HONDA INTEGRA 1998 4.G Workshop Manual

Supplemental Restraint System (SRSI
Component/Wiring Locations
fndex ................ ......23-218
Description ................23-279
Circuit Diagram .........23-280
Precautions/Procedures
General Precautions ........................ 23-281
Airbag Handling and Storage .........23-281
SRS Unit Precautions ...................... 23-28P
f nspection After Deployment ......... 23-282
Wiring Precautions .......................... 23-283
Backprobing Spring-loaded Lock
Troubleshooting
Seff-diagnostic Procedures ............. 23-287
Reading the DTC .................. ...........- 23-287
Erasing the DTC Memory ................ 23-289
Troubleshooting Intermittent
Failures .............. 23-289
Diagnostic Trouble Code (DTC)
Chart ................ ..23-290
SRS Indicator Light Wire
Connestions ...... 23-252
Ff owcharts .............23-293
Ailbag
Repf acement ......... 23-317
Disposaf .................23-320
Cable Reel
Replacement .........23-322
SRS Unit
Replacement .........23-326
1 Connectors ........23-28:t
.r/ Spring-foaded Lock Connector ....... 23-284
Spring-loaded Lock Connestor with
Buift-in Short Contact .............. ... 23-281
Disconnecting the Airbag
Connector(sl ......23-285
Steering-related Precautions .......... 23-286
)f-'Tl

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Gomponent/Wiring Locations Index
SRS INDICATOR LIGHT(ln the gauge assembly)Troubleshooting, page 23-287Gauge assembly, page 23-126
To HORN SWITCH
CABLE REELReplacement,page 23-322
DRIVER'S AIRBAGReplacement. page 23-317Disposal, page 23-320To DRIVER'S AIRBAG
DASHBOARD WIRE HARNESSFRONT PASSENGER'SAIRBAGBeplacement, page 23-317Disposal, page 23-320
to SRS INDICATOR LIGHT in GAUGE ASSEMBLY5P CONNECTOR
SRS MAIN HARNESSTo MAINWIRE HARNESS3P CONNECTOR
SRS MAINHARNESSto UNDER-DASHFUSE/RELAYBOX2P CONNECTOR
HARNESSto FRONT PASSENGERS AIRBAG2P CONNECTOR
SRS MAIN
SERVICE CHECXCONNECTOR {2PIIBRNAAIHT, BLK]to CABLE REEL2P CONNECTOR
MAIN WIRE HARNESSto DASHBOARD WIREHARNESS16P CONNECTOR
ERASE SIGNAL (MES}SRS UNITGBOUNOSRS MAIN HARNESSSRS UNIT(lncluding safing sensorano rmpact sensor)R6placement, page 23-326
2P CONNECTORSRS MAIN HARNESSto SRS UNIT18P CONNECTOR
S\--0
[GRN, GRNI or IWHT, BLKI
23-27A

Description
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The SRS is a safetv device which, when used in coniunction with the seat belt, is designed to help protect the driver and
front passenger in a frontal impact exceeding a cenain set limit. The system consists ot the SRS unit (including safing sen-
sor and imDact sensor), the cable reel, the driver's airbag, and front passenger's airbag
Operation t'Its
The main circuit in the SRS unit senses and judges the force ot impact and, il necessary, ignites the inflator charges. If bat-
tery voltage is too low or power is disconnected due to the impact, the back-up power circuii will keep voltage at a con-
stant level.
For the SRS to operate:
(1) The impact sensor and safing sensor must activate and send electric signals to lhe mictop.Goi
{2) The microprocessor must compute the signals and send signals to the airbag inflators'
(3) The inflators must ignite and deploy the airbags sE Lr.r
UNDER DASHFUSE/RELAYBOX
Dnftr sAtacranroq
IIMPACT I ] )
F80t{TPASSEI{GEffSAIRSAGINFLAIOR
Drc MES SCS rDC
Self-diagnosis System
A self-diagnosis circuit is built into the sRs unit; when the ignition switch is turned oN (ll), the sRS indicator light comes
on and goes off after about six seconds if the system is operating normally'
lf the light does not come on, or does not go off after six seconds, or if it comes on while driving. it indicates an abnormal-
ity in the system. The system must be inspected and repaired as soon as possible'
For better servicesbility. the memory will store the cause of the malfunction, and the data link circuit passes on the infor-
mation from the memory to the data link connector (DLC). This information can be read with the Honda PGM Tester con-
nected to the DLc (16P).
23-279
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Circuit Diagram
FRONTPASSENGEF'SAJRBAGINFLATOR
f\4r
tlGRN GRN(YEL) (BLi.,'YEL)
I
G701
IGNITIONswtTcH
SRS INOICATOF CIBCUIT(ln the gauge assembly)
8LU
I
I
siEi'
IGRN
GRN(8RN)
I?
RNAVHT BRII/WHTlltl\---7 \*7
ECM SERVICECHECKcoirNEcTon
WHT/BLK +WHT
t"'
DATA LINKCONNECTOF(DLC)(r6P)
UNDEF-DASHFUSURELAY80x
ELKRED
J
PGM-FImain r€lay
MEIiIORY ERASEr2pt SIGNAL (MESIcoNNECToR (2P)
SRS UNIT TERMJNALS
BLX
G201G401
-NOER.NOOD FUSE/RELAY BOX
SRS INDICATORLIGHT 0.4W)
10 14 1 13 6 7(VA) 3(VB)SRS UNIT16 17 15 9188
DRIVER'SAJFBAGINFLATOR
1367I
10,/1,/1314151718
lerminal sde o{ male tefinnals
23-280
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Precautions/Procedures
General Precautions
Carefully inspect any SRS part before you install it,
Do not install any part that shows signs of being drop-
ped or improperly handled. such as dents, cracks or
deformstion:
- Airbags- Cable reel- SRS unit
' Use only a digital multimeter to check the system lf
it's not a Honda multimeter. make sure its output is
10 mA (0.01 A) or less when switched to the smallest
value in the ohmmeter range. A tester with a higher
output could damage the airbag circuit or cause acci-
dental deployment and possible injury.
r Do not install used SRS parts from anothercar.When
making SRS repairs, use only new parts.
r Except when performing electrical inspections,
always disconnect both the negative cable and posl-
tive cable from the batterY, and wait at least three
minutes before beginning work.
r Replacement of the combination light and wiper/
washer switches and cruise control switch can be
done without removing the steering wheel:
- Combination light and wiperlwasher switch replace-
ment (see page 23-268).- Cruise controi sevresume switch replacement (see
page 23-259t.
. Whenever the ignition switch is ON (ll), or has been
turned OFF for less than three minutes, be caretul not
to bump the SRS unit; the airbags could accidentally
deploy and cause damage or iniuries.
. Whenever the airbag has been activated, replace the
SRS unit.
. The original radio has a coded theft protection circuit.
Be sure to get the customer's code number beJore dis-
connecting the battery cables.
23-281
Airbag Handling and Storage
Do not try to disassemble the airbag. lt has no service-
able parts. Once an airbag has been operated
(deployed), it cannot be repaired or reused.
For temporary storage of the airbag during service,
please observe the following precautions:
. Store the removed airbag with the pad surface up.
The driver's and tront passenger's airbag connectors
have 8 built-in short contact (see page 23-284).
@ r the airbag is improp€rly storcd face down,
accidental deployment could propel the unit with enough
force to caus6 serious iniury.
AIRBAG CONNECTORS(Built-in short contact)
. Store the removed airbag on a secure flat surface
away from any high heat source (exceeding
212F110O'CI and free of any oil, grease, detergent or
water.
CAUTION: lmproper handling or storage can intornally
damags the airbag, making it inoperative.
1l you su3pocl the aitbag has been damaged, install a ncw
unit and rofEr to ths Deployment/Dilpolal Procedures for
dbposing of ihe damsged ailbag.
)

Precautions/Procedu res
SRS Unit Precautions
Take extra caro when painting or doing body work in
the area below the dashboard. Avoid direct exposure
of the SRS unit or wiring to heat guns, welding, or
spraying equipment.
Disconnect the airbsg connector(s) before discon-
necting SRS harness connectors (see page 23-2851.
After any degree of frontal body damage, or after a
collision without airbag deployment, inspect the SRS
unit for physical damage. lf it is dented, cracked, or
deformed, reDlace it.
Be sure the SRS unit is installed securelv.
Do not disassemble the SRS unit.
Store the SRS unit in a cool (lass than about
104'F/40"C) and dry (less than 80% humidity, no mois-
ture) place, Do not spill water or oil on the SRS unit,
and keeD it awav trom dust.
During installation or r6placement, be careful not to
bump {impact wrench, hammer, etc.) the area around
the SRS unit. The airbags could accidentally deploy
and cause damsge or injuries,
v
Inspection After Deployment
After a collision in which the airbags w6re deployed,
replace the SRS unit, and inspect the following:
1, Inspect all the SRS wire harnesses. Replace, don't
repair, any damaged harnesses
2. Inspect the cable reel for heat damage. lf there is any
damage. replace the cable reel.
3. After the vehicle is completely repairod, turn the
ignition switch ON {ll). lf the SRS indicator light
comes on for about six seconds and then goes off,
the SRS system is OK. lf the indicator light does not
function properly. go to SRS Troubleshooting.
23-282

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Wiring Precautions
. Never attempt to modify, splice or repair SRS wiring.
NOTE: SRS wiring can be identified by special yellow
outer protective covering.
. Be sure to install ihe harness wires so that they are not
pinched or interfering with other car parts.
. Make sure all SRS ground locations are clean and
grounds are securely fastened for optimum metal-to-
metal contact. Poor grounding can cause intermittent
problems that are difficult to diagnose.
Backprobing Spring-loaded Lock
Connectors
. When checking voltage or resistance on this type of
connector the first time, it is necessary to remove the
retainer to insert tester probes from the wire side.
NOTE: lt is not necessary to reinstall the removed
retainer; the terminals will stav locked in the connec-
tor housing.
To remove the retainer, insen a flat tip scrGirdr'\/".
between connector body and retainer, and car"fully
ory out the retarner.
NOTE: Take care not to break the conn€ctor.
FLAT TIPscRElt DRrrrEh
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RETAINER
RETAINER
RETAINER
23-283

Precautions/Procedures
Spring-loaded Lock ConneetorSpring-loaded Lock Gonnector
with Built-in Short Contact
The driver's and front passenger's airbag have a spring-
loaded lock connector with a built-in short contact.
When this connector is disconnected, the power termi-
nal and the ground terminal in the airbag connector are
automatically shorted.
Connestor halves dbconnoctgd:
GROU D IERMINAL
SHONT OONTACI
CABTI REEL @I{I{ECTOF
Conncctor hrlvag connected:
Some SRS system connectors have a spring-loaded lock.
Disconn€cting
To release the lock, pull the spring-loaded sleeve toward
the stop while holding the opposite half ot the connector.
Then puilthe connector halves apart.
NOTE: Be sure to pull
connector half.
on the sleeve and not on the
SPRII{G.LOADEDsL"EEvE
Do not pullon thishalt of the connector-Conneqting
1. Hold the pawl-side connector half, and press on the
back of the sleeve-side connector half in the direction
shown. As the two connector halves are pressed
together, the sleeve is pushed back by the pawl.
NOTE: Do not touch the sleeve,
When the connector halves are completely connected,
the pawl is released, and the spring-loaded sleeve
locks the connector.SPRIM;-LOADEDSLECVE
acr
GAOUND TERi'INAL
@NTACT
CABII REELooNtrEcron
23-284
CONYACT

Disconnecting the Airbag Connector(s)
!@ To prevent accidental airbag dsploymcnt, turn ths ignition switch OFF, disconnect the negrtive battory
able, and wait three minut€s before disconnesting any SRS Glnnoqto.s.
. Before disconnecting the SRS main harness {A)from the SRS unit, disconnect both airbags (C, D).
. Before disconnecting the cable reel 2P con nector ( B). disconnect the driver's airbag 2P connector (C).
)
1. Disconnect the negative baftery cable. and wait at
least three minutes.
2. Disconnect the airbag connector(s).
Driver's Side:
. Remove the access panel from the steering wheel,
then disconnect the driver's airbag 2P connector and
cable reel 2P connector.
CABLE REEL2?CONNECTOR
Front Ps$sngar'3 Sid.:
. Remove the glove box. then disconnect the front pas-
senger's airbag 2P connector and SRS main harness
2P connector,
\,./AccEssPANEL
23-2A5

Precautions/Procedures
Steering-related Precautions
Steering Wheel and Gable Reel Alignment
NOTE: To avoid misalignment of the steering wheel or
airbag on reassembly. make sure the wheels are turned
straight ahead before removing the steering wheel.
Rotate the cable reel clockwise unit it stops.
Then rotate it counterclockwise (approximately two and a
half turns) until the arrow mark on the cable reel label
points straight up.
ARROW MARK
23-286
Steering Column Removal
CAUTION:
. Before romoving the steoring column, lirst di3con-
nect ths connector bctwoen tho csble rsal and the
SBS main harneEs.
. lf the steeting column is going to be rsmoved with-
out dismounting the steering wheel, lock the steer-
ing by iurning the ignition k6y to o'LOCK position' or
remove tho key lrom thc ignition ro that the steering
wheel will not turn.
NOTE:
When the airbag and cable reel are disconnected, and
the battery is reconnected and the ignition switch is
turned ON (ll), the SRS unit will store this as an open
in the driver's airbag inflator, and the SRS indicator
light will come on. In such a case, make sure to con-
firm the DTC, then clear the SRS unit memory.
For disconnecting the spring-loaded lock type connec-
tor, refer to page 23-284,
SRS MAIN HARNESS2P CONNECTOR
Do not replace the original steering wheel with any other
design since it will make it impossible to properly install
the airbag {only use genuine Honda replacement parts).
After reassembly. confirm that the wheels are still turned
straight ahead and that the steering wheel spoke angle is
correct, lf minor spoke angle adjustment is necessary, do
so only by adjusting the tie-rods, not by removing and
repositioning the steering wheel.
L