2006 ACURA CSX brake light

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) Component Inspections:Component Procedure Also check for
Brake pedal sinks/fades when braking
Brake System Test
19-4 Conventional Brake Components
Brake System Inspection and Test
Inspect the brake system components listed. Repair or replace any parts that are leaking or damaged.










Master Cylinder Look for damage or signs of fluid leakage at:
Reservoir tank, subreservoir or master
cylinder body.
Lines, reservoir tank hose and grommets,
and their joints.
Between master cylinder and booster. Bulging seal at reservoir cap. This is a
sign of fluid contamination.
Brake Hoses Look for damage or signs of fluid leakage at: Line joints and banjo bolt connections.
Hoses and lines, also inspect for twisting or
damage. Bulging, twisted, or bent lines.
Caliper Look for damage or signs of fluid leakage at: Piston seal.
Banjo bolt connections.
Bleed screw. Seized or sticking caliper pins.
ABS or VSA
Modulator-control
Unit Look for damage or signs of fluid leakage at:
Line joints.
Modulator-control unit.
1. Set the parking brake, and start the engine, then turn off the A/C. Allow the engine to warm up to normal operating temperature (radiator fan comes on twice).
2. Attach a 50 mm (2 in.) piece of masking tape along the bottom of the steering wheel, and draw a horizontal reference mark across it.
3. With the transmission in neutral (M/T) or P or N (A/T), press and hold the brake pedal lightly (about the same pressure needed to keep an A/T-equipped vehicle from creeping), then release the parking brake.
4. While still holding the brake pedal, hook the end of the tape measure behind the brake pedal, then pull the tape up to the steering wheel. Note the measurement between the brake pedal and the reference mark on the steering
wheel.
5. Apply steady pressure to the brake pedal for 3 minutes.
6. Watch the tape measure.  If the measurement increases 10 mm (0.39 in.) or less, the master cylinder is OK.
 If the measurement increases more than 10 mm (0.39 in.), replace the master cylinder.
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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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Adjustment
19-8Conventional Brake Components
Parking Brake Inspection and Adjustment (cont’d)
A
A
B
1. Remove the center console panel (see page 20-92).
2. Release the parking brake lever fully.
3. Loosen the parking brake adjusting nut (A).
4. Raise the rear of the vehicle, and support it with safety stands in the proper locations (see page
1-11).
5. Remove the rear wheels. 6. Make sure the lever (A) on the rear brake caliper
contacts the stop pin (B).
NOTE: The lever will only contact the stop pin when
the parking brake adjusting nut is loosened.
7. Clean the mating surfaces between the brake disc and the inside of the wheel, then install the rear
wheels.
8. Pull the parking brake lever 1 click.
9. Tighten the parking brake adjusting nut until the parking brakes drag slightly when the rear wheels
are turned.
10. Release the parking brake lever fully, and check that the parking brakes do not drag when the rear
wheels are turned. Readjust if necessary.
11. Make sure the parking brake lever is within the specified number of clicks (8 to 10 clicks).
12. Install the center console panel (see page 20-92).
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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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EBD Features
19-60ABS Components
System Description (cont’d)
REAR WHEEL
BRAKE PRESSURE
With EBD under HEAVY LOAD
at REAR WHEELS
With EBD under LIGHT LOAD
at REAR WHEELS
Without EBD
FRONT WHEEL BRAKE PRESSURE
The electronic brake distribution (EBD) feature helps control vehicle braking by adjusting the rear brake force in
accordance with the rear wheel load before the ABS operates. Based on the wheel speed sensor signals, the control
unit uses the modulator to control the rear brakes individually. When the rear wheel speed is less than the front wheel
speed, the ABS modulator-control unit retains the current rear brake fluid pressure by closing the inlet valve in the
modulator. As the rear wheel speed increases, and approaches the front wheel speed, the ABS modulator-control unit
increases the rear brake fluid pressure by momentarily opening the inlet valve. This whole process is repeated very
rapidly. While this is happening, kickback may be felt at the brake pedal.
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EBD Features
TCS Features
19-110VSA System Components
System Description (cont’d)
REAR WHEEL
BRAKE PRESSURE
With EBD under HEAVY LOAD
at REAR WHEELS
With EBD under LIGHT LOAD
at REAR WHEELS
Without EBD
FRONT WHEEL BRAKE PRESSURE
ANTI-POWER of BRAKE FORCE
TOTAL TRACTION DRIVING POWER
TOTAL TRACTION
BRAKE FORCE
SLIPPERY ROAD SURFACE
NORMAL ROAD SURFACE
The electronic brake distribution (EBD) feature helps control vehicle braking by adjusting the rear brake force in
accordance with the rear wheel load before the ABS operates. Based on the wheel speed sensor signals, the control
unit uses the modulator to control the rear brakes individually. When the rear wheel speed is less than the front wheel
speed, the VSA modulator-control unit retains the current rear brake fluid pressure by closing the inlet valve in the
modulator. As the rear wheel speed increases, and approaches the front wheel speed, the VSA modulator-control unit
increases the rear brake fluid pressure by momentarily opening the inlet valve. This whole process is repeated very
rapidly. While this is happening, kickback may be felt at the brake pedal.
When a drive wheel loses traction on a slippery road surface and starts to spin, the VSA modulator-control unit applies
brake pressure to the spinning wheel, and sends an engine torque control request to the ECM/PCM to slow the
spinning wheel and keep traction.
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S

pecial Tools Required
20-78 Interior Trim
Trim Removal/Installation - Rear Shelf Area
A F
astener Locations
: Clip
A
(White)
’06 model, 6
’07-09 models, 7
’06 model
’07-09 models A
A
A
A AAA
A
A
A
AA
A
KTC trim tool set SOJATP2014
SRS components are located in this area. Review the
S
RS component locations (see page 24-11) and the
precautions and procedures (see page 24-13) before
doing repairs or service.
NOTE:  Put on gloves to protect your hands.
 Take care not to bend or scratch the rear shelf or the trim.
 Use the appropriate tool from the KTC trim tool set to avoid damage when removing components.
1. Remove these items:  Rear seat cushion (see page 20-133)
 Rear seat-back (see page 20-131)
 Rear door opening seal, as needed (see step 3 onpage 20-68)
 C-pillar trim, both sides (see step 3 on page 20-75)
2. From the trunk compartment, disconnect the high mount brake light connector (A). 3.

From the trunk compartment, release the six or
seven white clips (A) by tapping on them.
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20-79
AB
C
A
B
C Fastener Locations
: Clip, 4(White)
A
B
C D
FG
E
B
D G
A
D
E G
4. Release the hook (A) by pushing in on the detents
(B) on the rear shelf (C), then lift up on the front
edge of the shelf at each detent. 5. Lift the rear shelf (A) upward to detach the
remaining four clips, and release the hooks (B) of
the high mount brake light from the rear shelf.
Release the pin (C) from the holes on the body.
6. Release each anchor rod (D) out through the hole in the rear shelf, and pull both rear seat belts (E) and
rear center seat belt (F) out through the slits (G) in
the rear shelf.
7. Install the shelf in the reverse order of removal, and note these items:
 If the clips are damaged or stress-whitened, replace them with new ones.
 When installing the rear shelf, slip the rear seat belt through the slit and the rear center seat belt
into the lid opening in the rear shelf.
 Push the clips and the hooks into place securely.
 Make sure the high mount brake light connector is connected securely.
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