service HONDA INTEGRA 1998 4.G Workshop Manual

SwitchTest
SRS comDonents are located in this area. Review the
SRS component locations, precautions, and procedures
in the SRS section (23) before performing repairs or ser-
vtce.
NOTE: The original radio has a coded thett protection cir-
cuit. Be sure to get the customer's code number beJore- disconnecting the battery.- removing the No. 47 (7.5 A) fuse from the under-hood
fuse/relay box.- removing the radio.
After service, reconnect Dower to the radio and turn it on.
When the word "CODE" is displayed, enter the customer's
5-digit code to restore radio operation
Disconnect the battery negative cable, then discon-
nect the positive cable, and wait at least three min-
uIes.
Disconnect each airbag connector.
Driver's Side:
a Remove the access panel from the steering wheel,
then disconnect the 2P connector between the
driver's airbag and cable reel.
Front Passenger's Side:
. Remove the glove box,
a Disconnect the 2P connector between the front
passenger's airbag and SRS main harness.
1.
Remove the dashboard lower cover and knee bolster(see page 23-71).
Disconnect the cable reel 3P conneclor from the main
wtre narness.
CABLE REEL SUB.HARNESS3P CONNECTOR
Check for continuitv between the No. 2 terminal of the
cable reel sub-harness and body ground with the
horn switch Dressed.
terminalside
a
It there is continuity, the horn switch is OK.
lf there is no continuity, go to step 6. (cont,d)
r-P r11 2 3l-t-
I
I\-J
)
I
23-209

Set/Resume Switch Test/Replacement
SRS comDonents are located in this area. Review the
SRS component locations, precautions, and procedures
in the SRS section (23) before performing repairs or ser-
vice.
NOTE: The original radio has a coded theft protection cir-
cuit, Be sure to get the customer's code number before- disconnecting the battery.- removing the No. 47 {7.5 A} fuse from the under-hood
fuse/relav box.- removing the radio.
Atter service, reconnect Dower to the radio and turn it on.
When the word "CODE" is displayed, enter the customer's
s-digit code to restore radio operatior..
1. Disconnect the battery negative cable, then discon-
nect the oositive cable, and wait at least three min-
utes,
2. Disconnect each airbag connector.
Drivor's Side:
a Remove the access panel from the steering wheel,
then disconnect the 2P connector between the
driver's airbag and cable reel,
Front Passenge;'s Side:
a Remove the glove box.
. Disconnect the 2P connector between the front
passenger's airbag and SRS main harness.
)
Remove the dashboard lower cover and knee bolster(see page 23-71).
Disconnect the cable reel 3P connector trom the main
wire harness.
CABLE REEL SU&HARNESS3P CONNECTOR
Check for continuiw between the terminals of the
cable reel sub-harness 3P connector in each switch
position according to the table.
CAALE REEL SUB.HARNESS3P CONNECTOR
terminalside
lf there is continuity, and it matches the table,
the switch is OK.
lf there is no continuity in one or both positions,
go to step 6.(cont'd)
Terminal
t"*-
---\23
SET {ON)oC
RESUME (ON}o
23-259

!
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
I
J)
)
'\' '\, ili \.-.-1 i^\\,,; i \
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
J

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
\'

)
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.
)

)
Troubleshooting
Self-diagnostic Procedures
The self-diagnostic function of the SRS system allows it to locate the causes of system problems and to store this informa-
tion in memorv. For easier troubleshooting, this data can be retrieved via 8 dats link circuit.
o When you turn the ignition switch ON (ll), the SRS indicator will come on. lf it goes off after six seconds, the system is
normat.
. lf there is 8n abnormality, the system locstes and defines the problem, stores this information in memory, and turns
th€ SRS indicator light on. The data will remain In the memory even when the ignition switch is turned off or if the bat-
terv is disconnected.
. When you connect the SCS service connector to the service check connector (2P), and turn the ignition switch ON {ll),
the sRs indicator light will indicate the diagnostic trouble code (DTCI by th€ number of blinks.
. After reading and recording the DTC, proceed with the troubleshooting for this code
Pr6crution!
. 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 damsge the
airbag circuit or cause sccidental airbag deployment and possible injury.
. Whenever the ignition switch is ON (ll), or has been turned OFF for less than three
SRS unit; the airbags could accidentally deploy and cause damage or injuries'
. Before you remove the SRS main harness, disconnect the driver's airbag connector
conneclor.
and the front passenger's airbag
. Make sure the battery is sufficiently charged (s6e psge 23-67). lf the battsry is dead or low, msasuring values won't be
correct,
a Do not touch a tester probe to the terminals in the SRS unit or harness connectors, and do not connect the terminals
with a jumper wire. Use only the backprobe set and the SCS service connector.
For backprobing spring-loaded lock type connectors, refer to psge 23-283.
Reading the DTC
When the SRS indicator light is on, read the DTC using one ot th"sc rn"ihod<
A. Connect the Honda PGM Toster io the 16P D![! Linl Con.lac{or {DLC), tnd toalor nl -r t!'iF t tr -
indicat$ no DTC, or it indicates DTC $1 or DTC $2. doublechcd( b'Y iumdng $. !..vic. chd cdrE r€ --t
ing the SRS indicator light (see next p89€).
{cont'd)
minutes, be careful not to bump the
DATA LINK CONNECTOR (16P}
23-247
HONDA PGM TESTER

v
-t f--.l r --1 f-M.in cod. {11 S!b{od. (2}
oTcr2
-l F --{ FMain cod. (l) Sub-cod.11).--.Y-oTc r-rThnd'm6r.@6m
2
ON
light sl.ys on h ct36 or
Troubleshooting
Reading the DTC (cont'd)
B. The SRS indicator light can also indicate the OTC by the number of blinks when the SCS service connector ts connect-ed to the service check connector (2P).
1. Turn the ignition switch OFF, and wait for ten seconds. Then connect the SCS service connector to the service checkconnector (2P). lf you do not wait ten seconds, the SRS unit will not be completelv reset and will not outout DTCS.SRS INDICATOR LIGHT
scs SERV|CECONI{ECTOR- (x)l01(x)
SERVICE CHECKCONNECTOR (2PI
2. Turn the ignition swilch ON (ll). The SRS indicator light comes on for about six seconds and then goes off. Then it will
indicate the DTC:- The DTC consists of a main code and a sub-code.- Including the most recent problem, up to three different malfunctions can be indicated.- ln case of a continuous failure, the DTC will be indicated repeatedly (see example 1 below).- In case of an intermiftent failure, the SRS indicator light will indicate the DTC one time. then it will stay on (see exarn-ple 2 beiow).- lf both a continuous and an intermittent failure occur, both DTCS will be indicated as continuous failures.- In case the system is normal (no DTC), the SRS indicator light will stay on {see example 3).
3. Read the DTC.
4. Turn the ignition switch OFF, and wait for ten seconds. Then disconnect the SCS service connector from the servicecheck connector (2P),
Examples ol DTC Indications:
L Continuous failure, SRS Indicator Light is:0.3 s 0.3s 0.3 s-]-]-l-t-
07?M
(S./'
\
-l Mlin cod. r
orc 2-1Mo3t r.cant probt.m
Intermittent failure, SRS Indicator Light is:
Normsl (no failure), SRS Indicator Light is:
oTc 5,r

)
Erasing the DTC Memory
To erase the DTC(S) from the SRS unit, use a Honda
PGM tester (see the Honda PGM Tester SRS vehicle
System Supplement) or the following procedure.
1. Make sure the ignition switch is OFF.
2. Connect the SCS service connector to the MES con-
nector (2P). Do not use a jumper wlre.
MEMORY EMSESIGNAL {MESI CONNESTOR I2P)
[GRN, GBNI or IWHT, BLKI
Turn the ignition switch ON (ll).
The SBS indicator light comes on for about six sec-
onds and goes off. Remove the SCS service connec-
tor from the MES connector (2P) within four seconds
after the SRS indicator light went off.
The SRS indicator light comes on again. Reconnect
the scs service connector to the MES connector
(2P) within the four seconds after the SRS indicator
light comes on.
The SRS indicator light goes off. Remove the SCS
service connector from the MES connector (2P)
within four seconds.
The SRS indicator light indicates that the memory is
erased by blinking two times.
Turn the ignition switch OFF. and wait for ten sec-
onos.
Troubleshootin g Intermittent
Failures
lf the.e was a malfunction, but it doesn't recur, it will be
stored in the memory as an intermittent failure, and the
SRS indicator light comes on,
Atter chocking ths DTC, troubleshoot as follows:
1. Read the DTC (see "Reading the DTC").
2. Erase the DTC memory (see "Erasing the DTC
Memory").
3. With the shift l€ver in neutral, turn the ignition switch
ON (ll), and let the engine idle.
4. The SRS indicator light comes on for about six sec-
onds and then goes off.
I o"* 1--
ONllI
Shake the wire harness and the connector, take a test
drive (quick acceleration, quick braking, cornering),
and turn the steering wheel fully left and righi, and
hold I there for fve to ten s€conds lo 6nd tt|e caus€
of the intermnem farlure
It lhe problem .!curs, lha SRS nd'calor r'ghl will
$aY on.
,l soc or less
Problem recurs, Iight stays on
lf vou can't duplicate the intermittent failure, the sys-
tem is OK at this time.SRS indic.lollight
MESconnaclottarrninlll
CONNECTED
DISCONNECTED
23-289

sRs indicaror light I DTcPossible causeCorrective actionSee page
comes on
5,1
5-2
lnternal failure of the SRS unitSRS unit replace-
ment23-326
5-4
6-1
lnternal failure of the SRS 0nitSRS unit replace-
ment23-326
6-2
6-4
lnternal Iailure of the SRS unitSRS unir replac€-
menlll Jzo't -2
7-3
23326
8-l
lnternal failure of the SRS unitSRS unit replace-
menra-2
lnternal failure ot the SRS unitSRS unit replace-
ment23-326
9-2*2*x
10-1
lnternal failure of the SRS unitSRS unit replace-
ment23-326
SRS airbags deployed (SRS unit must be
replaced)
SRS unit replace-
menl
*1: ln case of an intermittent failure DTC 9-1. it means there was an internal failure of the SRS unit or a faulty SRS indica-
)
tor light circuit. Do the troubleshooting for intermittent failures (see page 23-289)
*2: ln case of an intermittent failure DTC 9-2, it means there was an internal failure ot the power supply (VB line). Do the
troubleshooting for intermittent failures (see page 23-289).*3: DTC cannot be read with a Honda PGM Tester; check by iumping the SCS service connector'
23-291