2006 ACURA CSX steering wheel


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17-84EPS Components
EPS Control Unit Removal/Installation
A
B
C D
F
E
6x1.0mm
9.8 N·m
(1.0 kgf·m,
7.2 lbf·ft)
1. Do the battery terminal disconnection procedure (see page 22-68).
2. Remove the passenger’s dashboard lower cover (see page 20-102).
3. Remove the passenger’s side kick panel (see page 20-66).
4. Disconnect EPS control unit connectors A (2P), connector B (2P), connector C (2P), and connector D
(28P).
5. Remove the nuts (E) from the EPS control unit (F).
6. Remove the EPS control unit. 7. Install the EPS control unit in the reverse order of
removal.
8. Do the battery terminal reconnection procedure (see page 22-68), and do these tasks:
 Make sure the horn and turn signal switches work properly.
 Make sure the steering wheel switches work properly.
 If the EPS control unit is replaced, the EPS control unit must memorize the torque sensor neutral
position (see page 17-22).
9. After installation, start the engine, and let it idle. Turn the steering wheel from lock-to-lock several
times. Check that the EPS indicator does not come
on.
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Pre-Alignment Checks
Caster Inspection
Tire size (’06-08 models):Except Type S model:Front/Rear: P205/55R16 89H
Type S model: Front/Rear: P215/45R17 87V
Tire size (’09 model): Front/Rear: P215/45R17 87V
Tire Pressure (’06-08 models) (at cold): Except Type S model:Front/Rear: 220 kPa (2.2 kgf/cm , 32 psi)
Type S model: Front/Rear: 230 kPa (2.3 kgf/cm , 33 psi)
Tire Pressure (’09 model) (at cold): Front/Rear: 230 kPa (2.3 kgf/cm , 33 psi) Caster angle: 7 ° 00 ’ 1 °
2
2
2
18-5
Wheel Alignment
The suspension can be adjusted for front camber, front
toe, and rear toe. However, each of these adjustments
are related to each other. For example, when you adjust
camber, the toe will change. Therefore, you must adjust
the front wheel alignment whenever you adjust camber
or toe.
For proper inspection and adjustment of the wheel
alignment, do these checks: 1. Release the parking brake to avoid an incorrect measurement.
2. Make sure the suspension is not modified.
3. Make sure the fuel tank is full, and that the spare tire, the jack, and the tools are in place on the
vehicle.
4. Check the tire size and tire pressure.
5. Check the runout of the wheels and tires (see page 18-9). 6. Check the suspension ball joints (Hold a tire with
your hands, and move it up and down and right and
left to check for movement).
7. Before doing alignment inspections, be sure to remove all extra weight from the vehicle, and no
one should be inside the vehicle (driver or
passengers).
8. Bounce the vehicle up and down several times to stabilize the suspension.
9. Check that the steering column is set at the center tilt and telescopic position.
Use commercially available computerized four wheel
alignment equipment to measure wheel alignment
(caster, camber, toe, and turning angle). Follow the
equipment manufacturer’s instructions. 1. Check the caster angle.
 If the measurement is within specifications,measure the camber angle.
 If the measurement is not within specifications, check for bent or damaged suspension
components.
(cont’d)
08/08/21 14:56:45 61SNR030_180_0005
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Front Toe Inspection/Adjustment
Front toe-in: 0 2 mm (0 0.08 in.)
18-7
B
A
14x1.5mm
90 N·m
(9.2 kgf·m,
67 lbf·ft)A
14x1.5mm
44 N·m (4.5 kgf·m, 33 lbf·ft)
BC
7. Measure the camber angle.
 If the measurement is within specification,measure the toe.
 If the measurement is not within specification, go to step 8.
8. Raise the front of the vehicle, and support it with safety stands in the proper locations (see page
1-11).
9. Remove the front wheels.
10. Replace the damper pinch bolts with the adjusting bolts (A), and adjust the camber angle.
NOTE: Install the washers (B) included adjusting bolt set between the front damper and self-locking nut.
 The camber angle can be adjusted up to 25 ’ (center of tolerance) by replacing one damper
pinch bolt with the adjusting bolt.
 The camber angle can be adjusted up to 50 ’ by replacing both damper pinch bolts with the
adjusting bolts.
11. Tighten the adjusting bolts to the specified torque value.
12. Clean the mating surfaces of the brake disc and the inside of the wheel, then install the front wheels.
13. Lower the vehicle to the ground, and bounce the front of the vehicle up and down several times to
stabilize the suspension.
14. Measure the camber angle. If the camber angle is not within specification, repeat steps 8 through 13
to readjust the camber angle. If the camber
measurement is correct, measure toe-in, and adjust
it if necessary. Use commercially available computerized four wheel
alignment equipment to measure wheel alignment
(caster, camber, toe, and turning angle). Follow the
equipment manufacturer’s instructions.
1. Set the steering column to the middle tilt and center telescopic positions. Center the steering
wheel spokes, and install a steering wheel holder
tool.
2. Check the toe with the wheels pointed straight ahead.
 If adjustment is required, go to step 3.
 If no adjustment is required, go to rear toe inspection/adjustment.
3. Loosen the tie-rod locknuts (A) while holding the flat surface sections (B) of the tie-rod end with a
wrench, and turn both tie-rods (C) until the front toe
is within specifications.
4. After adjusting, tighten the tie-rod locknuts to the specified torque value. Reposition the rack-end
boot if it is twisted or displaced.
5. Go to rear toe inspection/adjustment.
(cont’d)
Replace.Replace.
Replace.
08/08/21 14:56:46 61SNR030_180_0007
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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.
08/08/21 15:00:49 61SNR030_190_0004
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19-96VSA System Components
Component Location Index
DATA LINK CONNECTOR (DLC)
UNDER-HOOD FUSE/RELAY BOX
VSA MODULATOR-CONTROL UNIT UNDER-DASH FUSE/RELAY BOX
LEFT-FRONT WHEEL SPEED SENSOR STEERING ANGLE SENSOR
VSA OFF SWITCHRIGHT-REAR WHEEL SPEED SENSOR
YAW RATE-LATERAL
ACCELERATION SENSOR WHEEL BEARING
(MAGNETIC ENCODER) HUB BEARING UNIT
(MAGNETIC ENCODER)
RIGHT-FRONT WHEEL SPEED SENSOR WHEEL BEARING
(MAGNETIC ENCODER) LEFT-REAR WHEEL SPEED SENSOR
HUB BEARING UNIT
(MAGNETIC ENCODER)
Removal and Installation, page 19-171 Replacement, page 19-173Replacement, page 19-168
Test, page 19-170Replacement, page 19-174
Replacement, page 19-169 Replacement, page 18-18 Replacement, page 18-32
Replacement, page 19-173 Replacement, page 18-18 Replacement, page 19-174
Replacement, page 18-32
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VSA Modulator-Control Unit Inputs and Outputs for 37P Connector (Connector Disconnected)
TerminalnumberWire color Terminal sign Description Signal
19-106VSA System Components
System Description
NOTE: Standard battery voltage is about 12 V.
1 RED CAN-L F-CAN communication circuit
3 BLU STR-D Detects steering angle sensor signal
6 PNK FR-GND Detects right-front wheel speed sensor signal
7 ORN SVCC Power source for the steering angle sensor With ignition switch ON (II): about 5.0 V
8 PUR RL-GND Detects left-rear wheel speed sensor signal
9 LT GRN RR B Detects right-rear wheel speed sensor signal
10 BRN SGND Ground for the steering angle sensor
11 RED FL-GND Detects left-front wheel speed sensor signal
13 WHT FSR B Power source for the fail-safe relay Battery voltage at all times
14 RED MR B Power source for the motor relay Battery voltage at all times
Wire side of female terminals
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TerminalnumberWire color Terminal sign Description Signal
19-107
NOTE: Standard battery voltage is about 12 V.
15 WHT CAN-H F-CAN communication circuit
17 PUR STR-B Detects steering angle sensor signal
19 GRN FR B Detects right-front wheel speed sensor signal
20 YEL RL B Detects left-rear wheel speed sensor signal
21 BLU RR-GND Detects right-rear wheel speed sensor signal
22 WHT FL B Detects left-front wheel speed sensor signal
26 LT BLU K-LINE Communication with HDS
28 GRY IG1 Power source for activating the system With ignition switch ON (II): about battery
voltage
34 GRN STR-A Detects steering angle sensor signal
36 BLK GND Ground for the VSA modulator- control unit Continuity to ground
37 BLK MR-GND Ground for the pump motor Continuity to ground
(cont’d)
08/08/21 15:04:53 61SNR030_190_0107
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System Outline
19-108VSA System Components
System Description (cont’d)
CONTROL UNIT
MODULATOR UNIT VSA MODULATOR-
CONTROL UNIT
Brake pressure
signal
 Solenoid control
 Motor control
Communication via F-CAN
VSA
OFF
SWITCH
PARKING
BRAKE
SWITCH BRAKE
FLUID
LEVEL
SWITCH
WHEEL SPEED SENSOR
 Engine torque control request
 Control mode signal
 VSA control enable/disable
 Throttle open angle signal
 Engine revolution signal
 Brake pedal
position switch signal
 Service check signal
 Gear position signal
Wheel rotation
pulse signal
ECM/PCM
BRAKE
PEDAL
POSITION
SWITCH
GAUGE CONTROL MODULE (TACH)
YAW RATE-LATERAL
ACCELERATION
SENSORSTEERING ANGLE
SENSOR
VSAOFFswitchsignal
 Parking brake switch signal
 Brake fluid level switch signal
 Yaw rate signal
 Lateral acceleration signal Steering angle signal
 Indicator drive signal
 Buzzer request signal*
*: ’09 model
This system is composed of the VSA modulator-control unit, the wheel speed sensors, the steering angle sensor, the
yaw rate-lateral acceleration sensor, and the system indicators in the gauge control module (tach). The VSA
modulator-control unit controls the ABS, EBD, TCS, VSA, and brake assist with the brake pressure of each wheel and
reduces engine torque.
08/08/21 15:04:53 61SNR030_190_0108
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