2003 HONDA CIVIC ect

Bulb Replacement
Headlight:
1. Disconnect the 3P connector (A) from the headlight.
Headlight {high/low): 60/55 W
f-rI-'-+lA- )/
Remove the rubber cover (B).
Pull the retaining spring (C) away from the bulb (D),
then remove the bulb.
Install a new bulb in the reverse order of removal.
Make sure the notches in the bulb align with the
tabs ln the headlight.
2.
Front Turn Signal Light:
Parking Light:
1. Remove the inner fender (see page 20-102).
2. Disconnectthe connectors (A) from the lights.
21W
5W
4.
Front turn signal light:
Parking light:
Turn the bulb sockets (B) 45'counterclockwise to
remove them from the headlight housing.
Installthe new bulb(s) in the reverse order of
removat.
22-81

Exterior Lights
1.
2.
Taillight Replacement
Remove the rear bumper (see page 20-86).
Open the tailgate, and disconnect the connectors(A) from the taillight (B).
Brako/Taillight; 2115W
Turn Signal Light: 21 W
Back-up Light: 21W
Remove the mounting nuts and bolts, then remove
the taillight.
Turn the bulb socket 45' counterclockwise to
remove the bulb socket.
When installing the taillight. check the gasket; if it is
distorted or stays compressed, replace it.
After installing the taillight. run water over the
taillight to make sure it does not leak.
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22-82
High Mount Brake Light
Replacement
1. Open the hatch.
2. Remove the plastic trim.
3. Disconnectthe 2P connectors (A)from the high
mount brake light (B).
High Mounl Brake Light: 5 W x 5
Carefully remove the high mount brake light.
lnstall the light in the reverse order of removal.5.
'

License Plate Light Replacement
1.Remove the hatch lower trim panel (see page 20-
Pullthe license plale light assembly out. and
disconnect the 2P connector (A) from the light.
License Plate Light: 5Wx2
3.
4.
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Separate the lens (B) and housing (C), then remove
the bulb.
lnstallthe light in the reverse order of removal.
Side Marker Light Replacement
1. Carefully pry the light (A) outofthe rear bumper,
and disconnect the 2P connector (B) from the light.
Be careful not to damage the rear bumper.
Side Marker Light:5W
2.Remove the bulb socket (A) by turning it 45'
counterclockwise. then reolace the bulb.
22-83

Exterior Lights
Brake PedalPosition Switch Test
1. Disconnectthe 4P connector (A) from the brakepedal position switch {B).
Check for continuity between the No. 1 and No. 2
termtnals.
. There should be continuity when the brake pedal
rs presseo.
. There should be no continuity when the brake
pedal is released.
Check for continuity between the No. 3 and No. 4
terminals {with cruise control).
There should be no continuity when the brake
pedal is pressed.
There should be continuity when the brake pedal
is released.
lf necessary, adjust or replace the switch, or adjust
the pedal height (see page 19-6).
22-84
Side Turn Signal Light Replacement
NOTE: Be careful nol to damage the fender.
1. Push the retaining spring (A). and remove the side
turn signal light (B),
Side Turn Signal Light: 5 W
2. Disconnect the 2P connector {C) from the light.

Turn Signal/Hazard Relay Input Test
1. Removetheturn signal/hazard relay (A) from the under-dash fuse/relay box (B).
Inspect the relay and fuse/relay box socket terminals to be sure they are all making good contact
. lf the terminals are bent. loose, or corroded, repairthem as necessary, and recheckthe system.
. lf the terminals look OK, go to step 3.
Make these input tests at the fuse/relay box.
.lfanvtestindicatesaproblem,findandcorrectthecause,thenrecheckthesystem.
. lf all the inputtests prove OK,theturn signal/hazard relay must befaulty. Replace it
000i 0!1000
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CavitvTesl conditionTest: Desired resultPossible cause il result is not obtained
1Under all conditionsCheck for continuity to ground:
There should be continuiw.
. Poor ground (G201)
. An ooen in the wire
3lgnition switch ON ( ll)
Hazard warning switch
OFF
Check for voltage to ground:
There should be battery voltage.
' Blown No. 19 (7.5A) fuse in the
under-dash fuse/relay box. Faulty hazard warning switch. An ooen in the wire
Hazard warning switch
ON
lgnition switch OFF
Check for voltage to ground:
There should be battery voltage.
. Blown No. 5 {10A) fuse in the
under-hood fuse/relay box. Faulty hazard warning switch. An ooen in the wire
2lgnition switch ON ( ll)
and turn signal switch
in Right or Left position
Connect No. 2 terminalto No. 3
terminal:
Right or left turn signal lights
should come on.
. Poor ground (G201, G301, G501,
G502, G553). Faulty turn signal switch. An oDen in the wire
lgnition switch OFF
Hazard warning switch
ON
Connect No.2 terminal to No. 3
termrnal:
Hazard wa rning lights should
come on.
. Poor ground (G201, G301, G501,
G502, G553). Faulty hazard warning switch. An open in lhe wire
22-87

Turn Signal/Hazard Flasher
1.
2.
Hazard Warning Switch Test
Remove the center panel (see page 20-62).
Disconnect the 10P connector (A) from the hazard
warning switch (B).
4.
Push out the hazard warning switch from behind
the center panel (C).
Check for continuity between the terminals in each
switch position according to the table.
lf the continuity is not as specified, replace the bulb(D) orthe hazard warning switch.
Termin6l
;;;-_-\124710
OFF
ON@
3.
22-88

\lgnition Key Switch Test
NOTE: For more key-in beeper information, refer to the
circuit diagram (see page 22-90) and input test (see
page 22-921.
When the ignition key is in the ignition switch the
multiplex control unit senses ground through the
closed ignition key switch. When you open the driver's
door, the multiplex control unit senses ground through
the closed door switch and sounds the beeper.
1. Remove the steering column upper and lower
covers (see page'17-9).
2. Disconnect the 6P connector.
3.Check for continuity between the No. 1 and No. 2
termrnars.
. There should be continuity with the key in the
ignition switch.. There should be no continuity with the key
removed from the ignition switch.
lf the continuity is not as specfied, replace the
ignition switch.
lgnition Key Light Test
1.Remove the steering column upper and lower
covers (see page 17-9).
Disconnect the 6P connector,
The LED should come on when power is connected
to the No. 6 terminal and ground is connected to
No. 5 terminal.
lf the LED does not come on, replace the ignition
swrtch.
i'
/.'
22-91

Entry Light Control System
Control Unit Input Test
1. Before testing, trou bleshoot the m u ltiplex control system (see page22-172).
2. Remove the dashboard lower cover.
3. Disconnect the under-dash fuse/relay box connectors.
NOTE: All connectors are wire side of female terminals.
UNDER.DASH FUSE/RELAY BOX CONNECTOR K Il7PI
UNDEB-DASIJ FUSE/RELAY BOX CONNECTOR O {,I2PI
UNDEB.DASH FUSE/RELAY BOX CONNECTOR P {18PI
GRN LT GRN/REO
UNOER.DASH FUSE/REI"AY BOX CONNECTOB X I8PI
1,/134578
8ED/WHT WHT/BLK
UNDER.DASH FUSE/RELAY BOX CONNECTOR Y {13PI
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 recheck the system.. lf the terminals look OK, go to step 5.
GRN/RED
3456),/18.
YEL/RED
4.
22-92