Page 1786 of 2189
Troubleshooting
DTC 1-5
CAUTION: Whenever the ignition switch is ON {ll). or
has been turned OFF for less than three minutes, be
caretul not to bump ths SRS unit; the airbag(sl could
accidentally deploy and cause damage or iniuries.
J
DRIVER'S AIRBAG2P CONNECTOR
SRS MAIN HARNESS2P CONNECTOR
DRIVER'S AIRBAGASSEMBLY
REEL
07sAz - TB40't1A(2 0 JACK)
2P CONNECTOR
AZ - SZ5011A
CABLEREEL2P CONNECTOR
I
07TAZ - SZ5011A
Try to rep.oduce the SRS indicator light:1. Erasethe DTC memorv (See page 24'15).2. Turn the ignition switch ON (ll), and check that the SRS indicator light comes on tor about six seconds and goes off.
Ooes the SRS indicator light stay onl
YESNO
Intermittent lailure, system is OK at this time. See Trouble-shooting lntormittent Failure3 on page 24-15.
Check for a short to ground in lh€ driver's airbag inllator:1. Turn the ignition switch OFF.2. Disconnect the battery negative cable, then disconnectthe positive cable, and wait for three rninutes.3. Disconnect the driver's airbag 2P connector from thecable reel 2P connector.CAUTION: Do not disconnect tho p.ssenger's airbagconnectoa.4. Connect the specialtool (2 0)to the cable reel 2P connector.5. Reconnect the batlery positive cable, then reconnect thenegative cable-6. Erase the DTC memory (see page 24-15).7. Read the DTC (see page 24-131.
ls OTC 1-5 indicatedT
YESNO
Short to ground in the drive/s airbeg inflator; r€pl.ce thedriver's.iib.g (see page 24d1.
Check lor a short to ground in the csble reer:l. Disconnect the battery negative cable, then disconnectthe positive cable, and wait for three minutes.2. Disconnect the special tool {2 (}) from the cable reel 2P
3. Remove the dashboard lower cover, and disconnect thecable reel 2P connector from the SRS main harness.4. Connect the Special tool {2 0} to the SRS main harness2P connector (cont'd).
To page 24-49
{2 0 JACK)
24-44
.I
Page 1789 of 2189
From page 21 50
Check for an open in the SRS main ha.ness:
1. Disconnect the battery negative cable, then disconnect
the positive cable, and wait for three mrnrrtes
2. Disconnect the driver's airbag 2P connector from the
cable reel2P connector (see page 24 11)
3. Disconnect the SRS main harness 18P connector from
the SRS unit. Do not disconnect the special tool (2 0)
from the SRS main harness 2P connector'
4- Check resistance between the No. 10 terminal and No. 14
terminal of the SRS main harness 18P connector' There
should be apProx 2 0 3.0 0
ls the resislance as specified?
NOYES
Poor contact at the SRS m.in harness 18P connector;
check the connector'. ll the connector is OK, substituto a known_good SRS
unh. and rccheck,.lf the probl€m is still present, replace th€ SRS main
narness,
Ooen or incretsed resistance in the SRS m.in harness;
replac6 the harness.
SRS UNIT
SRS MAIN18P CONNECTOR
.J
l0
24-51
Page 1791 of 2189
l
)
)J
Frcm page 24-52
Check tor a short to another wira or docroased tesistanco in
th€ SRS main hamess:1. Disconnect the battery negative cable, then disconnect
the positive cable, and wait tor three manutes.
2. Disconnect the driver's airbag 2P connector from the
cable reel 2P connector.3. Disconnect the SRS main harness 18P connector from
the SRS unit. Do not disconnect the special tool (2 0) Irom
the SRS main harness 2P connector.4. Check rosistance between the No. 10 terminal and No. 14
terminal of the SRS main harness 18P connoctor. There
should be approx. 2.0 - 3.0 f).
SRS MAIN HARNESS18P CONNECTOR
Itt
24-53
Page 1793 of 2189
)
Ftom page 24-54
Check lor e short to power in lhe SRS main harness:
1. Disconnect the battery negative cable, then disconnect
the positive cable, and wait Ior three minutes.
2. Disconnect the driver's airbag 2P connector lrom the
cable reel 2P connector.3. Disconnect the SRS main harness 18P connector trom
the sRs unit.4. Remove the special tool (2 o) from the SRS main harness
2P connector,5. Reconnect the baftery positive cable, then reconnect the
negative cable.6. Connect a voltmeter between the No. 10 (+) terminal of
SRS main harness 18P connector and ground.
7. Turn the ignition switch ON lll), and measure voltage
There should be 0.5 V or less.
L Connect a voltmeter between the No. 14 (+) terminal of
the SRS main harness 18P connector and ground, and
measure voltage. There should be 0.5 V or less.
A16 voltages as specified?
YESNO
Fauftv SRS unit; repl.ce the SRS unil (see ptge 24-761
Shon to power in th. SRS main harness; roplace the SRS
main hanes3,
SRS UNIT
1J
Itt
24-55
Page 1795 of 2189
)From page 24-56
Check lor a short to ground in tha SRS main haino$:
1. Disconnect th€ battery negative cable. then disconnect
the positive cable, and wait for three minutes
2. Disconnect the driver's airbag 2P connector from the
cable reel 2P connector'3. Disconnect the SRS main harness 18P connector from
the sRS unit.4. Remove the special tool (2 0) from the SRS main harness
2P connector,5. Check resistance b€tween the No. 10 terminal ol the SRS
main harness 18P connector and ground, and between
the No. 14 terminal ot the SRS main harnoss 18P connec
tor and ground. There should be 1 N/10 or more'
k tho rod.tanco .3 3pocified?
YESNO
Faulty SRS unit; topl.co the SRS unit (seo page 24-761'
Short to giound in the SRS msin hamets; replacc th€ SBS
main harno33.
SRS UNlT
SRS MAIN HARNESS18P CONNECTOR
O l,t
24-57
Page 1796 of 2189
Troubleshooting
DTC 2-1 and DTC 2-2 - Wathout Front Passenger's Airbag
CAUTION: Whenever the ignition switch is ON {lll. or
has been turned OFF tor less than three minutes, be
caretul not to bump the SRS unit; the aidag could acci-dentally deploy and causs damage or iniuries.
Try to reproduc€ the SRS indicator light:1. Erase the DTC memory {see page 24-15r.2. Turn the ignition switch ON (ll), and check thatthe SRS indicator light comes on lor about six seconds and ooes off.SRS UNIT
Intermittent failu.e, system is OK at this time. Se€ Trouble-Intermifient Failuies on paqe 24-15.
OUMMY RESISTOR
Check for an open oa increased resistance in the dummvteslstot:1. Turn the ignition switch OFF.2. Remove the dummy resistor from the SRS main harness2P connector,3. Check the resistance between the A and B terminals ofthe dummy resistor. There should be 1.5 - 2.5 0.
resistoa.
Check lor an open or incre.sed resisiance in the SRS mainharness:'1. Disconnect the battery negative cable, then disconnectthe positive cable, and wait for three minutes.2. Disconnect the driver's airbag 2P connector from thecable reel2P connector lsee page 24 t t).3. Disconnect the SRS main harness t8p connector fromthe SBS unit.4. Connect the dummy resistor to the SRS main harness 2pconnector.5. Check resistance between the No- 1O terminal and No. 14terminal of the SRS main harness 18p connector. Thereshould be aDorox. 1.5 - 2.5 0.
SRS MAIN HARNESS18P CONNECTOR
ls the resistance es speciti€d?
YES
Poor contact ar the SRS main hahess 18p connector;check the connector.. lf the connector is OK. substitute a known-good SRSunit, and recheck.. lf the problem is still present. repbce the SRS mainnarness.
24-5A
\
Ooes the SRS indicalor light stay on?
Open or increased resi3tanc6 in tho SRS main harness;OU
I
Page 1797 of 2189
)DTC 2-3 - Without Front Passenger's Airbag
CAUTION: Whenever the ignition switch is ON (lll, ot
has been turned OFF for less than three minutes, be
careful not to bump thc SRS unit; the ailbag could acci-
dentally deploy and cause damage or iniuries.
Try to reproduce the SRS indicator light:
1. Erase the DTC memory tsee page 24 15).
2. Turn the ignition switch ON (ll), and check that the SRS indi-
cator light comes on for about six seconds and goes off
Ch6ck for a Short to another wile or decreased resistance in
the dummy resistor:1. Turn the ignitaon switch OFF.
2. Remove the dummy resistor from the SRS main harness
2P connector.
SRS UNIT
DUMMY RESISTOR
3. Check the resistance between the A and B terminals of
the dummy resistor. There should be 1-5 - 2.5 O.
Check for a short to another wile or decrea36d r6istance in
the SRS main harness:1. Disconnect the battery negative cable, then d'sconnect
the positive cable, and wait for three m inutes
2. Disconnect the driver's airbag 2P connector from the
cable reel 2P connector (see page 24-l l)
3. Disconnect the SRS main harness 18P connector from
the sRs unit.NOTE: Do not connect the dummy resistor to the SRS
main harness 2P connector.
4. Check resistance between the No lO terrninal andNo lil
terminal of the SRS main harness 18P connector' There
should be 1 M0 or more.
ls the resistance as
YES
SRS MAIN HARNESS
2P CONNECTOR
IJAB
ifti
|T'ti^i
DUMMYRESISTOR
SRS UNIT
SRS MAIN HARNESS18P CONNECTOR
24-59
Does the SRS indicator light staY on?
lntermittent failure, system is OK ai this time See
Int€rmittont Failures on page 2/a'15
ls the resistance as specifiod?
Faufly SRS unit; replace tho SRS unit l3ee page2+761'
Short to another wiro or decreased resistance in the SFS
main harness; replace the SRS main harne3s.
att
Page 1798 of 2189
Troubleshooting
DTC 2-4 - Without Front Passenger's Airbag
CAUTION: Whenever the ignition switch is ON 0l). orhas been turned OFF for lsss lhan three minutes. becaretul not bump the SRS unit; the airbag could acci-dentally doploy and causo damage or iniuries.
Try to r€produc€ tho SRS indic.to. light:1. Erase the DTC memory (see page 24,15).2. Turn the ignition switch ON (ll), and check that the SRS indi-cator light comes on for about six seconds and go€s off.
Do€rthe SRS indicrtor light stay on?
NOrEs
lntormitteit t ilur., iyst m b OK at thb tim6. Sle Troubleshooling Intdmitt.nt Frilu.os on pag6 2+lS.
Check for a short to power in the SRS main h.rna3s:1. Disconnect the baftery negative cable, then disconnectthe positive cable, and wait for three minutes.2. Dlsconnect the driver's airbag 2p connector from thecable reel 2P connector (see page 24,11).3. Dlsconnect the SRS main harness l8p connector tromthe SRS unit.4. Beconnect the battory positiv€ cable, then reconnect thenegative cable.5. Connect a voltmeter between the No. lO (+) terminal ofthe SFS main hsrness 18P connector and qround.6. Turn the ignition switch ON {ll), and me-asure voltage.There should be 0.5 V or less.7. Connect a voltmeter between the No. 14 (+) terminal ofthe SRS main harness 18P connoctor and ground, andmeasure voltage. There should be 0.5 V or less.
A.e voltage. .3 spocifi.d?
YES NO
F.ulty SRS uniC .epla"" tl,. SnS unn l""" p"g" 2+7O:_l
Short to pow.r in tha SRS mlin harnc$ or tho dummyr*istor; chock lor contact bctwcen th. dummy r6ai3to. rndrnother wiro. lf there is no contrct, rcphcc the SRS msinhame3s.
SBS UNIT
SRS MAIN18P CONNECTOR
24-60
I
