srs HONDA CIVIC 2003 7.G Owner's Manual

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

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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

Restraints
\SpecialTools
@
*1: Included in SRS Tool Set 07MM'SM50008*2: Use with the stacking patch cords from T/N 07SAZ-0010004, Backprobe Set.
oo
ro
\J
Gl
' 07HAZ-SG00500Deployment Tool
SCS Service Connector
SRS Inflator Sim u lator
SRS Simulator Lead C
Backprobe Adapter, 17 mm
SRS Simulator Lead E
SRS Simulator Lead F
8t oTPM-oo101oo
€ oTsM-TB4o114
O oTTM-sz5o114
o-' 07TM-0010204
@ o7xAz-s140200-1 07xAz-s230100
SRS Simulator Lead H
23-2
L.

Seat Belts
Front Seat Belt Replacement
SRS comDonents are located in this area. Review the
SRS component locations (see page 23-13) and the
precautions and procedures (see page 23-14) in the SRS
section before performing repairs or service,
NOTE: Check the front seat belts for damage, and
replace them if necessary. Be careful not to damage
them during removal and installation.
Front Seat Belt
Make sure you have the anti-theft code for the radio,
then write down the frequencies for the preset
buttons.
Disconnect the negative cable from the battery, and
wait at least 3 minutes before beginning work.
Slide the front seat forward fully.
Remove the lower anchor cap (A), and remove the
lower anchor bolt (B).
3.
1.
5. Remove the rear side trim panel (seepage20-51).
23-4
qt
B7/16-20 UNF32 N m (3.3 kgf.m,24lbt.ft)
7. Disconnect the seat belt tensioner connector (A).
Remove the retractor mounting self-tapping ET
screw {B), and the retractor bolt (C), then remove
the front seat belt (D) and retractor (E).
6x1.0mm3.4 N m {0.35 kgf.m,2.5 lbf.ft)
6. Remove the upper anchor cover {A), and remove
the upper anchor bolt (B).
7/16-20 UNF32 N.m (3.3 kgf m,2ir lbf.ft)
8. lf necessary, remove the
(F).
front seat belt protecto

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9. lnstallthe seat belt and buckles in the reverse order
of removal, and note these items:
. Check that the retractor locking mechanism
functions (see step 1 on page 23-10).. Assemble the washers on the center anchor bolt
as shown (except center shoulder belt).. Apply liquid thread lock to the anchor bolts
before reinstallation.. Before installing the center anchor bolt, make
sure there are no twlsts or kinks in the center belt,
Canler anchor bolt construction:
WASHER
Inspec'tion
For front seat belt retractors with seat belt tensioners.
reviewthe SRS component locations (see page 23-13)
and the precautions and procedures (see psge 23-14) in
the SRS section before performing repairs or service.
Retractor, Front and Rear
1. Before installing the retractor, check that the seat
belt can be pulled out freely.
2. l\4ake sure that the seat belt does not lock when the
retractor (A) is leaned slowly up to 15'from the
mounted position. The seat belt should lock when
the retractor is leaned over 40'. Do not attemDt to
disassemble the retractor.
Front:
Rear:
Forward
Forward
lnside
Inside
Replace the seat belt with a new assembly if there
is any abnormality. Do not disassemble any pan of
the seat belt for any reason,
(cont'd)
23-9

sRs
Component Location Index
LEFT FRONT IMPACT SENSOB
RIGHT FRONT IMPACT SENSOR
CABLE REELBeplacement,page 23-119
SIDE AIRBAG CUTOFF INDICATOR
DRIVER'S AIRBAGReplacement, page 23-1 13Disposal, page 23 1'16
SRS INOICATORTroubleshooting, page 23-105
FRONT PASSENGER'S AIRBAGReplacement, page 23-1 14Disposal, page 23'116
SENSOR/SEAT BACKReplacement,page 20-75
FRONT PASSENGER'SSIDE AIRBAGReplacement,page 23'1'15Disposal,page 23'116
FRONT PASSENGER'SSEAT BELTTENSIONERBeplacement,page 23-4Disposal,page 23-'116
MEMORY ERASESIGNAL (MES}CONNECTOR I2PI
DATA LINKCONNECTOR(DLCI 16P
OPDS UNITInitialization, page 23-27Replacement, page 23-124
PASSENGER'S SIOEIMPACT SENSORReplacement,page 23-123
FRONT PASSENGER'S SEATBELT BUCKLE TENSIONER
DRIVER'S SEAT BELT TENSIONERReplacement, page 23 4Disposal, page 23-116
23-13

sRs
Precautions and Procedures
General Precautions
Please read the following precautions carefully beforeperforming airbag system service. Observe theinstructions described in this manual. or the airbags
could accidentally deploy and cause damage or injuries.
. Except when performing electrical inspections.
always turn the ignition switch OFF, disconnect the
negative cable from the battery, and wait at least 3minutes before beginning work.
NOTE: The memory is not erased even if the ignition
switch is turned OFF or the battery cables are
disconnected from the battery.. Use replacement pans which are manufactured to the
same standards and quality as the original parts. Do
not install used SRS parts from another vehicle. Useonly new pans when making SRS repairs.. Carefully inspect any SRS part before you install it.
Do not install any part that shows signs of being
dropped or improperly handled, such as dents, cracks,
or deformation.
. Before removing any SRS parts (including the
disconnection of connectors), always disconnect the
SRS connector.. Use only a digital multimeter to check the system. lf itis not a Honda multimeter, make sure its outout is 10mA (0.01A) or less when switched to the lowest value
in the ohmmeter range. A tester with a higher output
could cause accidental deployment and possible
injury.. Do not put objects on the front passenger's airbag.. The original radio has a coded theft protection circuit.
Be sure to get the customer's radio code and write
down the frequencies for the radio's preset stations
before disconnecting the battery cable.. Before returning the vehicle to the customer, enter
the radio code. then enter the customer's radio
station presets, and set the clock. Do the engine
control module (ECM) idle learn procedure (see page
11-139).
23-14
c
Steering-related Plecautions
Cable Reel Alignment
. Misalignment of the cable reel could cause an open in
the wiring, making the SRS system and the horns
inoperative. Center the cable reel whenever the
following is performed (see step 6 on page 23-121).
- Installation of the steering wheel- Installation of the cable reel- Installation ofthe steering column- Other steering-related adjustment or installation
. Do not disassemble the cable reel.
. Do not apply grease to the cable reel.
. lf the cable reel shows any signs of damage or
contamination. replace it with a new one. For
example, it does not rotate smoothly.

sRs
Precautions and Procedures {cont'dl
SRS Unit, Front lmpact Sensors, and Side
lmpact Sensors
. Be careful not to bump or impact the SRS unit, front
impact sensors, or side impact sensors whenever the
ignition switch is ON (ll), or for at least 3 minules after
the ignition switch is turned OFF.
. During installation orreplacement, be careful notto
bump (by impact wrench, hammer, etc.) the area
around the SRS unit, front impact sensors, and sjde
impact sensor. The airbags could accidentally deploy
and cause damage or injury.
After a collision in which any airbags or seat belt
tensioners were deployed. replace the SRS unit, front
impact sensors, and other related components (see
page 23-112). After a collision in which a side airbag
was deployed. replace the side impact sensor on the
deployed side and the SRS unit. After a collision in
which the airbags or the side airbags did not deploy,
inspect for any damage or any deformation on the
SRS unit, front impact sensors, and the side impact
sensors. lf there is any damage, replace the SRS unit
and/or the sensors.
23-16
.j
. Do not disassemble the SRS unit, front impact sensors,
or side impact sensors.
. Turn the ignition switch OFF, disconnect the battery
negative cable, and wait at least 3 minules before
beginning installation or replacement of the SBS unit,
or disconnecting the connectors from the SRS unit.
. Be sure the SRS unit, front impact sensors, and side
impact sensors are installed securely. with the
mounting bolts torqued to 9.8 N.m (1.0 kgf.m,7.2 lbf.ft)
. Do not spill wateroroil on the SRS unit, front impact
sensors, or the side impact sensors, and keep them
away from dust.
. Store the SRS unit, front imDact sensors and side
impact sensors in a cool (less than 104"F/40'C) and
dry (less than 80 % relative humidity, no moisture)
area.
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