Front HONDA CIVIC 2003 7.G Workshop Manual

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DTC 13-3: No Signal from the Driver's Side
lmpact Sensor
Special Tools Required. sRs inflator simularor 07SAZ-TB4011A. SRS simulator lead H 07YM-S3AA100
1. Erasethe DTC memory (see p age 23-261.
2. Turn the ignition switch ON (ll), and check that the
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 lntermittent Failures (see
page 23-261.
3. Turn the ignition switch OFF. Disconnect the
battery negative cable, and wait for 3 minutes.
4. Check the connection between the floor wire
harness 2P connector and the driver's side impact
sensor.
ls the connection OK?
YES Go to step 5.
NO-Replace the driver's side impact sensor and/
or the floor harness, as needed. I
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5. Disconnectthe driver's side airbag and frontpassenger's side airbag 2P connectors (see step 4
on page 23-21). Also disconnect both seat belt
buckle tensioner 4P connectors (see step 6 on page
23-22).
6. Disconnect the floor wire harness 2P connector {A}from the driver's side impact sensor.
07sAz-TB4011A
7. Connect the SRS inflator simulator (2 Q connector)
and simulator lead H to the floor wire harness.
(cont'd)
23-91

sRs
DTC Troubleshooting {cont'd)
8. Disconnect SRS unit connector B ( 18P) from the
SRS unit (see step 7 on page 23-221.
9. Check resistance between the No. 8 and No. 15
terminals of sRS unit connector B ('l8P). There
should be 0 1.0 Q.
SRS UNIT CONNECTOR B I18P)
BRN/YEL
I:fr;f;l n3
10tlllro lrz lrs | \
LT GRN/RED
Wire side of temale terminals
Is the resistance as specitied?
YES Faulty driver's side impact sensor or SRS
unit; replace lhe driver's side impact sensor (see
page 23-123). lf the problem is still present, replace
the SRS unit (see page 23-122).1
NO Open in the floor wire harness; replace the
floor wire harness.l
23-92
DTC 13-4: Faulty Power Supply to the Driver's
Side lmpact Sensor
1. Erase the DTC memory {see page 23-261.
2. Turn the ignition switch ON (ll), and check that the
SRS lndicator comes on for about 6 seconds and
then goes off.
Does the SRS indicator stay on?
YES Go to step 3.
NO-lntermittent failure, system is OK at this time.
Go to Troubleshooting Intermittent Failures (see
page 23-26).
3. Turn the ignition switch OFF. Disconnectthe
battery negative cable, and wait for 3 minutes.
4. Disconnect the driver's side airbag and front
passenger's side airbag 2P connectors (see step 4
on page 23-21). Also disconnect both seat belt
buckle tensioner 4P connectors (see step 6 on page
23-22).

sRs
DTC Troubleshooting (cont'dl
DTC 14-3: No Signal from the Front
Passenger's Side lmpact Sensor
SpecialTools Required. SRS inflator simulator 07SAZ-TB401'lA. SRS simulator lead H 07YAZ'S3AA100
1. Erasethe DTC memory (see page 23-26).
2. Tu rn the ignition switch ON (ll), and check that the
SRS indicator comes on for about 6 seconds and
then goes off.
Does the SBS 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. Disconnectthe
battery negative cable, and wait for 3 minutes.
4. Check the connection between the floor wire
harness 2P connector and the front passenger's
side lmpact sensor.
Is the connection OK?
YES-Go to step 5.
NO- Poor contact between the floor wire harness
2P connector and the front passenger's side impact
sensor; replace the front passenger's side impact
sensor and/or the floor harness, as needed.
23-94
5.Disconnectthe driver's side airbag and front
passenger's side airbag 2P connectors (see step 4
on page 23-21). Also disconnect both seat belt
buckle tensioner 4P connectors (see step 6 on page
23-22t.
Disconnect the floor wire harness 2P connector {A)
from the front passenger's side impact sensor.
07sAz-TB4o11A
7. Connect the SRS inflator simulator (2 0 connector)
and the simulator lead H to the floor wire harness.

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8. Disconnect SRS unit connector B (18P)from the
SRS unit (see step 7 on page 23-221.
9. Check resistance between the No.9 and No. 16
terminals of SRS unit connector B (18P). There
should be 0-1.0 S2.
SRS UNIT CONNECTOR B {18PI
PNK/BLU
t-
l-u5l niFf;l \
230
10t1t5
T
GRY/RED
Wire side ol lemale terminals
ls the resistance as specified?
YES-Faulty front passenger's side impact sensor
or SRS unit; replace the front passenger's side
impact sensor (see page 23-125). lf the problem is
still present, replace the SRS unit (see page 23-122).
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NO-Open in the floor wire harness; replace the
floor wire harness. !
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DTC 14-4: Faulty Power Supply to the Front
Passenger's Side lmpact Sensor
1. Erase the DTC memory (see page 23-26).
2. Turn the ignition switch ON (ll), and check that the
SRS indicator comes on for about 6 seconds and
then goes off.
Does the SRS indicator stay on?
YES-Go to step 3.
NO-lntermittent failure, system is OK at this time.
Go to Troubleshooting Intermittent Failures (see
page 23-261.
3. Turn the ignition switch OFF. Disconnect the
battery negative cable, and wait for 3 minutes.
4. Disconnectthe driver's side airbag and front
passenger's side airbag 2P connectors (see step 4
on page 23-21). Also disconnect both seat belt
buckle tensioner 4P connectors (see step 6 on page
23-22t.
5. Disconnect the floor wire harness 2P connector {A}from the front passenger's side impact sensor.
Disconnecl SRS unit connector B (18P) from the
SRS unit (see step 7 on page 23-22i.
(cont'd)
"-;s.\
/ \--) frl l 1
- F.,=
j
23-95

sRs
DTG Troubleshooting (cont'd)
7. Check resistance between the No. 9 terminal of
SRS unit connector B (18P) and body ground. There
should be an ooen circuit, or at least 1 N4 Q.
SRS UNIT CONNECTOR B {18PI
Wire side of female terminals
ls the tesistance as specilied?
YES Go to step 8.
NO-Short to ground in the floor wire harness;
replace the floor wire harness.l
Check resistance between the No.9 and No. 16
terminals of SRS unit connector B (18P). There
should be an open circuit, or at least 1 M O .
SRS UNIT CONNECTOR B (18P)
PNK/BLU
_-r'18 sl /itltlis-l \
236
10tl
GRY/RED
Wire side ot female terminals
ls the resistance as specified?
YES-Faulty front passenger's side impact sensor
or SRS unit; replace the front passenger's side
impact sensor {see page 23-125). lf the problem is
still present, replace the SRS unit (see page 23-122).
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NO Short in the floor wire harness; replace the
floor wire harness.l
PNK/BLU
23-96
7. Turn the ignition switch ON (ll).
DTC 15-1: Faulty OPDS Unit
NOTE:. An incorrect OPDS unit can cause DTC 15-1.. A new (uninitialized) OPDS unit installed with a faulty
OPDS sensor can cause DTC 15-1.. lf you install a new OPDS unit and a new SRS unit at
the same time, initialize the OPDS manually (see
page 23-27), do not use the Honda PGM Tester.
1. Make sure nothing is on the front passenger's seat.
2. Initialize the OPDS unit (see page 23-27).
3. Erase the DTC memory (see page 23-26]'.
4. Read the DTC.
Is DTC 15-1 indicated?
YES Go to step 5.
NO Intermittent failure, system is OK at this time.
Go to Troubleshooting Intermittent Failures (see
page 23-26).
Check the No. 9 (10A) fuse in the under-dash fuse/
relay Dox,
ls the tuse OK?
YES Go to step 6.
NO Go to step 9.
Disconnect OPDS unit harness 8P connector (A)
from the OPDS unit (A) (see page 23-124).

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25. Check for voltage between the No. 3 terminal of
SRS unit connector B (18P) and body ground. There
should be 0.5 V or less.
SRS UNIT CONNECTOR B (18P)
Wire side of temale terminals
ls the voltage as specilied?
YES Go to step 26.
NO Short to power in the floor wire harness or in
the OPDS unit harness; replace the faulty
harness.l
Replace the OPDS unit (see page 23-'124), then
initialize the system (see page 23-27).
Erase the DTC memory, then check for DTC 15-1.
ls DTC 15-l indicated?
YES Replace the SRS unit (see page 23-122).1
NO The system is OK.l
26.
27.
PNK
DTC 15-2: Faulty Side Airbag Cutoff Indicator
Circuit
1. Make sure nothing is on the front passenger's seat.
2. Erase the DTC memory (see page 23-26]-.
3. Turn the ignition switch ON (ll),andcheckthatthe
SRS indicator comes on for about 6 seconds and
then goes off.
Does the SRS indicator stay on?
YES-Turn the ignition switch OFF, and go to step
NO Intermittent failure, system is OK at this time.
Go to Troubleshooting Intermittent Failures (see
page 23-26).
NOTE:This DTC may have been caused by turning
the ignition switch ON (ll)with the gauge assembly
disconnected.
Turn the ignition switch ON (ll), and checkthatthe
side airbag cutoff indicator comes on.
Does the side airbag cutoft indicator come on?
YES Go to step 5.
NO Go to step 6.
Make sure the side airbag cutoff indicator goes off
after 5 seconds.
Does the side airbag cutoff indicator go otf after 5
seconds?
YES Faulty OPDS unit or SRS uniu replace the
OPDS unit (see page 23-1241. lf the problem is still
present, replace the SRS unit (see page 23-122).)
NO Go to step 32.
Turn the ignition switch OFF.
{cont'd)
23-99

sRs
DTG Troubleshooting (cont'dl
37. Check resistance between the No. 15 terminal of
gauge assembly connector A (22P) and body
ground. There should be an open circuit, or at least
1M0.
GAUGE ASSEMBLY CONNECTOR A I22PI
ls the resistance as specified?
YES-Short to ground in the side airbag cutoff
indicator circuit; replace the gauge assembly.l
NO Short to ground in the dashboard wire
harness A, floor wire harness, or OPDS unit
harness; replace the faulty harness.l
Wire side of female terminals
23-104
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DTC 15-3: Faulty OPDS Sensor
1. Erase the DTC memory {see page 23-261.
2. Turn the ignition switch ON (ll), and check that the
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).
NOTE: Aftermarket devices (fluorescent lights,
laptop computers, etc.) used near the front
passenger's seat-back can interfere with the seat-
back sensors and cause a false DTC 15-3. lf one of
these devices was used, erase the DTC, operate the
device near the seat-back, and recheck for DTCs. lf
DTC 15-3 is reset, erase it, and do not use the
device near the seat-back.
3.
4.
Check the connection at the OPDS sensor harness
connector and the OPDS unit connector.
Are the connections OK?
YES-Go to step 4.
NO Reconnect the OPDS sensor harness
connector, and clear the DTC.I
Replace the OPDS sensor/seat-back foam (see page
20-141, and initialize the OPDS (see page 23-27).
Erase the DTC memory, then check for DTC 15-3.
ls DTC 15-3 indicated?
YES Replace the OPDS unit (see page 23-1241.a
NO The system is OK.l
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The SRS lndicator Stays On When ln "SCS"
Menu Method
NOTE:. lf you cannot retrieve DTCSwith the PGM Tester
using the SRS menu method. retrieve the flash codeswith the Tester in SCS mode {see page 23-24|,.. A new SRS unit must sense the entire system is OK
before completing its initial self-test. The most
common cause of an incomplete self-test is the
failure to replace all deployed parts after a collision,
in particular, seat belt tensioners and seat belt buckletenstoners.. An incomplete self-test prevents the PGM Tester fromretrieving DTCS, although flash codes are available in
the Tester's SCS mode.
1 . Erase the DTC memory using the MES connector(see page 23-26).
Does the SRS indicator go off while you are
erasing the DTC memory?
YES-Go to step 42.
NO Go to step 2.
Check the No. '13 { 10A) fuse in the under-dash
fuse/relay box.
lsthe f use OK?
YES--Go to step 19.
NO Go to step 3.
Replacethe No. 13 (10A) fuse.
Turn the ignition switch ON (ll), and wait for 30
seconds. Then turn the ignition switch OFF.
Check rhe No. 13 (10A) fuse.
ls the f use OK?
YES The system is OK at this time.I
NO Go to step 6.
3.
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6. Replace the No. 13 (10A) fuse.
7. Turn the ignition switch OFF. Disconnect the
battery negative cable, and wait for 3 minutes.
8. Disconnect the driver's airbag 4P connector (see
step 2 on page 23-21).
9. Disconnect the front passenger's airbag 4P
connector (see step 3 on page 23,21).
10. Disconnect both seat belt tensioner 2P connectors(see step 5 on page 23-221.
'11. DisconnectSRS unitconnectorA{18P)fromthe
SRS unit (see step 7 on page 23-22],.
'12. Reconnect the battery negative cable.
13. Turn the ignition switch ON (ll), and wait for 30
seconds. Then turn the ignition switch OFF.
14. Checkthe No. 13 ('10A) fuse.
ls the f use OK?
YES-Short to ground in the SRS unit; replace the
SRS unit (see page 23-122).a
NO Go to step 15.
15. Replace the No. 13 (10A) fuse.
{cont'd)
23-107

sRs
from the under-dash fuse/relav bor.
11.
18.
SRS Indicator Circuit Troubleshooting (cont'd)
'16. Disconnect dashboard wire harness B connector S
Turn the ignition switch ON {ll), and wait for 30
seconds. Then turn the ignition switch OFF,
Check the No. 13 (10A) fuse.
ls the f use OK?
YES Short to ground in dashboard wire harness
B; replace dashboard wire harness B.I
NO-Short to ground in the under-dash fuse/relay
box; replace the under-dash fuse/relay box.l
Turn the ignition switch OFF. Disconnect the
battery negative cable, and wait for 3 minutes.
Disconnect the driver's airbag 4P connector (see
step 2 on page 23-2'l).
Disconnect the front passenger's airbag 4P
connector (see step 3 on page 23-21).
Disconnect both seat belt tensioner 2P connectors
(see step 5 on page 23-22).
Disconnect SRS unit connector A (18P) from the
SRS unit (see step 7 on page 23-22).
19.
20.
21.
22.
23-108
24.Beconnect the battery negative cable.
Connect a voltmeter between the No. 3 terminal of
SRS unit connector A (18P) and body ground. Turn
the ignition switch ON (ll), and measure the voltage.
There should be baftery voltage.
SRS UNIT CONNECTOR A (18PI
Wire side of female terminals
ls there battery voltage?
YES Go to step 29.
NO Go to step 26.
Turn the ignition switch OFF.
Disconnect dashboard wire harness B connector S
26.
27.
PNK
from the under-dash fuse/relav box.

sRs
Component Replacement/lnspection After Deployment
NOTE: Before doing any SRS repairs. use the PGM
Tester SRS menu method to check for DTCS; refer to the
DTC Troubleshooting Index for the less obvious
deployed parts (seat beit tensioners, front sensors, side
airbag sensors, etc.)
After a collision where the seat belt tensioners
deployed, replace these items:' Seat belt tensioners. Seat belt buckle tensioners. SRS unit. Front impact sensors
After a collision where the front airbag(s) deployed.
replace these items:. SRS unit. Deployed airbag(s). Seat belt tensioners. Seat belt buckle tensioners. Front impact sensors
After a collision where the side airbag{s) deployed,
replace these items:. SRS unit. Deployed side airbag(s). Side impact senso(s)for the side(s) that deployed
During the repair process, inspect these areas:
. lnspect allthe SRS wire harnesses. Replace, don't
repair, any damaged harnesses.. Inspectthecable reelfor heatdamage. lf there is any
damage, replace the cable reel.
Afterthe vehicle is completely repaired, turn the
ignition switch ON (ll). lf the SRS indicator comes on for
about 6 seconds and then goes off, the SRS airbag
system is OK. lf the indicator does not function properly,
use the PGM Tester SRS Menu Method to read the DTC
(see page 23-23). lf this doesn't retrieve any codes, use
the Tester's SCS menu method (see page 23-24). lf you
still cannot retrieve a code, go to SRS Indicator Circuit
Troubleshooting.
23-112
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