2003 HONDA CIVIC fuse box location

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Starting System
Component Location Index
UNDER-DASHFUSE/RELAY BOX
CLUTCH INTERLOCK SWITCHTest, page 4-6
STARTERStaner Circuit Troubleshoot,ng, page 4 5Solenoid Test, page 4-7Performance Test, page 4-8Replacement, page 4-9Overhaul, page 4 '10
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STARTER CUT RELAYTest, page 22-51
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4-3

Cruise Gontrol
Cruise Control Unit Input Test
SRS components are located in this area. Reviewthe SRS component locations (see page 23-'13) and precautions andprocedures (see page 23-14) in the SRS section before performing repairs or service.
1. Disconnect the 14P connector from the control unit.
2. 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 recheckthe system.. lf the terminals look OK, go to step 3.
Wire side offemale terminals
3. With the 14P connector disconnected, make these inDut tests.
CavityWireTest conditionTest: Desired resultPossiblecause ifresuh is not obtained
BRN/WHTConnect battery
power
Check the operation of the
magnetic clutch: Clutch
should click and output link
should be locked.
' Faulty actuator. Poor ground (G301)
. An open in the wire. Shon to ground (arcs when
Dower is connected)
2BLUlgnition switch ON(ll), main swltch ON
and brake pedal
pressed, then
reteaseo
Check for voltage to ground;
There should be 0 V with lhe
pedal pressed and battery
voltage with the pedal
released.
. Faulty brake pedal position
switch. An open in the wire. Open in cruise control main
swrtcn. Blown No. 4 (10 A)fuse in the
under/dash fuse/relav box
3BLKUnder all conditionsCheck for continuity to
grouno:
There should be continuitv
. Poor ground (G501)
. An open in the wire
BLIVORNlgnition switch ON
flr)
Check for voltage to ground:
There should be battery
vottaqe.
Blown No. 4 (10 A)fuse in the
under-dash f use/relay box
An oDen in the wire
5WHT/BLKBrake pedal pressed,
then released
Check for voltage to ground:
There should be battery
voltage with the pedal
pressed, and 0 V with thepedal released.
Blown No. 7 {15 A) fuse in the
under-hood fuse/relay box
Faulty brake pedal position
SWIICN
An oDen in the wire
4-40

Fan Controls
Component Location Index
RADIATOR FAN RELAY
RADIATOB FAN SWITCHTest, page 10'17Replacement, page'10-17
UNDER.HOODFUSE/RELAY BOX
RADIATOR FAN ASSEMBLYMotor Test, page 10 4
CONDENSER FAN ASSEMBLYMotor Test, page 10-4
10-11

Component Location Index
UNDER.HOODFUSE/RELAY BOX
EPS CONTROL UNITEPS Control Unit Removal/lnstallation,page 17 -67
UNDER.DASH FUSE/RELAY BOX
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X ]
DATA LINK CONNECTOR I16P)
TOROUE SENSOR
STEERING GEARBOXSteering Gearbox Removal, page 17-51Steering Gearbox Overhaul, page 17-55Steering Gearbox Installation, page 17-63
Removal/lnstallation,page l7-49
GAUGE ASSEMBLY
MOTOR
17-17

ABS Gomponents
(Component Location Index
UNDER.HOOD FUSE/RELAY BOX
RIGHT-REAR WHEEL SENSORInspection, page 19-59Replacement, page 19-59UNDER.OASH FUSE/RELAY BOX
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LEFT.REARWHEEL SENSORInspection, page 19-59Replacement, page 19-59
DATA LINK CONNECTOR I16PIRIGHT.FRONT WHEEL SENSORInspection, page 19-59Replacement, page 19-59
ABS MODULATOR.CONTROL UNITRemoval and Installation, page 19'57LEFT-FRONT WHEEL SENSORInspection, page 19-59Replacement, page 19 59
19-30

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
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CONOENSER FAN
21-4

\Body Electrical
Body ElectricalSpecialToolsGeneral Troubleshooting tntorrnaiion.'......
Relay and Control Unit Locations .....
Connectors and Harnesses
Fuse/Relay Boxes ...............................
Power Distribution .............................
Ground Distribution ...........................
Under-dash Fuse/Relay Box ..............
Battery ..............
Relays ................
*lgnition Switch ..............
*Gauges
Component Location Index .......................Self-diagnostic Procedure ..........................Circuit DiagramGauge Bulb Replacement ..........................Gauge Assembly ReplacementCoolant Temperature
Gauge Troubleshooting .... ....................Vehicle Speed Signal CircuitTroubleshootingVSS Replacement
Exterior LightsComponent Location Index .......................Circuit DiagramDaytime Running Lights ControiUnit Input Test (Canada) ........................Headlight Ad,ustment .................. .. .....Headlighr Replacement ..............................Combination Light SwitchTest/ReplacementBulb ReplacementTaillight Replacement ..........................High Mount Brake Light Replacement ......License Plate Light Replacement ..............Side Marker Light Replacement ................Brake Pedal Position Switch Test ..............Side Turn Signal Light Replacement ........
Turn Signal/HazardFlasher SystemComponent Location Index .......................Circuit DiagramTurn Signal/Hazard Relay lnputTest ........Hazard Warning Switch Test
22,3
22-7
22-13
22-44
22-46
22-4A
22-49
22-50
22-51
22-53
22-5422-5622-5422 6322-64
22-64
22-6522 61
22-6822--71
22-7 622-7422-79
22-AO22-4122-8222-4222-4322-4322-4422-84
22-8522 A622-8722-88
22-10422-105
22-10622-107
Entry Lights control systemComponent Location Index ....................... 22-89Circuit Diagram ......... 22 90lgnition Key Switch Test .....................,...... 22-9'llgnition Key Light Test ............................... 22-91Control Unit Input Test ..........,.................... 22 92
Interior LightsComponent Location Index ....................... 22-94Circuit Diagram ......... 22-95Ceiling LighVSpotlightsTesVReplacement ................................... 22-96Rear Ceiling Light TesVReplacem ent ........ 22-96Cargo Area Light Test/Replacem ent ......... 22-97Hatch Latch Switch Test ..,..,....................... 22-97
*Audio SystemComponent Location Index ....................... 22-98Circuit Diagram ......... 22,99Audio Unit Removal/lnstallation ............... 22-1OOAudio Unit Connector Replacement ......... 22-101Speaker Replacement ................................ 22-102Roof Antenna Rep1acement ....................-.. 22-103
Rear Window DefoggerComponent Location Index ...........Circuit Diasram .. ....... .. ..... ....... ...:::::.::.::.Function TestDefogger Wire Repair .................................Noise Condenser CapacityTest ................
MoonroofComponent Location Index ....................... 22-1OBCircuit Diagram ......... 22-109Moonroof Control Unit Input Test ............. 22-'l10Switch TesVReplacement ........,.....,........... 22-1 12Motor Test ................. 22-112Limit Swilch Test ...... 22-'l'13Auto-stop Switch Test ................................ 22-1 13
Power MirrorsComponent Location Index ....................... 22-114Circuit Diagram ......... 22-115Function Test ............. 22-116Power Mirror Switch Test .......................... 22-ll7Power Mirror Actuator Test ....................... 22-117Power Mirror Actuator Replacement ........ 22-11A
* HornsComponent Location Index ....................... 22-120Circuit Diagram ......... 22-121Horn TesVReplacement ...........................-. 22-122Horn Switch Test .,.... 22-122
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Relay and Control Unit Locations
Engine Compartment
RADIATOR FANRELAY
BLOWER MOTOR RELAY
HORN RELAY
CONDENSER FANRELAY
UNDER-HOODFUSE/RELAY BOX
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ELD UNIT
22-7