Srs troubleshooting HONDA CR-V 1997 RD1-RD3 / 1.G User Guide
[x] Cancel search | Manufacturer: HONDA, Model Year: 1997, Model line: CR-V, Model: HONDA CR-V 1997 RD1-RD3 / 1.GPages: 1395, PDF Size: 35.62 MB
Page 1323 of 1395
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 memory, For easier troubleshooting, this data can be retrieved via a data link circuit.
. When you turn the ignition switch ON (ll). the SRS indicator will come on. lf it goes off after six seconds, the system is
normal.
. lf there is 8n abnormality, the system locates and defines the problem. stores this information in memory, and turns
the 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 (DTC) by the number of blinks.
. After reading and recording the DTC, proceed with the troubleshooting forthis code.
Precsutions
. 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 accidental airbag deployment and possible injury.
. Whenever the ignition switch isON (ll). or has been turned OFF for less than three minutes, be careful nottobumpthe
SRS unit; the airbags could accidentally deploy and cause damage or injuries.
. Before you remove the SRS main harness, disconnect the airbag and tensioner connectors (see page 24-23).
. Make sure the battery is sufficiently charged (see section 23). lf the battery is dead or low, measuring values won't be
correct.
. 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 con nectors, .efet to page 24-22.
Reading the DTC
When the SRS indicator light is on, read the DTC using one of these methods;
A. Connect the Honda PGM Tester to the 16P Data Link Connector {DLC), and follow the tester's prompts. lf the tester
indicates no DTC, DTC 9-1 and DTC 9-2, double-check by jumping the service check connector (2P) and watching the
SRS indicator light (see next page).
HONDA PGM TESTER
DATA LINK CONNECIOR {DLCI {16P)
24-26
,1
www.emanualpro.com
Page 1325 of 1395
Troubleshooting
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 wire.
MEMORY ERASESIGNAL (MES} CONNECTOR I2PIIGRY, GRYI or IGRN, GRNI
SCS SERVICE CONNECTOR07PAZ - 0010100
3. Turn the ignition switch ON (ll),
4. The SRS indicator light comes on for about six sec-
onds and then goes off. Remove the SCS servjce con
nector from the MES connector {2P) within four sec-
onds after the SRS indicator light went otf.
5. The SRS indicator light comes on again. Reconnect
the SCS service connector to the MES connector(2P) within four seconds after the SRS indicator lioht
comes on,
6. The SRS indicator light goes otf. Remove the SCS
service connector from the MES connector (2P)
within four seconds.
7. The SRS indicator light indicates that the memory is
erased by blinking two times.
L Turn the ignition switch OFF, and wait for ten sec
onos.
SRS indicatorliqtfi
MESconnac'lolterminals
OFF
CONNECTED
OISCONNECTEO
24-28
,l sec or less
3.
Troubleshooting Intermittent
Failures
lf there 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.
After checking the DTC, troubleshoot as follows:
1. Read the DTC (see "Reading the DTC").
4.
Erase the DTC memory (see "Erasing the DTC
Memory").
With the shift lever in neutral, turn the ignition switch
ON (ll), and let the engine idle.
The SRS indicator ljght comes on for about six sec-
onds and then goes off.
t*F
ON
lt--- _l
Shake the wire harness and the connector, take a test
drive (quick acceleration, quick braking, cornering),
and turn the steering wheel fully left and right, and
hold it there for five to ten seconds to find the cause
of the intermittent failure.
lf the problem recurs, the SRS indicator light will
stay on.
-+t 6!.c l.-
Problem recurs, light stays on.
6. lf you can't duplicate the intermiftent tailure, the sys-
tem is OK at this time.
:-
-4
www.emanualpro.com
Page 1326 of 1395
jIDiagnostic Trouble Code (DTG) Ghart -'97 model
SRS indicator lightDTCPos3ibls causeCorroctive actionSlc pago
doesn't come onnone(doesn't
come on)
Faulty SRS indicator light circuitTroubleshooting24-34
doesn't go off
none*' (doesn't
go off)
Faulty SRS indicator light circuit, internal
tailure of SRS unit, faulty SBS power supplyTroubleshooting24-37
Open in the driver's airbag inflator
Troubleshooting
24-50
Increased resistance in the driver's airbag
inflator24-50
Short to another wire in the driver's airbag
inflator or decreased resistance24-52
Short to power in the driver's airbag inflator24-54
Short to ground in the driver's airbag inflator24-56
Open in the passenger's airbag inflator
Troubleshooting
24-58
Increased resistance in the passenger's airbag
inflator24-54
Shon to another wire in the passenger's
airbag inflator or decreased resistance24-60
2-4Short to power in the passenger's airbag
inflator24-62
2-5Shon to ground in the passengar's airbag
inflator24-64
)r,(cont'd)
24-29
www.emanualpro.com
Page 1327 of 1395
Troubleshooting
Diagnostic Trouble Code (DTC) Chart -'97 model (cont'dl
*1: In case of an intermittent failure DTC 9-1, it means there was an internal failure of the SRS unit or a faultv SRS indica-tor light circuit. Do the troubleshooting for intermittent failures {see page 24-28),*2: DTC cannot be read with a Honda PGM Tester; check by jumping the SCS service connector.
NOTE: Before troubleshooting DTCS 5-1 through 8-5, check battery/system voltage. lf voltage is low. repair the chargingsystem before troubleshooting the SRS system.
l*
SRS indicator lightDTCPossible causeCorrestive actionSee page
doesn't go off
Internal failure of the SRS unitSRS unit replace-
ment24-965-3
5-4
5-5
o-l
Internal failure of the SRS unitSRS unit replace-
ment24-966-2
6-4
lnternal failure of the SRS unitSRS unit replace-
ment24-967-2
7-3
8-1
Internal failure of the SBS unitSRS unit replace-
menr24-96a-2
8-5
8-6Internal failure of the SRS unit or two failures
at a timeTroubleshooting24-82
Internal failure of the SRS unitSRS unit replace-
menr24-96
9-2Faulty SRS power supply (VB line)Troubleshooting24-84
'10- 1SRS airbags deployed (SRS unit must be
replaced)
SRS unit replace-
ment24-96
24-30
--
www.emanualpro.com
Page 1328 of 1395
);Diagnostic Trouble Code (DTCI Chart -'98 - 00 models
SRS indicator lightDTCPossibls causeCorrectiva agtionSee page
doesn t come onnone
(doesn't
come on)
Faulty SRS indicator light circuitTroubleshooting24-34
doesn't go off
none*3
{doesn'tgo off)
No DTC
(light comes
on after self-
diagnosis)
Faulty SRS indicator light circuit. internal
failure of SRS unit, faulty SRS power supply
(VB line)
Troubleshooting24-42
Faulty SRS power supply (VA line)Troubleshooting24-47
1-1Open in the driver's airbag inflator
Troubleshooting
24-50
lncreased resistance in the driver's airbag
inflator24-50
1-3Short to another wire in the driver's airbag
inflator or decreased reslstance24-52
1-4Short to power in the driver's airbag inflator24-54
1-5Short to ground in the driver's airbag inflator24-56
2-1Open in the passenger's airbag inflator
Troubleshooting
24-54
Increased resistance in the passenger's airbag
inflator24-58
Shon to another wire in the passenger's
airbag inflator or decreased resistance24-60
2,4Short to power in the passenger's airbag
inflator24-62
Short to ground in the passenger's arrbag
inflator24-64
3-1Open in the driver's seat belt tensioner
Troubleshooting
24-66
3-2lncreased resistance in the driver's seat belt
tensroner24-66
Shon to another wire in the driver's seat belt
tensroner24-64
3-4Short to power in the driver's seat belt tensioner24-10
Short to ground in the driver's seat belt tensloner24-7 2
4-1Open in the passenger's seat belt tensioner
Troubleshooting
24-14
Increased resistance in the passenger's seat
belt tensioner24-7 4
4-3Short to another wire in the passenger's seat
belt tensioner24-7 6
4-4
4-5
Short to power in the passenger's seat belt ten-
sroner24-74
Shon to ground in the passenger's seat belt
tensroner24-AO
)-(cont'd)
24-31
www.emanualpro.com
Page 1329 of 1395
Troubleshooting
SRS indicator lightDTCPo$ibla causeCorroctive lctionSec pag€
doesn't go off
5-l
Internal failure of the SRS unitSRS unit replace-
ment24-96
5-4
6-1
lnternal failure of the SRS unitSRS unit replace-
ment24-966-3
6-4
Internal failure of the SRS unitSRS unit replace-
ment24-96
8-1
Internal failure of the SRS unitSRS unit replace-
ment24-96
8-2
8-3
8-4
8-6
Internal failure of the SRS unitSRS unit.eplace-
ment24-969_2*2*3
10- 1SRS unit replacement code (SRS unit must notbe used any longer)SRS unit replace-
ment24-96
Diagnostic Trouble Code (DTC) Chart -'98 - 00 modets (cont,dl
NOTE:*1: In case of an intermittent failure DTC g-1, it means there was an internal failure of the SRS unit or a faulw SRS indica-tor light circuit. Do the troubleshooting for intermittent failures (see page 2,+_2g),*2: In case of an intermiuent fairure DTc 9-2, it means there was an internar fairure of the power suppry (vB rine). Do thetroubleshooting for intermittent failures (see page 24-29).*3: DTC cannot be read with a Honda PGM Tester; check by jumping the SCS servic€ connector.
NOTE: Before troubleshooting DTCS 5-1 through g-6. check battery/system voltage. lf voltage is low, repair the charg_ing system before troubleshooting the SRS system.
l*-
1,.-
\f ..
24-32
--
www.emanualpro.com
Page 1331 of 1395
Troubleshooting
The SRS Indicator Light Doesn't Come On
CAUTION: Whenever the ignition switch is ON D, orhas been turned OFF for less than three minutes, becareful not to bump the SRS unit; the airbags couldaccidentally deploy and cause damage or iniuries.
Ch6ck the power supply (fuse):Turn the ignition switch ON {ll), and check whether the otherindicator lights come on (brake system, e(c.r.
Do the other indicator liglrts com6 on?
Check the No. 25 (7.5 A) fuse in the under-dash tuse/relayDOX.
ls the tus€ oK?
NO
Check the bulb:Replace the No.25 (7.5 A) fuse, and check that theSRS indicator light comes on.
Does the SRS indicator liqht come on?
YESNO
END
YES
Check the wire h.rnesi kwe€n fus€.nd gauge .3sembly:Check for an open in the wire harness between fuseNo. 25 (7.5 Al and the gauge assembly, and repair. Checkthat lhe SRS indicato.lighi
Does the SRS indic.tor liqht com6 on?
END
YESNO
Check the SRS indicator light bulb:1. Turn the ignition switch OFF.2. Remove the gauge assembly.3. Check lor blown SRS indicator tight bulb.
ls the SRS indicator tight bulb OK?
YESNO
Check the SRS indicator light circuit:Replace the bulb, and reconnect the gauge assemblyconneclors. Then turn the ignition switch ON {ll).
Does the SRS indicator light come on?
I YEs No
:ND
(A) To page 24-35(B) To page 24 35
24-34
lr-
lu
-J
www.emanualpro.com
Page 1333 of 1395
Troubleshooting
From page 24-35
Check lhe wire harness otthe SRS indicator light circuit l2l:L Turn the ignitjon switch OFF.2. Disconnect the SRS main harness 3p connector from themain wire harness.3. Connect a voltmeter between the No. I terminal (+) ofthe SRS main harness 3P connector and qround.4. Turn the ignition switch ON (ll), and measure voltaqe.
ls there 8.5 V o. less tor six seconds atter the ignitionswitch has been turned ON
Short to power in th€ BLU wire of the main wiro halno3s;
Check th€ wire hahess of th6 SRS indicator ci.cuit {31:1. Turn the ignition switch OFF.2. Disconnect the battery negative cable, then the positivecable, and wait three minutes.3. Disconnect the driver's and front passenger,s airbag con-nectors {and disconnect the seat belt tensioner connectors}(see page 24-23).4. Disconnect the SRS main harness 18p connector from
5. Reconnect the battery positive cable, then reconnect thenegative cable.6. Connect a voltmeter between the No. 6 terminal (+) ofthe SRS main harness 'l8P connector and ground.7. Turn the ignition switch ON (ll), and measure voltage. Thereshould be 0.5 V or less.
Short to power in the BLU wire oI the SRS main harngas;
The SRS Indicator Light Doesn't Come On (cont,dl
'97 modol:
J
MAIN WIRE HARNESS3P CONNECTOR
UNDER.DASHFUSE/RELAY BOX
'98 - 00 models:
SRS MAIN HARN€SS3P CONNECTOR
MAIN WIRE HARNESS3P CONNECTOR
SRS MAIN HARNESS3P CONNECTOR
SRS MAIN HARNESS3P COI{NECTOB
FUSE/RELAY BOX
c803
SRS MAIN HARNESS18P CONNECTOR
24-36
www.emanualpro.com
Page 1335 of 1395
Troubleshooting
The SRS Indicator Light Doesn't Go Off - '97 model (cont,d)
From page 24 37(A)
SRS MAIN HARNESS 18P CONNECTOR
(B)To page 24'39
DASHBOARD WIRE HARNESS5P CONNECTOR
(c)To page 24-40
DASHBOAND WIRE HARI{ESS5P CONNECTOR
)
J
c509
Wire side ol femaleterminals
T
Check the SRS unit:Connect the SRS main harness 18P connector terminals No.6 and No.7 with a jumper wire and backprobe
Faulty SRS unit or poo. contact at the SRS main ha.ness18P connectoi; check the connector.lfthe conneqtor is OK, replace the SRS unit.
Oid tuse No. 13 (15 Al blow?
Check for a short to ground in the SRS indicator tight cir-cutl:1. Turn the ignitlon switch oFF.2, Disconnect the dashboard wire harness 5p connectorfrom the gauge assembly.3. Check resistance between the No. 1 terminal ofthe dashboard wire harness 5P connector and ground. Thereshould be 1 MO or more.
Shon to ground in th6 gaugo assembly; replaco the gau96
JUMPER WIRE
Wlre sido ot tomale terminsls
243a
--
www.emanualpro.com
Page 1337 of 1395
Troubleshooting
The SRS Indicator Light Doesnt Go Off -'97 model {cont'dl
From page 24-38
1C)
Check for a short to ground in tho main wire ha.n.3s:1. Disconnect the dashboard wire harngss 24p connectorfrom the main wire harness,2. Check resistance between the No. 5 terminal of the dash_board wire harness 24P connector and ground. Thereshould be 1 M0 or more.
Short to ground in tho deshbosrd wire harne.r; raD.irthe dashboard wiro harness.
Check tor a short to ground in tho SRS main hfina3!:1. Disconnect the SBS main harness 3p connector from themaan wire harness.2. Check resistance between the No. 1 terminal of the SRSmain harness 3P connector and ground. There should be1 MO or more.
Short to ground in tho main wire harnesr; ,opair th6main wire hamoss.
Short to ground in the SRS main hsrn6sa;.oplac. thc SRSmain harn6ss.
i,
MAIN WIREHARNESS 24P CONNECTOR
DASHBOARD WIRE HAff{ESS24P COi{NECTOR
OASHBOARD WIREHARNESS24P CONNECTOR
BLU
)
MAIN wlRE HARNESS3P CONNECTOB
SRS MAIN HARNESS3P CONNECTOR
UNDER.OASHFUSE/RELAY BOX
SRS MAII{ HARI{ESS3P CONNECTOR
cao3
)r
24-40
Wire side of femalet6rminals
-1
www.emanualpro.com