2006 ACURA CSX lock

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Rapid brake pad wear, vehicle vibration
(after a long drive), or high, hard brake pedal
YES
NO
YES
NO
YES
NO YES
NO
YES
NO
19-5
Symptom Troubleshooting
NOTE: Make sure that the caliper pins are installed
correctly.
Upper caliper pin B and lower caliper pin A are different.
If the pins are installed in the wrong location, it will
cause vibration, uneven or rapid pad wear, and
possibly uneven tire wear. For proper caliper pin
location: Except Type S model (see page 19-22), Type S
model (see page 19-23).
1. Drive the vehicle until the brakes drag or until the pedal is high and hard. This can take 20 or more
brake pedal applications during an extended test-
drive.
2. With the engine running, raise the vehicle on a lift, and spin all four wheels by hand.
Go to step 3.
Look for other causes of pad wear, high pedal,
or vehicle vibration.
3. Turn the ignition switch to LOCK (0), press the brake pedal several times to deplete the vacuum in
the brake booster, and then spin the wheels again
to check for brake drag.
Go to step 4.
Replace the brake booster (see page 19-27).
4. Without removing the brake lines, unbolt and separate the master cylinder from the brake
booster, then spin the wheels to check for brake
drag.
Go to step 5.
Check the brake pedal position switch
adjustment, and pedal free play (see page 19-6). 5. Loosen the hydraulic lines at the master cylinder,
then spin the wheels to check for brake drag.
Go to step 6.
Check the master cylinder reservoir for
contamination in the brake fluid. If you find
contamination, flush the entire brake system of all
contaminated fluid. If the brake fluid is OK, replace
themastercylinder(seepage19-24).
6. Loosen the bleed screws at each caliper, then spin the wheels to check for brake drag.
Check the master cylinder reservoir for
contamination in the brake fluid. If you find
contamination, flush the entire brake system of all
contaminated fluid. If the brake fluid is OK,
disassemble and repair the caliper, on the wheel(s)
with brake drag.
Look for and replace any damaged brake lines.
If all brake lines are OK, replace the ABS or VSA
modulator-control unit: ABS (see page 19-90), VSA
(see page 19-171).
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08/08/21 15:00:49 61SNR030_190_0005
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DYNOMITE -2009-




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Pedal Height
Standard pedal height (with carpet removed): M/T: 153 mm (6.02 in.)
A/T: 158 mm (6.22 in.) Brake Pedal Position Switch Clearance
19-6Conventional Brake Components
Brake Pedal and Brake Pedal Position Switch Adjustment
A
B
B C
90 ° A
15 N·m
(1.5 kgf·m,
11 lbf·ft)B
Lower
the pedal Raise
the pedal
A
B
0.7 mm (0.028 in.)
1. Turn the brake pedal position switch (A) counterclockwise, and pull it back until it is no
longer touching the brake pedal.
2. Pull back the carpet, and find the cutout in the insulation. Measure the pedal height (B) at the
middle of the left side center of the pedal pad (C) to
the floor without the insulation. 3. Loosen the pushrod locknut (A), and screw the
pushrod (B) in or out with pliers until the standard
pedal height from the floor is reached. After
adjustment, tighten the locknut firmly. Do not
adjust the pedal height with the pushrod pressed.
4. Lift up on the brake pedal by hand. Push in the brake pedal position switch until its plunger is fully
pressed (threaded end (A) touching the pad (B) on
the pedal arm). Turn the switch 45 ° clockwise to
lock it. The gap between the brake pedal position
switch and the pad is automatically adjusted to
0.7mm(0.028in.)bylockingtheswitch.Makesure
the brake lights go off when the pedal is released.
5. Check the brake pedal free play.
08/08/21 15:00:50 61SNR030_190_0006
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Pedal Free Play
Inspection
Free play: 1 5 mm (0.04 0.20 in.) Lever locked clicks: 8 to 10
19-719-7
Parking Brake Inspection and
Adjustment
B
A C
Pulled back with
196 N (20 kgf, 44 lbf)
A
1. With the ignition switch in LOCK (0), inspect theplay (A) at the pedal pad (B) by pushing the pedal
by hand. If the brake pedal free play is out of
specification, adjust the brake pedal position switch
(C). If the brake pedal free play is insufficient, it
may result in brake drag. 1. Pull the parking brake lever (A) with 196 N (20 kgf,
44 lbf) of force to fully apply the parking brake. The
parking brake lever should be locked within the
specified number of clicks.
2. If the number of lever clicks is not as specified, adjust the parking brake.
(cont’d)
08/08/21 15:00:50 61SNR030_190_0007
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Pedal Free Play
Inspection
Free play: 1 5 mm (0.04 0.20 in.) Lever locked clicks: 8 to 10
19-719-7
Parking Brake Inspection and
Adjustment
B
A C
Pulled back with
196 N (20 kgf, 44 lbf)
A
1. With the ignition switch in LOCK (0), inspect theplay (A) at the pedal pad (B) by pushing the pedal
by hand. If the brake pedal free play is out of
specification, adjust the brake pedal position switch
(C). If the brake pedal free play is insufficient, it
may result in brake drag. 1. Pull the parking brake lever (A) with 196 N (20 kgf,
44 lbf) of force to fully apply the parking brake. The
parking brake lever should be locked within the
specified number of clicks.
2. If the number of lever clicks is not as specified, adjust the parking brake.
(cont’d)
08/08/21 15:00:50 61SNR030_190_0007
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19-25
Master Cylinder Inspection
RESERVOIR CAP
STRAINER SUBRESERVOIR
MASTER CYLINDER
RESERVOIR SEAL
RESERVOIR TANK RESERVOIR TANK HOSE AD
E
BC
F
UP
1. Remove the master cylinder (see page 19-24).
2. Inspect and note these items:
 Before reassembling, check that all parts are freeof dirt and other foreign particles.
 Do not try to disassemble the master cylinder assembly. Replace the master cylinder assembly
with a new part if necessary.
 Do not allow dirt or foreign matter to contaminate the brake fluid. 3. If the reservoir tank hose was disconnected, install
the reservoir tank (A) and the reservoir tank hose
(B) to the subreservoir (C).
NOTE: Align the ‘‘ ’’ marks (D) on the reservoir tank and subreservoir with the paint marks (E) on the
hose.
 Position the direction of the clamp (F).
4. Install the master cylinder (see page 19-24).
Check for blockage
of vent holes.
Remove accumulated
sediment. Check for leaks,
and damage.
Check for leaks,
rust, and damage.
Check for damage
and deterioration.
Check for damage. Check for damage
and deterioration.
08/08/21 15:01:00 61SNR030_190_0025
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Functional Test
Leak Test
19-26 Conventional Brake Components
Brake Booster Test
A
1. With the ignition switch in LOCK (0), press the
brake pedal several times to deplete the vacuum
reservoir, then press the brake pedal hard, and hold
it for 15 seconds. If the brake pedal sinks, either the
master cylinder is bypassing internally, or the
brake system is leaking. Inspect the brake hoses
and lines (see page 19-37).
2. Start the engine with the brake pedal pressed. If the brake pedal sinks slightly, the vacuum booster is
operating normally. If the brake pedal height does
not vary, do the brake system test (see page 19-4).
1. Press the brake pedal with the engine running, then stop the engine. The brake pedal height should not
vary while pressed for 30 seconds.
 If the pedal height rises, go to step 6.
 If it does not rise, go to step 2.
2. Start the engine and let it idle for 30 seconds. Turn the ignition switch to LOCK (0), and wait
30 seconds. Press the brake pedal s everal times
using normal pressure. When the pedal is first
pressed, it should be low. On consecutive
applications, the pedal height should gradually rise.
Does the pedal rise on each consecutive
application?
 If it rises the booster is OK.
 If it does not rise, go to step 3. 3. Disconnect the brake booster vacuum hose (A) at
the booster. The check valve is built into the hose.
NOTE: If the check valve is faulty, replace the brake
booster vacuum hose/check valve as an assembly.
4. Start the engine, and let it idle. There should be vacuum available.
 If no vacuum is available, the check valve is not working properly. Replace the brake booster
vacuum hose and check valve, and retest.
 Ifthereisvacuum,gotostep5.
5. With the ignition switch in LOCK (0), reconnect the vacuum hose to the brake booster.
6. Start the engine, and then pinch the brake booster vacuum hose between the check valve and the
booster.
7. Turn the ignition switch to LOCK (0), and wait 30 seconds. Press the brake pedal several times
using normal pressure. When the pedal is first
pressed, it should be low. On consecutive
applications, the pedal height should gradually rise.
 If the pedal position does not vary inspect the seal between the master cylinder and booster. If
the seal is OK, replace the brake booster.
 If the pedal position varies, replace the brake booster vacuum hose/check valve as an
assembly.
08/08/21 15:01:00 61SNR030_190_0026
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19-27
Brake Booster Replacement
A
B
6x1.0mm
9.8 N·m
(1.0 kgf·m, 7.2 lbf·ft)
A
B A A
B
C
8x1.25mm
13 N·m
(1.3 kgf·m,
9.4 lbf·ft)
1. Remove the master cylinder (see page 19-24).
2. Disconnect the brake booster vacuum hose (A) from the brake booster (B).
3. Remove the engine wire harness clamps (A).
4. Remove the air cleaner bracket (B). 5. Remove the lock pin (A) and the clevis pin (B), then
disconnect the yoke from the brake pedal.
6. Remove the brake booster mounting nuts (C).
(cont’d)
08/08/21 15:01:00 61SNR030_190_0027
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19-31
E
8x1.25mm
22 N·m
(2.2 kgf·m, 16 lbf·ft)D
8x1.0mm
23 N·m
(2.3 kgf·m,
17 lbf·ft)
A B
C
14. Rotate the caliper piston (A) clockwise into the
cylinder, then align the cutout (B) in the piston with
the tab (C) on the inner pad by turning the piston
back. Lubricate the boot with rubber grease to
avoid twisting the piston boot. If the piston boot is
twisted, back it out so it is positioned properly.
NOTE: Be careful when moving the piston back in
the caliper; brake fluid might overflow from the
master cylinder’s reservoir. If brake fluid gets on
any painted surface, wash it off immediately with
water.
15. Install the caliper. Install the flange bolts (D), and tighten it to the specified torque while holding the
respective caliper pin with a wrench being careful
not to damage the pin boots.
16. Install the brake hose mounting bolt (E).
17. Clean the mating surfaces between the brake disc and the inside of the wheel, then install the rear
wheels. 18. Press the brake pedal several times to make sure
the brakes work.
NOTE: Engagement may require a greater pedal
stroke immediately after the brake pads have been
replaced as a set. Several applications of the brake
pedal will restore the normal pedal stroke.
19. Add brake fluid as needed.
20. After installation, check for leaks at hose and line joints or connections, and retighten if necessary.
Test-drive the vehicle, then recheck for leaks
(see page 19-37).
08/08/21 15:02:05 61SNR030_190_0031
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