Cat HONDA CR-V 2000 RD1-RD3 / 1.G Workshop Manual
[x] Cancel search | Manufacturer: HONDA, Model Year: 2000, Model line: CR-V, Model: HONDA CR-V 2000 RD1-RD3 / 1.GPages: 1395, PDF Size: 35.62 MB
Page 1313 of 1395
Gomponent/Wiring Locations Index -'98 - 00 models
SRS INDICAIOR LIcHT (ln the gauge assembty)Troubleshooting, page 24 27Gauge assembly. section 23
DASHBOARD WIRE HARNESSto SRS INDICATOR LIGHf inGAUGE ASSEMBLY5P CONNECTOR
FRONT PASSENGER'S AIRBAGReplacement, page 24-89Disposal, page 24 97
CABLE REELReplacement,page 24-91
To HORN SWITCH
To CRUISE CONTROLSET/RESUME SWTCH
To DRIVER'S AIRBAG
ro CABLE REEL2P CONNECTOR
MAIN VYIRE HARNESSto DASHBOARD WIRE HARNESS
SRS MAIN HARNESS
ORIVER'S AIRBAGReplacement,page 24-87Disposal, page 24-97
SRS UNIT
SRS MAIN HARNESSto FROI{T PASSENGER,S AIRBAG2P CONiIECTOR
RIGHT SIDE WIRE HARNESS toSEAI BELTTENSIONER2P CONNECTOR24P CONNECTOR
SRS MAIN
SRS MAIN HARNESS toLEFT SIDE WIRE HARNESS2P CONNECTOR
SRS MAIN HARNESSto MAIN WIRE HARNESS3P CONNECTOB
(lncluding safing sensorand impact sensor)Replacement, page 24-95
SRS MAIN HARNESS toRIGHT SIDE WIRE HARNESS2P CONNECTOR
SERVICE CHECKCONNECTOR I2PIIBLK BRNI
to UNDER-DASHFUSE/RELAY BOX2P CONNECTORSEAT BELT TENSIONERReplacement, page 24 3Disposal, page 24-97
ORIVER'S SEAT BELTMEMORY ERASE SIGNAL(MES) CONNECTOR I2PIIGRN, GRNI or IWHT, BLKIReplacement, page 24-3Disposal, page 24-97
LEFT SIDE WIRE HARNESS toSEAT BELTTENSIONER2P CONNECTOR
24-16
.4
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Page 1314 of 1395
Description
J)
The SRS is a safety device which, when used in conjunction with the seat belt, is designed to help protect the driver and
front passenger in a frontal impact exceeding a certain set limit. The system consists of the SRS unit (including safing sen-
sor and impact sensor), the cable reel, the driver's airbag and front passenger's airbag.
Seat Bolt Tensioner {'98 - 00 models}
The seat belt tensioner is linked with the SRS airbags to further increase the effectiveness of the seat belt. In a front-end
collision, the tensioner instantly retracts the belt firmly to secure the occupants in their seats
FRONT PASSENGER'SAIREAGDRIVER'S AIRBAG
FRONT PASSENGER'SSEAT BELT TENSIONER{'98 - 00 modelsl
)
SRS UNITDRIVER'S SEAT BELTTENSIONER l'98 - 0O modeb)
Operation
The main circuit in the SRS unit senses and judges the force of impact and, if necessary, ignites the intlator charges. lf bat
tery voltage is too low or power is disconnected due to the impact, the voltage regulator and the back-up power circuit
respectively will keep voltage at a constant level.
For the SRS to operate:
(1) The impact sensor must activate, and send electric signals to the microprocessor.
(2) The microprocessor must compute the signals, and send them to the airbag inflators (and seat belt tensioners).
(3) The inflators must ignite and deploy the airbags (and activate the tensioners).
Selt-diagnosis System
A self-diagnosis circuit is built into the SRS uniU when the ignition switch is turned ON (ll), the SRS indicator Iight comes
on and goes off after about six seconds if the system is operating normally.
lf the light does not come on, does not go off after six seconds, or it comes on while driving, it indicates an abnormality in
the system. The system must be inspected and repaired as soon as possible.
For battery serviceability, 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).
198
---__-l
TENSTO1En II
_-___J- 00 N4ode s)
24-17
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Page 1315 of 1395
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
-4
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Page 1317 of 1395
Precautions/Procedures
SRS Unit Precautions
Take extra care 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 driver's/front passenger's airbag con-
nectors and seat belt tensioner connectors before
working below the dashboard near the SRS unit.
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
detormed, reolace it,
Be sure the SRS unit is installed securelv.
Do not disassemble the SRS unit.
Store the SRS unit in a cool {less than about
104"F/40"C) and dry {less than 80o/o humidity. no
moisture) place. Do not spill water or oil on the SRS
unit, and keep it awav from dust.
During installation or replacement, be careful not to
bump (impact wrench, hammer, etc.) the area a[ound
the SRS unit, The airbags could accidentally deploy
and cause damage or injury.
24-20
,..4
Inspection After Deployment
After a collision in which the airbags were 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 repaired, turn the
ignition switch on. 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.
rD
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Page 1318 of 1395
JWiring Precautions
. Never attempt to modify, splice or repair SRS wiring.
NOTE: SRS wiring can be identified by special yellow
outer coveflng.
Be sure to install the harness wires so that they are
pinched or interfering with other 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.
GROUND TERMINAL
CONTACT
CONTACT
24-21
Spring-loaded Lock Connestor with
Built-in Short Gontact
The driver's airbag/front passenger's airbag and seat
belt tensioners have a spring-loaded lock connector with
a built-in short contact. When this connector is discon-
nected, the power terminal and the ground terminal in
the airbag connector are automatically shorted.
Conngctor halvcs diSconnested:
GROUND TERMINAL
SHORT CONTACT
CABIf REEL CONNECTOR
Connector halves connected;
ACT
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Page 1322 of 1395
)Steering-related Precautions
Stooring Wh€el and Csble Re6l Alignm€nt
To avoid misalignment of the steering wheel on
reassembly, make sure the wheels are turned straight
ahead beJore removing the steering wheel.
To center the cable reel, rotate the cable reel clockwise
until it stops, Then rotate it counterclockwise (approxi-
mately two and a half turns) until the arrow mark on the
cable reel label points straight up.
Steering Column Bemoval
CAUTION: Before removing the stosring column, tirsi
disconneqt tha connsctor between tho cabls roel and
the SRS main harness.
lf the steering column is going to be removed without
dismounting the steering wheel, lock the sieering by
turning the ignition key to o-LOCK position, or remove
the key trom the ignition so that the steering wheel will
not turn.
LABEL
NOTE:
. When the airbag and cable r6el 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 con-
nector, refer to page 24-22.
'97 model:
SRS MAIN HARNESS2P CONNECTORCABLE REEL2P CONNECTOR
'98 - 00 models:
UNDER-DASHFUSE/RELAY BOX
Do not replace the original steering wheel with any other
design because it will make it impossible to properly
install the airbag (use only genuine Honda replacement
partsl.
After reassemblv, confirm 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 whee .
24-25
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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
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Page 1324 of 1395
)
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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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
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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
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