2003 HONDA CIVIC Body

EPS Indicator Circuit Troubleshooting
1.Turn the ignition switch ON (ll), start the engine,
and watch the EPS indicator.
Does the EPS indicator come on?
YES lf the EPS indicator comes on and goes off, it's
OK. lf the EPS indicator stays on or blinks. go to
step 12.
NO Go to step 2.
Turn the ignition switch OFF, then ON (ll) again,
and watch the brake system indicator,
Does the brake system indicator come on?
YES-Go to step 3.
NO Repair open in the indicator power source
circuit.l. Blown No. 10 (7.5A)fuse.
. Open in the wire between the No. 10 (7.5A) fuse
and gauge assembly.. Open circuit inside the under-dash fuse/relay box,. Faulty gauge assembly.
Turn the ignition switch OFF,
Connect a jumper wire between the gauge
assembly 22P connector terminal No. 13 and body
ground, then turn the ignition switch ON (ll).
GAUGE ASSEMBLY 22P CONNECTOR (Blue connector)
Wire side of female terminals
Does the EPS indicator come on?
YES-Go to step 5.
NO Inspect the EPS indicator bulb, if the bulb is
OK, replace the bulb circuit board in the gauge
assembly.l
3.
4.
5. Turn the ignition switch OFF.
6. Disconnect EPS control u n it connector C (20P).
7. Turn the ignition switch ON (ll).
8. Connect EPS control unit connector C (20P)
terminal No. 6 to body ground with a jumper wire.
Wire s d€ oflemale16rmina s
Does the EPS indicatot come on?
YES Go to step 9.
NO Repair open in the wire between the gauge
assembly and the EPS control unit.l
Turn the ignition switch OFF.
Disconnect EPS control unit connector A (2P),
Check for continuity between EPS control unit
connector A terminal No. 2 and body ground.
EPS CONTROL UNITCONNECTOA A I2PI
wire s de oftemale terminals
ls there continuity?
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.I
NO Repair open in the wire or a bad ground at
G151,t(cont'd)
9.
10.
'l 1.
EPS CONTBOL UNIT CONNECTOB C {2OP)
17-47

EPS Components
I
12.
EPS Indicator Circuit Troubleshooting (cont'dl
Turn the ignition switch OFF.
Disconnect EPS control unit connector C (20P).
Turn the ignition switch ON (ll).
Does the EPS indicator come on?
YES-Repair short to ground in the YEUBLU wire
between the gauge assembly and the EPS control
unit, or replace the bulb circuit board in the gauge
assembly.l
NO-Go to step 15.
Measure the voltage between EPS control unit
connector C (20P)terminal No. 10 and body ground.
EPS CONTROL UNIT CONNECTOR C I2OP)
Wire side of female terminals
ls there battery voltage?
YES-Go to step 16.
NO-Repair open in the wire between EPS control
unit connector C (20P) and the No, 10 (7.5A) fuse. t
13.
14.
17-48
16. Measure the voltage between EPS control unit
connector A (2P)terminal No. '1 and body ground.
EPS CONTROL UNITCONNECTON A (2P}
+B (WHT/BLUI H
Itr
v-L
17.
18,
19.
20.
Wire side of female terminals
ls there battery voltage?
YES-Go to step 17.
NO-Check for a blown No. 18 (604) fuse in the
under-hood fuse/relay box or open/short in the
WHT/BLU wire between the under-hood fuse/relay
box and the EPS control unit.l
Turn the ignition switch OFF.
Reconnect EPS control unit connector A (2P).
Turn the ignition switch ON (ll).
Measure the voltage between EPS control unit
connector C (20P)terminal No. 8 and body ground.
EPS CONTROL UNIT CONNECTOR C (2OP)
Wire side of female terminals
ls therc about 10 V?
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 Repair short to ground in the BRN wire
between the data link connector and the EPS
control unit.I

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
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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 Installation (cont'd)
7. Installthe body stiffener (A), and torque the
mounting bolts to the specified torque.
8 x 1.25 mm29 N.m {3.0 kgf.m,22lbf.ftl
LInstall the heater valve (A) on the bulkhead, and
connect the heater valve cable end (B) to the heater
valve arm (C). Readjust the heater valve cable {seepage 21-46).
9.8 N.m(1.0 kgf m,7.2 tbf.ftl
L-t ,:.i.t'
17-64
9. Reinstall the heater hose (A) on the hose bracket.
Install the engine wire harness clamps (B) to the
three harness brackets.
Under the steering gearbox, install the ground
cable terminal (A) on the steering gearbox housing.
10.
'I t.
9.8 N.m{1.0 kgf.m, 7.2lbf.ft)

Front Suspension
Damper/Spring Replacement (cont'dl
Right side:
9.
Hold the bottom of the damper with your hand, and
compress the spring. Do not compress the spring
excessively.
Installthe 12 mm nut (A) on the damper shaft (B).
Hold the damper shaft with a hex wrench (C), and
tighten the 12 mm nut to the specified torq ue.
(4.5 kgt.m, 33 lbf ft)
Remove the damper assembly from the strut spring
compressor.
10.
18-24
Installation
1. Lower the lower arm, and position the damper
assembly in the body, Turn the damper mounting
base so the "AL" or "AR" mark (A) faces toward
the outside of the vehicle.
B10 x 1.25 mm,14 N.m{4.5 kgt.m,33 lbf.ft)
,1,6
Loosely install the flange nuts (A) onto the top of
the damper.L

Removal
1. Raise the rear of the vehicle. and support it with
safety stands in the proper location (see page 1-8).
Remove the rear wheels.
2. Remove the flange bolt {A) from the bottom of the
damper.
Remove the rear bulkhead cover (see page 20-51).
Remove the flange nuts (A) from the top of the
damper in the trunk.
3.
5. Remove the damper assembly from the body.
i
(cont d)
18-35

D
Installation
1. Position the damper assembly in the body. Note
the direction of the damper mounting base so that
the small hole dot on it is toward the front and
inside of the vehicle.
Loosely install the flange nuts (A) onto the top of
the damper,
A10 x 1.25 mm59 N.m16.0 kgt.m, ia lbt ft)
3. Loosely installthe flange bolt (A) on the bottom of
the damper.
12x 1.25 mm61 N m {6.2 kgf.m. 45 lbf.ft)
Raise the suspension with a floor jack to load the
vehicle weight, and tighten the nuts and bolt to the
specified torque values.
Clean the mating surface ofthe brake disc and the
inside of the wheel, then install the rear wheel.
Check the wheel alignment, and adjust it if
necessary (see page 18-4).
18-37

Conventional Brake Components
Parking Brake Switch Test
1. Remove the rear console, and disconnect theconnector (A)from the switch (B).
Check for continuity between the switch terminal
and body ground:
. With the brake lever up, there should be
continuity.. With the brake lever down, there should be no
continuity.
R
'dFu\!E!UF-
Y
19-10
Brake Fluid Level Switch Test
Check for continuity between the terminals (A) with thefloat in the down position and the up position.
. Remove the brake fluid completely from the reservoir.
With the float down, there should be continuity.. Fjllthe reservoir with brakefluidto MAX(upper) level(B). With the float up, there should be no continuity.
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