steering wheel HONDA CIVIC 2003 7.G Owner's Manual

EPS Components
{DTC Troubleshooting (cont'd)
DTC 42,45: Motor Driven Current
1. Clear the DTC.
2. Sta rt the engine.
3. Turn the steering wheel from lock-to-lock several
times, and wait 10 seconds or more.
Does the EPS indicator come on?
YES- Go to step 4.
NO-Check for loose wires or poor connections. lf
the connections are good, the system is OK at this
time.I
Stop the engine, and verify the DTC.
ls DTC 42 or 45 indicated?
YES-Go to step 5.
NO- Perform the appropriate troubleshooting for
the code indicated.I
Make sure the ignition switch is OFF, then
disconnect EPS control unit B connector (2P) and
the motor 2P connector.
Check for continuity between EPS control unit
connector B (2P)terminal No. 1 and body ground.
EPS CONTROL UNIT CONNECTOR B I2P)
M1 IRED} H
I f2-l
(C))
TI
Wire side of female terminals
ls there continuity?
YES Repair short to body ground in the RED wire
between the EPS control unit and the motor,I
NO-Go to step 7.
6.
17-38
7. Check for continuity between EPS control unit
connector B (2Plterminal No.2 and body ground.
EPS CONTROL UNIT CONNECTOR B I2PI
r',rz tcnnrt ll
-]-(o)
TI
Wire side of female terminals
lsthere continuity?
YES Repair short to body ground in the GRN wire
between the EPS control unit and the motor.l
NO Go to step 8.
Check for continuity between EPS control unit
connector B (2P) terminal No. 1 and No. 2.
EPS CONTROL UNIT CONNECTOR B {2P)
Wire side of female terminals
ls there continuity?
YES Repair short between the RED and GRN
wires in the motor circuit between the EPS control
unit and the motor.l
NO Go to step 9.
M2 {GRN)

EPS Gomponents
DTG Troubleshooting (cont'd)
12. Check for continuity between EPS control unit
connector B (2P)terminal No. 2 and the motor 2P
connector terminal No. 1.
EPS CONTROL UNITCONNECTOR B I2PIMOTOR CONNECTOR {2P)
14.
M2 IGRN)
Wire side of female terminals
ls there continuity?
YES-Go to step 13.
NO-Repair open in the GRN wire between the EPS
control unit and the motor.l
Check for loose wires or poor connections, if the
connections are good. substitute a known-good
EPS control unit, and connect allthe disconnected
connectors.
Start the engine, and turn the steering wheel from
lock to lock several times.
Does the EPS indicatot come on?
YES Go to step 15.
NO Check for loose EPS control unitconnectors. lf
necessary, replace the EPS control unit and
recheck. a
17-40
L
15. Stop the engine, and verify the DTC.
ls DTC 42 or 45 indicated?
YES Replace the steering gearbox motor and
recheck.l
NO Perform the appropriate troubleshooting for
the code indicated.l
(

DTC tli|: Motor Driven Current is Excessively
Hish
1. Clear the DTC.
2. Start the engine.
3. Turn the steering wheel from lock-to-lock several
times, and wait '10 seconds or more.
Does the EPS indicator come on?
YES Go to step 4.
NO-Check for loose wires or poor connections. lf
the connections are good, the system is OK at this
ttme.I
4. Stop the engine, and verify the DTC.
ls DTC 43 indicated?
YES Go to step 5.
NO-Perform the appropriate troubleshooting for
the code indicated.I
5. Make sure the ignition switch is OFF, then
disconnect EPS control unit connector B (2P) and
the motor 2P connector.
6. Turn the ignition switch ON (ll).
7. Measure the voltage between EPS control unit
connector B (2P)terminal No. '1 and body ground.
EPS CONTROL UNIT CONNECTOR B {2P}
M1 {REo) HT------t I I
Itr(v)
T-L
Wire side ot Iemale terminals
ls therc battery voltage?
YES Repair short to power in the + circuit wire
between EPS control unit and motor.l
NO-Go to step 8.
8. Measure the voltage between EPS control unit
connector B (2P)terminal No. 2 and body ground.
EPS CONTROL UNIT CONNECTOR B I2PI
TilM2 tcRNl F-lf---1 z I
(v)
Y
I
Wire side of female terminals
ls there battety voltage?
YES- Repair short to power in the - circuit wire
between the EPS contorl unit and the motor. !
NO-Go to step 9.
Turn the ignition switch OFF.
Check for continuity between EPS control unit
connector B (2P) terminals No. 1 and No. 2.
EPS CONTROL UNIT CONNECTOR B {2P)
Wire side of female terminals
ls there continuity?
YES Repair short between the GRN and RED
wires in the motor circuit between the EPS control
unit and the motor.l
NO Gotostep 11.
9.
10.
(cont d)
17-41
M2 {GBN)

EPS Components
11.
12.
DTC Troubleshooting (cont'dl
Substitute a known-good EPS control unit, and
connect all the disconnected connectors.
Sta rt the engine, and turn the steering wheel from
lock to lock several times.
Does the EPS indicator come on?
YES Go to step 13.
NO -Check for loose or poor connections at the
EPS control unit and the motor connections. lf the
connections are good, replace the EPS control unit
and recheck.l
Stop the engine, and verity the DTC.
ls DTC 43 indicated?
YES-Replace the steering gearbox motor and
recheck. tl
NO-Perform the appropriate troubleshooting for
the code indicated.l
13.
17-42
DTC 47: EPS Control Unit lnternal Circuit(Power Relay)
1. Clear the DTC.
2. Start the engine.
Does the EPS indicator come on?
YES-Go to step 3,
NO-Check for loose wires or poor connections, lf
the connections are good, the system is OK at this
time.I
3. Stop the engine, and verify the DTC.
ls DTC 47 indicated?
YES Check for loose EPS control unit connectors.
lf necessary, substitute a known-good EPS control
unit and recheck.l
NO Perform the appropriate troubleshooting for
the code indicated.I
(

DTC 66,68: EPS Control Unit lnternal Circuit
1. Clear the DTC.
2. Sta rt the engine.
3. Turn the steering wheel from lock-to-lock several
times, and wait 10 seconds or more.
Does the EPS indicator come on?
YES-Go to step 4.
NO-Check for loose wires or poor connections. lf
the connections are good. the system is OK at this
time.l
4. Stop the engine. and verify the DTC.
ls DTC 66 or 68 indicated?
YES-Check for loose or poor connections at the
EPS control unit. lf the conneclions are good,
substitute a known-good EPS control unit. lf the
symptom/indication goes away, replace the
original EPS control unit and recheck.I
NO Perform the appropriate troubleshooting for
the code indicated. t
DTC 67: Torque Sensor l/F Circuit
1. Clear the DTC.
2. Start the engine.
3. Turn the steering wheelfrom lock-to-lock several
times, and wait 10 seconds or more.
Does the EPS indicator come on?
YES-Go to step 4.
NO Check for loose wires or poor connections. lf the
connections are good, the system is OK at this time. !
4. Stop the engine, and verify the DTC.
ls DTC 67 indicated?
YES Check for loose or poor connections at the
EPS control unit. lf the connections are good,
substitute a known-good EPS control unit. lf the
symptom/indication goes away, replace the
original EPS control unit and recheck. !
NO-Perform the appropriate troubleshooting for
the code indicated.I
17-45

EPS Components
DTC Troubleshooting (cont'd)
DTC 69: EPS Control Unit Internal Circuit
1. Clear the DTC.
2. Start the engine.
3. Turn the steering wheel from lock-to-lock several
times, and wait 10 seconds or more,
Does the EPS indicator come on?
YES Go to step 4.
NO-Check for loose wires or poor connections. lf
the connections are good, the system is OK at this
time.l
4. Stop the engine, and verify the DTC.
ls DTC 69 indicated?
YES-Check for loose or poor connections at the
EPS control unit. lf the connections are good,
substitute a known-good EPS control unit. lf the
symptom/indication goes away, replace the
original EPS control unit and recheck.l
NO- Perform the appropriate troubleshooting for
the code indicated.l
17-46

EPS Components
(Motor RemovaUlnstallation (cont'dl
lnsiallation
7. Clean the mating surface of the motor (A) and
gearbox.
Apply a thin coat of silicone grease (P/N 08733-
8070E)to the new O-ring (B), and carefully fit it on
the motor.
Apply grease {Nippon Grease WR-S or equivalent
steering gear grease) into the motor shaft (C).
qE
8 x '1.25 mm20 N.m12.0 kgt.m,7 .2lbl ftl
L==-c].E@
9.
17-50
r0.Install the motor on the gearbox by engaging the
motor shaft and worm shaft (D). Note the motor
installation position {direction of motor wires).
Before tightening the bolts, turn the motor two or
three times right and left about 45 degrees. lvlake
sure the motor is evenly seated on the steering
gearbox and that the O-ring is not pinched betlveen
the mating surfaces.
Installthe removed Darts in the reverse order of
removal. and note these items:
lvlake sure the motor 2P connector is properly
connected.
lvlake sure the motor and EPS wires are not
caught or pinched by any parts.
Reconnect the negative cable to the battery.
Do the engine control module (ECM) idle learn
procedure (see page 11-139).
Enter the anti-theft code for the radio station
Dresets. Reset the clock,
Do the oower window control unit reset
procedure (see page 22-1241.
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.
11.
12.
13.

Steering Gearbox Removal
Special Tool Required
Ball ioint remover,2S mm 0TlvlAC-S100200
1. Raise the front of vehicle, and make sure it is
securely supponed.
2. Remove the front wheels.
Remove the driver's airbag (seepage23-113).
Remove the steering wheel (see page 17-6).
Remove the motor on the steering gearbox (see
page l T-49).
Remove the driver's dashboard lower cover (see
page 20-59) and under cover {see page20-60).
Remove the steering joint bolts (A), and disconnect
the steering joint by moving the steering joint (B)
toward the column.
4.
5.
6.
7.
'il
_t\
l- '/
,a.: --L -
8. Remove the cotter pin (A)from the tie-rod balljoint
nut {B), and loosen the nut.
r0 mm HEX NUT07MAC-S100200
Separate the tie-rod balljoint and damper steering
arm using the special tool (see page 18-10). Repeat
on the other side of the vehicle.
Grasp the right side tie-rod, and pull the rack all the
way to the passenger's side,
Remove the heat shield (A) mounting bolts from
the body stiffener, and let the heat shield lay
against the exhaust.
11.
9.
10.
(cont'd)
17-51

EPS Components
Steering Gearbox Removal {cont'd)
22. Move the steering gearbox and tie-rod ends as anassembly to the wheelwell opening on thepassenger's side.
23. Carefully raise the driver's side (pinion side) ofthesteering gearbox (A) and tie-rod (B) until clears themaster cylinder and under-hood fuse relay box,
then remove the steering gearbox. Be careful not to
damage the hoses, lines and wtre narnesses.
17-51

Steering Gearbox Installation
2.
'1.Before installing the steering gearbox, slide the
rack all the way to the passenger's side (right
direction).
Pass the right side of the steering gearbox together
with the tie-rods through the wheelwell opening on
the passenger's side. Continue moving the steering
gearbox toward the passenger's side untilthe
driver's side tie-rod end and gearbox clears the
master cylinder and under-hood fuse Ielay box.
Lower the steering gearbox. and move it toward
the driver's side untilthe steering gearbox is ln
Dosition.
Be careful not to damage the hoses, lines
and wire harnesses.
3. Installthe pinion shaft grommet (A).
4. Insert the pinion shaft up through the bulkhead,
then slip the right side of the steering gearbox
housing (A) over the mounting stud (C) on the
gearbox mounting bracket.
\- --' '.'', i
10 x '1.25 mm61 N.m{6 2 kgl m, 45 lb{ ftl
Install the steering stiffener B, and lightly tighten
the steering gearbox mounting nuts.
Install the steering stiffener A with the gearbox
mounting bolts. Then tighten allthe steering
gearbox mounting hardware to the specified torque.
10 x 1.25 mm6l N.m(6.2 kgt.m, 45 lbt.ft)
: --.-{..
(cont'd )
:-1....
17-63