2003 HONDA CIVIC connector

I
DTC 9-3: Fau lty Driver's Seat Belt Buckle
Switch
1. Erase the DTC memory (see page 23 26).
2. Turn the ignition switch ON (ll), then buckle and
unbuckle the driver's seat belt several times.
3. Read the DTC.
ls DTC 9-3 indicated?
YES Go to step 4.
NO Intermittent failure, system is OK at this time.
Go to Troubleshooting Intermittent Failures (see
page 23-261.
Turn the ignition switch OFF.
Disconnect the driver's seat belt buckle switch 3P
connector (A) from the floor wire harness.
4.
5.
t
I
6. Buckle the driver's seat belt.
Check resistance between the No. 1 and No.3
terminals ofthe driver's seat belt buckle switch 3P
conneclor. There should be 0 1 (J.
Check resistance between the No. 1 and No.2
terminals of the same connector. There should be
an open circuit, or at least 1 M Q .
DRIVER'S SEAT BELT BUCKLE SWITCH3P CONNECTOR
BLU/RED
Terminal side of male terminals
Terminal side of male terminals
Ate the resistance readings as specif ied?
YES - Go to step 7.
NO Replace the driver's seat belt buckle assembly,
then clear the DTC.I
(cont'd)
23-71

sRs
DTC Troubleshooting (cont'dl
7, Unbuckle the driver's seat belt.
Check resistance between the No. 1 and No.2
terminals ofthe driver's seat belt buckle switch 3P
connector. There should be 0 1 Q.
Check resistance between the No. 1 and No. 3
terminals of the same connector. There should be
an open circuit, or at least 1 M Q
DRIVER'S SEAT BELTBUCKLE SWITCH 3P CONNECTOR
Terminal side of male terminals
BLU/RED
Terminal side oI male terminals
ls the rcsistance as specified?
YES Go to step 8.
NO-Replace the driver's seat belt buckle assembly,
then clear the DTC.I
23-72
\J
8. Check resistance between the No. 1 terminal ofthe
floor wire harness 3P connector and bodv oround.
There should be 0 '1 0.
FLOOR WIRE HARNESS 3P CONNECTOR
Wire side of female terminals
ls the resistance as specified?
YES Go to step 9.
NO Open in the floor wire harness or poor ground
connection at G551. lf G55'1 is OK, replace the floor
wrre harness.l
Disconnect the negative cable from the battery.
Disconnect SRS unit connector C (8P) from the SRS
unit {see step 7 on page 23-22).
9.
10.

I
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3
1 1. Check resistance between the No. 2 terminal of the
floor wire harness 3P connector and body ground.
There should be an open circuit. or at least 1 fvl Q ,
FLOOR WIRE HARNESS 3P CONNECTOR
Wire side ot temale terminals
ls the resistance as specified?
YES-Go to step 12.
NO Short to ground in the floor wire harness or
multiplex control unit. Replace the faulty harness or
part.I
Check resistance between the No. 3 terminal of the
floor wire harness 3P connector and body ground.
There should be an open circuit, or at least 1 M Q.
FLOOR WIRE HARNESS 3P CONNECTOR
LT GRN
Wire side of female terminals
ls the resistance as specified?
YES Go to step 13.
NO-Short to ground in the floor wire
replace the floor wire harness.I
12.
13. Check resistance between the No. 8 terminal of
SRS unit connector C (8P) and the No. 3 terminal of
the floor wire harness 3P connector. There should
be0 1Q.
FLOORWIRE HARNESS SRS UNITCONNECTORC I8P}3P CONNECTOB
Wire side of female terminals
ls the resistance as specitied?
YES Go to step 14.
NO Open in the floor wire harness; replace the
floor wire harness.l
Check resistance between the No. 4 terminal of
SRS unit connector C (8P) and the No. 2 terminal of
the floor wire harness 3P connector. There should
be0-1 0.
14.
FLOOR WIRE HARNESS3P CONNECTORSRS UNIT CONNECTOR C IsPI
Wire side of female terminals
ls the resistance as specified?
YES Replace the SRS unit (see page 23-122).1
NO Open in the floor wire harness or multiplex
control unit, or poor connection at the floor wire
harness, the under-dash fuse/relay box, and the
multiplex control unit. Check the connection at the
floor wire harness, the under-dash fuse/relay box,
and the multiplex control unit. lf the connection is
OK, replace the faulty harness or part.l
harness;
23-73

SRS
DTC Troubleshooting (cont'dl
DTC 9-4: Faulty Front Passenger's Seat Belt
Buckle Switch
1. Erase the DTC memory {see page 23-26).
2. Turn the ignition switch ON {ll), then buckle and
unbuckle the front passenger's seat belt several
times.
3. Read the DTC.
ls DTC 9-4 indicated?
YES-Go to step 4.
NO Intermittent failure, system is OK at this time.
Go to Troubleshooting Intermiftent Failures {seepage 23-26)'.
4. Turn the ignition switch OFF.
5. Disconnect the front passenger's seat belt buckle
switch 3P connector (A) from the floor wire harness.
23-74
J
6. Buckle the front passenger's seat belt.
Check resistance between the No. 1 and No.3
terminals of the front passenger's seat belt buckle
switch 3P connector. There should be 0- 1 Q.
Check resistance between the No. 1 and No.2
terminals of the same connector. There should be
an ooen circuit, or at least 1 M Q .
FRONT PASSENGER'S SEAT BELTBUCKLE SWITCH 3P CONNECTOR
BLU/RED
Terminal side of male terminals
Terminal side of male terminals
Is the rcsistance as specified?
YES-Go to step 7.
NO Replace the front passenger's seat belt buckle
assembly, then clear the DTC.I

7. Unbuckle the front passenger's seat belt.
Check resistance between the No. 1 and No. 2
terminals of the front passenger's seat belt buckle
switch 3P connector. There should be 0 1!).
Check resistance between the No. 1 and No. 3
terminals of the same connector. There should be
an oDen circuit, or at least 1 M Q
FRONT PASSENGER'S SEAT BELTBUCKLE SWITCH 3P CONNECTOR
Terminal side of male terminals
Terminal side of male terminals
ls the resistance as specilied?
YES Go to step 8.
NO-Replace the front passenger's seat belt buckle
assembly, then clear the DTC.I
9.
10.
8. Check resistance between the No. 1 terminal ofthe
floor wire harness 3P connector and body ground.
There should be 0 1Q.
FLOOR WIRE HARNESS 3P CONNECTOR
Wire side of female terminals
ls the tesistance as specified?
YES Go to step 9.
NO-Open in the floor wire harness or poor ground
connection at G551. lf G551 is OK, replace the floor
wire harness.I
Disconnect the negative cable from the battery,
Disconnect SRS unit connector C (8P) from the SRS
unit (see step 7 on page 23-22).
(cont'd)
23-75

sRs
DTC Troubleshooting (cont'dl
11. Check resistance between the No.2 terminal ofthe
floor wire harness 3P connector and body ground.
There should be an open circuit, or at least 1 M 0 .
FLOOR WIRE HARNESS 3P CONNECTOR
Wire side of female terminals
ls the resistance as specified?
YES-Go to step 12.
NO-Short to ground in the floor wire harness;
replace the floor wire harness.I
Check resistance between the No. 3 terminal of the
floor wire harness 3P connector and body ground.
There should be an open circuit, or at least 1 l\4 0 .
FLOOR WIRE HABNESS 3P CONNECTOR
Wire side of temale terminals
ls the resistance as specified?
YES-Go to step 13.
NO Short to ground in the floor wire harness;
replace the floor wire harness.I
23-76
\J
13. Check resistance between the No. 7 terminal of
SRS unit connector C (8P) and the No. 3 terminal of
the floor wire harness 3P connector.
There should be 0-1 Q.
FLOORWIRE HARNESS SRS UNITCONNECTOR C (8P)3P CONNECTOR
Wire side of female terminals
ls the tesistance as specified?
YES-Go to step 14.
NO Open in the floor wire harness; replace the
floor wire harness.I
Check resistance between the No, 3 terminal of
SRS unit connector C (8P) and the No. 2 terminal of
the floor wire harness 3P connectof
There should be 0 1Q.
LJ
14.
FLOOR WIRE HARNESS3P CONNECTORSRS UNIT CONNECTOR C ISPI
Wire side of female terminals
ls the resistance as specified?
YES Replace the SRS unit (see page 23-122).1
NO Open ln the floor wlre harness; replacethe
floor wire harness.l

DTC 9-6: Faulty Left Front lmpact Sensor
Special Tools Required. SRS inflator simulator 07SAZ-TB4011A. SRS simulator lead H 07YM-S3AA100
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 Intermiftent 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 connector A (18P)
and the SRS unit. between the engine
compartment wire harness 2P connector and the
left 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
9-6 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 dashboard wire harness B {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).
7.
9.
10.
8. Disconnect the engine compartment wire harness
2P connector {A) from the left front impact sensor.
Disconnect SRS unit connector A {18P) from the
SRS unit (see step 7 on page 23-22J.
Check resistance between the No. 10 and No. 11
terminals of SRS unit connector A (18P). There
should be an oDen circuit. or at least 1 M 0 .
SRS UNIT CONNECTOR A (18PI
Wire side of female terminals
ls the resistance as specitied?
YES Go to step 1 1.
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}
RED
11.
12.
2356789
10tl1Zt315161718
I
T
ILK
23-77

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)
12378I
101112l3t4151611t6
RED
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.
t5.
23-78
\."r1
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,