Wire harness HONDA CIVIC 2003 7.G User Guide

11. At the wire harness side, check for continuity
between TP sensor 3P connector terminal No, 2
and body ground.
TP SENSOR 3P CONNECTOR
1 1213
'PS
REO
Wire side ot Iemale terminals
ls thete continuity?
YES-Repair short in the wire between the ECM
{A15) and the TP sensor.ll
NO-Go to step 12.
Connect ECM connector terminal A15 to body
ground with a jumper wire.
ECM CONNECTOR A 131P)
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1011112tc68 19 t2021
2312428129130
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Wire side oJ .female terminals
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12.
13. At the wire harness side, check for continuity
between TP sensor 3P connector terminal No. 2
and body ground.
TP SENSOR 3P CONNECTOR
(RED/BLX}
Wire side of female terminals
ls there continuity?
YES-Update the ECM if it does not have the latest
software, or substitute a known-good ECM, then
recheck (see page 11-6). lf the symptom/indication
goes away with a known-good ECM, replace the
original ECM.I
NO- Repair open in the wire between the ECM
(A15) and the TP sensor.l
14. lvleasure voltage between ECM connector
terminals 410 and A20.
ECM CONNECTOB A 131P}
vcc2(YEL/8LU)
Wire side of female terminals
ls there about 5 V?
YES Repair open in the wire betlveen the ECM
(A20) and the TP sensor.I
NO Update the ECM if it does nor have the latest
software, or substilute a known-good ECM, then
recheck (see page 1 1-6). lf the symplom indication
goes away with a known-good ECM. replace lhe
original ECM.I
123
TPS
11-61

PGM-FI System
(
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DTC Troubleshooting (cont'd)
DTC P0123: TP Sensor Circuit High Voltage
1. Turn the ignition switch oN (ll)
2. Check the throttle position with the scan tool.
ls there about 10% or 0.5 V when the throttle is
fully closed and about 90% or 4.5 V when the
throttle is f ully opened?
YES lntermittent failure. system is OK at this time.
Check for poor connections or loose terminals at
the TP sensor and at the ECM, I
NO Go to step 3.
3. Turn the ignition switch OFF.
4. Disconnect the TP sensor 3P connector.
5. Turn the ignition switch ON (ll).
6. At the wire harness side, measure voltage between
the TP sensor 3P connector terminals No. 1 and
No.3.
TP SENSOR 3P CONNECTOR
W;re side of female terminals
ls thete about 5 V?
YES-Replace the throttle body (the TP sensor is
not available separately). I
NO Go to step 7.
11-62
7. Measure voltage between ECM connector
terminals A10 and A20.
ECM CONNECTOR A 131PI
Wire side of female terminals
Is there about 5 V?
YES- Repair open in the wire between the ECM(A10) and the TP sensor. t
NO Update the ECM if it does not have the latest
soflware, or substitute a known-good ECM, then
recheck (see page 11-6). lf the symptom/indicationgoes away with a known-good ECM, replace the
original ECM.I

DTG P0325: Malfunction in Knock Sensor
Circu it
1. Reset the ECM (see page 11-4).
2. Start the engine. Hold the engine at 3,000 rpm with
no load (in neutral) until the radiator fan comes on,
then let it idle.
3. Hold the engine at 3,000-4,000 rpm for at least
60 seconds.
ls DTC P0325 indicated?
YES-Go to step 4.
NO Intermittent failure, system is OK at this time.
Check for poor connections or loose terminals at
the knock sensor and at the ECM.I
4. Turn the ignition switch OFF.
5. Disconnect the starter subharness 6P connector.
6. Check for continuity between ECM connector
terminal Ag and body ground.
ECM CONNECTOR A 131P)
Wire side of lemale terminals
ls there continuity?
YES-Repair short in the wire between the ECM(A9) and the starter subharness 6P connector.l
NO Go to step 7.
7. Connect staner subharness 6P connector terminal
No. 5 to body ground with a jumper wire.
8.
STARTER SUAHARNESS6P CONNECTOR
l1l213ll,/l5l6l._
KS IJUMPER|RED/BLU) IW|REI
Wire side of female terminals
Check for continuity between body ground and
ECM connector terminal A9.
9.
ECM CONNECTOR A {31PI
Wire side of female terminals
ls there continuity?
YES-Go to step 9.
NO Repair open in the wire between the ECM (A9)
and the starter subharness 6P connector.l
Check the starter subharness between the 6P
connector and the knock sensor for an open or
short. lf it's OK, substitute a known-good knock
sensor and recheck.
ls DTC P0325 indicated?
YES Update the ECM if it does not have the latest
software. or substitute a known-good ECM, then
recheck {see page '11-6). lf the sym ptomlindication
goes away with a known good ECM, replace the
original ECM.I
NO Replace the original knock sensor and/or
sta rte r subharness.l
11-77

ECM ldle Learn Procedure
The idle learn procedure must be done so the ECM can
learn the engine idle characteristics.
Do the idle learn procedure whenever you do any of
these actions:. Disconnect the battery.
Replace the ECM or disconnect its connector.
Reset the ECM.
NOTE: Erasing DTCS with the Honda PGM Tester
does not require you to do the idle learn procedure.
Remove the No.6 ECU {ECM) ( 15A) fuse from the
under-hood fuse/relay box.
Remove the No.19 baftery (80A) fuse from the under-
hood fuse/relay box.
Remove PGM-FI main relay 1.
Remove any of the wires from the under-hood fuse/
retay Dox.
Disconnect any of the connectors from the under
hood fuse/relay box.
Disconnect the connector between the engine
compartment wire harness and ECM wire harness.
Disconnect the G2 terminal from the transmission
ho u srng.
Disconnectthe G'l terminal from the body.
Disconnectthe G101 terminal from the cylinder head
cover.
Procedure:
To complete the idle learn procedure, do this:
1. Make sure all electrical items (Ay'C, audio, rear
defogger, l:ghts, etc.,) are off.
2. Start the engine, and hold it at 3,000 rpm with no
load {in neutral) until the radiator fan comes on, or
until the engine coolanttemperature reaches 194"F(90'c).
3. Let the engine idle for about 5 minutes with the
throttle fully closed.
NOTE: lf the radiator fan comes on, do not include its
running time in the 5 minutes.
11-139

Fuel Supply System
{Fuel Pressure Regulator
Replacement
Remove the fuel pump (see page 1 1-153).
Remove the fuel pressure regulator (A).
Installthe part in the reverse order of removal witha new o-ring (B).
1.
2.
11-152
Fuel Filter Replacement
The fuel filter should be replaced whenever the fuelpressure drops belowthe specified value {270 320 kpa,2.8 3.3 kgf lcm', 40 47 psi), after making sure that thefuel pump and the fuel pressure regulator are OK.
1. Remove the fuel pump(seepagell-'153).
2. Remove the
Install in the reverse order of removalwith a new
base gasket (B) and a new o-ring (C), then check
these items:
' When connecting the wire harness, make sure
the connection is secure and the terminal (D) is
firmly locked into place.. When installing the fuel gauge sending unit iE),make sure the connection is secure and the
connector is firmly locked into place. Be carefulnot to bend or twist it excessively.
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fuel filter (A).
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Fuel Pump/Fuel Gauge Sending Unit Replacement
SpecialTools Required
Fuel sender wrench 07XAA-001010A
1.Relieve the fuel pressure (see page 11-144).
Remove the fuel fill cap.
Remove the seat cushion (see page 20-80).
Remove the access panel (A)from the floor.
5.
7.
Disconnect the fuel pump 5P connector (B).
Disconnect the quick-connect fitting {C) from the
fuel tank unit.
Using the special tool, loosen the fuel tank unit
locknut (A).
93 N.m19.5 kgf.m,69 lbf.ftl
11-153
8. Remove the locknut (A) andthefuel tankunit.
9. Remove the stopper {O). Release the hook (P) and
remove the fuel filter (B), the fuel gauge sending
unit (C). the case (D), the wire harness (E), and the
fuel pressure regulator (F).
10. When connecting the fuel tank unit, make sure the
connection is secure and the suction filter (G) is
firmly connected to the f uel pump (H).
11. Install the fuel tank unit in the reverse order of
removal with a new base gasket (l)and new o-rings
(J), then check these items:
. When connecting the wire harness, make sure
the connection is secure and the connector (K) is
firmly locked into the place.
. When installing the f uel gauge sending unit,
make sure the connection is secure and the
connector is firmly locked into place. Be careful
not to bend or twist the connector excessively.. When installing the fueltank unit, align the marks
(L) on the fuel tank (M) and the fuel tank unit (Ni

10. Carefully remove the slave cylinder and clutch line
bracket so as not to bend the clutch line. Do not
operate the clutch pedal once the slave cylinder has
been removed,
Remove the engine wire harness cover (A) by
lifting up on the lock tab (B), then slide the harness
forward offthe aircleaner housing mounting
bracket {C).
11.
12. Attach the special tool to the threaded hole in the
cylinder head.
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Installthe engine hanger (A) and the engine support
hanger {B) to the vehicle, then attach the hook to the
sDeciai tool.
tJ.
14.
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Remove the two upper transmission mounting
bolts.
(cont'd)
13-5

Steering
Steering Wheel Installation
1. Before installing the steering wheel, make sure the
front wheels are aligned straight ahead, then center
the cable reel (A). Do this by first rotating the cable
reel clockwise until it stops. Then rotate it
counterclockwise about two and a half turns. The
arrow mark (B) on the cable reel label should point
straight up.
Position the two tabs (A) of the turn signal
canceling sleeve (B) as shown. Installthe steering
wheel onto the steering column shaft, making sure
the steerlng wheel hub (C) engages the pins (D) of
the cable reel and tabs of the canceling sleeve. Do
not tap on the steering wheel or steering column
shaft when installing the steering wheel.
17-8
3. Install the steering wheel nut (A), and tighten it to
the specified torgue.
A_B39 N.m (4.0 kgf m.29lbt ftl
Connect the cruise control set/resume switch
connector (B). fvlake sure the wire harness is routed
and fastened properly.
Install the driver's airbag, and confirm that the
system is operating properly {see page 23-113).
Check the horn, turn signal canceling and cruise
control switches for proper operation.
Reconnect the battery and do the following:. Do the engine control module (ECM) idle learn
procedure (see page 1l-139),. Power window control unit resetting procedure
\see page 22-1281.. Enter the anti-theft cord for the radio, then enter
the custmer's radio station presets.. Set the clock.
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Steering Column Removal and Installation
SRS components are located in this area. Review the SRS component locations (see page 23-13) and precautions andprocedures (see page 23-14) in the SRS section before performing repairs or service.
Removal
1, Record the radio station presets, and disconnect the battery.
2. Removethedriver'sairbagassembly(seepage23-113) and the steering wheel (see page 17-6).
3. Removethe driver's dashboard lowercover(see page 20-59) and undercover(see page 20-60).
4. Remove the column covers (A:
I x 1.25 mm16 N.m (1.6 kgf.m,12 lbl.fr)b
5.
6.
Disconnect the wire harness connectors from the combination switch assembly {B).
Remove the combination switch assembly from the steering column shaft by removing the screw (C) on the top of
the combination switch.
7. Disconnect the connectors from the ignition switch, and release the wire harness clips from the steering column.
8. Disconnect the steering joint (D), and remove it from the column shaft.
9. Remove the steering column {E) by removingthe attaching nuts and bolts.
(cont'd)
17-9

Steering
Steering Column Removal
lnstallation
1.
4.
Install the steering column, and make sure the
wires are not caught or pinched by any parts.
Insertthe upper end ofthe steering joint onto the
steering shaft {A) (line up the bolt hole (B) with the
flat portion (C) on the shaft).
8 x 1,25 mm28 N.m{2.9 kgf m,21 rbr.ft)
A
Slip the lower end of the steering joint onto the
pinion shaft {D) (line up the bolt hole with the
groove (E) around the shaft), and loosely lnstallthe
lower joint bolt. Be sure that the lower joint bolt is
securely in the groove in the pinion shaft.
Pull on the steering joint to make su re that the
steering joint is fully seated. Then installthe upper
joint bolt, and tighten it to the specified torque.
Tighten the lower joint bolt to the specified torque.
Finish the installation, and note these items:
. Make sure the wire harness is routed and
fastened properly.
. Make sure the connectors are properly connected.. Reinstallthe steering wheel (see page 17-8).
. Reconnect the battery.- Do the power window control unitreset
procedure {see page 22-128).- Enter the anti-theft code for the radio, then
enter the custmer's radio station presets.
- Set the clock.. Verify horn, turn signal switch, and cruise control
switch operation.. Check wheel alignment, if necessary (see page
18-4).. Do the engine control module (ECM) idle learn
procedu re {see page '11-139).
17-10
and Installation (cont'd){