indicator light:
SOLENOID VALVE

BAT

REAR FAIL-SAFE RELAY

FRONT FAIL-SAFE RELAY

The ABS control unit turns the ABS indicator light on when one or more of the following abnormalities are detected. This

is only a partial list.

When the operating time of the motor in the power unit exceeds the specified period.

When vehicle running time exceeds 30 seconds without releasing the parking brake.

When absence of speed signals from any of the four wheel sensor is detected.

When the activation time of all solenoids exceeds a given time, or an open circuit is detected in the solenoid system.

When solenoid output is not detected in the simulated ABS operation when the engine is started or the vehicle is driven.

To check the indicator light bulb, the light is activated when the ignition switch is first turned on. The light goes off after

the engine is started if there is no abnormality in the system.
ABS CONTROL UNITProCarManuals.com