2003 HONDA CIVIC wheel

Fuel and Emissions Systems
System Descriptions (cont'dl
ECM lnputs and Outputs at Connector E (31P}
L
u
1iMoFPR
2sr-{]zs3LG34SG3
6$1025HTC
1M RLY
8AFSHTCR
I
14FTP15ELD
16EPSLD
18ACC20Z/VBS21VSV
22BKSW23K-LINE24SEFMJ26NEP
21rMoCD
29scs30WEN31MIL
Wire side of female terminals
NOTE: Standard battery voltage is '12 V.
TerminalnumberWire colorferminal nameDescription Signal
GRNI/ELIMO FPR (IMMOBILIZERFLJEL PUMP RELAYIDrives PGM Fl main relay 20Vfor2 seconds after turning ignition switch ON{ll). then batterv voltaoe2WHT/REDSHO2S (SECONDARYHEATED OXYGEN SENSOR(SECONDARY HO2S),SENSOR 2r
Detects secondary HO2S{sensor 2) signalWith throttle Jully opened from idle with fullywarmed up engine: above 0.6VWith throttle quickly closed: below 0.4 V
3BRN/YELLG3 (LOGIC GROUND)cround forthe ECM/PCMcontrolcircuitLess than 1.0 V at all times
4PNKSG3 {SENSOR GBOUND)Sensor oroundLess than 1.0 V at all times5YEUELUVCC3 {SENSOR VOLTAGE)Provides sensor voltageWith ignition switch ON (ll): about 5 VWith ionition switch OFF: about 0 V6BLKATr'HTSO25HTC (SECONDARYHEATED OXYGEN SENSOR(SECONDARY H02S)HEATER CONTROL)
Drives secondary HO2SheaterWith ignition switch ON (ll): baftery voltageWilh fullv warmed up engine running: dul,controlled
1REDA/ELMRLY (PGM.FI MAINRELAY}Drives PGM-Flmain relay 1Power source forthe DTCWith ignition switch ON (ll): about 0 VWith ignition switch OFF: battery voltage
IORNAFSHTCR {AIR FUEL BATIO(Iy'F)SENSOR HEATERCONTROL RELAY)
Drives air fuel ratio sensorheater relayWith ignition swirch ON {ll): 0 V
IYEUBLKIGl (IGNITION SIGNAL)Detecrs ignition signalWith ignition switch ON (ll): battery voltageWith iqnition switch OFF: about 0 V't4LT GRNFIP lFUEL TANKPRESSURE (FTP) SENSOR)Detects FTP sensor signalWith ignition switch ON (ll) and fuel fill cap open:about 2.5 VGRN/REDELD (ELECTRICAL LOADDETECTOF)Detects ELD signalWith ignition swjtch ON itt):aOoutO.t V l-gV(deDendino on electrical load)LT GRN/8LKEPSLD (ELECIRICALPOWEB STEEBING LOADDETECT)
Detects Power steering loadsrgnalAt idle with steering wheel in straight aheadposition: about 0 VAt idle with steering wheelatfull lock: momentary
'18REDACC (Ay'C CLUTCH RELAY)Drives P,/C clutch relayWith compressor ON: about 0 VWith comoressor OFF: batterv voltaoe
11-22
\-

PGM-Fl System
6.
1.
DTC Troubleshooting (cont'dl
DTC P0500: VSS Circuit Malfunction
1. Test-drive the vehicle.
2. Check the vehicle speed with the scan tool.
ls the correct speed indicated?
YES-lntermiftent failure, system is OK at this time.
Check for poor connections or loose terminals at
the VSS and at the ECM.I
NO Go to step 3.
3. Turn the ignition switch OFF.
4. Block the rear wheels, and set the parking brake.
5. Raise the front ofthe vehicle, and make sure it is
securely supported,
Turn the ignition switch ON (ll).
Block the right front wheel, and slowly rotate the
left front wheel.
8. Measure voltage between ECM connector
terminals A18 and A24.
ECM CONNECTOR A {31P)
Wire side of female terminals
Does the voltage pulse between 0 V and 5 V or
between 0V and battery voltage?
YES-Update the ECM if it does not have the latest
software, or substitute a known-good ECM. then
recheck (see page 1 1-6). lf the symptom/indication
goes away with a known-good ECM, replace the
original ECN4.l
NO Go to step 9.
11-80
9. Turn the ignition switch OFF.
10. Disconnect ECM connector A (3'1P).
1 1. Turn the ignition switch ON {ll}.
12. Blockthe right front wheel. and slowly rotate the
left front wheel.
'!3. lMeasure voltage between ECM connector
terminals A18 and A24.
ECM CONNECTOR A I31PI
Wire side of female terminals
Does the voltage pulse between 0 V and 5 V ol
between 0V and battety voltage?
YES Update the ECM if it does not have the latest
software, or substitute a known-good ECM, then
recheck (see page 1 1-6). lf the symptom/indication
goes away with a known-good ECM, replace the
origlnal ECM.I
NO Check these items:
. A short or an open in the wire between the ECM
(A18) and the VSS.I. lf thewire is OK,testtheVSS (see page 22 71).1

15. Check for continuity between body ground and
ECIM connector terminal 813.
ECM CONNECTOR B I24P}
Wire side of female terminals
ls there continuity?
YES Repair short in the wire between the ECM
(813) and the alternator.l
NO Update the ECM if it does not have the latest
software, or substitute a known-good ECM, then
recheck lsee page 1 1-6). lf the symptom/indication
goes away with a known-good ECM, replace the
original ECM.I
Electrical Power Steering (EPSI
Signal Circuit Troubleshooting
Turn the ignition switch ON (ll).
l\4easure voltage between ECM connector
terminals 424 and E16.
1.
2.
3.
4.
5.
Wire side of female terminals
ls there battery voltage?
YES Go to step 6.
NO Go to step 3.
Start the engine.
Turn the steering wheel lo the full lock position.
l\4easure voltage between ECM connector
terminals A24 and E16.
ls there momentaty battery voltage?
YES The EPS signal is OK.t
NO Go to step 10.
6. Turn the ignition switch OFF.
7. Disconnect the EPS control unit 20P connector.
8. Turn the ignition switch ON (ll).
(cont'd)
11-135

Component Location Index
""*--/\,L_.Ei
/i
(,'.'
CLUTCH INTERLOCK SWITCHAdjustment, page 12-4
CLUTCH PEDALPOSTTTON SWITCHAdjustment, page'12-4
RETAINING CLIPReplace.
_,___-,-s\
O-RINGReplace.UTCH PEDALAdjustment, Page 12 4
CLUTCH MASTER CYLINDERReplacement, page l2-5
CLUTCH DISCBemoval, page 12-9Installation, page'12-12
PRESSURE PLATERemoval, page'12-9lnstallation, page 12-12
FLYWHEELInspection, page'12-1 1Replacement, page 12-1 1
SLAVE CYLINDERReplacement, page 12-7
RELEASE BEARINGBeplacement, page 12-13
\".rr"*"o*
CLUTCH HOSECLIP
12-3

Flywheel Inspection
1. Inspect the ring gear teeth for wear and damage.
2. Inspect the clutch disc mating surface on the
flywheel for wear, cracks, and burning.
3. Measure the flywheel (A) runout using a dial
indicator (B) through at least two full turns. Push
against the flywheel each time you turn it to take up
the cra nksh aft th rust washer clea rance. lf the
runout is more than the service limit, replace the
flywheel and recheck the runout. Resurfacing the
flywheel is not recommended.
Standard (New): 0.05 mm (0.002 in.) max.
Service Limit: 0.15 mm (0.006 in.)
Flywheel Replacement
1. Installthe special tool.
2.
3.
4.
Remove the flywheel mounting bolts in a crisscross
pattern in several steps, then remove the tlywheel.
Installthe flywheel on the crankshaft, and install
the mounting bolts fingertight.
Installthe specialtool, then torque the flywheel
mounting bolts in a crisscross pattern in several
sreps.
12 x 1.0 mm103 N.m(10,s kst.m. 76 lbf ftl
(cont'd)
12-11

28. Connect the transmission ground cable (A).
8 x 1.25 mm
B
22 N.m (2.2 kgf.m, 16lbf.ft)
[---.-.---e
e
6x1,0mm9.8 N.m{1.0 kgl m. 7 lbf ftl
29.
30.
8x125mm22Nm12.2 kgt m, 16 lbf ft)
lnstall the battery tray (B).
Installthe intake air duct (see step 36 on page 5-14).
Installthe air cleaner housing (see step 39 on page
5-15).
Installthe intake manifold cover (see step 41 on
page 5-15).
Install the battery. Connectthe positive (+) cable
first, then the negative (-)cable to the battery.
Reflllthe transmission fluid (see page 13-3).
Test-drive the vehicle.
Check the clutch operation.
Check the front wheel alignment (see page 18-4).
Enter the anti-theft code for the radio, then enter
the customer's radio station presets.
Do the engine control module (ECM) idle learn
procedure (see page 11-139).
32.
33.
34.
35.
36.
31.
38.
39.
13-13

Driveshaft Inspection
1. Check the inboard boot (A) andthe outboard boot(B) on the driveshaft (C) for cracks, damage, leaking
grease, and loose boot bands (D). lf any damage is
found, reDlace the boot and boot bands.
Turn the driveshaft by hand, and make sure the
splines (E) and joint are not excessively loose.
Make sure the driveshaft is not twisted or cracked;
if it is, replace it.
Driveshafts Removal
Special Tool Required
Balljoint remover, 28 mm 07MAC-S100200
1. Loosen the wheel nuts slightly
2. Raise the front of the vehicle, and support it with
safety stands in the proper locations (see page 1-8).
3. Remove the wheel nuts and front wheels.
4.Lift up the locking tab (A) on the spindle nut (B),
then remove the nut.
lf the !eft driveshaft or the intermediate shaft is to
be removed, drain the transmission fluid. Reinstall
the drain plug using a new washer (see page 13-3).
Hold the stabilizer balljoint pin (A) with a hex
wrench {B), and remove the flange nut (C).
Separate the front stabilizer link (D) from the lower
a rm.
(cont'd)
16-3

Driveline/Axle
Driveshafts Removal (cont'd)
7. Remove the lock pin {A)from the lower arm balljoint castle nut (B), and remove the nut.
NOTE:. To avoid damaging the balljoint, install a hex nut
on to the threads of the ball joint,
. Be careful not to damage the balljoint boot when
installing the remover.
07MAC-S100200
w^'e
Separate the ball joint from the lower arm (C) with
the special tool (see step 3 on page 18-19).
Be careful not to dislodge the lower ball joint from
the knuckle.
Pull the knuckle outward, and remove the
driveshaft outboard joint from the front wheel hub
using a plastic hammer.
9.
.."8
16-4
\
10. Left driveshaft: Pry the inboard joint (A)from the
differential case with a prybar. Right driveshaft:
Drive the inboard joint (A) off of the intermediate
shaft with a drift and hammer. Remove the
driveshaft as an assembly. Do not pull on the
driveshaft (B), because the inboard joint may come
apart. Draw the driveshaft straight out to avoid
damaging the oil seal.
Left driveshaft:
a
t
Right driveshaft: