2003 HONDA CIVIC Gearbox

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
(

Motor Removal/lnstallation
Bemoval
1. Make sure you have the anti-theft code for the radio,
then write down the frequencies for the preset
buttons.
2. Disconnect the negative cable from the battery, and
wait 3 minutes before beginning work.
3. Remove the air cleaner assembly (A).
4. Remove the connector bracket (A) onthegearbox
housing, and disconnect the motor 2P connector(B).
9.8 N.m {1.0 kgf.m,
5. Remove the motor {A) from the gearbox housing.
6. Remove the O-ring (B) and discard it.
(cont'd)
17-49

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)
Disconnect the EPS wire harness 6P connector (A),
and remove the EPS wire harness (B) and mountino
bracket (C).
12.
Remove the ground cable terminal (A) from the
steering gearbox housing.
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b-H\
ry T,-.lt'^ \
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13.
_-1..1.-'
-a--zii F--_1
17-52
14. Remove the engine wire harness clamps {A)fromthe three mounting brackets.
Remove the heater hose {B) from the bracket.
Open the heater valve cable clamp (A), and
disconnect the heater valve cable (B). Remove theheater valve (C) from the bulkhead, and move jt
aside.
t5.
16.
I

17. Remove the bodv stiffener (A).
Remove lhe steering stiffener A from the left side
of the steering gearbox.
18.
19. Remove the steering stiffener B from the right side
of the steering gearbox.
i t1-:: .,
20. Lower the steering gearbox, and rotate it so the
pinion shaft points upward.
21. Remove the pinion shaft grommet (A) from the top
of the torque sensor.
(cont'd)
17-53

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

I x '1.25 mm20 N.m (2.0 kgf.m,7.2lbt ftl
O.RINGReplace.
PINION SHAFT GROMMET
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SLTDER GUIDE
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{^il stot *,tttc
\J" Renrace
LocK scREw '162 N.m lto.s rgf m,119lbf ft)
BOOTBAND Beqtace.
- Replace.
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II
ASHER
rtE54
TIE.ROD END
CONNECTOR
Steering Gearbox Overhaul
Exploded View
RACK GUIDE
6^:,;
BOOT BAND '"''/
Beplace.
. -@ -sPRrNG. DISC WASHEB @'---g
L)-RACKGUIDE SCREW
6v---\' \.oc**u.
SRACKET
LOCK WReplace.
-RODN m {5.5 kgf.m,40lbf ft)
kgf.m,
(cont'd)
17-55
33 tbt.ft)44 N m {4.5