2002 HONDA CIVIC ground

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

\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

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

Rear Window Defogger
Function Test
NOTE:. Be careful not to scratch or damage the defogger
wires with the tester probe.
. Before testing, check the No. 11 (30A) fuse in the
under-hood fuse/relay box and No. '14 ('10A) fuse in
the under-dash fuse/relay box.
1. Check for voltage between the ve rtica I dividersand
body ground with the ignition switch and defogger
switch ON.
There should be voltage as shown.
. lf there is no voltage. checkfor:- faulty defogger relay.- an open in the BLK, BLK,/YEL, or YEL/BLK wire.- taulty heater control panel.
. lf there is battery voltage, goto step 2.
6V
Check for continuity between the negative terminal(B) and body ground.
lf there is no continuity, check for:. an open in the BLK wire.. Poor body ground at the window antenna coil
mounting bolt.
Touch the voltmeter positive probe to the halfway
point of each defogger wire. and the negative
probe to the negative terminal,
There should be about 6 V with the ignition switch
and the defogger switch ON.
. lf thevoltage is asspecified, the defoggerwlre is
oK.. lf the voltage is not as specified, repair the
defogger wire.- lf it is more than 6 V, there is a break in the
negative half of the wire.- lf it is less than 6 V, there is a break in the
positive half of the wire.
2.
22-106
2.
Defogger Wire Repair
NOTE: To make an effective repair, the broken section
must be no longer than one inch.
1. Lightly rub the area around the broken section (A)
with fine steel wool, then clean it with alcohol.
Carefully mask above and below the broken portion
of the defogger wire (B) with transparent tape {C).
Mix the silver conductive paint thoroughly. Using a
small brush, apply a heavy coat of paint extending
about 1/8 inch on both sides of the break. Allow 30
minutes to dry.
Check for continuity in the repaired wire.
Apply a second coat of paint in the same way. Let it
dry 3 hours before removing the tape.
5.

4- Reconnect the moonrool control unit 5Pconnector, and makethese inputtests attheconnector.
.lfanytestindicatesaproblem,findandcorrectthecause,thenrecheckthesystem.. lf all the input tests prove OK, go to step 5.
CaviiyWireTest conditionTest: Desired resuhPossible caus6 if result is not obtained
5BLKUnder allconditionsCheck for continuity to ground:There should be continuity.Poor ground (G501)An open in the wire
,lYEUGRNlgnition switch ON (ll)Check for voltage to ground:There should be baftery voltage.Blown No. 6 (7.54)tuse in the underdash fuse/relay boxAn open in the wire
LT GRNlgnition switch ON (ll)MoonroofclosedCheck for voltage to ground:There should be 1V or less.Poor ground (G501)Faulty moonroof auto-stop switchAn open inthewire
Moonroof openCheck for voltage to ground:There should be battery voltage.Shortto groundFaulty moonroof auto-stop switch
Disconnectthe moonroof control unit 5Pconnector, and make these;nputtests at the connector
'lfanytestindicatesaproblem,findandcorrectthecause,thenrecheckthesystem.. lf all the inputtests prove OK, the control unit must befaultv. Replace it.
CavityWireTest conditionTest: Desired rosultPossible cause if result is not obtained
3RED//ELlgnition switch ON lll)Connect a jumper wire between No,3 and No. 5 terminals.Moonroof motor should run(opened).
Poorground (G501)Blown No. 6 (7.5Aifuse in the under'dash fuse/relay boxBlown No.7120Alfuse inthe underdash fuse/relay boxFaulty moonroof open relayFaulty moonroof close relayFaulty moonrooJ motorAn open;n thewire
2cRN,4/VHTlgnition switch ON (ll)Connect a jumper wire between No.2 and No. 5 terminals.I\,4oonroof motor should run {closed).
Poor ground (G501)Blown No. 6 (7.5Aifuse in the underdash fuse/relay boxElown No. 7 (20A)fuse in the underdash fuse/relay boxFaulty moonroof open relayFaulty moonrool close relayFaulty moonroof motorAn open in the wire
22-111

Moonroof
Switch Test/Replacement
'1 . Carefully pry the moonroof switch (A) out of the
headlin er.
2. Disconnectthe 5P connector (Blfrom the moonroof
swtrcn.
3. Check for continuity between the terminals in each
switch position according to the table.
Terminal
Pi.iti.. --\145
CLOSEFO
TILT
OPEN-o
lf the continuity is not as specified. replace the
moonroof switch.
4.
22-112
Motor Test
1. Remove the headliner (see page 20-54).
2. Disconnect the 2P connector from the moonroof
motor.
3. Check the motor by connecting power and ground
accordino to the table.
Terminal
pl.iri""---\
OPEN\7o
CLOSE(,
lf the motor does not run. replace it,
NOTE: See closing force check (see page 20-48)for
motor clutch test.
\J
J

Power Mirrors
Function Test
1. Remove the driver's pocket (see page 20-60).
2. Reach through the pocket opening, and push out
the power mirror switch (A).
,\
RED B
Wire side oftemale terminals
WHT/RED
RED/YEL
3. Disconnectthe'13P connector (B) from the switch.
4. Choose the appropriate test based on the
symptom:. Both mirrors don't work, go to step 5.. Left mirror doesn't work, go to step 7.. Right mirror doesn't work, go to step 8.. Defogger doesn't work (Canada), go to step 9.
Both mirrors
5. Check for voltage between the No. 2 terminal and
body ground with the ignitlon switch ON (ll).
There should be battery voltage.. lf there is no battery voltage, check for:- blown No. 14 (10A) fuse in the under'dash
fuse/relay box.- an open in the BLKryEL wire.. lf there is battery voltage, goto step 6.
6. Check for continuity between the No. 6 terminal
and body ground.
There should be continuity.. lf there is no continuity, check for:- an open in the BLK wire.- poor ground (G501).
. lf there is continuity, check both mirrors
individually as described in the next column.
RED/BLK
22-116
Left mirror
7. Connect the No. 2 terminal totheNo. l0terminal,
and the No. 5 (or No. 12) terminal to the No. 6
terminal with jumper wires. The left mirror should
tilt down (or swing left)with the ignition switch ON
fl r).. lf the mirrordoes nottiltdown (ordoes notswing
left), check for an open in the GRN/WHT (or BLU/
Wl-lT)wire between the left mirror and the 13P
conneclor, lf the wire is OK, check the left m irror
actualor.. lf the mirror neithertilts down nor swings left.
repair the BLU/BLK wire.. lf the mirrorworks properly, checkthe mirror
SWIICN,
Right mirror
8. Connect the No. 2 terminalto the No. 11 terminal,
and the No. 5 {or No. 13) terminal to the No. 6
terminal with jumper wires. The right mirror should
tilt down (or swing left)with the ignition switch ON
(

).. lf the mirror does not tilt down (or does not swing
left), check for an open in the GRN/WHT (or WHT/
RED)wire between the right mirror and the 13P
connector.
lf the wire is OK, check the right mirror actuator.. lf the mirrorneithertiltsdown norswings left,
repalr the RED|YEL wire.' lf the mirrorworks properly. checkthe mirror
swrrcn.
Defogger (Canada)
9. Connect the No. 1 and No. I terminals with a
jumper wire, and check for voltage between the
No. 2 terminal of the mirror connector and body
ground. There should be battery voltage and both
mirrors should warm up with the ignition switch
oN

t).. lf there is novoltage orneitherwarms up, check
for:- an open in the BLKI/EL or oRN wire.- blown No. 14 ('l0A)fuse in the under-dash
fuse/relay box.. lf only one fails to warm up, check:- its defogger.- poor ground (G501, G502). lf both warm up, checkthedefoggerswitch.

1.
2.
3.
Power Mirror Switch Test
Remove the driver's pocket (see page 20-60).
Reach through the pocket opening, and push out
the power mirror switch (A).
Disconnect the 13P connector (B) f rom the switch.
Check for continuity between the terminals in each
switch position according to the table.
Mirror Switch:
\.f9.-'"1L
Position256 1011 1213
UPCF--o
o-o
o-
G-c)o
o-o-
-o
!
RIGHT-o
o-o
UP
"[T
RIGHT
Defogger Switch (Canadal:
Te.minal
il;;; tlfI8
ONoo
OFF
lf the continuity is not as specified, replace thepower mirror switch.
5.
22-117
1,
2.
Power Mirror Actuator Test
Remove the door panel (see page 20-4).
Disconnect the 6P connector (A) from the power
mirror actuator (B).
Check actuator operation by connecting power and
ground according to the table.
Terminal
Position64
TILT UPoo
TILT DOWNo
SWING LEFTo@
SWING RIGHT@
4. lf the mirror fails to work properly, replace the
mtrror actuator.
Defogger Test {Canada);
5. Check for continuity between the No. 1and No.2
terminals of the 6P connector. There should be
continuity. lf there is no continuity, check for an
open circuit.