1996 HONDA CIVIC fuel light

Connector ldentification and WireHarness Routing
Engine Wire Harness (D15Y? engine): ,99 - OO models
c101
c102
cl03
c't04
c 104
c 105
cr 06
0107
c108
c109
c't 10
c11 r
c112
c113
c114
c115
c116
c117
cl18
c119
c120
c121
c122
c123
c124
c124
c125
c127
c128
c129
c 130
c 131
c134
c135
10
3
'I
3
?
2
3?
2
14
14
3
2
8
1
Left side of engine compartment
Middle of engine
fvliddle of engine
Left side of engine compartment
Left side of engine companment
Middle of engine
Middle of engine
Middlr ol sngins
Middle of engine
Middle of engine
Middle of engine
Middle of engine
Middle of engine
Middle of engine
Middle of engine
Middle of engine
Middle of engine
Middle of engine
Right side of engine compartment
Middle of engine
Middle of engine
Middle of engine
Middle of engine
Middle of engine
Middle of engine
Middle of engine
Middle of engine
Middle of engine
Middle of engine
Middle of engine
Right side ot engine compartment
Behind right kick panel
Under right side of dashBehind right kick panel
Behind right kick panel
Behind right kick panel
Main wire harness (C303)
Crankshaft speed fluctuation (CKF)
sensor
Engine oil pressure switch
Alternator
AlternatOr
No. l fuel injector
No.2 fuel injector
No. I fual itjecto,
No.4 fuel injector
IAC valve
Throttle position (TP) sensor
Manifold absolute pressure {MAp) sensorIntake air temperature 0AT) sensorPower steering pressure (PSp) switchEVAP purge control solenoid valveJunction connector
Junction connector
Vehicle speed sensor (VSS)
Countershaft speed sensor
Engine coolant temperature {ECT)switch A
Distributor
Engine coolant temperature (ECT)
sending unit
Engine coolant temperature (ECT) sensor
Primary HO2S (sensor 1)
Back-up light switch
Lock-up control solenoid valveSecondary HO2S (sensor 2)Mainshaft speed sensor
Linear solenoid valve
Shift control solenoid valve
Starter solenoid
Junction Connector
Main wire harness (C446)
ECM/PCM
ECM/PCM
PCM
USA
Canada
M/T
Atr
Atr
Alr
Al-|.
Left side of engine compartment
Right side of engine compartment
Middle of engineEngine ground, via engine wire harness
23-24

Connector ldentification and WireHarness Routing
Engine Wire Harness {81642 engine}: .99 - 00 models
c 101
c102
cl03
c104
c 104
c'105
c106
cl01
c108
c110
cl11
cl12
c1'13
c114
c115
c117
cl19
c120
c121
c122
c123
c124
c129
c130
c l31
c133
c134
c137
c 138
c139
c140
Left side of engine companment
Middle of engine
Middle of engine
Left side of engine compartment
Left side of engine compartmentlvliddle of engine
Middle ot engine
Middle of engine
Middle of engine
Middle of engine
Middle of engine
Middle ot engine
Middle of engine
Middle of engine
Middle of engine
Middle of engine
Middle of engine compartment
Middle of engine
Middle of engine
Middle of engine
lMiddle of engine
Middle of engine
Middle of engine
Right side of engine compartment
Behind right kick panel
Under right side of dash
Behind right kick panel
Behind right kick panel
Middle of engine
Middle ot engine
lMiddle of engine
Middle of engine
10
2
,]
4
3
2
2
2
2
3
3
2
2
2
14
14
3
2
'10
'I
2
4
2
1
20
22
25
31
2
2
I
Main wire harness (C303)
Crankshaft speed fluctuation (CKF)
sensor
Engine oil pressure switch
Alternator
Alternator
No. 1 fuel injector
No. 2 tuel injector
No. 3 fuel injector
No. 4 fuel injector
Throttle position (TP) sensor
Manifold absolute pressure (MAP) sensorIntake air temperature (lAT) sensorPower steering pressure (PSP) swjtchEVAP purge control solenoid valve
Junction connector
Junction connector
Vehicle speed sensor (VSS)
Engine coolant temperature (ECT)
switch A
Distributor
Engine coolant temperature (ECT)
sending unit
Engine coolant temperature {ECT) sensorPrimary HO2S (sensor 1)
Back-up light switch
Starter solenoid
Junction connector
Main wire harness (C446)
ECM
ECtvl
Knock Sensor {KS)IAC valve
VTEC solenoid valve
VTEC pressure switch
USA
Canada
Left side of engine companment
Right side of engine compartment
Engine ground, via engine wire harness

Gauge Assembly
Bulb Locations (With Tachometer)
GAUGE LIGHT II.' WI
SEAT BELTREMINDER LIGHT I1.4 WI
LOW FUELLIGHT 13 W)
RIGHT TURN SIGNALINDICATOR LIGHT I1.4 WI
A/T GEARGAUGE LIGHTS 13 W)
CI{ARGING SYSTEM LIGHT (1.,1W)
GAUGE I-IGHT {1,4 WI
LOW ENGINE OIL PRESSUREINDICATOR LIGHT (1,' W}
HIGH EEAMINDICATOR LIGHT(1.4 W)
GAUGE LIGHT l3.il Wl
MALFUNCTIONINDICATORLAMP {MIL}BULE (1.{ Wl
WASHER I.'C VELINDICATOR LIGHT{1.4 Wl (Canada)
LEFT TURN SIGNALINDICATOR LIGHT {1.4 WI
sRsTOB (1.4 Wl
{On the printed circuit board)INDICATOR (1.12 x 6l(On the printed
circuit board)
ABS |ND|CATOR (1.. Wl{On the printed circuit board)CRUISE or SHIFT-UP INDICATOR 11.12 11.{On the orinted circuit board)
23-136

JBulb Locations {Without Tachometer)
TRUNK INDICATORLIGHT {1.i1W}
.4 Wl
CHARGING SYSTEM LIGHT 11,4 W}
LTGHT (1.4 W)GAUGE LIGHT
SEAT BELTREMINDER LIGHT (1.4 WI
LOW ENGINE OIL PRESSUBE
INDICATOB LIGHT (1.4 WI
LOW FUEL INDICATORLrGl{T (3 W)
RIGHT TURN SIGNALINOICATOR LIGHT
(1.1Wt
GAUGE LIGHTS {3 WI
WASHER LEVELINDICATOR LIGHT{1.4 W} lcanad.l
HIGH BEAMINDICATOR LIGHTMALFUNCTIONINDICATORLAMP (MIL)
BULB {1.4 WI
{1.ilW)
LEFT TURN SIGNALINDICATOR LIGHT {1.4 WI
A/T GEAR POSITIONINDICATOR (1.12 x 6)(On the printed
circuit board)
sRs TND|CATOR 11.4 W)
{On the Drinted circuit board}
aBs tNDtcAToR t1.4 W)(On the printed circuit board)(3.{ Wt
o/ o \7 o
23-137

J
9. lMeasure the resistance between the No 1 and No. 2
terminals at E {EMPTY), 112 \HALF FULL) and F
(FULL) by moving the lloat.
USA, Canada-produced {Ceramic board type):
Too ot lhe workbench (Bottom of the fuel tank)
ll the resistance readings are beyond the range. replace
the fuel gauge sending unit
Float PositionE1t2F
Resistance (0)105 - 10829.5 - 35.53.5-5
Jaoan-Ploduced (Wire-wound typel:
Float PositionE1/2F
Resistance (O)105 - 11025.5 - 39.5
Low Fuel Indicator Light Test
NOTE: For the low fuel indicator circuit diagram, refer to
the gauge assembly circuit diagram (see page 23'2311.
1. Check the No. 25 (7 5 A) luse in the driver's under
dash fuse/relay box before testing
2. Park the vehicle on level ground.
3.
4.
Drain the luel into an approved container. Reinstall
the fueltank drain bolt with a new washer.
Add less than 4L (1 1 U.S Gal, 0.9 lmp Gal) of fuel,
and turn the ignition switch ON (ll). The low fuel
indicator light should come on within four minutes'
. lf the light comes on within four minutes, go to
step 8.
. lf the light does not come on within four min-
utes, go to step 5.
Remove the access panel lrom the Iloor'
Turn the ignition switch OFF, then disconnect the
fuel tank sending unit 3P connector.
Connect the fuel tank sending unit 3P terminals No'
1 and No. 3 with a jumPer wire
. lf the light comes on, replace the fuel gauge
sending unit (see Page 23 1421
. lf the light does not come on, check for:
- An open in the GRN/YEL wire between the
fuel gauge sending unit and the fuel gauge
- A blown bulb.- A poor ground (G552)
6.
1.
female terminals
8. Add 4L {1.1 U.S. Gal, 0 9 lmp Gal) of fuel The light
should go off within four minutes.
23-143

Contents
How to Use This Manual ICircuit Schematics (see Circuit Index)Fuse/Relaylnformation 6Ground-to-Componentslndex 6-6ComponentLocationPhotooraohs 201Conriector Views 202
Circuit Index
Accessory power socket 155Air conditionerAir delivery'96198 models 61'99-'00 models 61-2Blower controls'96198 models 60'99100 models 60-1Compressor controls 62Fans 63Anti-lock brake system (ABS) 44A/T gear position indicatorCVT 89All except CVT 89-1Automatic transmission controlsAll '96-'98 models except CVT and GX 39All '99100 models except CVT 39-8All GX models 39-8'96-'98 CVT 39-4'99100 cw 39-12Back-up lightsCoupe and Sedan 110Hatchback l'10-1Brake lightsAll Coupes and'96-'98 Sedans 110-15'99-'00 Sedans 110-16Hatchback 110-17Brake system indicator light'96198 models 7'1'99100 models 71-1Ceiling light 114-3Charging system 22Condenser fan 63Console lights 114Cruise control 34Dash lights 114Daytime running lights 110- 13Engine coolant temperature gauge 81-1Fog lights 110-10Front parking lights 110-2Fuel gauge 81-1Fuse/relay boxUnder-dash 6Under-hood 6-4Underhood ABS 6-3Gauges 81Ground distribution 14Ground-to-Componentslndex 6-6Hazard warning lightsAll except '99100 Sedans 110-6'99100 Sedans 110-8Headlights 110-12Headlight switch 100Heater - See Air ConditionerHorn'96197 models 40'98 model 40-1'99100 models 40-2lgnition key reminder 73lgnition systemAll '96198 models except Dl685 20All '99100 models except D16Y5 with Mn 2O-2All D1685 engines 20-2'99-'00 D 16Y5 with M/T 20
lndicators 80Integrated control unit 70lnterlock systemAll except'96J98 CVT 138'96198CVT 138-1License plate lightsAll Coupes and '96-'98 Sedans I l0-3'99100 Sedans 1 10-4Hatchback 110-5Low fuel indicator light 74Moonrool'96197 models |22'98-'00 models 122-1Odometer 81Oil pressure indicator light 80-3Power distributionBattery to ignition switch, fuses, and relaysFuses to relays and components 10-2Power door locksAll models without keyless entry 130'96-'98 models with keyless entry 130-2'99100 models with keyless entry 130-12Power mirrorsWithout detogger 141With defogger '141-2
Power windows 120Programmed fuel injection system (PGNr-Fl)All '96-98 models except D1685 23All '99-'00 models except D16Y5with M/T and D1685 24All D1685 engines 25'99100 D16Y5 with M/T 23Radiator fan 63Rear window defogger'96-,98 models 64'99100 models 64-1Seat belt reminder 73Security system'96.'98 USA HX, LX, EX 133'96-'98 Canada EX, Si 133'99TOO USA HX, LX, EX, DX.V Si 133-4'99100 Canada EX, Si 133-4All CX and DX models 133-8Speedometer 81Starting systemA./T (All except Dl685) 21A"/r (D16Bs) 21-1Manualtransmission 21-2Slereo sound system 150Supplemental rastraint system (SRS) 47Tachometer 81TailliqhtsAllboupes and'96-'98 Sedans 110-3'99100 Sedans 1 10-4Hatchback 110-5Trunk light 114-3Turn signal lightsAll except'99100 Sedans 110-6'99-'00 Sedans 1 10-8Vehicle speed sensor (VSS) 33Wiper/washerFront 91Rear 92
10

How To Use This Manual
The next few pages describe how this manual is organized. They also
explain what kind of information the manual contains, what that
informalion means, and how to use it to troubleshoot electrical problems.
Circuit schematics break the entire electrical system into individual
systems, like the Low Fuel lndicator Light on the nelit page.
Only electrical components that work together are shown together,
so you won't be distracted by unrelated wires.
Explanations of the abbreviations and svmbols used in the schematics
begin on page [Fl. You'll need to know what they mean before you can use
a schematic effectively.

How To Use This Manual
Circuit Schematics
oa
Each schematic represents one circult. A
circuit's wires and components are arranged
to show current flow, from power at the top of
the page, to ground, at the bottom.
Shared Circuits
Other circuits may share power or ground
terminals or wiring with the circuit shown. A
wire that connects one circuit to another, for
example, is cut short and has an arrowhead
at the end of it pointing in the direction of
current flow. Nelit to the anowhead is the
name o{ the circuil or comoonent which
shares that wiring. To quickly check shared
wiring, check the operation of a component it
serves. lf that component works, you know
the shared wiring is OK.
Connectors
All in-line and fuse box connectors are
numbered (C725, C416, etc.).
Component connectors are not numbered
but are identiJied by the name of the
component. lf a componenl has more than
one connector, each connector is assigned
a letter (A, B, C, etc.). Below most connector
numbers and comDonent names are
PHOTO and VIEW numbers. The PHOTO
number refers to a Dhoto in the back of the
book that shows lhe conneclor's location on
the car. The VIEW number refers to an
illustration in the back of the book that
shows the connector face, wire colors,
connector cavity numbers, and other details.
The connector cavity numbering sequence
begins at the top left corner oJ the connector
as seen from either of the viewooints shown
on page ffl . Disregard any numbers
molded into the connector housino.
Wires
Wires are identilied by the abbreviated
names of their colors; the second color rs the
color of the stripe. Wires are also identified by
their location in a connector. The number '2"
next to the male and female wire terminals at
C416, for example, means those terminals
join in cavity 2 of connector C416.
Symbols
A complete description of schematic
symbols begins on page | 8
"HOT" label tells you whenthe ignition switch suppliespower to the fuse. \
Artowhead meanswire connects toanother circuit;
Arrow with note rErngother circuils conncct h€re.
it .a
llu":: ^,{ ii t See Power Distribution, .I t----t oaqe tO-3. IL*--:--------J2 Y C723 Junction connectorYEL I Pao'o'8 more bus bars in it;
I - " " to two or more wire
l,/
-t>?
See PowerDistribution,page 10-3.
UNDER.DASHFUSE/RELAYBOX
has one oleach connactgterminala.
it ooints in directionof current flow.
TheImletor
t_I
Cavity number; L ---
Jiili'iJi!--' -----> '
shoin on page S .
Maleterminal
L?*?l?,-
"'"'I
c725
vlEUt/ 75
Connector number;index begins onpage 203.
Number ot photoin back ol bookshowing componentlocation on cat.
Number ofconneclor viewin back of book
7
GBN/FEO
See Ground
Soe Indicators I ASSEMBLY
:-------J
LOW FUELINDICATOFLIGHT r-l
EI
A
"o'r"/PHOTO 52 <-
\
FUELTANKUNIT
Splice ---------) O rr ".* I Page 14'4'
IBroken wire means | --^ -
iar";J.'It,;,rJ;ii; -----i Bffi,Bili*l
elsewhere. I 0a0e tn-a
IBrK Icround --->lL c301: ptioro 21