2003 HONDA CIVIC ect

I
5. With the connectors stilldisconnected, make these input tests at the connector'
. lf anv test indicates a problem, find and correct the cause, then recheck the system. lf all the inpul tests prove OK, go to step 6.
6.Reconnect the connectors to the under dash fuse/relaV box, and make these input tests at the appropriate connectors on the under-dash
fuse/relay box.
.lfanytestindicatesaproblem,findandcorrectthecause,thenrecheckthesystem..lfalltheinputtestsproveOK,themultiplexcontrolunitmustbefaulty.Replacetheunder'dashfuse/relaYboxassemblY
CavitvWireTest conditionTest: Desired resultPossible cquse il result is not obtained
K28LU/ORNlJnder allconditionsCheck for continuity between the K2terminal and the keyless receiverunit 5P connector No. 2 terminal:There should be continuitv.
An open in the wire
o7GRN/REDCejling light switch inmiddle position.Attach to ground:Ceiling light(s)should come on.Blown No. 3 (7.5A) fuse in the under hood
Blown bulbFaulty ceiling lightAn ooen in the wire
X8WHT/BLKUnder allconditionsAttach to ground:lgnition key light should come on.Elown No.3 (7.5A)fuse in the under hoodfuse/relay boxFaulty ignition key light (LED)
An ooen in the wire
CavitvWireTest conditionTest: Desired resultPosq!!!c sq!!ej1!.9!!!!j €d
P18REDHatch openCheck for voltage to ground:There should be 1 V or less.Poor ground (G552)
Fauhy hatch latch switchAn open inthewire
Hatch closedCheck for voltage to ground:There should be 5 v or more.Faulty hatch latch switchShortto oround
Q3GRNDriver's door openCheck for voltage to ground:There should be 1 V or less.Faulty drlver's door switchAn oDen in the wire
Driver's door closedCheck for voltage to ground:Thar. shoul.l he 5 V or more.Faulty driver's door switch
o4LT GRN/BED
RED^vHT
Passenger's doorCheck for voltage to ground:There should be 1 V or less.
' Faulty passenger's door switch' An onen inthewire
Passenger's doorcroseoCheckfor voltage to ground:There should be 5 Vor more.
. Faulty passenger's door switch. Shor o oround
X5lgnition key insertedinto the ignitionCheck for voltage to ground:There should be 1 V or less.Poor ground (G401)
Faulty ignition key switchAn ooen in the wire
lgnition key removedfrom the ignitionCheck for voltage to ground:There should be 5 V or more.Faulty ignition key switchShort to ground
Y8YEUREDDriver's door lockknob switch lockedCheck for voltage to ground:There should be 1 V or less.Poor ground {G501)Faulty driver's door lock knob switchAn ooen in the wire
Driver's door lockkn6h cwirch Inl6cke.lCheck for voltage to ground:There should be 5 V or more.Faulty driver's door lock knob switchShort to oround
22-93

Interior Lights
Ceiling Light/Spotlights Test/
Replacement
Turn the ceiling lighvspotlights switches OFF.
Carefully pry off the lens {A) wilh a small
screwdnver,
Ceiling Light: 5W
Spotlight: 5Wx2
1.
2.
x 1-0 mm
3. Remove the two screws and the housing (B).
4. Disconnect the 4P connector (C) fromthehousing.
5. Check for continuity between the terminals in each
switch position according to the table.
\A
Terminal
P."lil;- -----_lil
celL,"c a,c", oFF
isoottiohts MIDDLE'uir oN
re-o
a}-+4-o
SPOTLIGHTS
I Ceilinq liohtroFF-- i
RONo(.F.O
OFF
LONG-
OFF
lf the continuity is not as specified, check the bulb.lf the bulb is OK, replace the ceiling lighvspotlig hts.
22-96
1.
2.
3.
4.
Rear Ceiling Light Test/
Replacement
Turn the light switch OFF.
Carefully pry offthe lens (A) with a small
screwdriver.
Ceiling Light: 8 W
5x1.0mm
A.
Remove the two mounting screws.
Disconnect the 3P connector (B) from the housing
{c).
Check for continuity between the terminals in each
switch position according to the table.
Terminal
Position123
OFF
MIDDLEo
ONG-@-O
lf the continuity is not as specified, check the bulb.
lf the bulb is OK, replace the rear ceiling light.

Cargo Area Light Test/Replacement
1.Open the hatch.
Carefully pry out the cargo area light (A).
Cargo Area Light: 5W
Disconnect the 2P connector (B) from the light.
Check for continuity between the No. 1 (+) and
No.2 ( )terminals. There should be continuity.
lf there is no continuitv, check the bulb. lf the bulb
is OK, replace the cargo area light.
'1.
Hatch Latch Switch Test
Open the hatch.
Remove the hatch lower trim panel (see page 20-
s3).
Disconnect the 2P connector {A) from the hatch
4.Check for continuity between the No. 1 and No. 2
terminals.
. There should be continuity with the hatch open
. There should be no continuity with the hatch
ctoseo.
lf the continuity is not as specified, replace the
hatch latch.
latch (B),
22-97

Audio System
Component Location Index
AUOIO UNITRemoval/f nstallation, Daoe 22-100Connector Terminals, pa-ge 22-101
RIGHT DOOB TWEETERReplacement, page 22-102
ANTENNA SUB LEAD
DRIVER'S DOOR SPEAKERReplacement, page 22 102
ROOF ANTENNAReplacement, page 22-'1 03
RIGHT REAR SPEAKERReplacement, page 22-102
LEFT REAR SPEAKERReplacement, page 22-102
ANTENNA LEAD
22-98

Audio System
Audio Unit Removal/lnstallation
NOTE:. Put on gloves to protect your hands.. Take care not to scratch the dashboard and relatedpa rts.
1. Make sure you have the anti-theft code for the radio,
then write down the frequencies for the radio's
preset buttons.
2. Remove the driver's dashboard lower cover (see
page 20-59).
3. Remove the two mounting bolts, then pull out the
center panel (A).
4.Disconnect the audio connector (B) and antenna
lead (C), heater control panel connectors (D) and
HAVC push switch assembly (E), then remove the
center panel.
22-100
!\,
7.
Remove the heater control panel (see page 21 38).
Remove the four mounting bolts and the audio unit
from the radio brackets.
Installthe audio unit in the reverse order of
removal, and note these items:
. Make sure the audio unit and A/C connectors areplugged in properly, and the antenna lead is
connected properly.. Enter the anti-theft code for the radio, then enter
the customer's radio station presets.
\v
I

Audio Unit Connector Replacement
CavityWireConnects to
1YEUG RNRoof antenna
2YEUREDACC (Power)
3Not used
4Not used
5PNKRioht rear sDeaker (+I
6BLU^/vHTLeft rear sDeaker (+)
7GRN/YELFront oassenqer's door sDeaker {+)/Riqht tweeter (+)
8G RN/BLKDriver's door speaker { + )/Left tweeter (+ )
9RED/BLKLiqhts on siqnal
10WHT/REDConstant power
11Not used
12Not used
Not used
14Not used
taB LU/YE LRioht rear soeaker (-
toBLU/BLKLeft rear sDeaker (
11GRY/REDFront passenqer's door speaker ( )/Riqhttweeter {
18LT GRNDriver's door sDeaker ( )/Left tweetr ( -
19REDDash liqhts briqhtness controller
20BLKG round (G503)
AUDIO UNIT 2OP CONNECTOR
22-101

Audio System
Speaker Replacement
Door Speaker:
1. Remove the door panel (seepage20-4).
2. Pull the top of the speaker {A) straight out, just
enough to release the upper clip. lf you pull the
speaker out too far, you will damage the lower clips(C). Then lifi the speaker straight up to release the
lower clips.
3. Disconnect the 2P connector (B), and remove the
speaKer.
Tweeter:
Carefully pry the tweeter (A) out of the mirror mount
cover, then disconnect the 2P connector (B) from the
tweeter.
'-----d
22-102
Rear:
1.Remove the speaker cover (A).
Remove the three screws, then disconnect the 2P
connector (B) from the speaker (C).
2.

Roof Antenna Replacement
1. Remove the rear part of headliner (see page 20-54).
2, Disconnect the antenna lead connector (A) and 1P
connector (B) from the roof antenna (C).
3. Remove the mounting nut and the antenna.
22-103