2003 HONDA CIVIC srs

Relay and Control Unit Locations
a
\
Dashboard (cont'd)
L
SRS UNIT
EPS CONTROL UNITPGM.FI MAIN RELAY 1lWire colors: YEUBLK,LWHT/BLK, WHT/BLK and RED/YEL
PGM.FI MAN RELAY 2fwire colors: YEUBLK, ILYEUGRN, YEUBLK and GRN/YEL I
AIR/FUEL RATIO SENSOR RELAY[Wire colorsr WHT, WHT/RED, IOBN and BLK/ORN I
22-10

Connectors and Harnesses
Connector to Harness Index (cont'd)
Dashboard Wire Harness B
Collqctor or TerminalCavitiesLocatiol|ConnectstoNotesCableCombination light switchDriver's airbag inflatorlgnition key switchlgnition switchlmmobilizer control unit receiverPassenger's airbag inf latorSRS unit connector AWiper/washer switchUnder dash fuse/relay boxconnectorA lsee page 22,45)Under dash luse/relay boxconnector B (see page 22-45)Under'dash fuse/relay boxconnector C (see page 22-45)Under-dash fuse/relay boxconnector S lsee page 22-45)Under'dash fuse/relay boxconnectorX (see page 22 45)c401
c402
c403
G510
reel211716't9
18I
35
6
1
8
10
12
11
14
5
4
11418145
6
14
2
8
10
4
12
In steering column coverIn steering column coverIn steering column coverIn steering column coverIn steering column coverIn steering column coverUnder middle of dashUnder middle ofdashIn steering column coverUnder left side of dash
Under left side ofdash
Under left side of dash
Under lett side of dash
Under left side of dash
Under right side of dash
Under middle of dash
Under middle of dash
Under middle side of dash
Engine compartment wireharness (see page 22-'18)Floor wire harness (see page22-34JFloor wire harness (see page22-341Dashboard wire harness A(see oaoe 22-26)G40lUnder gauge assemblyBody ground via dashboard
22-30

Connectors and Harnesses
Connector to Harness lndex (cont'd)
Floor Wire Harness (Front sidel
Connec-tor or TerminalI Refuavftres Location connects to Nol6sDriver's seat belt switchDriver's side airbag inflatorDriver's side impact sensorLeft side seat belt buckle tensionerMemory erase signal (MES) connectorParking brake switchPassenger's seat belt switchPassenger's side airbag inflatorPassenger's side impact sensorRight side seat belt buckle tensionerSRS unit connector BSRS unit connector CUnder-dash fuse/relay boxconnector P {see page 22-45)Under-dash fuse/relay boxconnector O (see page 22,45)c402
c403
c453
c508
c509
c512
11l013121995374202111
'r8
22
23
2
14
1
6
3 I Under driver's seat2 i Under driver's seat2 I Left side offloor4 Under driver's seat2 Under dash fuse/relay box1 1 Middle offloor3 Under passenger's seat2 Under passenger's seat2 Right side offloor4 Under passenger's seat18 I Under middle of dash8 Under middle of dash18 Underdash fuse/relay box
8
]
Under dash fuse/relay box
10
I
Under middle of dash
4 Under middle of dash
6 Under middle of dash
4 Under middle of dash
6 Under middle ofdash
8
I
Under middle of dash
10 Under middle of dash
4 ] Unaer middle of aasn
Dashboard wire harness B{see page 22 30)Dashboard wire harness B(see page 22-30)ECM wire harness (see page22-321Dashboard wire harness A(see page 22-26)Dashboard wire harness A\see page 22-26)Dashboard wire harness A{see page 22-26)Engine compartment wireharness (see page 22 18)OPDS unit harness (see page22-421G551IL,nder passenger's seatBody ground via floor wire
22-34

Under-dash Fuse/Relay Box
Fuse
Number
AmpsWire ColorComponent(s) or Circuit(s) Protected
115ABLKA/VHTlgnition coils
2204WHT/REDAirlfuel ratio sensor, ECM
310ARED/BLUDaytime running Iights control unit {Canada)10ABLI(ORNAir/fuel ratio sensor relay, Alternator, CMP sensor, Cruise control main
switch, Cruise control unit. ELD unit, Evaporative emission (EVAP) bypass
solenoid valve, Evaporative emission (EVAP)canister purge valve,
Evaporative emission (EVAP) canister vent shut valve, Secondary H02S,
Vehicle speed sensor
5Not used
67.5AYEUGRNMoonroof control unit, Moonroof open and close relay, Power window
relaV
7204GRNMoonroof motor
I7.5AYEUREDAudio unit
910AGRNOPDS unit, Rear window wiper motor, Rear window washer motor, Rear
window wiper intermittent control unit
107.54YELBack-up lights, Cruise indicator light, EPS control unit, Gauge assembly,
Keyless receiver unit, Multiplex control unit, Security control unit
connector (optional)
117.5ABLIVORNABS modulator-control unit
127.5AYEUREDDaytime runnino liohts control unit (Canada)
1310APNKSRS unit't410ABLK/YE LA,,/C compressor clutch relay, Blower motor relay, Condenser fan relay,
Heater control panel, Power mirror actuator, Power mirror defogger(Canada), Radiator fan relay, Rear window defogger relay, Recirculation
control motor1ENot used
loNot used
1715AYE L/B LKECM, Fuel pump
B LK/YE L>H> Unrr
1815AYEUGRNAccessory power socket
197.5AYEUBLKTurn siqnal/hazard relav, Turn siqnal liohts
2030AGRN/BLKMultiplex control unit, Windshield washer motor. Windshield wioer motor21Not used
22204GRN/BLKPassenqer's window motor
2320A.G R N,A/VHTDriver's window motor
24Not used
25Not used
__^:Hr tl_l
f at-t
at I
r^,rl fl
!!;r -
!339,i;s!!sf Fnf : |rnITf
22-47

Ground Distribution
Ground to Components Index
GroundComponent or circuit qrounded
Batterv, Transmission housinq
E ngine
G 101ECM (PG is BLK; LG is BRN/YEL)
BLK: IAC valve, lgnition coils, Vehicle speed sensor, VTEC solenoid valve
BRNA/EL: Camshaft oosition (CMP) sensor. CKP sensor, TDC sensor. VTEC oil pressure switch
G 15']EPS control unit
G201ELD unit. Multiplex control inspection connector, Multiplex control unit, Power window relay, Rear
window washer motor, Right front parking light, Right front side marker light, Right front turn signal
light, Turn signal/hazard relay, Washer fluid level sensor (Canada) , Windshield washer motor,
Windshield wiDer motor
G202ABS modulator-control unit
G301
G401
Blower motor relay, Brake fluid level switch, Condensor fan motor, Cruise control actuator, Left front
parking light, Left front side marker light, Left front turn signal light, Radiator fan motor, Radiator fan
swrtcn
Combination liqht switch, lqnitlon kev srvitch, Wiper/wasfrer sr,virch
G402Left and riqht airbaq sensors, SRS unit
G 451Data link connector (DLC)
G501Clutch interlock switchm Clutch pedal position switch (for cruise control), Cruise control main switch,
Cruise control unit, Daytime running lights control unit (Canada), Driver's door lock knob switch,
Driver's door lock switch, Driver's power window motor, Heater control panel, Left power mirror
defogger (Canada), left side turn signal light, Moonroof control unit, Monroof open and close relays,
Moonroof position sensor '1, Moonroof seitch, Power mirror switch, Power transistor, Power window
master switch. SDotliqhts
G502Accessory power socket, Gauge assembly, Keyless receiver unit, lvlultiplex control unit, Right power
mirror defogger {Canada)
G503Audio unit
G551Driver's seat belt switch, Fuel gauge sending unit, Fuel pump, Memory erase signal (IMES) connector,
OPDS unit. Rioht seat belt switch
G552High mount brake light, License plate lights, Rear window defogger, Rear window defogger noise
condenser. Rear window wioer motor, Hatch latch switch
Back-up lights, Brake lights, Rear side marker lights, Rear turn signal lights, Rear window wiper noise
condenser, Rear window wiper intermittent control unit, Taillights
22-48

Under-dash Fuse/Relay Box
Removal and Installation
SRS components are located in this area. Review the
SRS component locations {see page 23-13) andprecautions and procedures (see page 23-14) in the SRS
section before performing repairs or service.
Removal
1. Make sure you have the anti-theft code for the radio,
then write down the frequencies for the radio's
preset buttons.
2. Disconnectthe battery negative cable, then
disconnect the positive cable, and wait at least
three minutes.
3. Remove the driver's dashboard lower cover (see
page 20-59).
4. Disconnect the connectors from the fuse side of the
under-dash fuse/relay box.
5. Remove the mounting bolt, and slide the under-
dash fuse/relay box (A) down from the bracket {B).
6. Disconnect the back side from connectors from the
back of the under-dash fuse/relay box, and remove
the fuse/relay box.
NOTE:The SRS connector is a spring-loaded lock
type (see page 23-1 1).
lnstallation
1. Installthe under-dash fuse/relay box in the reverse
order of removal and connect all connectors to the
under-dash fuse/relay box.
2. Installthe driver's dashboard lower cover.
3. Connect both the negative cable and positive cable
to the battery.
4. Enter the anti-theft code for the radio, then enter
the customer's radio station presets.
5. Confirm that all systems work properly,
6. Do the engine control module (ECM) idle learn
procedure (see page 11-139).
22-49

lgnition Switch
Test
SRS components are located in this area. Review the
SRS component locations (see page 23-13) andprecautions and procedures {see page 23-'l4) in the SRS
section before performing repairs or service.
1, Remove the driver's dashboard lower cover {seepage 20-59).
2. Disconnect the 5P connector from the under-dash
fuse/relay box.
WHT/RED
Wire side offemale terminals
BLK/WHTBLK/YEL
BLK/RED
Check for continuity between the terminals in each
switch position according to the table.
Terminal
p.J,i""-\
WHT/RED(ACC)
BLK/WHT YEL(BAT) flGl)
BLK/REDtrc2t
BLK/WHT(sr)
o (LocK)
| (ACC)o---o
[ (oN)
III (START)
c)-_H
o_H
lf the continuity checks do not agree with the table,
replace the steering lock assembly (see page'17-121.
22-53

I
I
Restraints
Restraints
Special Tools ............. 23-2
Seat Belts
Component Location Index ......................................... 23-3
Front Seat Belt Replacement ....................................... 23-4
Rear Seat Belt Replacement ........................................ 23-6
Inspection .................. 23-8
Child Seat Tether Anchor Removal/lnstallation ........ 23-9
SRS (Supplemental Restraint Systeml
Component Location Index ......................................... 23-13
Precautions and Procedures ,,.,......... 23-14
General Troubleshooting Information ....................... 23-23
DTC Troubleshooting Index .............. 23-28
Symptom Troubleshooting Index ............................... 23-30
System Description ................. ........... 23-31
Circuit Diagram ......... 23-34
DTC Troubleshooting ............... .......... 23-36
SRS Indicator Circuit Troubleshooting ....................... 23-105
Component R e place me n(/ln s pect io n After
Deployment ..............23-112
Driver's Airbag Replacement ............ 23-113
Front Passenger's Airbag Replacement ..................... 23-1 14
Side Airbag Replacement .................. 23-115
Airbag Disposal ....................... ........... 23-116
Cable Reel Replacement .................... 23-119
SRS Unit Repfacement ....................... 23-122
Side fmpact Sensor Replacement ..........,.................... 23-123
OPDS Unit Replacement .................... 23-124
Front fmpact Sensor Replacement .............................. 23-125