Scs HONDA CR-V 1998 RD1-RD3 / 1.G Repair Manual

Check fo. a short to power in thaPCOM, SCOM circuhi1. Start the engine.2. Measure the voltage betweenbody ground and ABS controlunit 26P connector terminalsNo. I and No.2 individually.
'Repair short to powor in thsFCOM circuit wiro botwoon th€ABS control unit and the under-hood ABS tuse/r.lay box.. Repeir 3hort to power in thoPCOM or SCOM circuit wirebetwegn tho ABS control uniiand ths modulator unh,. R.placo tha modulatoi unit.(Shon to power in.ido th6 unitl
ls there 8 V or more?
Tu.n tho ignhion switch OFF andconnect thc SCS 3orvice connec-tor. Then turn thc ignition switchON (lll and measure tha voltagobotween the PCOM .nd SCOMtsrminal3 and body gJound. Itther6 is 0 V, .epleco tho ABS con-trol unit.
ABS CONTROL UNIT 26P CONNECTOR
PCOM
Wire side of temale terminals
NOTE: 8 V or more indicates a short to
(GRN/WHTI SCOM
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Troubleshooting
DTC 61: lgnition Voltage
- Whh the .ngine running. theABS indicator b ON,- With the SCS servicc connaetor connoctod {sao prgo 1998},DTC 61 b indi)atod.
Problom vorification:1. Erase the DTC.2. Start the engine.
Does the ABS indicator come onand is DTC 61 indicated?Tho ryrtom i. OK rt thb timo.
Ch.ck the lG2 circuit:Measure the voltage betweon theABS control unit 26P connectorterminal No.3 and body ground.
ls there 18 V or above?
lf the volt gc b 0 V, ch6d( to. anoD€n in lhe lG2 circuh.I thole ir 12 - 17 V, subatilui. !known-good ABS control unit .ndr€d|eck.
Wire side of temale termioals
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DTC 81: Central Processing Unit (CPUI
- with the ignition 3witch ON{ll}. the ABS indicator doesnot go off.- Whh the SCS sewice connec-tor connectod {see page 1938),DTC 81 b indicatod.
Problem vorific.tion:L Erase rne u t L.2. Test-drive the vehicle.
Does the ABS indicator come onand is DTC 81 indicated?R€place th. ABS control unit.
The system is OK at this time.
19-55
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Self-diagnosis Function
The heater control panel has a self-diagnosis function.
Running the Self-diagnosis Function'97 mod€l:
Turn the ignition switch ON {ll), then set the mode control dial to the Vent position, and the recirculation controt switch toRecirculate {recirculation indicator light comes on). Press and hold the recirculation control switch to Fresh (recirculation indi-cator light goes off). Continue to hold the switch; the recirculation indicator light will come on for two seconds. then it willblink the Diagnostic Trouble Code (DTC) to indicate a iaulty component. lf no DTC'S are found, the indicator liqht will notblink atter the initial two second light.
'98 - 00 models:
Set the mode control dial to the Vent position, and turn the ignition switch ON (ll). Within six seconds after turning the igni-tion switch on, press the recirculation control switch the required number of times depending on the recirculation indicatorlight status:
.lftheindicatorlightisON,presstherecirculationcontrol switch five times..lftheindicatorlightisOFF,presstherecirculationcontrol switch six I|mes.The recirculation indicator light will come on for two seconds, then blink the Diagnostic Trouble Code (DTC) to indicate afaulty component. lf no DTC'S are found, the indicator light will not blink after the initial two second liqht.
DTC Indicaiion Pattern {See DTC 3}:
Rocirculationindicatorlight on
Recirculrtionindicatorlighi off'97 model:P.ess and hold th6 recircul.tioncontrol switch'98 - 00 modek:Within six second3 atter theignition switch b turned ON (lll.Prass the rocirculation controlswitch the required number oltimes depending on the r6circu-lation indicator light striu3
,r*
/1.5 aaa 0.3 aac
RECIRCULANONINDICATOR LIGHT
In case of multiple problems, the recirculation indicator light indicate only one DTC that is the least number of blinks.
Resetiing the Solf.diagnosis Funqtion
Turning the ignition switch OFF will cancel the self-diagnosis function. After service work, run the self-diaqnosis functiononce again to check that there is no other Droblem.
MODE CONTROL OIAL
Diagnostic
trouble
code {DTCI
R6circulation
indicator lightComponent with problsmPossiblo causcSee page
'lOne blinkAir mix control molorOpen or short circuit, obstructed door,
faulty motor22-12
2Two blinksElower motorOpen or short circuit, faultv motor22-14,16
Three blinksEvaporator temperature sensorOpon or short circuit, faulty sensor22-20
t
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Special Tools
Ref. No. Tool NumberDescriptionOty I Page Reference
o"'
@-,/a\
@rA*,
07HAz - SG00500
07PM - 0010100
07sAz - TB40114
07TAZ - SZ50114
o7T AZ - OO1O20A
Deployment Tool
SCS Service Connector
SRS Inflator Simulator
SRS Simulator Lead C
Backprobe Adapter, l7 mm
1
1'1
I
2
24-91
24-21
24-50
24-50
24-43* 1: Included in SRS Tool Set 07MAZ - SM5000B*2: Use with the stacking patch cords from T/N 07SAZ - 0010004, Backprobe Set.
o@
/no
24-14
.-
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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
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)
B.The SRS indicator light can also indicate the DTC by the number oJ blinks when the SCS service connector is connecr-ed to the service check connector (2P).
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 completely reset and will not output DTCS.
SEBVICE CHECK CONNECTOR I2PIIALK, BRNI
1.
)
SEBVICE CONNECTOR07PAZ - 0010100
2. Turn the ignition switch ON (ll). The SRS indicator light comes on for about six seconds and then goes off. Then it willindicate 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.- In case of a continuous failure. the DTC will be indicated repeatedly (see example 1 below).- In case of an intermittent failure, the SRS indicator light will indicate the DTC one time, then it will stay on (see exarn-pte 2 below).- 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 Jrom the servicecheck connector (2P).
Examples of DTC Indications:
1. Continuous failure, SRS Indicator Light is:0.3 s
, s --l f.-, s --.l0.3 s 0.3 5 0.3 s
li-rMain code (1) Sub-code (2)
DTC r.2
--l fl-!
--1 M.h@de r--r f--l F --l FM.a^ code (rt Sub-cod6ltl.............v_otc I rThird.mGr .oconl
Light srayson in cas€ ol
2.
DTC21Mo6t r.@nl p.oblem
Intermittent failure, SRS Indicator Light is:
)
3. Normal (no failure), SRS Indicator Light is:
DTC 5,1
24-27
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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
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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
--
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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
--
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