2003 HONDA CIVIC Head

ECM ldle Learn Procedure
The idle learn procedure must be done so the ECM can
learn the engine idle characteristics.
Do the idle learn procedure whenever you do any of
these actions:. Disconnect the battery.
Replace the ECM or disconnect its connector.
Reset the ECM.
NOTE: Erasing DTCS with the Honda PGM Tester
does not require you to do the idle learn procedure.
Remove the No.6 ECU {ECM) ( 15A) fuse from the
under-hood fuse/relay box.
Remove the No.19 baftery (80A) fuse from the under-
hood fuse/relay box.
Remove PGM-FI main relay 1.
Remove any of the wires from the under-hood fuse/
retay Dox.
Disconnect any of the connectors from the under
hood fuse/relay box.
Disconnect the connector between the engine
compartment wire harness and ECM wire harness.
Disconnect the G2 terminal from the transmission
ho u srng.
Disconnectthe G'l terminal from the body.
Disconnectthe G101 terminal from the cylinder head
cover.
Procedure:
To complete the idle learn procedure, do this:
1. Make sure all electrical items (Ay'C, audio, rear
defogger, l:ghts, etc.,) are off.
2. Start the engine, and hold it at 3,000 rpm with no
load {in neutral) until the radiator fan comes on, or
until the engine coolanttemperature reaches 194"F(90'c).
3. Let the engine idle for about 5 minutes with the
throttle fully closed.
NOTE: lf the radiator fan comes on, do not include its
running time in the 5 minutes.
11-139

10. Carefully remove the slave cylinder and clutch line
bracket so as not to bend the clutch line. Do not
operate the clutch pedal once the slave cylinder has
been removed,
Remove the engine wire harness cover (A) by
lifting up on the lock tab (B), then slide the harness
forward offthe aircleaner housing mounting
bracket {C).
11.
12. Attach the special tool to the threaded hole in the
cylinder head.
vsB02c00001s
Installthe engine hanger (A) and the engine support
hanger {B) to the vehicle, then attach the hook to the
sDeciai tool.
tJ.
14.
vs802c000015
Remove the two upper transmission mounting
bolts.
(cont'd)
13-5

Steering
Steering Wheel Rotational Play
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.
. lf the play is within the limit, the gearbox and
linkage are OK.. lf the playexceedsthe limit, adjustthe rack guide
{see page '17-13). lf the play is still excessive after
rack guide adjustment, inspect the steering
linkage and gearbox {see page 17-5).
BOTATIONAL PLAY: 0 10 mm (0-0.39 in.l
+:
17-4
Power Assist Check
Start the engine, and let it idle.
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.
\
1.
3. lf the scale reads no morethan 29 N (3.0 kgf,6.6 lbf),
the power assist is OK. lf it reads more, check these
items:
. Front tire pressure. Steering linkage (see page 17-5). Rack gulde adjustment (see page 17-13). EPS system (see page 17-18)

Steering
Steering Wheel Removal
SRS components are located in this area. Review the
SRS component locations (see page 23-13), and
precautions and procedures (see page 23-14) in the SRS
section before performing repairs or service.
1. Align the front wheels straight ahead, then remove
the driver's airbag from the steering wheel (see
page 23-113).
2. Disconnect the cruise control sevresume switch
connector (A), and loosen the steering wheel nut
{B).
i
17-6
3. Install a commercially available steering wheel
puller {A) on the steering wheel (B). Free the
steering wheel from the steering column shaft by
turning the pressure bolt (C) ofthe puller.
Note these items when removing the steering
wheel:. Do not tap on the steering wheel orthesteering
column shaft when removing the steering wheel.. lf you thread the puller bolts (D) intothewheel
hub more than 5 threads, the bolts will hit the
cable reel and damage it. To prevent this, install
a pair of jam nuts 5 threads up on each puller bolt.
D
Bemove the steering wheel puller, then remove the
steering wheel nut and steering wheel from the
sleerino column.
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Steering
Steering Wheel Installation
1. Before installing the steering wheel, make sure the
front wheels are aligned straight ahead, then center
the cable reel (A). Do this by first rotating the cable
reel clockwise until it stops. Then rotate it
counterclockwise about two and a half turns. The
arrow mark (B) on the cable reel label should point
straight up.
Position the two tabs (A) of the turn signal
canceling sleeve (B) as shown. Installthe steering
wheel onto the steering column shaft, making sure
the steerlng wheel hub (C) engages the pins (D) of
the cable reel and tabs of the canceling sleeve. Do
not tap on the steering wheel or steering column
shaft when installing the steering wheel.
17-8
3. Install the steering wheel nut (A), and tighten it to
the specified torgue.
A_B39 N.m (4.0 kgf m.29lbt ftl
Connect the cruise control set/resume switch
connector (B). fvlake sure the wire harness is routed
and fastened properly.
Install the driver's airbag, and confirm that the
system is operating properly {see page 23-113).
Check the horn, turn signal canceling and cruise
control switches for proper operation.
Reconnect the battery and do the following:. Do the engine control module (ECM) idle learn
procedure (see page 1l-139),. Power window control unit resetting procedure
\see page 22-1281.. Enter the anti-theft cord for the radio, then enter
the custmer's radio station presets.. Set the clock.
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7.
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'' '1i::..'.' l

Steering
Steering Lock Replacement
NOTE: Do not try to re-key a replacement steering lock.
lf necessary, re-key the other locks.
1. Remove the steering column (see page 17-9).
2. Center punch each ofthe two shear bolts (A), and
drill their heads off with a 5 mm (3i 16 in.) drill bit.
Be careful not to damage the switch body when
removing the shear bolts,
3. Remove the shear bolts from the switch body.
4. Installthe switch body without the key inserted.
5. Loosely tighten the new shear bolts.
6. Insert the ignition key, and check for proper
operation of the steering wheel lock and that the
ignition key turns freely.
:..'-":'
17-12
7. Tighten the shear bolts (A) untilthe hex heads (B)
twist off.
I
A
I

Rack Guide Adjustment
Special Tool Required
Locknut wrench, 43 mm 07MAA-S100200
1. Set the wheels in the straight ahead position.
2. Remove the heat shield (A).
3.
9.8 N.m (r.0 kgf.m,7.2lbtft)
Remove the transmission mount bracket (see step
32 on page 13-8).
Loosen the rack guide screw locknut (A)with the
special tool, then remove the rack guide screw (B).
Remove the old sealant from rack guide screw, and
apply new sealant to the middle of the threads (A).
Loosely installthe rack guide screw on the steering
gearDox.
'-.i. '' '
07MAA-S100200
6. Tighten the rack guide screw (A)ro 25 N.m (2.5
kgf.m, 18lbf.ft). then loosen it.
5" Max.
j i-rrrr-,
I 4il N.m{a.5 kgf.m,33lbt.ft)
Retighten the rack guide screw to 6 N.m (0.6 kgf m,
4 lbf.ft), then back it off to the specified angle.
Specified Return Angle: 5' Max.
Hold the rack guide screw stationary with a wrench,
and tighten the locknut by hand until it's fully
seated.
Installthe special tool on the locknut (B), and hold
the rack guide screw (A) stationary with a wrench,
Tighten the locknut an additional 30" with the
specialtool.
Reinstall the transmission mount bracket and heat
sh ie ld,
Check for unusual steering effort through the
complete turning travel.
Check the steering wheel rotation play (see page
17-4) and the power assist (see page 17-4).
11.
7.
9.
10.
12.
17-13

EPS Components
General Troubleshooting Information (cont'dl
5. The blinking frequency indicates the DTC. DTCS are
indicated by a series of long and short blinks. One
long blink equals 10 short blinks. Add the long and
short blinks together to determine the DTC. After
determining the DTC, refer to the DTC
Troubleshooting Index.
The system will not indicate the DTC unless these
conditions are met:. Set the front wheels in the straight ahead drivingposition.. The ignition switch is turned ON (ll).. The engine is stopped.. The SCS circuit is shorted to body ground before
the ignition switch is turned ON (ll).
Example of DTC 23
Long blinks Short blinks(two times) (three timesl
6.
7.
Turn the ignition switch OFF.
Disconnect the Honda PGM Tester from the DLC.
17-20
How to Clear EPS DTCs
Honda PGM Tesler Method:
1. With the ignition switch OFF, connect the Honda
PGM Tester (A) to the 16P data link connector (DLC)
(B) located under the dash on the driver's side of
the vehicle.
Turn the ignition switch ON (ll), and clear the
DTC{s) by following the screen prompts on the
PGM Tester.
NOTE: See the Honda PGM Tester user's manual
for specific instructions.