2002 HONDA CIVIC fuse

ABS Components
5.
6.
ABS Indicator Circuit Troubleshooting (cont'dl
Turn the ignition switch ON (ll).
Measure the voltage between the ABS control unit
31P connector termina I No. 15 and body ground.
ABS CONTROL UNIT 3IP CONNECTOR
Wire side of female terminals
Is there battety voltage?
YES-Go to step 7.
NO-Repair open in the wire between the No. 11(7.5A) fuse and the ABS control unit.I
Turn the ignition switch OFF.
Check for continuity between the ABS control unit
31P connector terminal No. 19 and body ground.
ABS CONTROL UNIT 31P CONNECTOB
Wire side ot Iemale terminals
ls there continuity?
YES Go to step 9.
NO-Repair open in the wire between the ABS
control unit and body ground (G202). t
9. Turn the ignition switch ON (ll).
1.
8.
19-54
10. Connect the ABS control unit3lPconnector
terminal No.20 and body ground with a jumper
wire.
ABS CONTROL UNIT 31P CONNECTOR
Wire side of female terminats
Does the ABS indicator go off?
YES-Check for loose terminals in the ABS control
unil 31P connector. lf necessary, substitute a
known-good ABS modulator-control unit, and
recheck.I
NO Go to step 1 1.
Remove the gauge assembly, and leave the
connectors connected. Connect the gauge
assembly connector A (22P) terminal No. '12 and
body ground with a jumper wire.
GAUGE ASSEMBLY CONNECTOR A (22P)
\'l '1.
Wire side of female terminals
Does the ABS indicator go off?
YES-Repair open in the wire between the gauge
assembly and the ABS control unit.I
NO-Check for loose gauge assembly connectors.
lf the connectors are OK, replace the printed circuit
board in the gauge assembly.l

Moonroof
Symptom Troubleshooting Index
SymptomDiagnostic procedureAlso check for
Water leaks'1. Check for a clogged drain tube.
2. Check for a gap between the glass weatherstrip and the roof
panel.
3. Check for a defective or an improperly installed glass
weatherstrip or drain channel.
4. Check for a gap between the drain seal and the roof panel.
G lass height
adJustment
Wind nolse1. Check for excessive clearance between the glass weatherstrip
and the root panel.
Glass height
adjustment
Deflector noise1. Check for a imDrooer clearance between deflector seal and
roof panel.
2, Check for a insufficient deflector extension.
3. Check for a deformed deflector.
Motor noise1. Check for a loose motor.
2. Check for a worn gear or bearing.
3. Check for a deformed cable assembly.
Check closing force
Glass does not move,
but motor turns
1. Check for a defective gear or inner cable.
2. Check for foreign matter stuck between the guide rail and the
slide r.
3. Check for a loose inner cable.
4. l\,4ake sure the cable assembly is attached properly.
Glass does not move
and motor does nol
turn (glass can be
moved with
moonroof wrench)
1. Check for a blown fuse.
2. Check for a faulty moonroof switch.
3. Check the limit switch.
4. Check for a run down battery.
5. Check for a defective motor.
6. Check for a faulty relay.
20-36

Driver's side:
7. From under the dash, disconnect the interior wire
harness connector (A), driver's door wire harness
connectors (B), side turn signal light connector (C).
roof antenna connector (D), antenna lead (E). clutch
switch connectors (F), and brake switch connector(G), and disconnect the floor wire harness
connectors (H) and engine compartment wire
harness connectors (l)from the under-dash fuse/
relav box (J).
Middle portion:
8. Disconnect the floor wire harness connectors (A)
and combination subharness connector (B).
Passenger's side:
9. From under the dash, disconnect the dashboard
wire harness connectors (A), EPS subharness
connectors (B), engine compartment wire harness
connectors (C), A,/C subharness connectors (D),
passenger's door wire harness connectors {E), and
side turn signal light connector (F).
10. Detach all of the harness and connector clips.
(cont'd)
20-67

Heating and Air Conditioning
Component Location Index (cont'dl
CONDENSER FANTest, page 22-51
RADIATOR FAN RELAYTest, page 22-51
Tesl, page 22-51CLUTCH RELAY
MOTOR RELAYTest, page 22-5I
UNDER.HOOD FUSE/RELAY BOX
... A/C PRESSURE SWITCH
RADIATOR FAN
\
.\
-
'-t t_]]l
/l I T I --::--
l- -l -
CONOENSER FAN
21-4

Heating and Air Conditioning
{
a
a
SvmptomDiagnostic procedureAlso check for
Recirculation control doors do not
change between Fresh and Recirculate
Recirculation Control Motor
Circuit Troubleshooting (see page
21 251
Cleanliness and tightness of all
connectors
Both heater and Ay'C do not workHeater Control Power and Ground
Circuits Troubleshooting (see
page 21-27)
Blown fuse No. '14 (10A) in the
under-dash fuse/relay box
Poor ground at G501
Cleanliness and tightness of all
conneclors
Condenser fan does not run at all (but
radiator fan runs with the Ay'C on)
Condenser Fan Circuit
Troubleshooting {see page 21-28)
. Poor ground at G301. Cleanliness and tightness of all
connectors
Both fans do not run with the A,/C onRadiator and Condenser Fans
Common Circuit Troubleshooting
(see page 21-29)
Blown fuse No. 1 (20A) and No.4
(20A) in the under-hood fuse/relay
box
Poor ground at G30l
Cleanliness and tightness of all
connectors
Compressor clutch does not engage(both fans run with A,/C on)
Compressor Clutch Circuit
Troubleshootinq (see Daqe 21-30)
Cleanliness and tightness of all
connectors
A/C system does not come on (both
fans and compressor)
Ay'C Pressure Switch Circuit
Troubleshooting (see page 21-32)
Blown fuse No. 1 (20A) and No. 4
(20A) in the under-hood fuse/relay
box
Poor ground at G301
Cleanliness and tightness of all
connectors
\Symptom Troubleshooting Index
\
21-10
!

Heating and Air Conditioning
Gircuit Diagram
UNDEN rcODFUSVRELIYSOXUNOER DASNfUSE/8EIlYBOX|GNUION SWTCfilG2 HoI ii 0l\l llll
+. C}F BLK/RED rG2 /
II
I
I
In.G301
A/C PnESSUEtswTOt
t...iCF
RADIATOS
oT0n
NADIATOS) tAl'// swtlcllj 19S"F 193"C) l
CONDEN$N
MOTOB
I8u(
I
IBLX
I
G301
l
;
/ .I IHEFMAI
Y PBorEcro8
lTl *n*,*,| _l
MUITIPLD(CONTFOIUNITI
-!10. irgF 8Ll
TT
BLU
I ilntho undor dasi luse/lelay box
21-14

Heating and Air Gonditioning
DTC Troubleshooting {cont'd)
DTC 12: A Problem in the Blower Motor
Circuit
'1. Check the No. 12 (40A)fuse inthe under-hood
fuse/relay box, and the No. 14 (10A) fuse in the
under-dash f use/relay box.
Are the tuses OK?
YES-Go to step 2.
NO Replace the fuse(s), and recheck.l
2. Connect the No. 2 terminal of the blower motor 2P
connector to body ground with a jumper wire.
BLOWER MOTOB 2P CONNECTOR
JUMPER ] BLU/BLK
Wire side ol female terminals
3. Turn the ignition switch ON (ll).
Does the blowet motor run?
YES Go to step 4,
NO Go to step 17.
4. Turn the ignition switch OFF.
5. Disconnect the jumper wire.
6. Disconnect the power transistor 4P connector.
21-20
8.
7. Check for continuity between the No. 3 terminal of
the power transistor 4P connector and body ground.
POWER TRANSISTOR 4P CONNECTOR
Wire side ol temale terminals
ls there continuity?
YES-Go to step 8.
NO-Check for an open in the wire between the
power transistor and body ground. lf the wire is OK,
check for poor ground at G502.I
Connect the No. 1 and No. 3 terminals of the power
transistor 4P connector with a jumper wire.
POWER TRANSISTOR 4P CONNECTOR
Wire side of female terminals
Turn the ignition switch ON (ll).
Does the blower motor tun at high speed?
YES-Go to step 10.
NO-Repair open in the wire between the power
transistor and the blower motor.l
Turn the ignition switch OFF.
Disconnect lhe jumper wire.
9.
10.
11.
2
34
BLK
o

1a
13.
Disconnect heater control panel connector A (14P).
Check for continuity between the No. 7 and No. 8
terminals of heater control panel connector A (14P)
and body ground individually.
HEATER CONTNOL PANEL CONNECTOR A {14PI
ls there continuity?
YES Repair any shortto body ground in the
wire(s) between the heater control panel and the
power transistor.I
NO Go to step 14,
Check for continuity between the following
terminals of heater control panel connector A ( 14P)
and power transistor 4P connector.'l4Pt 4P:
No.7 No.4
No.8 No.2
HEATER CONTROL PANEL CONNECTOR A (14P)Wire side ot female terminals
Iz341516
T89ro lxlI12l 13 l 14
)8LU/RED
ILU/YEL
POWER TRANSISTOR 4P CONNECTORWire side of female terminals
ls thete continuity?
YES Go to step 15.
NO Repair any open in the wire(s) between the
heater control panel and the power transistor.l
14.
BLU/YEL
15.
lo.
17.
18.
19.
Reconnect heater control panel connector A (14P).
Test the power transistor (see page 21-38).
ls the power transistor OK?
YES Check for loose wires or poor connections at
heater control panel connector A (14P) and at the
power transistor 4P connector. lf the connections
are good, substitute a known-good heater control
panel, and recheck. lf the symptom/indication goes
away, replace the original heater control panel.l
NO Replace the power transistor.I
Disconnect the jumper wire.
Disconnect the blower motor 2P connector.
Measure the voltage between the No, 1 terminal of
the blower motor 2P connector and body ground.
BLOWER MOTOR 2P CONNECTOR
BLU/WHT
Wire side of female terminals
ls thete battery voltage?
YES- Replace the blower motor.l
NO Go to step 20.
Turn the ignition switch OFF.
Remove the blower motor relay from the under-
hood fuse/relay box, and test it (see page 22-511.
ls the relay OK?
YES Go to step 22.
NO- Replace the blower motor relay.l
20.
21.
(cont'd)
21-21