ACURA CSX 2006 Service Repair Manual

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DTC 71-04:
YES
NO
YES
NO YES
NO
YES
NO
17-58EPS Components
DTC Troubleshooting (cont’d)
EPS CONTROL UNIT CONNECTOR D (28P)
R1 (BLU)
R2 (PNK)
EPS CONTROL UNIT CONNECTOR D (28P) R1 (BLU)
R2 (PNK)
EPS Motor Angle Sensor (Check
Signals) (Regular Diagnosis)
1. Turn the ignition switch to ON (II).
2. Clear the DTC with the HDS.
3. Turn the ignition switch to LOCK (0).
4. Start the engine.
5. Turn the steering wheel to the right or left, and wait
10 seconds or more.
Go to step 6.
Check for loose terminals or poor connections.
If the connections are good, the system is OK at
this time.
6. Check for DTCs with the HDS.
Go to step 7.
Troubleshoot the indicated DTC. If there are
no DTCs, the system is OK at this time.
7. Turn the ignition switch to LOCK (0).
8. Disconnect the EPS control unit connector D (28P). 9. Measure the resistance between the EPS control
unit connector D (28P) terminal No. 13 and No. 27.
Go to step 10.
Go to step 13.
10. Check for continuity between body ground and the EPS control unit connector D (28P) terminal No. 13
and the terminal No. 27 individually.
Go to step 11.
Check for loose terminals in the EPS control
unit connectors, and repair if necessary. If no poor
connections are found, replace the EPS control unit
(see page 17-84).
Wire side of female terminals
Wire side of female terminalsDoes t he E PS i nd i cat or come on?
Is DTC 71-04 indicated? Is t he r esi st ance bet w een 13 25 ?
Is there continuity?
08/08/21 14:54:38 61SNR030_170_0059
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YES
NO YES
NO
17-59
EPS MOTOR ANGLE SENSOR 6P CONNECTOR
R2 (GRN)
R1 (BRN)
EPS MOTOR ANGLE SENSOR 6P CONNECTOR
R2 (GRN)
R1 (BRN)
11. Disconnect the EPS motor angle sensor 6P
connector.
12. On the sensor side check for continuity between body ground and EPS motor angle sensor 6P
connector terminal No. 2 and the terminal No. 5
individually.
Faulty EPS motor angle sensor (internal
failure), or short to body ground in the wire (sensor
side), replace the EPS motor (see page 17-63).
Repair short to body ground in the wire
between the EPS motor angle sensor 6P connector
and the EPS control unit. 13. Disconnect the EPS motor angle sensor 6P
connector.
14. On the sensor side measure the resistance between the EPS motor angle sensor 6P connector terminals
No. 2 and No. 5.
Open, or short to body ground in the wire
between the EPS motor angle sensor 6P connector
and EPS control unit.
Faulty EPS motor angle sensor (internal
failure), or short to body ground in the wire (sensor
side), replace the EPS motor (see page 17-63).
Terminal side of male terminals Terminal side of male terminals
Is there continuity?
Is t he r esi st ance bet w een 13 25?
08/08/21 14:54:39 61SNR030_170_0060
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EPS indicator does not come on EPS indicator does not go off, and no DTCs
are stored
YES
NO
YES
NO
YES
NO
17-6017-60EPS Components
Symptom Troubleshooting
EPS CONTROL UNIT CONNECTOR D (28P)
IG1 (YEL)* (GRY)*
*1: ’06 model
*2: ’07-09 models
12
1. Turn the ignition switch to ON (II), and watch the EPS indicator.
The system is OK at this time.
Troubleshoot the gauge control module (tach)
(see page 22-241). NOTE: Check for gauge DTCs with the HDS (see page
22-3). If gauge DTCs are stored, troubleshoot those
DTCs first.
1. Turn the ignition switch to LOCK (0).
2. Check the No. 4 (7.5 A) fuse in the under-dash fuse/ relay box.
Reinstall the checked fuse, then go to step 5.
Go to step 3.
3. Disconnect EPS control unit connector D (28P).
4. Check for continuity between EPS control unit connector D (28P) terminal No. 16 and body ground.
Repair short to body ground in the wire
between the EPS control unit and the No. 4 (7.5 A)
fuse in the under-dash fuse/relay box.
Install a new No. 4 (7.5 A) fuse in the under-
dashfuse/relaybox,thengotostep5.
Wire side of female terminals
Does t he E PS i nd i cat or come on?
IsthefuseOK?
Is there continuity?
08/08/21 14:55:07 61SNR030_170_0061
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YES
NO
YES
NO YES
NO
17-61
EPS CONTROL UNIT CONNECTOR D (28P)
IG1 (YEL)* (GRY)*
*1: ’06 model
*2: ’07-09 models EPS CONTROL UNIT CONNECTOR A (2P)
PG (BLK)
12
5. Reconnect EPS control unit connector D (28P).
6. Turn the ignition switch to ON (II), and watch theEPS indicator.
Troubleshooting is complete.
Replace the EPS control unit (see page 17-84).
7. Disconnect EPS control unit connector D (28P).
8. Turn the ignition switch to ON (II).
9. Measure the voltage between EPS control unit connector D (28P) terminal No. 16 and body ground.
Go to step 10.
Repair open in the wire between the EPS
control unit and under-dash fuse/relay box.
10. Turn the ignition switch to LOCK (0).
11. Disconnect EPS control unit connector A (2P). 12. Check for continuity between EPS control unit
connector A (2P) terminal No. 1 and body ground.
Go to step 13.
Repair open in the wire between the EPS
control unit and body ground (G 402).
(cont’d)
Wire side of female terminals Wire side of female terminals
Does the EPS indicator come on, then go of f ?
Is there battery voltage? Is there continuity?
08/08/21 14:55:07 61SNR030_170_0062
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YES
NO YES
NO
17-62EPS Components
Symptom Troubleshooting (cont’d)
EPS CONTROL UNIT CONNECTOR D (28P)
CAN-H (WHT)
CAN-H (WHT) GAUGE CONTROL MODULE (TACH) 36P
CONNECTOR EPS CONTROL UNIT CONNECTOR D (28P)
CAN-L (RED)
CAN-L (RED)
GAUGE CONTROL MODULE (TACH) 36P
CONNECTOR
13. Disconnect the gauge control module (tach) 36P connector.
14. Check for continuity between EPS control unit connector D (28P) terminal No. 1 and gauge control
module (tach) 36P connector terminal No. 1.
Go to step 15.
Repair open in the wire between the EPS
control unit and the gauge control module (tach). 15. Check for continuity between EPS control unit
connector D (28P) terminal No. 15 and gauge
control module (tach) 36P connector terminal
No. 19.
Check for loose terminals in the EPS control
unit connectors, and repair if necessary. If no poor
connections are found, replace the EPS control unit
(see page 17-84).
Repair open in the wire between the EPS
control unit and the gauge control module (tach).
Wire side of female terminals
Wire side of female terminals Wire side of female terminals
Wire side of female terminals
Is there continuity? Is there continuity?
08/08/21 14:55:08 61SNR030_170_0063
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Removal
17-63
EPS Motor Removal and Installation
A B
6x1.0mm A
B
8x1.25mm
NOTE:
 Do not allow dust, dirt, or other foreign materials to enter the gearbox.
 Make sure not to get any silicone grease on the terminal part of the connectors and switches,
especially if you have silicone grease on your hands
or gloves.
1. Remove the steering gearbox (see page 17-65).
2. Disconnect the torque sensor 3P connector (A) from the steering gearbox, then remove the wire
harness clamp bolts and the ground terminal (B). 3. Remove the EPS motor (A) from the steering
gearbox, then remove the O-ring (B) and discard it.
(cont’d)
Replace.
08/08/21 14:55:08 61SNR030_170_0064
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Installation
17-64EPS Components
EPS Motor Removal and Installation (cont’d)
C
B
E
8x1.25mm
20 N·m
(2.0 kgf·m,
14 lbf·ft)
A
D A
6x1.0mm
9.8 N·m
(1.0 kgf·m,
7.2 lbf·ft)
B
1. Clean the mating surface of the EPS motor (A) andthe steering gearbox.
2. Apply a thin coat of silicone grease to the new O-ring (B), and carefully fit it on the EPS motor.
3. Apply steering grease into the EPS motor shaft (C).
4. Set the EPS motor on the gearbox by engaging the EPS motor shaft and the worm shaft (D).
5. Turn the EPS motor two or three times to the right and left about 45 degrees. Make sure the EPS
motor is evenly seated on the steering gearbox,
and that the O-ring is not pinched between the
mating surfaces.
6. Loosely install the motor mount bolts(E), then turn the steering shaft two or three times to the right
and left about 45 degrees.
7. Tighten the motor mount bolts to the specified torque. 8. Connect the torque sensor 3P connector (A) to the
steering gearbox, then install the wire harness
clamp bolts and the ground terminal (B).
9. Finish the installation, and note these items:  Make sure the torque sensor 3P connector isproperly connected.
 Make sure the EPS motor and the EPS wires are not caught or pinched by any parts.
10. Install the steering gearbox (see page 17-72).
Replace.
08/08/21 14:55:09 61SNR030_170_0065
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Special Tools Required
Removal
17-65
Steering Gearbox Removal and Installation
A
 Ball joint remover, 28 mm 07MAC-SL0A202
 Engine hanger adapter
VSB02C000015
 Front subframe adaptor VSB02C000016
 2006 Civic engine hanger VSB02C000025
 Engine support hunger, A and Reds AAR-T1256 : These special tools are available through Honda
Canada Inc. Technical Tools Department; FAX 866-
398-8665/e-mail: ch_technicaltools ch. honda. com
Note these items during removal:  Use solvent and a brush, wash any oil and dirt off the end of the steering gearbox. Avoid any electrical
parts. Blow dry with compressed air.
 Be sure to remove the steering wheel before disconnecting the steering joint, or damage to the
cable reel may occur.
1. Do the battery terminal disconnection procedure (see page 22-68).
2. Raise the front of the vehicle, and support it with safety stands in the proper locations (see page
1-11).
3. Remove the front wheels.
4. Remove the driver’s airbag (see page 24-188), and the steering wheel (see page 17-6).
5. Remove the driver’s dashboard undercover (see page 20-103). 6. Remove the steering joint cover (A).
(cont’d)
08/08/21 14:55:09 61SNR030_170_0066
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17-66EPS Components
Steering Gearbox Removal and Installation (cont’d)
A
B
C D
A
8x1.25mm B
A
7. Release the lock lever, and adjust the steering column to the full tilt up position, and to the full
telescopic in position.
8. Tighten the lock lever.
9. Hold the lower slide shaft (A) on the column with a piece of wire (B) between the joint yoke (C) of the
lower slide shaft and joint yoke (D) of the upper
shaft to prevent the slider shaft from pulling out.
10. Release the lock lever, and adjust the steering column to the full telescopic out position, then
tighten the lock lever. 11. Remove the steering joint bolt (A), and disconnect
the steering joint by moving the steering joint (B)
toward the column.
12. Remove the center guide (A) (if equipped), and discard it. The center guide is for factory assembly
use only.
13. Remove the cowl cover and under cowl panel (see page 20-163).
14. Remove the air cleaner housing (see page 11-345).
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17-67
VSB02C000015
VSB02C000025 B
C
A D
VSB02C000015
AAR-T1256 07MAC-SL0A202
A
B
12 x 1.25 mm 07AAF-SDAA100
D C
AB
15. Attach the engine hanger adapter (VSB02C000015)to the threaded hole in the cylinder head.
16. Install the front leg assembly (A), hook (B), and wing nut (C) from an A and Reds engine support
hanger (AAR-T1256) onto the 2006 Civic engine
hanger (VSB02C000025). Carefully position the
engine hanger on the vehicle, and attach the hook
to the forward hole in the engine hanger adapter
(D). Tighten the wing nut by hand to lift and support
the engine/transmission assembly.
NOTE: Use care when working around the
windshield. 17. Remove the cotter pin (A) from the 12 mm nut (B),
and loosen the nut.
18. Separate the tie-rod ball joint and the knuckle using the ball joint remover (see page 18-12).
19. Remove the front splash shield (see page 20-172).
20. Disconnect the EPS motor connector A (2P), the EPS motor connector B (1P), torque sensor 4P
connector (C), the EPS motor angle sensor 6P
connector (D), from passenger’s side of the
steering gearbox. Wrap the connectors with vinyl
tape to avoid contamination from grease or water.
(cont’d)
Replace.
08/08/21 14:55:10 61SNR030_170_0068
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