Control HONDA CIVIC 2003 7.G User Guide

lgnition Timing Inspection
1.
4.
5.
Connect the Honda PGM Tester to the data link
connector (DTC), and check for DTC'S. lf a DTC is
present, diagnose and repair the cause before
inspecting the ignition timing.
Startthe engine. Hold the engine at 3,000 rpm with
no load (in Neutral) until the radiator fan comes on,
then let it idle.
Check the idle speed (see page 11-138).
Follow the tester's prompts in the "SCS" menu
{see the tester operator's manual),
Connect the timing light to the service loop.
o
6. Point the light toward the pointer (A) on the cam
chain case. Check the ignition timing under no load
conditions: headlights, blower fan. rear window
defogger, and air conditioner are not operaling. lf
the ignition timing differs from the specification,
and there are no engine control module {ECM)DTcs,
replace the ECM (see page 11-4)
lgnition Timing:
8"+2" BTDC {RED mark {B)) during idling in neutral
A
7. Turn the ignition switch OFF.
Disconnectthe Honda PGM Tester and thetiming
light.
4-17

Gharging System
Charging Circuit Troubleshooting
lf the charging system indicator does not come on or
does not go off, or the battery is dead or low, test these
items in the order listed below:
Battery (see page 22-50)
Charging system indicator
Alternator and regulator circuit
Alternator control system
Charging System Indicator Test
1. Turn the ignition switch ON {ll).
Does the chatging system indicator come on?
YES Go to step 2.
NO Go to step 3.
2. Start the engine.
Does the charging system indicator go off?
YES-Charging system indicator circuit is OK. Go
to the Alternator and Regulator circuit Test. t
NO-Go to step 3.
3. Turn the ignition switch OFF.
4. Troubleshoot the multiplex control system (see
page 22 172).
ls the multiplex control system OK?
YES Go to step 5.
NO Check the multiplex control system as
indicated by the diagnostic trouble code (DTC) (see
step 8 on page 22-172).1
5. Disconnect the engine wire harness 6P connector
from the starter sub harness 6P connector.
4-22
\"4
6. Measure the voltage at the No. 3 terminal of the
engine wire harness 6P connector with the ignition
switch ON { ll).
ENGINE WIRE HARNESS 6P CONNECTOR
IBLK/YEL}
Wire side of female terminals
ls there battery voltage?
YES-Go to step 7.
NO-Check for a blown No.4 {10A) fuse in the
under-dash fuse/relay box. lf the fuse is OK, repair
open in the wire between the alternator and the
under-dash fuse/relay box. I
Turn the ignition switch OFF.
Disconnect engine control module (ECM) connector
B (24P).
Check continuity between the ECM connector
terminal B'10 and engine wire harness 6P connector
terminal No. 6.
?
7.
8.
9.
ACGL {WHT/BLU)
ENGINE WIBEHARNESS6PL (WHT/BLUI
Wire side of femaletermina s
ls there continuity?
YES Go to step 10.
NO-Repair open in the wire between the
alternator and the ECN4.I
ECM CONNECTOB A (24P)

Gharging System
Charging Circuit Troubleshooting (cont'd)
6. 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.
7. Raise the engine speed to 2,000 rpm, and hold it
there.
8. Turn the headlights (high beam) on, and measure
voltage at the under-hood fuse/relay box terminal.
ls the voltage between 13.9 and 15.1 v?
YES-Go to step 9.
NO Repair or replace the alternator components
(see page 4-30).1
9. Read the amperage at '13.5 V.
NOTE: Adjust the voltage by turning the blower
motor, rear window defogger, brake lights. etc. ON.
ls the amperage 604 ot morc?
YES-Alternator/regulator operation is OK. I
NO Repair or replace the alternator components(see page 4-30).1
4-24
\,
Alternator Control System Test
NOTE: After troubleshooting, perform the engine
control module (ECM) idle learn procedure (see page
11-139).
1 . Check for proper operation of the electrical load
detector (ELD) by checking the malfunction
indicator lamp (MlL) (see page 1 l-3). lf a DTC is
present, diagnose and repair the cause before
continuing with this test.
2. Disconnect the engine wire harness 6P connector
from the starter sub harness 6P connector.
3. Start the engine, and turn the headlights (high
beam) ON,
4. Measure voltage between the engine wire harness
6P connector terminal No. 2 and the positive
terminal of lhe battery.
C {WHT/GRN)
ENGINE WIRE HARNESS 6P CONNECTOR
Wire side of female terminals
ls there 1 V or less?
YES Go to step 8.
NO-Go to step 5.
Turn the headlights and ignition switch OFF.
Disconnect ECM connector B (24P).
5.
6.
BATTERY

l\-Alternator Replacement
1. Make sure you have the anti-theft code for the radio,
then write down the frequencies for the radio'spreset buttons,
2. Disconnect the negative cable from the battery first,
then disconnect the positive cable.
3. Remove the front bumper (see page 20-85).
4. Remove the right side headlight (see page 22-79).
5. Remove the reserve tank from the bracket.
6. Remove the drive belt (see page 4-26).
7. Remove the three bolts securing the alternator.
8 x 1.25 mm22 N.n 12.2 kgl.m,
Disconnect the alternator connector (A) and BLK
wire (B) from the alternator.
8 N.m10.8 kgf.m,6lbf.ft)
\
6
'I 1.
9.
10.
13.
14.
Remove the alternator.
Installthe alternator and drive belt in the reverse
order of removal.
Connect the positive cable and negative cable to
the battery.
Enter the anti-theft code for the radio, then enter
the customer's radio station presets.
Set the clock.
Perform the engine control module {ECM) idle learn
procedure (see page 11-139).
tt.
4-29

Gruise Control
Component Location Index
CLUTCH PEDAL POSITIONswtTcHTest, page 4-45Clutch Pedal Adjustment,page 12-4
t.- _,- _
CRUISE CONTROLACTUATORTest, page 4'43Replacement, page 4-44
CRUISE CONTROL UNITlnput Test, page 4-40
BRAKE PEDAL POSITION SWITCHTest, page 22-84Pedal Height Adjustment, page '19-6
CRUISE CONTROL INDICATOR(Built into gaug6 assembly)
ACTUATOR CABLEAdjustment, page 4-45
-ll
4-36
\-a

Cruise Control
Symptom Troubleshooting Index
NOTE:' The numbers in the table showthetroubleshooting sequence.. Before troubleshooting.- check the No, 10 (7.5A) and No. 4 (10A) fuses in the under-dash fuse/relay box. and the No. 7 (15A) fuse in theunder-hood fuse/relay box,- check that the horn sounds.- check the tachometer to see if it works properly.- check the speedometer lo see if it works properly.
SymptomDiagnostic procedureAlso check forCruise control cannot be
set
1. Check main switch (see page 4-42)
2. Check SET/RESUME/CANCEL switch (see page 4-42)
3. Test brake pedal position switch (see page 22-84) and checkits adjustment {see page 19,6)
4. Test clutch pedal position switch (see page 4-45) and check
its adjustment (see page 12-41
5. Check cruise control unit {see page 4-40}
6. Check vehicle speed sensor (VSS) (see page 22-65)
. Poor ground:
G501. Open circuit,
loose or
disconnected
term inals:
LT GRN,
BLI(ORN.
GRY/RED, BLU.
LT BLU,
BLUAA/HTCruise control can be set
but indicator light does
not go on
1. Check cruise control indicator bulb in gauge assembly {seepage 22-631
2. Check cruise control unit (see page 4-40)
. Poor ground:
G501. Open circuit,
loose or
disconnected
termrnats:
YEL, BLUA/ELar, 'i.a c^aa.l ic
noticeably higher or
lower than what was set
1. Check vehicle speed sensor (VSS) {see page 22-65)
Check cruise control actuator {see page 4-43)
2. Check cruise control unit (see page 4-40)
Excessive overshooting
or undershooting when
trying to set speed
1. Check cruise control actuator (see page 4-43)
2. Check vehicle speed sensor (VSS) (see page 22-65)
Check cruise control unit (see page 4-40)
3.
Speed fluctuation on a
flat road with cruise
control set
1. Check vehicle speed sensor (VSS) (see page 22-65)
Check cruise control actuator (see page 4-43)
2. Check cruise control unit (see page 4-40)
Vehicle does not
decelerate or accelerate
accordingly when SET/
RESUME/CANCEL button
is pushed
1. Check SET/RESU ME/CANCEL switch (see page 4-42)2. Check cruise control unit {see page 4-40)
Open circuit, loose
or disconnected
terminals:
GRY/RED,
LT GRN/BLKSet speed does not
cancel (engine rpm stays
high) when clutch pedal
is pushed
1. Testclutch pedal position switch (see page 4-45) and checkits adjustment (see page 12-4)
2. Check cruise control unit (see page 4-40)
Short to ground in
the LT BLU wire
Set speed does not
cancel when brake pedal
is pushed
'1. Test brake pedal position switch (see page 22-84) and checkits adjustment (see page 19-6)
2. Check cruise control unit (see page 4-40)
Open circuit, loose
or disconnected
terminals:
WHT/BLK
4-38
g,

svmptomDiagnostic procedureAlso check for
Set speed does not
cancel when main switch
is oushed OFF
1. Check main switch (see page 4-42)
2. Check cruise control unit (see page 4-40)
Short to power in
the LT GRN wire.
Set speed does not
cancel when CANCEL
button is pushed
1. Check SET/RESU ME/CANCEL switch (see page 4-42)
2. Check cruise control unit (see page 4-40)
Open circuit, loose
or disconnected
terminals:
GRYiRED,
LT GRN/BLK
Set speed will not
resume when RESUME
button is pushed (with
main switch on, and set
speed temporarily
cancelled by pressing the
brake Dedal)
1. Check SET/RESU ME/CANCEL switch (see page 4-42)
2. Check cruise control unit {see page 4-40)
Open circuit, loose
or disconnected
terminals:
LT GRN/BLK
4-39

Cruise Gontrol
Cruise Control Unit Input Test
SRS components are located in this area. Reviewthe SRS component locations (see page 23-'13) and precautions andprocedures (see page 23-14) in the SRS section before performing repairs or service.
1. Disconnect the 14P connector from the control unit.
2. Inspect the connector and socket terminals to be sure they are all making good contact.
. lf the terminals are bent, loose, orcorroded, repairthem as necessary, and recheckthe system.. lf the terminals look OK, go to step 3.
Wire side offemale terminals
3. With the 14P connector disconnected, make these inDut tests.
CavityWireTest conditionTest: Desired resultPossiblecause ifresuh is not obtained
BRN/WHTConnect battery
power
Check the operation of the
magnetic clutch: Clutch
should click and output link
should be locked.
' Faulty actuator. Poor ground (G301)
. An open in the wire. Shon to ground (arcs when
Dower is connected)
2BLUlgnition switch ON(ll), main swltch ON
and brake pedal
pressed, then
reteaseo
Check for voltage to ground;
There should be 0 V with lhe
pedal pressed and battery
voltage with the pedal
released.
. Faulty brake pedal position
switch. An open in the wire. Open in cruise control main
swrtcn. Blown No. 4 (10 A)fuse in the
under/dash fuse/relav box
3BLKUnder all conditionsCheck for continuity to
grouno:
There should be continuitv
. Poor ground (G501)
. An open in the wire
BLIVORNlgnition switch ON
flr)
Check for voltage to ground:
There should be battery
vottaqe.
Blown No. 4 (10 A)fuse in the
under-dash f use/relay box
An oDen in the wire
5WHT/BLKBrake pedal pressed,
then released
Check for voltage to ground:
There should be battery
voltage with the pedal
pressed, and 0 V with thepedal released.
Blown No. 7 {15 A) fuse in the
under-hood fuse/relay box
Faulty brake pedal position
SWIICN
An oDen in the wire
4-40

CavityWireTest conditionTest: Desired resultPossible cause il result is not obtained
6GRYiREDSet button pushedCheck for voltage to ground:
There should be battery
voltage,
When testing terminal No.6,
there should be no voltage on
terminal No. 7.
Blown No.7 (15 A)fuse in the
under-hood fuse/relay box
Faulty horn relay
Faulty sevresume/cancel
swrtch
Faulty cable reel
An open in the wire
Shon to ground (horn sounds
when button is pressed)
7LT GRN/
BLK
Resume button
pusneo
Check for voltage to ground:
There should be battery
voltage.
When testing terminal No.7,
there should be no voltage on
terminal No. 6.
BRNConnect battery
power to the BRN
terminal and ground
to the BRNIVEL
termrnal
Check the operation of the
actuator motor: You should
be able to hear the motor.
. Faulty actuator. An open in the wire11BRNI/EL
10B LUIVE Llgnition switch ON
0r)
Attach to groundi
Cruise indicator light in the
gauge assembly should come
on.
Blown No. 10 (7.5 A) fuse in
the under-dash fuse/relay box
Blown cruise indicator bulfl
Faulty gauge assembly
An open in the wire
12BLU/VVHTlgnition switch ON
(ll) and main switch
ON; raise the front of
the vehicle, and
rotate one wheel
slowly while holding
the other wheel
Check for voltage between
thE BLU/VVHT (+) ANd BLK
( )terminals:
Thereshouldbe0 5Vor
more repeatedly.
Faulty VSS
An open in the wire
Short to ground
13LT GRNlgnition switch oN
{ll) and main switch
ON
Check for voltage to ground:
There should be battery
voltage.
Blown No. 4 (10 A)fuse in the
under-dash fuse/relay box
Faulty main switch
An oDen in the wire
14LT BLUClutch pedal
reteaseo
Check for continuity to
grouno:
There should be continuity.
NOTE:There should be no
continuity when the clutch
oedal is Dressed.
Faulty clutch pedal position
swtlcn
Poor ground (G501)
Incorrect clutch switch
adjustment
An open in the wire
lf any test indicates a problem, find and correct the cause, then recheck the system. lf all the input tests prove OK,
the cruise control unit may be faulty. Substitute a known-good cruise control unit and retest. lf the system works
properly, replace the cruise control unit.
4-41

Cruise Control
1.
Main Switch Test/Replacement
Remove the driver's dashboard lower cover (see
page 20-59).
Release the clips of the main switch and push the
main switch 1A) out of the panel, then disconnect
the 5P connector (B) from the main switch.
Check for continuity between the terminals in each
switch position according to the table. lf the
continuity is not as specified, replace illumination
bulbs (C) or the switch.
\-------11v1
Position14
OFF(9@
ONo@o\Jo
4-42
r\--
Set/Resume/Cancel Switch Test/
Replacement
1. Remove the two screws. then remove the switch.
Check for continuity between the terminals in each
switch position according to the table.
. lfthere is continuity, and it matches the table, but
switch failure occurred on the cruise control unit
input test, check and repair the switch circult.. lf there is no continuity in one or both positions,
replace the switch.
Terminal
;"itl* '\2
sET (ONtCF--o
RESUME ION)o--o
CANCEL {ON}o