2003 HONDA CIVIC Workshop Manual

sRs
SRS Unit Replacement
Removal
'1. Disconnect the battery negative cable, and wait at
least 3 minutes before beginning work.
2. Disconnect the driver's and front passenger's
airbag connectors (see page 23-21).
3. Disconnectthe side airbag connectors (see page
23-211.
4.Disconnect both seat belt tensioner connectors (see
page 23-22) and both seat belt buckle tensioner
connectors {see page 23-221.
Remove the dashboard center lower cover (see
step 2 on page 20-57).
Pull down the console carpet on the passenger's
side, then remove the Torx bolt (A)from the SRS
unit.
7. Pull down the console carpet on the driver's side,
then disconnect the connectors. Remove the Torx
bolts (A), then pull out the SRS unit.
23-122
lnstallation
1, Installthe new SRS unit (A)with Torx bolts (B), then
connect the connectors {C) to the SRS uniu push
them into position until they clicks.
NOTE: When tightening the Torx bolts to the
specified torque, be careful to turn them in so that
their heads rest squarely on the brackets.
Reinstall the dashboard center lower cover (see
step 2 on page 20-57).
Reconnect the driver's and front passenger's airbag
connectors (see page 23-21]'.
Reconnect the side airbag connectors (see page 23-
211.
Reconnect both seat belt tensioner connectors (see
page 23-221 and both seat belt buckle tensioner
connectors (see page 23-22).
Reconnect the battery negative cable.
Initialize the OPDS unit (see page 23'27).
After installing the SRS unit, confirm proper system
operation: Turn the ignition switch ON (ll); the SRS
indicator should come on for about 6 seconds and
then go off.
4.
6.
8.
7.
9.8 N.m (1.0 kgf m, 7.2 lbf ft)

)
)
Side lmpact Sensor Replacement
Removal
1. Disconnect the battery negative cable, and wait at
least 3 minutes before beginning work.
2. Disconnect the appropriate side airbag 2P
connector (see step 4 on page 23-21).
3. Remove the seat assembly (see pa ge 20-71J.
4. Remove the front door silltrim and the B-pillar
lower trim panel (see page 20-50).
5. Disconnect the floor wire harness 2P connector
from the side impact sensor.
6. Remove the Torx bolt (A) using a Torx T30 bit, then
remove the side impact sensor (B).
)
lnstallation
1. Install the new side impact sensor with a new Torx
bolt (A), then connect the floor wire harness 2P
connector {B) to the side impact sensor {C).
2.
3.
Reconnect the negative battery cable.
After installing the side impact sensor, confirm
proper system operation:Turn the ignition switch
ON (ll); the SRS indicator should come on for about
6 seconds and then go off.
Install all removed parts.
23-123

sRs
OPDS Unit Replacement
NOTE: Review the seat replacement procedures in the
body section before performing repairs or service.
Removal
1. Disconnect the battery negative cable. and wait at
least 3 minutes before beginning work.
2. Disconnect the passenger's side airbag harness 2P
connector (see step 4 on page 23-2'll.
3. Remove the front passenger's seat assembly (see
page 20-71)and seat-back cover (see page2O-15],.
4. Remove the cover (A), then disconnect the OPDS
unit harness 8P and sensor connectors (B) from the
OPDS unit.
5. Remove the two screws (C) and the OPDS unit (D).
23-124
Installation
1. Place the new OPDS unit (A) on the seat-back frame.
Tighten the two screws (B), and connect the OPDS
unit harness 8P and sensor connectors (C) to the
OPDS unit. Reinstallthe cover (D).
2.
4.
1.
Installthe seat-back cover (see page 20-75).
Install the seat assembly (see page 20-71), then
connect the side airbag harness 2P connector,
Reconnect the battery negative cable.
Set the seat-back in the normal position, and make
sure there is nothing on the front passenger's seat.
Initialize the OPDS unit (see page 23-27).
After installing the OPDS unit, confirm proper
system operation: Turn the ignition switch ON (ll);
the SRS indicator should come on for about 6
seconds and then go off.

)
1.
Front lmpact Sensor Replacement
Removal
Disconnect the battery negative cable. and wait at
least 3 minutes before beginning work.
Disconnect the driver's airbag 4P connector lsee
step 2 on page 23-21), the front passenger's airbag
4P connector (see step 3 on page 23-21), both seat
belt tensioner 2P connectors (see step 5 on page
23-221, and both seat belt buckle 4P connectors (see
step 6 on page 23-22).
Remove the front inner fender (see pag e 2O-1O21.
Disconnect the engine compartment wire harness
2P connector (A), and remove the two Torx bolts (B)
using a Torx T30 bit, then remove the front impact
sensor {C).
2.
)
)
Installation
1. Installthe new front impact sensor with new Torx
bolts (A), then connect the engine compartment wire
harness 2P connector (B) to the front impact sensor
{c).
A9.8 N.m
Reconnect the battery negative cable.
After installing the front impact sensor, confirm
proper system operation: Turn the ignition switch
ON (ll); the SRS indicator should come on for about
6 seconds and then go off.
(1.0 kgf.m,7.2lbf.ftl
23-125

Service Manual lndex
)s
NOTE: Referto the lollowing listto look up A/C Pressure Switch CircuitDTCS, symptoms, fuses, connectors, wire Troubleshooting ......... ...-.-....-...-.-.-....-..21-32 Bharnesses, specifications, maintenanceschedules, and general serviceinlormation:
DTC Troubleshooting Indexes
A/C Signal CircuitTroubleshooting.........................-...... 11-'133 Back-up Light SwitchTest .......................................................... 13'3A/F lAir Fuel Ratiol SensorABS/TCS Components ........................ 19-34 Replacement ....................................... 1 1-113 Back-up Li9ht3EPS Components ................................. '17-22 Circuit DiagramFueland Emissions11-i A-Dillar Corner Trim
ABS Indicator Circuit
Heating/Ventilation ................................ 21-9 Replacement ...............-.....-..............-.... 20,96 Ball Joint BootssRS ........................................................ 23-28Replacement ......
... 19-52 Ball Joints
22-75
18 16
Remova1.............-.......... . ...........18-10Symptom Troubleshooting Indexes TroubleshootingABS/TCSComponents........................ 19 35Cruise Control System ..........................4 38 ABS Modulator-contml UnitEPS Components ................................. 17-23 Bemoval/lnstallation ............................ 19-57 BettervFan Controls10,12
Accessory Powor Socket Front
Blowor Pow€r Transistor
.......22 50
Blower UnitRemoval/lnstallation ............................ 21-39
Fuel and Em issions .............................. 11-10 ABS/TCS ComoonentsHeating/Ventilation..............................21 10 Component Location Index ................. 19-30 Beverage Holder
SRS ........................................................ 23'30 CircuitDiaqram.......................... 19'42Blower MotorReplacement .....21 41
21-38
Power 0istribution ...............................22-46 TesVReplacement .............................. 22'149Under-dash Fuse/Relay Box ............... 22 45Under-hood Fuse/Belay Box ...............22 44 Accessory Power Sockets
Fuse/Relay lndexes
(to harness)
Connector and Wire Harness lndexesComponent Connectors
Circuit Oiagram .................................. 22-149
Air Cleaner......2214 Rep1acemen1.....................................11-162
Air MixControl MotorMeintenence section .................... Section 3 Replacement ......................................... 21'34 Brake CelipersTest......................21-34 Overhaul19-14,23Gene.al lnlormation section........ Section 1
21.57
Airbag. Driver's
Ahernator FR Signal CircuitTroubleshooting .... .........-..........11 134
AntennaReplacement
Inspection ............................................. 19-24Rep|acement................. .................... 19-25
Bieke Meder Cylinder
Irake Discs
A
Replacement ....................................... 23 1 'l3 Inspection .................... ................... 19-13,22Repair ...........-...................................... 23 1 16Brake Fluid Level SwitchAirbag. Front Passenger's TestBeplacement....................................... 23-1 14AIC Brake LightsComponent Location fndex ...................21-3 Altemator CircuitDiagram....................................22-74Description.....................................-....21'1'l Beplacement ................ ........................... 4 29CircuitDiagram....................................21-14 Overhaul .................................................4-30 Brake Lines and Hoses
19.10
A/C CompressolReplacement .......-...-............................. 21 -41
A/C Compr€ssor ClulchRep1acement......................................... 19-15.........22-103 Inspection ............................................. 19-16Inspecton........Overhaul ..........
A/C CondenserReplacement,.,
21-442l-49 Audio Unit
Replacement
Brake PadsRemoval/lnstallation .. ........................22-100 Inspection/Rep1acement................ 19-11,20A/C Compressor Clutch CircuitTroubleshooting ................................... 21-30 Audio Unit Connector Brake Pedal22101 Adjustment..............19,6ArfC Comoressor Relief ValvcReplacement ..........-...-.......................... 21-51 Audio/Entertainment
A/C Compr$sor Thermal Protector Circuit DiagramReplacement............-............................ 21-51
Component Location In dex .................22-9A Test .......-.............. 22-84Breke Pedal Posilion Switch
Brake Pedal Position Switch Signal Clrcuit11-137
.....21 52
A/C Condenser Fan CircuitTroubleshooting ................... . . . . . .....21-28
)s
Troubleshooting
(cont'd)

Service Manual Index
(cont'dl
Brake System Indicator CircuitCircuit DiagramConventional Brake Components..... 19-9TroubleshootingABS/TCS Components .... ....... ...... 19-55
Bulb, GeugeRep|acemenl................ .. ............2263
Bulb, HeadlightReplacement ......................................... 22-A1
Bumper, FrontRemoval/1nsra11ation ............................ 20 85
Bumper, RearRemoval/lnstallation... ... . .....20.86
Combination Light SwilchTesVReplacement ..............................22 80
Connecting Rod BearingsRep|acement...................... .......-....7-8
Connecting Rod Boltsf nspection ....................-.-.-.-.................... 7 -24
Connecting RodsInspection ........,,.,.,...,.,.,.,.,,,,.,,,.,.,.,.,.,.,.,.. 7 5
Connectors(See first page of this Index)
Conventional Brake Component3Component Location Index ................... 19'3Troub1eshootin9 ..................................... 19-4
Cylinder Head AssemblyComponent Location Index ..................... 6-3Inspection ................................................. 6 6Removal ..........&23Insta11alion .............................................. 6 39
Cylinder Head Cover8emova1 ..............-.-................................. 6-22Installation ..............................................6-41
Cylinder Head, BareInspecton..,.....,.
D
c
Cable ReelReplacement....................................... 23-1 19
CamshaftInspection .......................-...-................... 6-29
Cargo Area LightTesVRep1acement ................................ 22-97
CarpetReplacement.....-...-..... ... ......-.20-55
Ceiling Light-estrReplacement ................................ 22.96
Charging SystemComponent Location Index................... 4-20Circuit Diagram ...................................... 4-21
19-8
CoolantInspection .................. ..... .. 106Replacement................. ... . .. 10 6
Coolant Temperature Gat|geTroub1eshootin9................................... 22 64
Cooling SyslemComponent Location Index................... 10-2
Countershaft BearingsReplacement............... ..................... 13-42
Cowl CoverReplacement............... .. ..... ....20-95
CrankshaftRemoval .................................................. 7 -12
Repair ..................
Inspec(on,,,,,........1 14
Dampers. FrontReplacement................ ..................... 18 20
Oampers, RearRep1acement......................................... 18-34
Dash VentsBemoval/lnstallation .-.......................... 20-64
DashboardBemoval/1nsta11ation ............................ 20-66
Oashboard Center PanelRemoval/1nstaf 1ation ............................ 20 62
Dashboard Lower CoverRemoval/lnstallation ...................... 20-59, 63
Dashboard Under CoverRemoval/lnstallation ............................ 20 60
Diff erential Carrier Bearings, M/TRep1acement,,......,...,...,.,.,,,.,.,,,........,.,. 13-54
Ditferential Oil Seals, M/T8ep1acement......................................... 13-55
Differential Pinion Gears, M/TInspection .,....-,.,,,.,..,.-,.,.........,.,.,,, 13 53
OLC CircuitTroubleshooting ................................ 1 1-109
Door GlassRep1acement.,.,,,,,,,,,,,.,,,,,,,,,,.,.,.,.,.,,,,,,.,, 20-9Adjustment. .. .....................20-11
Door Glass WeathelstripsReplacement .............-.. . . . ..........-......20 10
Door LatchesReplacement ..........-.-.............................. 20-7
Door Lock ActuatorsTest ...................................................... 22-154
Door Lock Knob SwitchesTest -......... . . . - . . . . . . . . ......22-160
Door Lock SwitchesTest ........... ............................ ............. 22-160
Door Outer HandlesRep1acemen1 ........................................... 20-6
3
Child Seat Tether AnchorRemoval/lnstaf lat;on .. ........................ 23 11
CKP (Crankshaft Position) SonsorReplacement....................................... 1 1-116
ClutchComponentLocation 1ndex................... 12-3Rep1acemen1........................................... 12-9
Clutch InteYlock SwitchTest.....-........-...-............. ...---.-.......4-6
Clutch Master CylinderReplacement........................................... 12 5
clutch PedalAdjustment ............................................. 12 4
Clutch Pedal Position SwitchTest.,.,,,,,.,,,.,.,,,,,,.,.,,,,,,,,,.,,,,,.. ......445
lnstallation.................. . ..... .....1-24
Crankshalt Main BearingsReplacement........-.-.................................. 7-6
CrankshaftOil Seal,Transmission End1nstanation .............................................. 7 28
Crankshafl PulleyRemoval/lnstallation -..................-.......... 6-1 1
Cruise Control Actuator
Troubleshooting
Clutch Slave CylindorBeplacemeit...
...................... 4-43
.......4-22
Test
12-1
RepIacement........................................... 4-44
Cruise Control Actuator CableAdjustment ............................................. 4 45
Cruise Control Main SwitchTesVRep1acement .................................. 4 42
Cruise Control Set/Resume/Cancel SwitchTesVRep1acement .................................. 4 42
Cruise Control SystomComponent Localion Inde\................... 4-36Circuit Diagram ....-................................. 4 37
Cruise Control UnitInputTest.............................. .. ...4,40CMP {Camshaft Positionl Senso]Replacement....-...-.............................. 1 1-128
CMP (TDC) SensorsReplacement............-.......................... 1 1 1 14

)
Orive BehInspecaron................ 4-26
Door PanelsRemoval/lnstallation -............................. 20-4
Door Sash TrimRep1acement......................................... 20 10
Door StrikersAdiustment ........................................... 20-13
Door Weatherst psBeplacement...........-............................. 20 1 1
EPS Conirol UnitRemoval/1nsta11ation ..................-......... 17-67
EPS Indicator CircuitTroubleshooting ................................... 17 -47
EPS MotorRemoval/lnstallation .-.......................... 17-49
EVAP CanisterRep1acement......................... ......... 11,189
EVAP Control Syst€mComponentLocation Index ..............'11-170
EVAP Two-Wey ValveTest ..........-.............-............................ 11 186
Evaporetor CoreRep1acement........................ . ... 21-42
Evaporator Tomperature SensorReplacement......................................... 21 -37Test..................................... ..........2137
EvaporrtoFHeater UnitReplacement........................................ 21 43
Exhaust ManifoldRemoval/1nsta11ation ................................ I 7
Exhaust Pipe8ep|acement............................................. 9-8
Front SpeakersRep|acement....................................... 22-102
Front SuspensionComponentLocation Index................... 18-3
Fueland EmissionsDescription ........................................... 11-12
Fuel Fill DoorAdjustment ..........-................................ 20 93
Fuel Fill Door OpenetBeplacement........................ . ............ 20.109
Fuel Fill Door Opener CableReplacement....................................... 20- lO7
Fuel FilterReplacement....................................... 1 1-152
Fuel Gauge Sending UnitTest ......................-.-..........-.................. 11'156
Fuel Injection Syslem (PGM"FIlComponent Location 1ndex................. 11-49
Fuel IniectorsRep1acemen1....................................... 1 1 1 1 l
Fuel Lines and HosesInspection .......................................... 1 1'146Removal ....................... . .. . .... 11-149Insta|1ation .......................................... 1 1 150
FuelPipe ProtectolReplacement....................................... 20-104
Fuel Pressure RegulatotReplacement....................................... 1 1-152
Fuel Pulsation DamperReplacemenl................................... 11 154
Fuel PumpReplacement,,,,,.,.,.,,,.,,,,,,,,,,,,.,.,.,,,..,.. 11-153
Fuel Pump CircuitTroubleshooting -.......-....................... 1 1-141
FuelSupply SystemComponent Location lndex .............. 11 140Adjustment................................... 11-144Test........-...-................. ... ............- 11-145
FuelTankBeplacemenl.............. . ..... .. 11 155
Fuel Tank Vapor ControlValveTest ......................-....... ... . . 11-187Replacement,,.,,...,.,,,.,.,,,,... .. .. 11 189
Fuses{See first page ofthis Index)
)
Rep|acement................. ..................... 4 26
Drive Belt Auto-tensionellnspection ............................................... 4 21Rep1acement.................................... ..4-28
Driver's PocketRemoval/lnstallation -........................... 20-60
Driver's TrayRemoval/lnstallation .........................-.- 20-65
DRL {Daytime Running LightslControl Unitlnput Test .................... ........ . . . ......22-16
DTCs(See first page olthis Index)
Dust and Pollen FillerReplacement......................................... 21-39
Dynamic Damper, DriveshaftsReplacement........................................... 16-8
ECT SensorReplacement.,.,,,.,.,,,,,,,,,,,,,,................ 1 1-1 14
El€ctrical Power Steering IEPS)Signal CircuitTroubleshooting ........ ... .. 11-135
EmblemsReplacement......................-................ 20-100
Engine AssemblyRemova1 .................................................... 5 2Installation ............._.................................. 5-9
Engine Block AssemblyComponent Location Inder ..................... 7.3
Engine Block, BareInspect|onRepair
Fan ControlsComponent Location Index................. 10'l 1Circuit Diagram .. ..... . .. . .................. 10 13
Fender Fairing, FrontReplacement...-................................... 20-103
Final Driven Gear. M/TReplacement.... . . ................................ 13-53
FrameRepair Chan............ ... ....................... 20 11 4
Frame StiffenelReplacement......-................................ 20- J'13
Front ConsoleRemoval/lnstallation ............................ 20 5lDisassembJy/Reassemb|y ................... 20 58
Front DoorsComponent Location Index................... 20-2Adiustment ........................................... 20.12
Front Driveshaft AssemblyInspeclion .................... ... ....16 3Remova1...................-...... ... .....16-3Disassembly ............................... .....165Resassemb|y ................................-......... 16-9Insta11arion ........................ ...... ............ l6 17
Front lmpact SensorsRep1acement............................ ...23 125
................7-15................1 11
)
Entry Light Control SystemComponent Location Index ...............-. 22-89Circuit Dia9ram .................................... 22 90
EPS ComponentsComponent Location 1ndex..........-...... 17-!7Description ........................ ...... ..17-24Circuit Diagram11 26(cont'd)

Service Manual Index
(cont'dl
Gauge A3semblyReplacement......................................... 22 64
Gaug€sComponent Location Index ..........-...... 22 54How-to lnformation ........................22-56Circuit Diagram22-54
Heater Valve CableAdjustment ...................... .................... ?1-46
High Mount Brake Light8ep|acement......................................... 22 82
Hood
lmmobilizer SystemComponent Location In dex .............. 22-162
\
G
Description
Genoral Information(See seclion 1)
Glove BoxRemoval/1nsta11ation .......................-.... 20-63
GrilleReplacement...........-............................. 20-94
Hood lnsulatorReplacement......................................... 20-89
Hood LatchRep1acement................... ..........20 108
Hood Opener CableComponentLocation Index ..............20 105Replacement ................ . . ........... .....20 106
Hood SealBeplacement.-...........................-........... 20-88
HornTesVReplacement . . ................ ...... 22-122
CircuitDiagram ...........................22-164Troubleshooting ............................ 22,165
Inner Fender, FronlRepf acemenl....................................... 20-102
Inside Rearview MirrorReplacement..........-.............................. 20 16
Instrument PanelRemoval/1nsta11ation................. ....... 20-59
Intake Air Bypass ControlThermal ValveTesr................................ ..... ..11-161
Intake Air SystemComponent Location Index ...-.-........ 11-159
Intake ManitoldRemoval/1nsta11ation ................................ I 2
lntermediate Shaft AssemblyRemova1 ................-.-...-......................... 16-19Disassemb|y................... ... ......-.... 16,20Resassemb|y ........................................ 16 22Installation .........-...-.............................. 16-24
Keyless Entry Transmitter
Adjuslment
H
Adiustment .......
Hatch Handle
Horn SwitchTest ............-........
HornsComponent Location IndexCirc!it Diagram
H02S. SecondaryReplacement
..............22-120Replacement
22-122
22 12120-110
20-'110Hatch LatchReplacement$
K
Hatch Latch Switch
.... 11 113
HubsReplacement. ... .................................. 1A 26Test
Test
Replacement
Hatch Support StrutsBeplacement.....
Hatch WeatherstrioReplacement....
Hazard Warning Switchtest
ldle ControlSystemComponentLocation Index .............. 11-129Inspection,.,.........-.......,.,.,,,,,,.,,,.,.,..... 1'l 138
lgnition CoillslBemoval/lnstallation ...............-.............. 4 18
22-161Test ...................................................... 22 161
Keyless Entry/Security Alarm SystemComponenl Location Index .............. 22 150Circuil Diagram ................. . .............. 22 151
Keyless Receiver Unitlnput Test ............................................ 22-153
Knock SensorReplacement......-................................ 1 1 115
KnucklesReplacementFront Suspensron ............................. 18-1 1Rear Suspension ........ .................-... 18-28
Repair ...............
H.tch Lock Actuator22-159
Hatch Lock CylinderRep|acement....................................... 20,111
Hatch SpoilerIAT {lntake Air Temperature} SensorReplacement.,.........-...'11 115
20-91
20-92
.................... 22_88lgnition Key LightTest,,.,,,,.,...,......-.
H6adlightAdjustmentlgnition Key Switch
....................... 22-91
....................... 22-91..22-78TestReQ\ace$entlgnition SwitchTest .,,,.,.,.,,,,.,.,.......22-53License Plate LightReplacement...........-... - ... .....22-83
License TrimReplacement..................-...-..........-....... 20-98
Lights, ExteriorComponent Localion Index.................22 68
Lights,InteriorComponent Location Index................. 22-94CircuitDiagram .. .. ...... .... 22-95
HcadlightsCircuit Diagram .............................. 22-71, 72
HeadlinerRemoval/lnstallalion ............................ 20-54
Heater ControlPanelRemoval/1nsta11ation ............................ 21-38
Heater Control Power and Ground CircuitsTroubfeshooting......... .......................21-27
lgnition SystemComponent Location Index ................... 4-15CircuitDia9ram .................................... 4'161nspection ............................................... 4-17
lmmobilizer Control Unit-Receiver
J
22-161