2003 HONDA CIVIC Workshop Manual

sRs
DTC Troubleshooting (cont'dl
DTC 12-5: Short to Ground in Front
Passenger's Side Airbag Inflator
SpecialTools Required. SRS inflator simulator 07SAZ-T84011A. SRS simulator lead E o7XAZ-S140200
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 Intermittent failure, system is OK at this time.
Go to Troubleshooting Intermittent Failures (see
page 23-261.
3. Turn the ignition switch OFF. Disconnectthe
battery negative cable, and wait for 3 minutes.
4. Disconnect the floor wire harness 2P connector (A)
from the front passenger's side airbag.
07xAz-s1A0200
5. Connect the SRS inflator simulator (2 Q connector)
and simulator lead E to the floor wire harness.
23-90
.t
6. Reconnectthe battery negative cable.
7. Erase the DTC memory.
8. Read the DTC.
ls DTC 12-5 indicated?
YES Go to step 9.
NO-Short to ground in the front passenger's side
airbag inflator; replace the front passenger's side
airbag (see page 23-1 15).1
9. Turn the ignition switch OFF. Disconnect the
battery negative cable, and wait for 3 minutes.
10, Disconnectthe driver's side airbag 2P connector
(see step 4 on page 23-211 and both seat belt buckle
lensioner 4P connectors (see step 6 onpage23-22).
11. Disconnect SRS unit connector B (18P)from the
SRS unit (see step 7 on page 23-22).
12. Check resistance between the No. 15 and No. 18
terminals of SRS unit connector B (18P) and
between the No. 16 and No. 18 terminals. Then
check resistance between the No. 18 terminal and
body ground. There should be an open circuit, or at
least 1 M Q.
{
SRS UNIT CONNECTOR B {18PI
23678
1011t6171E
LT GRN/REDdi 116\l9Y9
GRY/RED
o
Wire side of female terminals
WHT/GRN
ls the resistance as specified?
YES Faulty SRS unit; replace the SRS unit (see
page 23-1221.a
NO-Short to ground in the floor wire harness;
replace the floor wire harness.l
I

)
)
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
)
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).

t
5. Disconnect the floor wire harness 2P connector (A)
from the driver's side impact sensor.
Disconnect SRS unit connector B (18P) from the
SRS unit (see step 7 on page 23-22)
Check resistance between the No. 8 terminal of
SRS unit connector B (18P) and body ground. There
should be an open circuit, or at least 1 M Q .
1.
I
SRS UNIT CONNECTOR B {18PI
Wire side of female te.minals
ls the resistance as specitied?
YES-Go to step 8.
NO-Short to ground in the floor wire harness;
replace the floor wire harness.I
BRN/YEL
8. Check resistance between lhe No.8 and No. l5
terminals of SRS unil connector B (18P). There
should be an open circuit, or at least 1 M 0 .
SRS UNIT CONNECTOR B {18P'
BRN/YEL
I
flliT;l n23
10111tr6l1tf;l \
LT GRN/RED
Wire side oI female terminals
ls the resistance as specitied?
YES-Faulty driver's side impact sensor or SRS
unit; replace the driver's side impact sensor (see
page 23-1251.lf the problem is still present, replace
the SRS unit (see page23-1221.a
NO- Short in the floor wire harness; replace the
floor wire harness.I
23-93

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.

)
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).
I
NO-Open in the floor wire harness; replace the
floor wire harness. !
I
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).
I
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).

)
)
8. Check for voltage between the No. 4 terminal of
OPDS unit harness 8P connector and body ground.
There should be battery voltage.
OPDS UNIT HARNESS 8P CONNECTOR
Wire side of female terminals
ls there battery voltage?
YES-Go to step 16.
NO Open in the floor wire harness or OPDS unit
harness; replace the faulty harness.I
Replace the No.9 (10A)fuse in the under-dash
fuse/relay box.
Turn the ignition switch ON (ll) for 30 seconds, then
turn it off.
Check the No. 9 (10A)fuse.
ls the tuse OK?
YES lntermittent failure, system is OK at this time.
Go to Troubleshooting Intermiftent Failures (see
page 23-26).
NO Go to step 12.
Replace the No. 9 ('l0A) fuse.
9.
10.
11.
)
14.
to.
11.
13. Disconnect OPDS unit harness 8P connector (A)
from the OPDS unit.
Turn the ignition switch ON (ll) for 30 seconds, then
turn it off.
Check the No. 9 (10A) fuse.
ls the f use OK?
YES Short to ground in the OPDS unit; replace the
OPDS unit (see page 23-1241.1
NO-Short to ground in the No. 9 (10A) fuse circuit(floor harness, or OPDS harness); replace the
affected harness.I
Turn the ignition switch OFF.
Check resistance between the No.8 terminal of
OPDS unit harness 8P connector and body ground.
There should be 0 '1.0 Q .
OPDS UNIT HARNESS sPCONNECTOR
l4V-'l^l
TVjEl#BLK
@I
Wire side of female terminals
ls the resistance as specified?
YES Go to step 18.
NO Open in the floor wire harness or OPDS unit
harness, or poor ground (G551). lf G551 is OK,
replace the faulty harness.I
(cont'd)
23-97