1999 HONDA CR-V service indicator

Circuit Diagram
UNDER.DASHFUSE/RELAYBOX
NOTE: The SRS main harness uses all GRY('97 model) or GRN ('98 - 00 models) wires.
WHT/BLK -'- WHT
DRIVEB'SAIRBAGNFLATOR
A
#+
tt tll./ d I
GRY GRY(GRN) (GRN)
FRONTPASSENGER'SALRBAGINFLAlOR
tlGRY GFY(GFN) (GRN)
DRIVER'SSEAT EELTTENSIONER
FRONTPASSENGERSSEAT BELTTENSIONEF
GRN(BLU/PNK)
BLK
G401
24-18
PCM/ECM SERVICE MEMORY ERASECHECK S GNAL (MES)CONNECTOB CONNECTOR(2P)
DATA LINXCONNECTOR(Drc) (r6P)
Models)('98 - 00
IGNITION SWITCHUNDEF,HOOD FUSE/RELAY BOX
YEUGRN
+
PGM FImam relay
SFS INDICATOR CIRCUIT(ln lhe gauge assembly)
Shill loc* so enoid
BLU
GR\
GNY GRY
H
GFY GRYlcFNt (GlN)
??
I r-?LT BLU BRN BRN
tttr?F?F
VVV
SRS NDICATORL GHT {r.4W)
5 12 4 11 | 16 17 15 I 18 I
10 14 113
U
S8S UN T TERMINALS
3567I
101114151718
Terminal side of male terminals
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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.
:-
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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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