1999 HONDA CR-V Workshop Manual

Troubleshooting
DTC 4-5
GAUTION: Whonever the ignition switch is ON fll). olhas be6n turned OFF for less than thrso minuter. becareful not to bump the SRS unit; the airbags couldaccidontally deploy and causo damage or iniurias.
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RIGXT SIOE WIREHARNESS2P
FRONTPASSENG€R'S
SRS SIMULATORLEAD C07lAz - s2501 1Aand SRS INFLATORSIMULATOR
t2 0 JACKTo?saz - Taaol 1A
Try to roproduco th. SRS indicrtor tighi:1. Erase the DTC memory (see page 24-28).2. Turn the ignition switch ON (ll), and check that the SRSindicator light comes on for about six seconds, and thengoes off.
Doe3 the SRS indicator light stay on?
YESNO
Int€rmittent t.ilurG, syst.m is OK at thi! timo. So€Troubleshooting Inte.mift€nt Failure3 on psqa 2+28.
Chcck Ior a shon to ground in the trodt pars€nge/s lert behtensionea:1. Disconnect the negative battery cable, and wait for threemrnutes.2. Disconnect the front passenger's seat belt tensioner 2pconnector trom the right side wire harness 2p connector(see page 24-23). Do not disconnect the driver's seat bektensioner 2P connector.3. Connect the special tool (2 0) to the right side wire har-ness 2P connector,4. Reconnect the negative battery cable.5. Erase the DTC memory lsee page 24-28).6. Read the DTC (seo page 24-26!-.
k DIC G5 indicated?
NOYES
Short to ground in the Lont passengc.'3 3€rt boh ton-sioner; replace tho from p.rlenger's sort beh ls€a page21-3t.
To page 24-81
24-80
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From page 24'80
Check lor a short to ground in the sido wir€ harness:1. Disconnect the rightsidewire harness 2P connector fromthe SRS main harness 2P connector.2. Connect the special tool {2 O) to the SRS main harness2P connector.3. Erase the DTC memorv.4. Read the DTC.
b DTC 4-5 indicrtad?
YESNO
Short to ground in the right side wire harness; replac.the harne3!.
Check tor a short io ground in the SRS main ha.nessi1. Disconnect the negative battery cable, and wait for threeminotes,2. Disconnect the driver's and front passenger's airbags,and driver's seat belt tonsioner connectors (see page 24-231.3. Disconnect the SRS main harness 18P connector from
4. Disconnect the special tool (2 0) from the SRS main har-ness 2P connector.5. Check resistance between the No. 5 terminal oI the SRSmain harness 18P connector and body ground, andbetween the No. 12 terminal of the SRS main harness18P connector and body ground. There should be 1 M0or more,
b th€ re3i3tance as specified?
NOYES
Faulty SRS unit replace the SRS unit {see pace 2a-951.
Short to ground in the SRS main harness; replace the SRSmain harnoss.
RIGHT SIDE WIREHARNESS2P CONNECTOR
SRS MAIN HARNESS2P CONNECTOR
SRS SIMULATORLEAD C07TAz - SZ5011Aand SRS INFLATORSIMULATOR \{2 0 JACK} \07SAZ-TB,O114 \I
ffi
)
SRS MAIN HANNESS18P CONNECTOR
24-81
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Troubleshooting
DTC 8-6 -'97 model
CAUTION: Whonever th€ ignition switch is ON fll). olhas b€en turned OFF for les3 than thro€ minutes, becaretul not to bump the SRS unit; tho airbags couldaccidentally deploy and cause damage or iniurios.
Besides indicating an abnormality in the SRS unit, DTC8-6 may also indicate that two problems equivalent toDTC 1-1 and 2-4, 'l-4 and 2-1, or 1-4 and 2-4 occurred atthe same time. Proceed in the order shown below.
18P CONNECTOR
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Chock the SBS main harnGs:1. Disconnect the battery negative cable, then disconnectthe positive cable, and wait for three minutes.2. Disconnect the driver's airbag and front passenger,safrDag connectors {see page 24-23).3. Disconnect the SRS main harness t8p connector fromthe sRs unit.4. Reconnect the battery posative cable, then reconnect thenegative cable.5. Turn the ignition switch ON 0t).6. Connect a voltmeter and measure voltage between theNo. 10 terminal ot the SRS main harness l8p connectorand ground, and between the No. 14 terminal and qround.There should be aDorox.0-0.5 V.
Are voltages as specitied?
NOYES
Shon to power in tho SRS main harness; reglace the SRSmain harn€63.
Chock the SRS mein harnels and the cable re€l:Connect a voltmeter and measure voltage between the No. 1terminal of the SRS main harness l8p coonector andground, and between the No. 13 terminal and ground. Thereshould be approx.0 0.5 V.
Are voltages as specifiod?
YESNO
Faulty SRS unit; replace the SRS unit {sae pago 24-951.
To page 24-83 (A)
24-82
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)
)
From page 24-82 iA)
Check the cable reeli1. Turn the ignition switch OFF.2. Disconnect the cable reel 2P connector from the SRSmain harness,3. Turn the ignition switch ON lli).4. Connect a voltmeter and fieasute voltage beNveen theNo. 'l terminal oI the SRS main harness 18P connectorand ground, and between the No. 13 terminal andground. There should be approx. 0 - 0.5 V.
Are voltagcs as specifiod?
YESNO
Short to powor in the cable reel; replace the cable reel{soo oaqa 24-921.
Short to powe. in ths SRS main harn633; replaco tho SRSmain harness.
Lll l| i,ltufiffifil-]ll
24-83
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Troubleshooting
DTC 9-2 -'97 model
CAUTION: Whenever the ignition switch is ON flll, orhas been turned OFF tor loss than thrse minute3, bscareful not to bump the SRS unit; lhe airbags couldaccidentally doploy and causo damage or iniuriss.
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Ch6ck the tuso:1. Turn the ignition switch OFF.2. Check tor blown No. 23 (10 A) fuse in the !nder-dashIuse/relay box.
Replace the fuse. Turn the ignition switch ON {ll}, and ch€ckthat the fuse doesnt blow.
Tho problem has dilappeared. T6t-drive the vohid€ andsee Troubl6hogting Intermittedt Failur6 on prgc 2il-2g.
Check for shon to ground botween the undor-darh fu36,/relay box and tho SRS unit.1. Turn the ignition switch OFF.2. Disconnect the battery negative cable, then disconnectthe positive cable, and wait for three minutes.3. Disconnect the driver's and front passenger,s airbag con-nectors {see page 24,23).4. Disconnect the SRS main harness 18p connector from
5. Check resistance between the No. 3 terminal of the SFSmain harness 18P connector and grouncl.There should be 1 M0 or more.
Faufty SRS unit; replaco th6 SRS unit {3e€ page 2t-951.
(A) To page 24-85
To page 24-85
No. 23 110 Al FUSE
FUSE/RELAY BOX
sRs18P CONNECTOR
24-84
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from page 24'84(B)
Ch6ck fo. short io ground in the SRS main harnes!:1. Disconnect the SRS main harness 2P connector lrom theunder-dash fuse/relay box.2. Check resistance between the No. 3 terminal of the SRSmain harness 18P connector and ground. There shouldbe 1.0 MO or more.
ls the resbtanco as soecitied?
YESNO
Short to ground in the undor-dalh fuse/relay box;r€placo th€ under-da3h fuse/relav box.
Short to ground in the SRS main harneas; replaco the SRSmain harneas.FUSE/RELAY BOX
Ch€ck for an open in the SRS main harnes:1. Turn the ignition switch OFF.2. Disconnect the battery negative cable, then disconnectthe positive cable, and wait tor three minutes.3. Disconnect the driver's and front passenger's airbag con-nectors {see page 2il 23).4. Disconnect the SRS main harness 18P connector fromthe sRs unit.5. Reconnect the baftery positive cabie, then reconnect thenegative cable.6. Connect a voltmeter between the No. 3 terminal of theSRS main harness 18P connector and oround.7. Turn the ignition switch ON (ll) , and measure
Poor contrct at the SRS main harn€ss 18P connector;check the connectoa.. lf the connsctor is OK, substitute a known-good SRSunit, and rccheck.. lf the problom is still present. replaco the SRS mainharness,
(A) From page 24-84
To page 24'86
SRS MAIN HARNESS18P CONI{ECTOR
SBS MAIN HARNESS18P COI{l{ECTOR
(cont'd)
24-85
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Troubleshooting
DTC 9-2 -'97 model lcont'dl
UNDER.OASHFUSE/RELAY BOX
SRS MAII{ HARI{ESS2P CONNECTOR
24-86
From page 24-85
Check for an open in the SRS main harness:1. Turn the ignition switch OFF.2. Disconnect the SRS main harness 2p connector from theunder-dash fuse/relay box.3. Check resistance between the No. 2 terminal of the SRSmain harness 2P connector and the No. 3 terminal of theSRS main harness 18P connector.There should be 0-0.5 0.
ls th6 resistance as soecified?
YESNO
Poor contact at the SRS main harness 2p connector;check tho connector,. lf the connector i3 OK, substituto a known-good und€r-dash fuse/relay box, and recheck.. lf the problem is still present, roplace the SRS mainnatness,
Open in the SRS main harn$s;.eplace the SRS main har-ness.
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Driver's Airbag
1.
Replacement
After a collision in which the airbags were deployed, the
airbags, the seat belt tensioners (if so equipped), and
the SRS unit must be replaced.
@ Store a removed airbag with the pad su.-
tacs up, lf th€ airbag is improperly stored face down.
accidental deployment could propal the unit with
enough forc€ io causg serioug iniury.
CAUTION:
. Always disconnoct the drivor's airbag connector
when the SRS main harness is disconnactod.
. Do not disassemble or tamper with ihe airbag.
NOTE:
Do not install used SRS parts from another vehicle,
When repairing, use only new SRS parts.
Carefully inspect the airbag before you install it. Do
not install an airbag that shows signs of being
dropped or improperly handled, such as dents, cracks
or deformation.
Disconnect the battery negative cable, then discon-
nect the positive cable from the battery, and wait at
least three minutes.
Remove the access panel from the steering wheel.
then disconnect the 2P connector between the driv-
er'6 airbag and cable reel. When disconnected. the
airbag connector is automatically shorted.
2P CONNECTON
ACCESS PANEL
24-87
3. Remove the two Torx bolts from the steering whsel,
and disconnect the horn connector. Remove the
driver's airbag,
(cont'd)
DRIVER'S
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