under-dash HONDA CIVIC 2003 7.G Repair Manual

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

sRs
DTC Troubleshooting (cont'd)
7. Check the No. 10 (7.5A)fuse in the under-dash
fuse/relay box.
ls the f use OK?
YES Go to step 8.
NO Replace the fuse, then turn the ignition switch
ON (ll). lf the fuse blows again, check for a short in
the No. 10 {7.5A) fuse circuit (ECM wire harness.
floor harness, or OPDS harness).1
8. Disconnect the OPDS unit harness 8P connector (A)
from the OPDS unit (see page 23-124).
Turn the ignition switch ON (ll).
Check for voltage between the No. 3 terminal of the
OPDS unit harness 8P connector and body ground.
There should be battery voltage.
OPDS UNtT HARNESS 8P CONNECTOR
Wire side of female terminals
ls there battety voltage?
YES Go to step 11.
NO Go to step 23.
9.
10.
23-100
11.
12.
14.
Turn the ignltion switch OFF.
Disconnect the dashboard wire harness 17P
connector K from the under-dash fuse/relay box,
Turn the ignition switch ON (ll).
Check for voltage between the No. 3 terminal of the
OPDS unit harness 8P connector and body ground.
There should be 0.5 V or less.
OPDS UNIT HABNESS 8P CONNECTOR
Wire side of lemale terminals
ls the voltage as specitied?
YES-Faulty OPDS unit; replace the OPDS unit (see
page 23-124) .a
NO-Go to step 15.

sRs
6.
SRS Indicator Circuit Troubleshooting (cont'dl
7.
Disconnect SRS unit connector C (8P) from the SRS
unit {see step 7 on page 23-22).
Disconnect gauge assembly connector A (22P).
Connect a voltmeter between the No, l4terminal of
gauge assembly connector A (22P) and body
ground. Turn the ignition switch ON (ll), and
measure voltage. There should be 0.5 V or less.
GAUGE ASSEMBLY CONNECTOR A {22P)
Wire side of female terminals
ls the voltage as specitied?
YES-Faulty SRS unit; replace the SRS unit (see
page 23-'l22l.a
NO-Short to power in the PNK wire of dashboard
wire harness A or in the floor wire harness; replace
the faulty harness.l
L Turn the ignition switch OFF. Check the No. 10
{7.5A)fuse in the under-dash fuse/relay box.
ls the tuse blown?
YES-Go to step 10.
NO Go to step 9.
23-106
J
9. Connect a voltmeter between the No.2 terminal of
gauge assembly connector B (22P) and body
ground. Turn the ignition switch ON (ll), and
measure the voltage. There should be battery
voltaqe.
GAUGE ASSEMBLY CONNECTOR B (22P}
YEL
12345X68910
ll12,/ ,/,/x11o2122
Wire side of female terminals
ls therc battery voltage?
YES Faulty SRS indicator circuit in the gauge
assembly or poor contact at gauge assembly
connector B (22P) and the gauge assembly; if the
connection is OK, replace the gauge assembly.l
NO Open in the under-dash fuse/relay box No. 10
(7.5A) fuse circuit, or open in the YEL wire of
dashboard wire harness A. lf the under-dash fuse/
relay box is OK, replace lhe faulty harness.l
Replace the No. 10 (7.5A) fuse, then check to see if
the indicators comes on.
Do the indicators come on?
YES The system is OK at thls time.l
NO Repair the short to ground in the under-dash
fuse/relay box No. 10 (7.5A)fuse circuit.l
10.

JI
I
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.
I
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.

I
28. Check resistance between the No. 3 terminal of
SRS unit connector A (18P) and the No. 2 terminal
of dashboard wire harness B connector S. There
should be 0 1.0 0.
DASHBOARD WIRE HARNESS B CONNECTOR S
Wire side offemale term
l2
rna lsPNK
a,
PNK T SRS uNrr
l23578I
101112l314151611l8
CONNECTOR A I18P)
I
Wire side of female terminals
ls the rcsistance as specified?
YES-Open in the under-dash fuse/relay box orpoor contact at dashboard wire harness B
connectors; check the connection. lf the connection
is OK, replace the under-dash fuse/relay box.l
NO-Open in dashboard wire harness B; replace
dashboard wire harness B.I
Turn the ignition switch OFF.
Disconnect SRS unit connector C {8P) from the SRS
unit (see step 7 on page 23-22],.
29.
30.
I
SRS UNIT CONNECTOR C I8P}
31. Connect the No. 3 terminal ofSRS unitconnectorA(18P) and the No. 5 terminal of SRS unit connector
C (8P)with a jumper wire.
PNK
JUMPERWIRE
PNK
Wire side of female terminals
SRS UNIT CONNECTOR A I18P)
Wire side of temale terminals
32. Turn the ignition switch ON (llf .
33. Check the SRS indicator.
Did the SRS indicator go off?
YES Faulty SRS unit; replace the SRS unit (see
page 23-122l.a
NO-Go to step 34.
34. Turn the ignition switch OFF.
35. Disconnect the jumper wire between the No. 3
terminal of SRS unit connector A (18P) and the
No. 5 terminal of SRS unit connector C (8P).
36. Check the No. 13 (10A)fuse in the under,dash
fuse/relay box.
ls the f use OK?
YES Go to step 40.
NO Go to step 37.
37. Replace the No. 13 {10A)fuse.
(cont'd)
23-109

Service Manual lndex
)s
NOTE: Referto the lollowing listto look up A/C Pressure Switch CircuitDTCS, symptoms, fuses, connectors, wire Troubleshooting ......... ...-.-....-...-.-.-....-..21-32 Bharnesses, specifications, maintenanceschedules, and general serviceinlormation:
DTC Troubleshooting Indexes
A/C Signal CircuitTroubleshooting.........................-...... 11-'133 Back-up Light SwitchTest .......................................................... 13'3A/F lAir Fuel Ratiol SensorABS/TCS Components ........................ 19-34 Replacement ....................................... 1 1-113 Back-up Li9ht3EPS Components ................................. '17-22 Circuit DiagramFueland Emissions11-i A-Dillar Corner Trim
ABS Indicator Circuit
Heating/Ventilation ................................ 21-9 Replacement ...............-.....-..............-.... 20,96 Ball Joint BootssRS ........................................................ 23-28Replacement ......
... 19-52 Ball Joints
22-75
18 16
Remova1.............-.......... . ...........18-10Symptom Troubleshooting Indexes TroubleshootingABS/TCSComponents........................ 19 35Cruise Control System ..........................4 38 ABS Modulator-contml UnitEPS Components ................................. 17-23 Bemoval/lnstallation ............................ 19-57 BettervFan Controls10,12
Accessory Powor Socket Front
Blowor Pow€r Transistor
.......22 50
Blower UnitRemoval/lnstallation ............................ 21-39
Fuel and Em issions .............................. 11-10 ABS/TCS ComoonentsHeating/Ventilation..............................21 10 Component Location Index ................. 19-30 Beverage Holder
SRS ........................................................ 23'30 CircuitDiaqram.......................... 19'42Blower MotorReplacement .....21 41
21-38
Power 0istribution ...............................22-46 TesVReplacement .............................. 22'149Under-dash Fuse/Relay Box ............... 22 45Under-hood Fuse/Belay Box ...............22 44 Accessory Power Sockets
Fuse/Relay lndexes
(to harness)
Connector and Wire Harness lndexesComponent Connectors
Circuit Oiagram .................................. 22-149
Air Cleaner......2214 Rep1acemen1.....................................11-162
Air MixControl MotorMeintenence section .................... Section 3 Replacement ......................................... 21'34 Brake CelipersTest......................21-34 Overhaul19-14,23Gene.al lnlormation section........ Section 1
21.57
Airbag. Driver's
Ahernator FR Signal CircuitTroubleshooting .... .........-..........11 134
AntennaReplacement
Inspection ............................................. 19-24Rep|acement................. .................... 19-25
Bieke Meder Cylinder
Irake Discs
A
Replacement ....................................... 23 1 'l3 Inspection .................... ................... 19-13,22Repair ...........-...................................... 23 1 16Brake Fluid Level SwitchAirbag. Front Passenger's TestBeplacement....................................... 23-1 14AIC Brake LightsComponent Location fndex ...................21-3 Altemator CircuitDiagram....................................22-74Description.....................................-....21'1'l Beplacement ................ ........................... 4 29CircuitDiagram....................................21-14 Overhaul .................................................4-30 Brake Lines and Hoses
19.10
A/C CompressolReplacement .......-...-............................. 21 -41
A/C Compr€ssor ClulchRep1acement......................................... 19-15.........22-103 Inspection ............................................. 19-16Inspecton........Overhaul ..........
A/C CondenserReplacement,.,
21-442l-49 Audio Unit
Replacement
Brake PadsRemoval/lnstallation .. ........................22-100 Inspection/Rep1acement................ 19-11,20A/C Compressor Clutch CircuitTroubleshooting ................................... 21-30 Audio Unit Connector Brake Pedal22101 Adjustment..............19,6ArfC Comoressor Relief ValvcReplacement ..........-...-.......................... 21-51 Audio/Entertainment
A/C Compr$sor Thermal Protector Circuit DiagramReplacement............-............................ 21-51
Component Location In dex .................22-9A Test .......-.............. 22-84Breke Pedal Posilion Switch
Brake Pedal Position Switch Signal Clrcuit11-137
.....21 52
A/C Condenser Fan CircuitTroubleshooting ................... . . . . . .....21-28
)s
Troubleshooting
(cont'd)

)
Low Fuel lndicatorTest.....................11-158Moonroof Drain Channel SliderReplacement......................................... 20'44
Moonroof FrameRep1acement,,,,,,,,,,.,.,.,.,.,.,.,,,,,,............ 20 42
MoonroolGlassAdiustment ........................................... 20-37Rep1acement......................................... 20 37
Moonroot Limit SwitchAdjustment ........................................-.- 20 46Test ...................................................... 22 113
Moonrool MotorReplacement....-.................................... 2D-41
Oil Pressure SwitchTest ................-.-........-................................ 8-4Replacement.........-................................. 8-16
Oil Pump, EngineOverhau1 ................................................... 8-8
Oil, EngineReplacement...-................-.-...................... 8-5
OPDS UnitReplacement....................................... 23- 124
Outside Mirror HoldersBeplacement......................................... 20-15
Outside Power Mirror ActuatorsTest ...................................................... 22-117Bepf acement..-.................................... 22-1 14
Outside Power Mirror SwitchTest ..-................................................... 22-111
Outsid€ Power MirrorsReplacement............................ ... .. . . . 20-15Component Location lndex .............. 22- 114Circuit Diagram .................................. 22-115Test -..................................................... 22-116
Lower ArmsRemoval/1nsta11ation............................ 18 19
Lubrication SystemComponent Location Index..................... 8-3Test............................................................ 8 4
M
M/TAssemblyRemoval.......... 13-4 Test...................... 22-1 12lnstallation............. 13-8
.........21,35
Disassembly ......................................... 13-14Resassembly .. ... ................. 13-46
M/TChange Leverlnspection ............................................. 13-19Disassembly 8eassemb1y ................... 13-20
M/T Countershaft AssemblyInspection ....................................... 13 31, 33Disassemb1y ......................................... 13-32Resassemb|y ........................................ 13-34
M/T DifferentialComponentLocation Index................. 13-52Adiuslment ........................................... 13-56
M/T Maifthaft Assembly1nspection ... ................................... 13-23, 26Disassembly ......................................... 13 25Resassembly ........................................ 13 28Adjustment ........................................... 13-43
M/T Reverse Shift ForkInspection .................... ........................ l3 19
M/T Shift LevelReplacement......................................... 13-51
Mainshaft BearingsReplacement....,.................................... 13 41
MairtenancelSee section 3)
MILHow to Informatron ............................. 1 1.46
MIL CircuitTroubleshooting .......... .- . . . . ......... 11 97
MirrorsComponentLocation Index................. 20'14
Mode Control MotorReplacement
Moonrool SunshadeRep1acement....................... . . ............. 20 40
Moonroof SwitchTesVRep1acement .............................. 22- l 12
Mooniool Wind Def lectorReplacement.......................-................. 20-38
Moonroof/SunroofComponent Location Index ... 20-35, 22-108Test ........................................................ 20-48Cf rcuit Diagram .................................. 22- 109
MTFInspection/Rep1acement. .......... ........... 13-3
Muhiplex Control SystemComponentLocation lndex ..............22 168Circuit Diagram .................................. 22-1690escription ......................................... 22-17 1Troubleshooting ................................ 22-17 2
Muliiplex Control Unit, Under-dashInput TestEntry Light Control Sysiem ............. 22-92Keyless Entry/Security AlarmSystern .-....................................... 22-155MultiplexControl System .............22 115Wiper/Washer................................. 22'1 41
NoiseTest,,Reduction Condenser
Parking ErakeInspection Adjustment ........... .............. 19-7
Parking Brake CableRep1acement......................................... 19-26
Parking Erake Switch
P
l
Test ...................... 19-10
Test............................... . ...........2135
Moonroof Auto Stop SwitchosTest ...................................................... 22'113
Moon.oot Control Unillnput Test ............................................ 22-110
Moonroof Drein ChannelBeplacement ... . ....... ......................... 20 39
Oil Filte]Replacement............................................. 8-6
Oil Filter Feed PipeReplacement............... . ..-,...,.,,,,,,,,8-7
Oil PanRemoval .............,.,,,,,,,,,,,,.,.,,,.........-....... 7 1 1lnstallation .............................................. 7 -27
Passenger's TraVRemoval/lnstallation ............................ 20-65
PCV ValveBeplacement....................................... 1 1'169Test........................................... l1 169
Piston Rings8ep1acement................................-.-...-.- 7-21
PistonsReplacement...................-....................... 7-181nsta|1ation ...................................... ...1-23
Power R€layTest ...............-.-...................................... 22-51
Power Window Motor, Driver'stesl.....,,,, .,.,,,............
Power Window Motors, Passenger's
Power Window Switch, Masterlnput Test ..........-.........-....................... 22-126Tesr ....... . ............................................ 22 124Replacement....................................... 22-133
N
..............22 101
o
l' ,e
(cont'd)