2006 ACURA CSX gearbox

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Steering
Steering
EPS (Electrical Power Steering) Components
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Special Tools
. 17-2
Component Location Index . 17-3
Steering Wheel Rotational Play Check . 17-4
Power Assist Check . 17-4
Steering Linkage and Gearbox Inspection . 17-5
Steering Wheel Removal . 17-6
Steering Wheel Disassembly/Reassembly . 17-7
Steering Wheel Installation . 17-8
Column Cover Removal and Installation . 17-9
Steering Column Removal and Installation . 17-10
Steering Column Inspection . 17-14
Steering Lock Replacement . 17-14
Rack Guide Adjustment . 17-15
Tie-rod End Ball Joint Boot Replacement . 17-16
Gearbox Mount Cushion Replacement . 17-17
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Component Location Index
. 17-18
General Troubleshooting Information . 17-19
Memorizing the Torque Sensor Neutral Position . 17-22
DTC Troubleshooting Index . 17-23
Symptom Troubleshooting Index . 17-25
System Description . 17-26
Circuit Diagram . 17-30
DTC Troubleshooting . 17-33
Symptom Troubleshooting . 17-60
EPS Motor Removal and Installation . 17-63
Steering Gearbox Removal and Installation . 17-65
Rack End Removal and Installation . 17-79
Rack Guide Removal/Installation . 17-83
EPS Control Unit Removal/Installation . 17-84
08/08/21 14:53:09 61SNR030_170_0002
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17-3
Component Location Index
DRIVER’S AIRBAG
POWER STEERING GEARBOX STEERING COLUMN
STEERING WHEELReplacement,
page 24-188
Rack Guide Adjustment, page 17-15
Tie-rod End Ball Joint Boot Replacement, page 17-16
Gearbox Mount Cushion Replacement, page 17-17
EPS Component, page 17-18 Column Cover Removal and Installation,
page 17-9
Removal and Installation, page 17-10
Inspection, page 17-14
Steering Lock Replacement, page 17-14 Removal, page 17-6
Disassembly/ Reassembly,
page 17-7
Installation, page 17-8
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µµ
Rotational play: 0 10 mm (0 0.39 in.)
17-417-4 Steering
Steering Wheel Rotational Play
Check
Power Assist Check
1. Turn the front wheels to the straight ahead position.
2. Measure how far you can turn the steering wheel
left and right without moving the front wheels.
 If the play is within the limit, the steering gearbox and steering linkage are OK.
 If the play exceeds the limit, adjust the rack guide (see page 17-15). If the play is still excessive after
rack guide adjustment, inspect the steering
linkage and steering gearbox (see page 17-5). NOTE: This test should be done with original equipment
tires and wheels at the correct tire pressure.
1. Start the engine, and let it idle.
2. Attach a commercially available spring scale to the steering wheel. With the engine idling and the
vehicle on a clean, dry floor, pull the scale as
shown, and read it as soon as the tires begin to turn.
3. Ifthescalereadsnomorethan34N(3.5kgf,7.7lbf), the power assist is OK. If it reads more, check these
items:
 Steering linkage (see page 17-5)
 Rack guide adjustment (see page 17-15)
 EPS system (see page 17-19)
08/08/21 14:53:13 61SNR030_170_0005
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17-5
Steering Linkage and Gearbox Inspection
STEERING COLUMN STEERING JOINTSTIE-ROD END BALL JOINT
BALL JOINT BOOT
BOOT
STEERING GEARBOX
GEARBOX MOUNT CUSHIONS TIE-ROD LOCKNUT
Inspect for loose
mounting hardware.
Check for a loose joint
bolt, or faulty movement.Inspect for faulty
movement and damage.
Inspect for damage
and deterioration.
Inspect for damage
and deterioration.
Inspect for loose mounting hardware.
Inspect for deterioration. Inspect for loose locknut.
08/08/21 14:53:13 61SNR030_170_0006
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¶
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Special Tools Required
Specified return angle: 7 3 °
17-15
Rack Guide Adjustment
AB
07MAA-SL0020A
A
B A
73°
B
44 N·m
(4.5 kgf·m, 33 lbf·ft)
Locknut wrench, 43 mm 07MAA-SL0020A1. Set the wheels in the straight ahead position.
2. Loosen the rack guide screw locknut (A) with the locknut wrench, then remove the rack guide screw
(B).
3. Remove the old sealant from the rack guide screw (A), and apply new sealant (Three Bond 1215 or
Loctite 5699) to the middle of the threads (B).
Loosely install the rack guide screw on the steering
gearbox.
NOTE: If more than 5 minutes has passed after
applying the sealant, remove the old sealant and
residue, and reapply new sealant. 4. Tighten the rack guide screw (A) to 25 N·m
(2.5 kgf·m, 18 lbf·ft), then loosen it.
5. Retighten the rack guide screw to 3.9 N·m (0.4 kgf·m, 2.9 lbf·ft), then back it off to the specified
angle.
6. Hold the rack guide screw stationary with a wrench, and tighten the locknut (B) by hand until it’s fully
seated.
7. Install the locknut wrench on the locknut, and hold the rack guide screw stationary with a wrench.
Tighten the locknut to the specified torque.
8. Check for unusual steering effort through the complete turning range.
9. Check the steering wheel rotational play (see page 17-4) and the power assist (see page 17-4).
08/08/21 14:53:19 61SNR030_170_0016
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17-17
Gearbox Mount Cushion Replacement
A
B
C
D
E A
B
A
A
1. Remove the steering gearbox (see page 17-65).
2. Position a 34 mm socket wrench (A) on the flange part of the gearbox housing with a washer (B), a
10 x 105 mm flange bolt (C), and a 10 mm nut (D) as
shown.
3. Hold the 10 mm nut with a wrench, and tighten the 10 x 105 mm flange bolt with another wrench.
Remove the gearbox mount cushion (E). 4. Apply a mild soap and water solution to the new
gearbox mount cushion surface (A), then place the
mount cushion on the gearbox mounting cushion
hole.
5. Using a flat-tipped screwdriver, push the edge of the mount cushion (B) until it is about 1/3 of the
way into the gearbox housing.
NOTE: Be careful not to damage the surface of the
mount cushion when pushing it with the flat-tipped
screwdriver.
6. Position a 34 mm socket wrench on the flange part of the gearbox housing with a washer, flange bolt,
and the nut as shown.
7. Install the gearbox mount cushion by tightening the nut until the mount cushion edges (A) contact the
gearbox flange surface.
8. Install the steering gearbox (see page 17-72).
9. Check the wheel alignment, and adjust it if necessary (see page 18-5).
Replace.
08/08/21 14:53:20 61SNR030_170_0018
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17-18EPS Components
Component Location Index
STEERING GEARBOX
EPS MOTOR
BATTERY
DATA LINK
CONNECTOR (DLC)
GAUGE CONTROL
MODULE (TACH)
UNDER-HOOD
FUSE/RELAY BOX
UNDER-DASH
FUSE/RELAY BOX
EPS CONTROL UNIT
EPS INDICATORRemoval and Installation, page 17-65
Rack End Removal and Installation, page 17-79
Rack Guide Removal/Installation, page 17-83
Removal/Installation,
page 17-63
Removal/Installation, page 17-84
08/08/21 14:53:21 61SNR030_170_0019
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Restriction on Power Assist Operation
Torque Sensor Neutral PositionHow to Troubleshoot DTCs
17-20EPS Components
General Troubleshooting Information (cont’d)
Repeated extreme steering force, such as turning the
steering wheel continuously back-and-forth with the
vehicle stopped, causes an increase of power
consumption in the EPS motor. The increase of electric
current causes the EPS motor to heat up. Because this
heat adversely affects the system, the control unit
monitors the electric current of the EPS motor.
When the control unit detects heat build-up in the EPS
motor, it reduces the electric current to the EPS motor
gradually to protect the system, and it restricts the
power assist operation. The EPS indicator does not
come on during this function.
When steering torque is not applied to the steering
wheel, or when the ignition is turned to LOCK (0) and
the EPS motor cools, the control unit will restore the
power assist gradually until it’s fully restored (after
about 8 minutes).
The EPS control unit stores the torque sensor neutral
position in the EEPROM. The torque sensor neutral
position must be memorized whenever the gearbox, the
EPS motor, or the EPS control unit is replaced.
NOTE: The torque sensor neutral position is not
effected when erasing the DTCs.
The troubleshooting procedures assume that the cause
of the problem is still present and the EPS indicator is
still on. Following the procedure when the EPS
indicator does not come on can result in incorrect
diagnosis.
1. Question the client about the conditions when the problem occurred, and try to reproduce the same
conditions for troubleshooting. Find out when the
EPS indicator came on, such as while turning, after
turning, when the vehicle was at a certain speed,
etc.
2. When the EPS indicator does not come on during the test-drive, but troubleshooting is done based on
the DTC, check for loose connectors, poor terminal
contact, etc., in the affected circuit before you start
troubleshooting.
3. After troubleshooting, clear the DTC and test-drive the vehicle. Be sure the EPS indicator does not
come on.
08/08/21 14:53:58 61SNR030_170_0021
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