2003 HONDA CIVIC ERS

Openers
Hood Latch Replacement
NOTE:. Put on gloves to protect your hands.. Take care not to scratch the body.
1. Remove the bolts, then remove the hood latch (A)
from the body.
Fastener Locations
> i Bolt, 3
Disconnect the hood opener cable (B) from the
hood latch. Take care not to bend the cable.
--------------'6x1.0mm9.8 N.m (1.0 kgf.m, 7.2lbf.ft)
20-108
Installthe hood latch in the reverse order of
removal, and note these items:
. Apply multipurpose grease to each location of
the hood latch indicated by the arrows.. Make sure the hood opener cable is connected
properly.
. Make sure the cable actuates the latch before you
close the hood,. Adjustthe hood latch alignment (see step 3 onpage 20-87).. Make sure the hood opens properly and locks
securely.

Fuel Fill Door Opener Replacement
1.Using a flat-tip screwdriver wrapped with
protective tape, detach the hooks (A) by prying the
front side cap (B), then remove it from the left door
silltrim (C), and loosen the bolt (D) securing the
fuel fill door opener.
6x1.0mm9.8 N.m11.0 kgf m,7.2 lbf.ft)
Remove the left door sill trim (see page 20-50i.
Remove the opener (Alfrom the bolt {B).
2.
3.
4. Disconnect the fuel fill door opener cable (A), then
remove the opener iB). Take care not to bend the
ca o te.
Installthe opener in the reverse order of removal,
and note these items:
5.
lMake sure the opener cable is connected
properly.
lvlake sure the fuel fill door opens properly and
locks securely.
20-109

Openers
Hatch Handle Replacement
NOTE: Put on gloves to protect your hands.
1. Remove these items:
. Hatch lower trim panel (see page 20-53). Rear license trim panel (see page 20-98)
2. Remove the rear window wiper motor (see page
22-1461.
3. Disconnect the hatch
hatch handle (B), and
Locations
opener cable 1A)from the
remove the nuts.
6x1.0mm9.8 N.mFastener
a : Nut,
()rI
4. Pull outthe hatch handle (A), then remove it.
Installthe handle in the reverse order of removal.
and note these items:
lMake sure the hatch opener cable is connected
securely.
Make sure the hatch opens properly.
(1.0 kg{.m,7 2 tbt.{t\
a
,t.
20-110
Hatch Latch Replacement
NOTE: Put on gloves to protect your hands.
'1. Remove the hatch lowertrim panel (see page 20-
53).
2. Disconnect the hatch opener cable (A), cylinder rod(B). hatch actuator connector (C). and hatch latch
switch connector {D). and detach the hatch actuator
connector and hatch latch switch connector from
the hatch.
Faslener Locations
) : Bolt, 3
ttb
L- i-'-3;li9#-
11,0 kgt m,7.2lbf ftl
Remove the bolts, then pullthe hatch latch (E) out,
then remove it.
Installthe latch in the reverse order of removal, and
note these items:
. Make sure each connector is plugged in properly,
and the rod and cable are connected properly.. l\4ake sure the cable actuates the latch before you
close the hatch.. Make sure the hatch opens properly and locks
securely.

Hatch Lock Cylinder Replacement
NOTE; Put on gloves to protect your hands.
'1. Remove these items:
. Hatch lower trim panel (see page 20-53).. Rear license trim (see page 20-98).
2. Disconnect the cylinder rod (A)
-..
From outside the hatch, remove the bolt securing
the lock cylinder {A}. From inside the hatch, pull the
lock cylinder out by releasing the hook (B).
Fastener Location
> : Bolt, 1
rS'l-.u-ar
6x 1.0 mm9.8Nm(1.0 kgf m,7.2lbt.ftl
*/t
4. Install the lock cylinder in the reverse order of
removal, and note these items:
. Make sure the rod is connected properly.
. Make sure the hatch opens properly and locks
securely.
20-111

Heating and Air Conditioning
A/C Service Tips and Precautions
Compressed air mixed with R- 134a forms a
combustible vapor.
The vapor can burn or explode causing serious
injury.
Never use compressed air to pressure test
R-134a service equipment or vehicle air
conditioning systems.
Air conditioning refrigerant or lubricant vapor
can irritate your eyes, nose, or throat.
Be careful when connecting service equipment.
Do not breathe refrigerant or vapor.
The air conditioning system uses HFC-134a (R-134a)
ref rigerant and polyalkyleneglycol (PAG) ref rigerant oil,
which are not compatible with CFC'12 (R-12) refrigerant
and mineral oil. Do not use R-'12 refrigerant or mineral
oil in this system, and do not aftempt to use R 12
servicing equipment; damage to the air conditioning
system or your servicing equipment will result.
Use only service equipment that is U.L.-listed and is
certified to meet the requirements of SAE J2210 to
remove R-134a from the air conditioning system.
lf accidental system discharge occurs, ventilate the
work area before resuming service.
R-134a service equipment or vehicle air conditioning
systems should not be pressure tested or leak tested
with compressed air.
Additional health and safety information may be
obtained from the refrigerant and lubricant
manufacturers.
. Always disconnect the negative cable from the
battery whenever replacing air conditioning parts.
. Keep moisture and dirt out of the system. When
disconnecting any lines, plug or cap the fittings
immediately; don't remove the caps or plugs until
iust be{ore you reconnect each line.' Before connecting any hose or line, apply a few drops
of relrigerant oil to the O-ring.. When tightening or loosening a fitting, use a second
wrench to support the matching fitting.. When discharging the system, use a R-'134a
ref rigerant recovery/recycling/charging station; don't
release refrigerant into the atmosphere.
21-6
A: 130 m0 {4 l/3 tl.oz,4.6 lmp.oz)
],^
A/C Refrigerant Oll Replacement
Recommended PAG oil: KEIHIN SP 10:
. P/N 38897-P l3-A01AH: '120 m0 i4 fl oz). P/N 38899-P13'A01: 40 m0 i1 1/3 fl oz)
Add the recommended refrigerant oil in the amount
listed if you replace any of the following parts.
. To avoid contamination. do not return the oilto the
container once dispensed, and never mix it with other
refrigerant oils.. lmmediately af'ter using the oil, reinstallthe cap on
the container, and seal it to avoid moisture
aosorpron.. Donotspill the refrigerant oil on the vehicle; it may
damage the paint. lf it gets on the paint, wash it off
immediately.
Condenser ...........25 mA \516 tl.oz, 0.9 lmp.oz)
Evaporator ........... 45 m0 (1 113Il.oz, '1.4 lmp.oz)
Line or hose ......... '10 m0 {1/3 fl.oz,0.4 lmp.oz)
Receiver/Dryer .... '10 m0 ('113 fl.oz,0.4 lmp.oz)
Leakage repai r .... 25 m0, 1516 Il oz, 0.9 lmp.oz)
Compressor ......... For compressor replacemenl,
subtract the volume of oil drained
from the removed compressor from
130 m0 (4 1/3fl.oz, 4.6lmp.oz), and
drain the calculated volume of oil
f rom the new compressor: '130 m0
i.4113 fl.oz,4.6 lmp.oz) Volume of
removed compressor = Volume to
drain from new compressor.
NOTE: Even if no oil is drained from
the removed compressor, don't
d rain more than 50 m0 \1 2/3 fl.oz,'1.8 lmp oz)from the new
compressor.
\
REMOVEDCOMPBESSOR
rA
li
\.. rJ
b
I
,lEL.-
"o*t ttu"
NEWCOMPRESSOR
/- a\i tl
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I I I DRAINING_*lH I voLUME

Heating and Air Gonditioning
System Description (cont'dl
The air conditioning system removes heat from the passenger compartment by circulating refrigerant through the
system as shown below.
/
BLOWER FAN
\
\,u
EXPANSION VALVE(Meters the requiredamount of refrigerantinto the evaporator)
A/C PRESSURE SWITCHWhen the refriqerant is below196 kPa (2.0 kgi/cm',28 psi)or above 3,140 kPa (32 kgf/cm'455 psi), the Py'c pressureswitch opens the circuit tothe Py'C switch and stops theair conditioning to protect thecompressor-
RECEIVER/DRYER(Traps debris, andremoves morsturel
APOBATOR TEMPERATURESENSOR
THERMAL PROTECTOR(Opens the compressor clutch circuitwhen the compressot temperaturebecomes too high)
RELIEF VALVE(Relieves pressure at the compressorwhen the pressure is too high)
A/C COMPRESSOR(Suction and comoression)\-^
I HrcH PRESSURE vAPoR
[ '.... -:--l Low PREsSUBE LrourD
tffi Low PREssURE vAPoR
This vehicle uses HFC-134a (R-'134a) refrigerant which does not contain ch lorofluorocarbons. Pay attention to the
following service items:
. Do not mix refrigerants CFC-12 (R-12) and HFC-134a (R-134a). They are notcompatible.. Use onlythe recommended polyalkyleneglycol (PAG ) refrigera nt oil (KElHlN SP '!0) designedfortheR-134a
compressor. Intermixing the recommended (PAG) refrigerant oil with any other retrigerant oil will result in
compressor failu re.. AllAy'C system parts (compressor, discharge line, suction line, evaporator, condenser, receiver/dryer. expansion
valve, O-rings for joints) have to be designed for refrigerant R 134a. Do not exchange with R-'12 parts.
. Use a halogen gas leak detector designed for refrigerant R-134a.. R-12 and R-134a refrigerant servicing equipment are not interchangeable. Use only a recovery/recycling/charging
station that is U.L.-listed and is certified to meet the requirements of SAE J2210 to service R-134a air conditioning
system.. Always recover the refrigerant R-134a with an approved recovery/recycling/charging station before disconnecting
any Ay'C fifting.
/-
CONDENSER(Radiation of heat)
21-12

Heating and Air Conditioning
Air Mix Control Motor Test
1. Disconnect the 5P connector from the air mix
control motor.
2. Connect battery powertothe No. l terminal ofthe
air mix control motor, and ground the No. 2
terminal; the air mix control motor should run, and
stop at Max Cool. lf it doesn't, reverse the
connections;the air mix control motor should run,
and stop at Max Hot. lf the air mix control motor
does not run, remove it. then check the air mix
control linkage and door for smooth movement.
. lf the linkage and door move smoothly, replace
the air mix control motor.. lf the linkage ordoorstickor bind, repairthem as
needed.. lf the air mix control motor runs smoothly, go to
step 3.
AIR MIX CONTROL MOTOR
3.
4.
Measure the resistance between the No. 4 and
No. 5 terminals. lt should be between 2.1 k to
3.9 kQ.
Reconnect the air mix control motor 5P connector,
then turn the ignition switch ON {ll).
Using the Backprobe Set, measure the voltage
between the No. 3 and No. 4 terminals.
Max Cool about 1V
Max Hot about 4 V
lf either the resistance or voltage readings are not
as specified, replace the air mix cotrol motor.
21-34
Air Mix Control Motor Replacement
1.Remove the under-dash fuse/relay box (see page
22-491.
Disconnect the 5P connector {A) from the air mix
control motor (B). Remove the self-tapping screws
and the air mix control motor from the heater unit.
Remove the rod (C) from the arm (D) of the air mix
controi motor.
Install the motor in the reverse order of removal.
After installation, make sure the motor runs
smoothly.
3.
\'
,.,:l'

Mode Control Motor Test
Disconnect the 10P connector from the mode
control motor.
Connect battery power to the No. 1 terminal of the
mode control motor, and ground the No. 2
terminal; the mode control motor should run
smoothly and stop at Defrost. lf it doesn't, reverse
the connections; the mode control motor should
run smoothly and stop at Vent. When the mode
control motor stops running, disconnect battery
power immediately.
'1.
4.
MODE CONTROL MOTOR
3. lfthe mode control motor does not run in step 2,
remove it, then check the mode control linkage and
doors for smooth movement.
. lf the linkage and doors move smoothly. replace
the mode control motor.. lf the linkage ordoorsstick or bind, repairthem
as neeoeo.. lfthe mode control motor runs smoothly, go to
step 4.
Use a digital multimeter with an output of 1 mA or
less at the 20 k Q range. With the mode control
motor running as in step 2, check for continuity
between the No. 4,5,6,7,8, and 9 terminals and
the No. 10 terminal individually. There should be
continuity for a moment at each terminal as the
motor moves past each mode position.
lf there is no continuity for a moment at each
terminal. replace the mode control motor.
Mode Control Motor Replacement
2.
3.
1.Remove the ECM (see page 11-4).
Remove the relay mount bracket bolt, and move
the relays out of the way.
Disconnect the 10P connector {A) from the mode
control motor (B). Remove the self-tapping screws
and the mode control motor from the heater unit.
lnstallthe motor in the reverse order of removal.
lvlake sure the pin on the linkage is properly
engaged with the motor. After installation. make
sure the motor runs smoothly.
4.
21-35