check engine HONDA CIVIC 2003 7.G Workshop Manual

sRs
DTC Troubleshooting (cont'dl
13. Check voltage between the No. 10 terminal of SRS
unit connector A (18P) and body ground. There
shouid be 'l V or less.
SRS UNIT CONNECTOR A {,I8P)
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Wire side oI female terminals
ls the voltage as specitied?
YES-Go to step 14.
NO-Short to power in the engine compartment
wire harness or dashboard wire harness B; replace
the faulty harness.l
Turn the ignition switch OFF.
Connect the SRS inflator simulator (jumper
connector) and simulator lead H to the engine
compartment wire harness 2P connector (A).
07YAZ-S3AA100
07SAZ-TB,O11A
14.
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16. Check resistance between the No. 10 and No. 11
terminals of SRS unit connector A (18P). There
should be 1 0 or less.
SRS UNIT CONNECTOR A Il8PI
Wire side of female terminals
ls the rcsistance as specified?
YES Faulty left front impact sensor or SRS unit;
replace the left front impact sensor (see page 23-125).
lf the problem is still present, replace the SRS unit(see page 23-122).1
NO-Poor connection at C401, faulty engine
compartment wire harness, or faulty dashboard
wire harness B. Inspect C401. lf it is OK, replace the
faulty harness.l
= \y,

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DTC 9-7: Faulty Right Front lmpact Sensor
Special Tools Bequired. SRS inflator simulator 07SAZ-TB4011A. SRS simulator lead H 07YM-S3AA100
1. Erase the DTC memory {see page 23-26).
2. Turn lhe ignition switch ON {ll), and checkthatthe
SRS indicator comes on for about 6 seconds and
then goes off.
Does the SRS indicator stay on?
YES-Go to step 3.
NO Intermittent failure, system is OK at this time.
Go to Troubleshooting Intermittent Failures (see
page 23-26).
3. Turn the ignition switch OFF. Check the
connections between SRS unit connectorA (18P)
and the SRS unit, between the engine
compartment wire harness 2P connector and the
right front impact sensor (see page 23-13), and at
connector C401.
Are the connections OK?
YES-Go to step 4.
NO Repair the poor connections and retest. lf DTC
9-7 is still present, go to step 4.
Turn the ignition switch OFF. Disconnect the
battery negative cable, and wait for 3 minutes.
Disconnect the driver's airbag 4P connector from
the cable reel {see step 2 on page 23-21).
Disconnect the front passenger's airbag 4P
connector from the dashboard wire harness (see
step 3 on page 23-21).
Disconnect both seat belt tensioner 2P connectors
from the floor wire harness (see step 5 on page 23-
22).
4.
5.
7.
I
'10.
Disconnect the engine compartment wire harness
2P connector (A) from the right front impact sensor.
Disconnect SRS unit connector A (18P) from the
SRS unit (see step 7 on page 23-221.
Check resistance between the No. 1 and No. 12
terminals of SRS unit connector A (18P). There
should be an open circuit, or at least 1 M 0.
SRS UNIT CONNECTOR A (18PI
GRN
11.
Wire side ol female terminals
ls the resistance as specified?
YES Go to step 11.
NO-Short in the engine companment wire
harness or dashboard wire harness B; replace the
faulty harness,I
Reconnect the battery negative cable.
Turn the ignition switch ON (ll).
(cont'd)
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23-79

sRs
DTC Troubleshooting (cont'd)
13. Check voltage between the No. 1terminal ofSRS
unit connector A (18P) and body ground. There
should be 1 V or less.
SRS UNIT CONNECTOR A I18P}
Wire side of female terminals
ls the voltage as specified?
YES Go to step 14.
NO-Short to power in the engine compartment
wire harness or dashboard wire harness B; replace
the faulty harness.l
Turn the ignition switch OFF.
Connect the SRS inflator simulator (jumper
connector) and simulator lead H to the engine
compartment wire harness 2P connector (A).
14.
07YAZ-S3AA100
23-80
16. Check resistance between the No. 1 and No. '12
terminals of SRS unit connector A (18P). There
should be 1 O or less.
SRS UNIT CONNECTOR A {18P)
GRN
Wire side of female terminals
ls the resistance as specitied?
YES Faulty right front impact sensor or SRS unit;
replace the rightfront sensor {see page 23-125). lfthe
problem is still present, replace the SRS unit (see
page 23-1221.a
NO- Poor connection at C401, faulty engine
compartment wire harness, or faulty dashboard
wire harness B. lnspect C401. lf it is OK, replace the
faulty harness, I
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