Honda Civic Service Manual page 1800

Troubleshooting
DTC 2-4 - Without Front Passenger's Airbag
CAUTION: Whenever the ignition switch is ON 0l). or
has been turned OFF for lsss lhan three minutes. be
caretul 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?
NO
rEs
lntormitteit t ilur., iyst m b OK at thb tim6. Sle Trouble
shooling 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 disconnect
the positive cable, and wait for three minutes.
2. Dlsconnect the driver's airbag 2p connector from the
cable reel 2P connector (see page 24,11).
3. Dlsconnect the SRS main harness l8p connector trom
the SRS unit.
4. Beconnect the battory positiv€ cable, then reconnect the
negative cable.
5. Connect a voltmeter between the No. lO (+) terminal of
the 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 of
the SRS main harness 18P connoctor and ground, and
measure 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 dummy
r*istor; chock lor contact bctwcen th. dummy r6ai3to. rnd
rnother wiro. lf there is no contrct, rcphcc the SRS msin
hame3s.
SBS UNIT
SRS MAIN
18P CONNECTOR
24-60
I