k2 terminal HONDA CIVIC 2003 7.G Workshop Manual

4. Make these input tests at the connector,
.lfanytestindicatesaproblem,findandcorrectthecause,thenrecheckthesystem.
. lf all the input tests prove OK, the control unit must be faulty. Replace it.
CavityWireTest conditionTest: Desired resultPossible cause if result is not obtained2R E D/BLUUnder all
conditions
Check for voltage to ground:
There should be battery voltage.
Blown No. 14 (40A) fuse in the
under-hood fuse/relay box
Blown No. 3 {10A)fuse in the
under-dash fuse/relay box
An open in the wire12YE L/RE Dlgnition switch
oN (r)Check for voltage to ground:
There should be battery voltage.
Blown No. l2 (7.5A)fuse in the
under-dash fuse/relay box
An open in the wire
BLKUnder all
conditions
Check for continuity to ground:
There should be continuitv.
. Poor ground {G50'1). An oDen in the wire7BLKUnder all
conditions
Check for continuity to ground:
There should be continuitv.
. Poor ground (G501)
' An open in the wire
10REDI/ELCombination
light switch ON/ =f\
Check for voltage to ground:
There should be battery voltage.
Blown No. 15 (15A) fuse in the
under-hood fuse/relay box
Faulty headlight relay 2
Faulty combination light switch
An open in the wire
1RED/B LUCombination
light switch ON
{iD), and
dimmer switch
in HIGH
Connect a jumper wire between
No.3 and No. 1 terminals.
Both headlights (HIGH) and
h igh beam indicator light
should come on.
Blown bulb
Faulty low beam cut relay
Faulty combination light switch
Poor ground (G50'l )
An open in the wire'11
3
RED/BLK
GRN/BLK
Combination
light switch ON(iD), and
dimmer switch
in HIGH
Com bination
light switch ON(iD), and
dimmer switch
in HIGH
Connect a jumper wire between
No. 5 and No. 11 terminals.
Right headlight (HIGH) should
come on.
Check for continulty to ground
There should be continuity.
. Blown bulb. Faulty combination light switch. Poor ground (G 50'1 ). An open in the wire
. Faulty combination light switch. Poor grou nd {G501). An open in the wire
5
6GRN/ORNParking brake
lever oulled
Check for continuity to ground:
There should be continuitv.
Faulty parking brake switch
An open in the wire
8BLU/REDCombination
light switch OFF
Check for voltage to ground:
There should be battery voltage.
Faulty headlight relays
Short to ground
An ooen in the wire
WHT/BLUlgnition switch
oN 0r)
Attach to ground:
The DRL indicator light should
come on.
. Blown No. 10 (7.5A) fuse in the
under-dash fuse/relay box. Faulty DRL indicator. An ooen in the wire
t5G RN/REDlgnition switch
oN (||)Attach to ground:
The brake system light should
come on.
Faulty brake system indicator
An open in the wire
22-77

Exterior Lights
4.
5.
Combination Light Switch Test/Replacement
1. Remove the driver's dashboard lower cover (see page 20-60).
2. Remove the steering column covers (see page 17-9).
3, Disconnectthe l6Pconnector(A) f rom the combination light switch (B).
Remove the tlvo screws, then slide out the combination light switch.
Inspect the connector terminals to be sure they are all making good contact.
. lf the terminals are bent, loose or co rroded, repa ir them as necessa ry, a nd recheck the system..lftheterminalslookOK,checkforcontinuitybetweentheterminalsineachswitchpositionaccordingtothe
tables.- lf the continuity is not as specified, replace the switch.
Light switch:
Telmint
Position451213
Headlight switch
OFF
LOWo--
HIGHo--
Passing switch
OFF
ONo-
Turn signalswitch:
Terminal
Position21011
LEFT----o
NEUTRAL
RIGHTo--
22-80

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
00u! u0
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

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