2002 HONDA CIVIC ground

11.
12.
14.
Disconnect SRS unit connector B (18P) from the
SRS unit (see step 7 on page 23-22).
Disconnect the special tool from the floor wire
harness.
Reconnect the battery negative cable.
Turn the ignition switch ON (ll).
Check for voltage between the No. 1 lerminal of
SRS unit connector B {18P) and body ground, and
the No. 10 terminal and body ground. There should
be 0.5 V or less.
SRS UNIT CONNECTOR B I18PI
ls the voltage as specitied?
YES Faulty SRS unit; replace the SRS unit (see
page 23-1221 .f
NO Short to power in the floor wire harness;
replace the floor wire harness.l
I
fJ
4.
DTC 21-5: Short to Ground in Driver's Seat
Belt Buckle Tensioner
Special Tools Required. SRS inflator simulator 07SAZ-TB4011A. SRS simulator lead F 07XAZ-S230100
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 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).
Turn the ignition switch OFF. Disconnect the
battery negative cable, and wait for 3 minutes.
Disconnect the driver's seat belt buckle tensioner
4P connector {A) from the floor wire harness.
Connect the SRS inflator simulator (2 Q
connectors) and simulator lead F to the floor wire
n a rness.
Reconnect the battery negative cable.
Erase the DTC memory.
(cont'd)
6.
7.
23-57

sRs
9.
10.
DTC Troubleshooting (cont'dl
11.
Read the DTC.
ls DTC 21-5 indicated?
YES Go to step 9.
NO Short to ground in the driver's seat belt
buckle tensioner; replace the driver's seat belt
buckle.l
Turn the ignition switch OFF. Disconnect the
battery negative cable, and wait for 3 minutes.
Disconnect both side airbag 2P connectors (see
step 4 on page 23-21)and the front passenger's
seat belt buckle tensioner 4P connector (see step 6
on page 23-221.
Disconnect SRS unit connector B (18P) from the
SRS unit (see step 7 on page 23-22)
Disconnect the special tool from the floor wire
harness.
Check resistance between the No. '1 terminal of
SRS unit connector B (18P) and body ground, and
the No. 10 terminal and body ground. There should
be an open circuit, or at least 1 M Q.
12.
13.
SRS UNIT CONNECTOR B {18PI
ls the tesistance as specilied?
YES Faulty SRS uniu replace the SRS unit (see
page 23-122) .a
NO-Short to ground in the floor wire harness;
replace the floor wire harness.l
23-58
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'L
DTC 4-1: Open in Front Passenger's Seat Belt
renstoner
DTC 4-2: lncreased Resistance in Front
Passenger's Seat Belt Tensioner
Special Tools Required. SRS inflator simulator 07SM-T84011A. SRS simulator lead C 07TAZ-S25011A. SRS simulator lead F 07XAZ-S230100
Erase the DTC memory (see page 23-26).
Turn 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 {seepage 23-26).
Turn the ignition switch OFF. Disconnect the
battery negative cable, and wait for 3 minutes.
Disconnect the front passenger's seat belt
tensioner 2P connector (A) from the floor wire
harness.
07TAZ-525011A
5. Connect the SRS inflator simulator (2 0 connector)
and simulator lead C to the floor wire harness.

sRs
DTC Troubleshooting (cont'd)
6. Reconnect the battery negative cable.
7. Erase the DTC memory.
8. Read the DTC.
ls DTC 4-4 indicated?
YES Go to step 9.
NO-Short to power in the front passenger's seat
belt tensioner; replace the front passenger's seat
belt (see page 23-4).I
9. Turn the ignition switch OFF. Disconnect the
battery negative cable. and wait for 3 minutes.
'10. Disconnect floor wire harness 4P connector
C403 (A)from dashboard wire harness B.
07sAz-TB4o11A
Connect the SRS inflator simulator (2 0
connectors) and simulator lead F to dashboard wire
harness B.
Reconnect the battery negative cable.
Erase the DTC memory.
Read the DTC.
ls DTC 4-4 indicated?
YES-Go to step 15.
NO- Short to power in the floor wire harness;
replace the floor wire harness.l
11.
tJ.
14.
23-62
11.
15.
to.
18.
19.
20.
21.
Turn the ignition switch OFF. Disconnect the
battery negative cable, and wait for 3 minutes.
Disconnect the driver's airbag connector (see step
2 on page 23-211, tront passenger's airbag
connector (see step 3 on page 23-21), and drivefs
seat belt tensioner connector (see step 5 on page
23-22t.
Disconnect SRS unit connector A ('l8P) trom the
SRS unit (see step 7 on page 23-22).
Disconnect the special tool from dashboard wire
harness B.
Reconnect the battery negative cable.
Turn the ignition switch ON (ll).
Check for voltage between the No. 9 terminal of
SRS unit connector A (18P) and body ground, and
the No. 18 terminal and body ground. There should
be 0.5 V or less.
SRS UNIT CONNECTOR A (18PI
Wire side oJ Jemale terminals
Is the voltage as specified?
YES Faulty SRS unit; replace the SRS unit (see
page 23'1221.a
NO Shortto power in dashboard wire harness B;
replace dashboard wire harness B.l
t'J
J

I
I
DTC 4-5: Short to Ground in Front Passenger's
Seat Belt Tensioner
Special Tools Required. SRS inflator simulator 07SAZ-TB40'11A. SRS simulator lead C 07TAZ-S25011A. SRS simulator lead F 07XAZ-S230100
1. Erasethe DTC memory (see page 23-26]|.
2. Turn the ignition switch ON (ll), and checkthatthe
SRS indicator comes on for about 6 seconds andthen goes off.
Does the SRS indicator stay on?
YES-Go to srep 3.
NO-lntermittent failure, system is OK at this time.Go to Troubleshooting Intermittent Failures (see
page 23-26l,.
3. Turn the ignition switch OFF. Disconnect thebattery negative cable, and wait for 3 minutes.
4. Disconnect the front passenger's seat belttensioner 2P connector (A) from the floor wire
harness.
07TAZ-SZ501rA
Connect the SRS inflator simulator (2 e connector)and simulator lead C to the floor wire harness.
Reconnect the battery negative cable.
Erase the DTC memory.7.
8. Read the DTC.
ls DTC 4-5 indicated ?
YES-Go to step 9.
NO Short to ground in the front passenger's seat
belt tensioner; replace the front passenger's seat
belt (see page 23-4).I
9. Turn the ignition switch OFF. Disconnect the
battery negative cable, and wait for 3 minutes.
10. Disconnect the floor wire harness 4P connector
C403 (Alfrom dashboard wire harness B.
TB40 t 1A
Connect lhe SRS inflator simulator (2 econnectors) and simulator lead F to dashboard wire
harness B.
Reconnect the battery negative cable.
Erase the DTC memory.
Read the DTC.
ls DTC 4-5 ind icated?
YES Go to step 15.
NO-Short to ground in the floor wire harness;
replace the floor wire ha rness.l
Turn the ignition switch OFF. Disconnect the
battery negative cable, and wait for 3 minutes.
11.
12.
14.
(cont'd)
23-63

sRs
DTC Troubleshooting (cont'dl
16. Disconnect the driver's airbag connector (see step
2 on page 23-21), front passenger's airbag
connector (see step 3 on page 23-21). and driver's
seat belt tensioner connector (see step 5 on page
23-22).
17. Disconnect SRS unit connector A (18P)from the
SRS unit (see step 7 on page 23-221.
18. Disconnect the specialtool from dashboard wire
harness B.
19. Check resistance between the No.9 terminal of
SRS unit connector A (18P) and body ground, and
the No. l8 terminal and body ground. There should
be an open circuit. or at least 1 M Q.
SRS UNIT CONNECTOR A {18P)
wire side of lemale terminals
ls the rcsistance as specified?
YES Faulty SRS uniU replace the SRS unit (see
page 23-1221.1
NO-Short to ground in dashboard wire harness B;
replace dashboard wire harness B.I
23-64
DTC 22-1: Open or Increased Resistance in
Front Passenger's Seat Belt Buckle Tensioner
Special Tools Required. SRS inflator simulator 07SAZ-T84011A. SRS simulator lead F 07XAZ-S230100
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 otf.
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. Disconnect the
battery negative cable, and wait for 3 minutes.
4. Disconnectthe front passenger's seat belt buckle
tensioner 4P connector (A) from the floor wire
harness.
5. Connect the SRS inflator simulator (2 Q
connectors) and the simulator lead F to the floor
wtre harness.
\,

t
6. Reconnect the battery negative cable.
7. Erase the DTC memory.
8. Read the DTC.
ls DTC 22-4 indicated?
YES Go to step g.
NO-Short to power in the front passenger,s seatbelt buckle tensioner; replace the front passenger,s
seat belt buckle. !
9. Turn the ignition switch OFF. Disconnect the
battery negative cable, and wait for 3 minutes,
10.Disconnect both side airbag 2P connectors (see
step 4 on page 23-21)and the driver's seat beltbuckle tensioner 4P connector (see step 6 on page,1_r'>\
Disconnect SRS unit connector B (18P) from theSRS unit (see step 7 on page 23-221.
Disconnect the special tool from the floor wireharness.
Reconnect the battery negative cable.
Turn the ignition switch ON (ll).
Check for voltage between the No. 2 terminal ofSRS unit connector B {18P) and body ground, andthe No. 11 terminal and body ground. There shouldbe 0.5 V or Iess.
SRS UNIT CONNECTOR B I18P)
ls the voltage as specified?
YES-Faulty SRS unit; replace the SRS unit (see
page 23-1221 .l
NO Short to power in the floor wire harness;
replace the floor wire harness.l
11.
't2.
t5.
14.
23-67

sRs
DTC Troubleshooting (cont'dl
DTC 22-5: Short to Ground in Front
Passenger's Seat Belt Buckle Tensioner
Special Tools Required. SRS inflator simulator 07SAZ-T84011A. SRS simulator lead F 07XAZ-S230100
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 23-26).
3. Turn the ignition switch OFF. Disconnectthe
battery negative cable, and wait for 3 minutes.
4. Disconnectthe front passenger's seat belt buckle
tensioner 4P connector (A) from the floor wire
harness,
Connect the SRS inflator simulator (2 Q
connectors) and simulator lead F to the floor wire
narness.
Reconnect the battery negative cable.
Erase the DTC memory.
5.
6.
1.
23-68
!U
8. Read the DTC.
ls DTC 22-5 indicated?
YES-Go to step 9.
NO Short to ground in the front passenger's seat
belt buckle tensioner; replace the front passenger's
seat belt buckle.l
9. Turn the ignition switch OFF. Disconnectthe
battery negative cable, and wait for 3 minutes.
10. Disconnect both side airbag 2P connectors (see
step 4 on page 23-21) and the driver's seat belt
buckle tensioner 4P connector (see step 6 on page
23-22t.
11. Disconnect SRS unit connector B (18Plfrom the
SRS unit (see step 7 on page 23-221.
12. Disconnect the special tool from the floor wire
harness,
13. Check resistance between the No. 2 terminal of
SRS unit connector B (18P) and body ground, and
the No, 11 terminal and body ground. There should
be an open circuit, or at least 1 M Q.
SRS UNIT CONNECTOR g {18PI
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
bU
Wire side of female terminals

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.