2003 HONDA CIVIC outlet

Heating and Air Conditioning
Heater Unit/Core Replacement (cont'd)
8. Remove the dashboard {see page 20-66).
9. Disconnectthe connectors (A) from the blower
motor, the recirculation control motor, the mode
control motor, and the power transistor, then
remove the wire harness clips (B) and the
connector (C). Remove the self-tapping screws and
the bracket (D).
Disconnect the connectors (A) from the evaporator
temperature sensor and the air mix control motor,
then remove the wire harness clips (B) and the
connector (C). Remove the self-tapping screw and
the cover (D). Disconnect the heater valve cable (E).
10,
7t,
21-44
11. Remove the mounting bolts, the mounting nuts,
and the heater unit.
Remove the self-tapping screws and the expansion
valve cover (A). Carefully pull out the evaporator
core (B) so you don't bend the inlet and outlet pipes.
Remove the grommet (C), then remove the self-
tapping screws and the flange cover (D). Bemove
the self-tapping screws and the pipe cover (E), then
carefully pull out the heater core (F) so you don't
bend the inlet and outlet oioes.
@
5x 1.0 mm9.8 N.m11.0 kgl m,7.2 tbf.ftl
12.

13. Installthe heater core and the evaporator core in
the reverse order of removal.
14. Installthe heater unit in the reverse order of
removal, and note these items:
. Do not interchange the inlet and outlet heater
hoses, and installthe hose clamps securely.. Refillthe cooling system with engine coolant (see
page 10-6).. Adjust the heater valve cable (see page 2'l-461.. Make sure that there is no coolant leakage.. Make sure that there is no air leakage.. Refer to evaporator core replacement {see step 6
on page 21-42).. Do the engine control module (ECl\4) idle learn
procedure (see page 11-139).. Enter the anti-theft code for the radio, then enter
the customer's radio station Dresets.
21-45

A/C System Tests
Pressure Test
Test resultssvmotom3DGaUSeDischarge (high)pressureabnormally high
After stopping compressor, pressure
drops quickly, and then continues toAir in systemRecover, evacuate (see page 21-54),and recharge with specified amount{see oaoe 21 55).
Beduced or no air flow throughcondenserClogged condenser or radiatorfinsCondenser or radiator fan not
CleanCheck fan voltage and rpm.Check fan direction.
Line to condenser is excessively hot.Restricted flow of refrigerant inReplace restricted lines.
Discharge pressureHigh and low pressures are balancedsoon after stopping compressor, Lowside is hioherthan normal.
. Faulty compressor dischargevalve. Faultv comoressor seal
Beplace the compressor.
Outlet of expansion valve is notfrosted, low pressure gauge indicatesFaulty expansion valveMoisture in system
. Replace the expansion valve.. Recover, evacuate for at least30 minutes, and recharge withsDecified amount.
Suction (low)pressureabnormally low
Expansion valve is not frosted, andlow-pressure line is not cold. Lowpressure gauge indicates vacuum,
' Frozen expansion valve(Moisture in system). Faulty expansion valve
Recover, evacuate for at least30 minutes, and recharge withspecified amount.Beplace the expansion valve.
Discharge temperature is low, and theair flow from vents is restricted.Frozen evaporatorRun the fan with compressor off, thencheck evaooratot temoerature sensor.
Exoansion valve is frosted.ean or reolace,
Receivetdryer outlet is cool, and inletis warm (should be warm duringooeralton),
Clogged receiver/dryerReplace receaver/dryer.
Suction pressureabnormally highLow pressure hose and check joint arecooler than the temperature aroundevaoorator,
Expansion valve open too longBepair or replace.
Suction pressure is lowered when..nrlenser is cooled bv water.Excessive refrigerant in systemRecover, evacuate, and recharge withqnp.ifie.lamo'rnr
High and low pressure are equalizedas soon asthecompressor is stopped,and both gauges fluctuate while
Faulty gasketFaulty high pressure valveForeign panicle stuck in high
Replace the compressor.
Suction anddaschargepressuresabnormallv hioh
Reduced air flow through condenser.. Clogged condenser or radiatorfins' Condenser or radiator fan notworkino orooerlv
CleanCheck voltage and fan rpm.Check fan direction.
Suction anddischarge pressureabnormally low
Low-pressure hose and metalendareas are coolerthan evaoorator,Clogged or kinked low-pressurehose oartsRepair or replace.
Temperature around expansion valveis too low compared with that aroundClogged high-pressure lineRepair or replace,
Fefrigerant leaks:omoressor clulch is dirtv.:omoressor shaft seal leakinqReolace the comDressor,
lomoressor bolt(s) are dirtv.no around bolt(s)Tiohten bolt{s) ot reolace comDressor,
;omDressor oasket is wet with oil.ietnoace the comoressor.
(cont'd)
21-57

Service Manual lndex
(cont'dl
Power Window Switch, Passenger'slnput Test .............-......
Replacement...,-.-.-...,..
Radialor Cap
Rocker Arm AssemblyRemovalD;sassembly/Reassembly
Specifications6-26 (See section 2)22-13022 13222-133..................... 6-27
ComponentLocation Index ..............22 124Circuit Dia9ram .................. ............... 22 125
Ouaner Window Glass8ep1acement ......................................... 20-29
lnstallation6-38
Rocker ArmsTestInspecton6-28
Roof MoldingsReplacement
Seat BeltsComponent Location Index ................... 23-3
Seat 8ehs, FrontReplacementrnspec!on
sRsComponent Location Index ................. 23-13Description ....................................... 23-31Circuit D;agram ... .... ...........2334lnspection/Replacemenl ................... 23 1 126-7
SRS lndicator CircuilTroubleshooting
Startel
Stabilizer BarReplacementFront SuspensionRear Suspension
Stabilizer LinksRemoval/lnstallationFront SuspensionRear Suspension
23 105oSRS UnitReplacement..-.................................... 23-122s
R
1A-1718-30
18 1818-31RadiatorTest......23-9
23-1Replacement ...........
Radiator and Condenser FansCommon CircuitTroubleshooling......... ..... .........21 29
10-310-10Seat Behs, RearReplacement
Seat Cover, FrontReplacement
Seat Cushion Cover, R6ar10-3Replacement
ReplacementTest
Test
20-75
20-84
Overhaul
Starter SolenoidTest..-.-...4-7
Radiator Fan AssemblyTestSeat, Driver'sRemovaf/lnstaf lation ............................ 20 1 1Disassembly/Reassemb1y ................... 20-73
Sedt, Faont Passenger'sDisassembly/Reassemb1y ................... 20-74
Seat, RearRemoval/lnstallation ............................ 20-80
Seat-back Cover, Reer
Starting SystemComponent Location Index...............-..... 4-3CircuitDia9ram ........................................ 4 4
\'{........................ r0-4
Radiator Fan CircuitTroubleshooting
Radiator Fan SwhchReplacementTest
Radiator Fan Switch CircuitTroubleshooting
Rear Air OutletReplacement
Circuil DiagramTest
Rear Window D€rogger WiresRepair
RearWindow GlassReplacement
Troubleshooting10-14
10-1710-17
10 16
17 -3
11-4
17-9
SteeringComponent Location Index................-..Inspectaon ...................
Steering ColumnRemoval/lnstallationReplacementInspection11 11
17-5117 5517 63
20 68
Seat-back Latch, ReaI2Q-104Replacement
Seat-back Striker. RearReplacement
Steering GearboxRemovalOverhaulRear Window DefoggerComponentLocalion Index ..............22 104lnstallation
Steering Hanger BeamReplacement
Steering LinkageInspefiron
Steering LockReplacement
Steering Rack GuideAdiustment
22-10522 106
22-106
SeatsComponent Location Index....-............ 20-70
Shift ForksInspectton13,21
20-25
2l-3621 36
21 25
Disassembly/Reassembly ................... 13-22
Shitt Lever TrimRemoval/lnstallation ............................ 20 61
.....11-12
SecirculationReplacementControl Motor17-13Test.....
Recirculation Control Motor CircuitTroubleshooting
Side Airbag, Drivel'sReplacement
Side lmpact SensorsReplacement
Spark Plugs
23-115
23 123
Side Marker LightRep1acement......................................... 22-A3
17417-6Disassembly/Reassembly ..................... 17 71nsta11ation .............................................. 17-8
SublramesReplacement
Removal
RefrigerantReplacement ..-.-.-...................... 21 53, 54, 55Test ........................................................ 21-56
Retrigerant OilReplacement...............................-........... 21-6. .._..4_19
20 112

SuspensionAdjustment................-............................184 VComponent Location Index................. 20-17
Windshield GlessReplacement............-..............-............. 20 19
Synchro Ring, Triple-coneInspection...............-..........................1339 ValveGuides
Synchro SleeveInspectaon/Reassemb1y ....................... 13 39
Inspection ............-.-................................ 6 32Beplacement ..........-................................ 6 33 Wiper Intermittent Control Unit,Rear WindowInput Test
T
Valve SeatsRepair ...................................................... 6 35.....22-134
WiDer Motor, Rear WindowRep1acement....................................... 22-1 46Adjustment .-.-.......Removal ...-...-......................................-... 6-31 WiDer Motor, windshield6-9
.....6-32 Test.......-..........-.....-.............................22-143Taillight
ThermostaiTest ........................
Inspec!on
Vehicle Speed Signal Circuit
VTC System
Wiper/WasheI
Wi.ing System
10 4 Troubleshooting .....-... ..........................22-65 Component Location In dex ..............22-134Replacement.....-...-....... ...................... 10 IvssThrottle BodyTest ..................Removal/lnstallation .. . . . . . .. ... 11-'165 VTC ActuatorDisassembly/Feassemb|y................-11-166 Inspection
Circuit Diagram .......................... 22-136, 131
Replacement -.............. ............ .............22 61 Wiper/Washor SwitchTesVReplacement .............................. 22-1 40
.................68 WireHarnesses
11-160
Replacement ........................................... 6 24 (Seefirstpageofthislndex)Throttle CableAdjustment ...... ...-.................... 11163 VTC Oil ConlrolSolenoid ValveRemoval/1nsta11ation..........................11164 Removal....-...-... |1-127 HowtoIn{ormation ...............................223Belay and Control UnitLocations .-....-.............. -.-.-....- 22-7, 4, 1 1, 12Beplacement.........-............................... 1767 ComponentLocationlndex.............. 11-117Tie-rod Ball Joint Boots
lnstallation
Replacement
Turn Signal/Hazard Relay
tsTiming/Cam ChainVTEC Solenoid Valve...612 Femoval/lnspection....-......................11-128................ 6 15
Timing/Cam Chain Auto-tensionelRemoval/1nsta11ation..............................6-19 W
Troubleshooting{See first page ot this Index)
Turn Signal Light
Timing/Cam Chain CaseOil SealInstallation......................-......................6,21 Washer Fluid Level SwitchTesVReplacement .............................. 22 1 44Trailing ArmsRemoval/lnstallation .............. . . . . ..... 18 33 Washer Fluid ReservoirReplacement ....................................... 22-1 46tnmComponent Location lndex ................- 20 49 Washer Motor, WindshieldRemoval/lnstallation ..-.......20 50,51,52,53 Test -..............-.............. ........................22 144
Washer Tube, WindshieldReplacement......-...-............................ 22 1 47
W.ter Outlet.........22 A4 Installation ..................-........................... '10-9
InputTest........22-87 lnstallation................ 10IWeter Passage
Wheels andTires
Turn Signal/Hazard Warning Lights Water PumpComponent Location In dex .................22 85 Inspection ........................... .. . . . ....... 10 5Circu it Diagram ................-................... 22-86 Replacement .-......................................... 10 5
U
WheelBearingsInspec|ion ....................................... ....... 18 8
Wheel Speed SensorsInspection ..-..,.,.,,.,,,,,.,.,,,...................... 19-59Replac€ment ........-....... . . . . . . .. -.... 19-59UndeFdash Fuse/R€lay BoxRemoval/lnstaf lation ............................ 22-49
Upper ArmsRemoval/|nsta11ation................. ... 18-32
],sInspect|on