Gauges HONDA CIVIC 1999 6.G User Guide

How To Use This Manual
Symbols
oo
Wire Color Abbreviations
The following abbreviations are used to
identify wire colors in the circuit schematics:
BLK.... .........b|ack
BLU.... ......... blue
BRN.... ,....... brown
GRN.... ........ green
GRY.... ......,.. gray
LTBLU . .....lightbtue
LTGRN. ....lightgreen
ORN.... ....... orange
PNK .... .......,.. pink
PUR .... ........ purple
RED .... .......... red
WHT... .........white
YEL .... ........ yellow
A broken line means this part of the circuit
is not shown; refer to the circuit listed for
the complete schematic.
"ral
o
-.1
See GroundDistribution,page 141.
I G101
Where separate wires
join, only the splice is
shown; for details on
the additional wiring,
refer to the circuits
listed.ili::i
{[
UNDER-OASHFUSE/RELAYBOX
Wires
A wavy line at the end of
a wire means lhe wire is
broken by the binding of
the book or by a "choice"
bracket but continues on
the next page.
Wire insulation can be
one color, or one color
with another color stripe.
(The second color is
the stripe.)
This circuit continues on
another page. (The arrow
shows direction o{ current
flow.) To tollow the RED/
BLK wire in this example,
you would turn to page 23-5
and look for the "2" anow.
This means the branch of the
wire connects to another
circuit. The arrow Doints to the
name of the circuit branch
where the wire continues.
8LK-Cruise Control, €aaaGauges, Indrcalors
!YEUsLK
Ttl
Wire choices for options or
different models are labeled
and shown with a "choice"
bracket like this.
This broken line means
both terminals are in
connector C134.
a.
+##l:i""lManuallransmission
ryil;::,
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:-lName of Circuit

Connectors - "C"
The cavities (and wire terminals) in each
connector are numbered starting from the
upper left, looking at the male terminals trom
the terminal side (or looking at the female
lerminals f rom the wire side. Both views are in
the same direction so the numbers are the
same.) All actual cavities are numbered, even
if they have no wire terminals in them.
Terminal SldeolMale Tsrminals
{
T
_A
Wlre SldeotFemalg Trrmlnala
The connector cavity number is listed next to
each terminal on the circuit schematic. The
cavity/terminal shown below is #6.
Terminal
This means the connector
connects directly to the
componenr.
This means the connector
connects to a lead (pigtail)
wired directly to the
component.
Cavlty/Termlnsl 6
only the one affecting that
ciriuit will be shown. The f
--f
!!*!"*F"#fi5';,Hy4
I
Remaining wires to
the same bus are
represented by a
broken line.
The name of the
component appears next
to its upper right corner
followed by notes about
its function.
This symbol represents
one bus inside the cao of a
iunction connector. A \
lr"ctb. connectorcap |contains several buses, but Ac103
tl
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a---a---a--- a--- o -a
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See Gauges
Splices
Solices are shown as a dot. Their location
and the number of wires may vary
depending on the harness manufacturer.
Components
A solid border line means the
entire component is shown.
A broken border line indicales
that only part of the component
is shown.
t_J
ll
ll
BRAXEswtTcHClosed wilhpedaldepressed.

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snsIXDICATORLIG}IT
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GAUGEASSEMBLYPHOIO 67vlEw 71=[ =
See ABS
*l =
See sRs
c507(Termlnals 1.6)
vlEw 56
BLU/NED
S€
==:
Groufte 14-7.Distribtltion,Ground,14-7.S€e (page
(cont'd)
80-1
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- G4o1PHOIO 57

Gauges
#'t----lllgi' i i-r-; ffiffig'i
;;;;6;;- -
ild;$ i fr{li,l[i
1 OTSTR|BUTOR r--- --.-^'l POWERTRATN
![ElF{, I i:tirtiifffii* I ":"+J (pclrrorEcM)
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..-:i:I1;,,?--.,
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! v,ersoI -!'Yv , I :"
c442
#* i ;[. r;{ 11;:#r i :;l i1[---- 11 :ff:*"'"'
'i" f+Taj i!!3lo_rrr."
SeeIndicators---{
rAcnoMErER i
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It, fri;J,, :,
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L__j;,#39'n.',
S€€ GroundOistribution,page 1+7.
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SPEEDOMElER

Gauges (cont'd)
- How the Gircuit Works
When the ignition switch is in ON (ll) or START (lll),
battery voltage is supplied through fuse 25 to the
gauges in the gauge assembly.
Speedometer and Odometer
The odometer and soeedometer drive circuits
receive pulses from the vehicle speed sensor
(VSS). The pulse rate increases as the car
accelerates. The frequency and duration of these
input pulses are measured and displayed by the
speedometer, odometer and tripmeter.
Tachometer
The tachometer drive circuit receives pulses from
the ignition control module (lCM) in the distributor
assembly or the ECM/PCM. The solid-state
lachometer then displays these pulses as engine
speed. For each 200 pulses per minute from the
ignition control modul€ (lCM) or the ECM/PCM, the
tachometer displays 100 RPM.
Engine Coolant Temperature Gauge
The engine coolant temperature gauge has two
intersecting coils wound around a permanent
magnet rotor. Voltage applied to the coils, through
fuse 25, generates a magnetic lield. The magnetic
field, controlled by the coolant temperature sending
unit, causes the rotor to rotate and the gauge
needle to move. As the resistance in the sending
unit varies, current through the gauge coils
changes. The gauge needle moves toward the coil
with the strongest magnetic field.
The 6ngine coolant temperature sending unit's
resistance varies from about 137 ohms at low
engine temperature to between 3H6 ohms at high
temperature (radiator fan running).
Refer to the Service Manual (Section 23, Electrical)
for specific tests or troubleshooting procedures.
81-2
(
Fuel Gauge (All except cX)
The fuel gauge has two intersecting coils wound
around a permanent magnet rotor. Voltage applied
to the coils, through tuse 25, generates a magnetic
field. The magnetic field, controlled by the fuel
gauge sending unit, causes the rotor to rotate and
the gauge needle to move. As the resislance in the
sending unit varies, current through the gauge coils
changes. The gauge needle moves toward the coil
with the strongest magnetic field.
The fuel gauge sending unit's resistance varies
from about 2-5 ohms at full, to about 110 ohms at
empty. When you turn the ignition switch off, the
gauge remains at the last reading until you turn the
ignition switch to ON (ll) or START (lll) again,
Refer to the Service Manual (Section 23, Electrical)
for specific tests or troubleshooting procedures.
Fuel Gauge (GX)
The fuel gauge has two intersecting coils wound
around a permanent magnet rotor. Voltage applied
to the coils, through fuse 25, generates a magnetic
field. The magnetic field, controlled by the PCM,
causes the rotor to rotate and the gauge needle to
move. The PCM calculates the gas quantity in the
fuel tank by using the fuel pressure value detected
by the tuel tank pressure sensor and the fuel
temperature value detected by the fuel tank
temperalure sensor, and outputs the signal to the
gauge assembly. The gauge needle moves toward
the coil with the strongest magnetic field.
When you turn the ignition switch off , the gauge
remains at the last reading until you turn the ignition
switch to ON (ll) or START (lll) again. When the
PCM detects a malfunction with the fuel pressure or
temperature, or detects a gas leak, the PCM
reduces the fuel meter to 0.
Refer to the Service Manual GX Supplement
(Section 11 , Fuel and Emissions) for specific tests
or troubleshooting procedures.
a
a

-25. CW Transmission Solenoid
- Gray- Lower front of transmission- On engine wire harness
1
2 GRNAVHT (H LC LS +)
3 BLUAVHT (SH LS +)
4 YEL (SC LS +)
5
6
7
8
GRN/BLK (SOL IN H)
PNK/BLK (HLC LS _)
GRN|VEL (SH LS -)
PNK/BLU (SC LS _)
26. Interlock Control Unit
- Gray- Behind left side oJ dash, right of steering column- On main wire harness
1
7
2
3
4
WHT/BLU (Key interlocksolenoid control)
YEL (lgnition input)
YEUBLK (Shift locksolenoid control)
BLK (G401)
WHT (Key
interlock switch input)
BLKBLU (Park lnput)
WHT/RED (Shinlock circuit control)
WHI/BLK(Park pln switch input)
6
7
27. C352
- Gray- On bottom of under-hood {use/relay box- On main wire harness
1
789
I
1
2
3
4
GRN (Fans)
BLUAVHT (fuC
compressor controlS)
WHT/BLK(Hazard warning lights)
WHT/BLK (Fuse 42)
BLKRED (A/Ccompressor clutchrelay control)
BLK,/YEL (Fuse 17)
WHT/GRN (Fuse 52)
WHT (Fuse 48)
6
7
8
I
28. C101
- Gtay- Left rear of engine compartment- Connecls engine wire harness to main wire harness
1 l\,4ale - BLK/YELFemale - BLK,ryVHT(Fuse 15)
2 BLK (G101)
3 YEURED (Oilpressure indicator light)
4 *1/*4: BRN/BLK (G101)
5 YEUBLK (PGI\4,FD
6 WHT/BLU(Charging system)
7 YEL/GRN (Gauges)
I *1: BLU (lgnition
sYstem)
9 Male - BLK VHTFemale - BLKRED(Slarting system)
10 *2: BLKryEL(lgnition system)*3: Male - BLK/YELFemale - RED(lgnition system)
*1= 96-'98 models: All'99: D16Y5 with M,iT*2= '96-'97 models: All'98-'99 modelsr GX*3= '96-'98 models: All except GX*4=: '98''00 Models: GX
202-7

Gonnector Views (conrd)
46. C503
B
9
*1: GBN/ORN(Power door locks)*1r BLU|/EL(Power door locks)
GRN/RED (Brake
system indicator light)*1r LT GRN(Power door locks)*3: GRN/YEL (Lowfuel indicator light)
BLU/BLK (lndicators)*3: BLU/YEL(Stereo sound system)*3: YEUBLK (Gauges)*3: GRY/WHT(Stereo sound system)
10 *1: GRNAVHT(Power door locks)*2: BL(BLU(Power mirfors)
11 *3: BRNMHT(Stereo sound system)
12 *3: RED/YEL(Stereo sound system)
13 GRY/BLK(Stereo sound system)
14 BLU(Stereo sound system)
15 BRN/BLK(Stereo sound system)
16 RED/GBN(Stereo sound system)
- Blue- lvlounted to side of under-dash fuse/relay box- Connects floor wire harness to dashboardwtre narness
1
2
3
5
6
7
*1= '96-'98 models*2: '99-'00 models*3= All except GX models
48. Data Link Connector (DLC)
- Gray- Below left side of dash, above kick panel- On main wire harness
4
6 LT BLU (SRS)
7
8 WHT/BED(Battery input)
9
10
12 BLK (G401)
13 BLK (G401)
14
15 BLU/YEL(DLC inpuVoutput)
47. C551
- Green- On rear of under-dash tuse/relay box- On floor wire harness
1 BED/GRN (Brake
system indicator light)
2
4 BLI(BLU(Rear window defogger)
5 GBN/RED (Brake
system indicator llght)
6 *1: WHT/RED(Trunk light)
7
8 Hatchback: GBN(Rear wiper/washer)
9
10
11 GRN/YEL(Turn signal andhazard warning lights)
13 RED/BLK(Headlight switch)
14
15 GRN/RED(Turn signal andhazard warning lights)
202-14
*1= Allexcept GX models
49. C419
- Green- On rear of under-dash fuse/relay box- On main wire harness
1 '98''00 models: RED(lgnition system)
2 WHT/RED (Fuse s4)
3 Canada: WHT (Fuse 48)
4 BLI(RED(Starting system)
5 WHT (Fuse 48)
6 WHT/RED (Fuse 43)
7 1*: WHT(Security system)
I *2: BLK,TYEL
{Power door locks)
I Canada: YEL/BLK(Headlights)
1O YEURED(Back up lights)
11
13 WHT/GRN (Fuse 51)
14 '96-'98 CVT: BLKWHT(A/T controls)
15 Canada: GRN/RED(Headlights)
16 A/Ti YEL (lnterlock
system)
17 RED/BLK(Headlight switch)
18 Canada: RED/GRN(Headlights)
"1 = USA: LX, EX, HX, DX-V SiCanada: EX, Si12 = '99100 USA: LX, EX, HX, DX-V Si

Connector Views (cont'd)
54. c442
- White or Orange- Behind right kick panel- l\,lain wire harness junction connector
r---------Tr---------"1
1 BLU (lgnition systemor Gauges)
2 BLU (lgnition syslemor Gauges)
3 BLU (lgnition systemor Gauges)
4 BLU (lgnition system
L_ or causes)L_-:-:::'-'____Jt-----------1
11 GRN/WHT (PGM-FD
12 GRN/WHT(A/T controls)
13 GRNMHT (ABS)
14 GRNMHT
L_ lc,r'." .oIr"D_ _ _.jr----------_l
5
6
7L---------JT----------l8 GRN/RED (Brake
system indicator light)
9 GRN/RED (Brake
system indicator light)
10 GRN/RED (Brake
_ system indicator ligh0 -..1
| 15 BLUMHT (vSS) |I 16 BLUMHT (VSS) I
L T?_BLUSTrySS)--..]
l--------- - -l
| 18 BFN/BLK (G101) I| 19 BBN/BLK (G101) || 20 BRN/BLK (c101) |L---------J
Terminals groupedtogether are connectedby the same bus bar.
55. C501
- Green- On tront of under-dash tuse/relay box- On dashboard wire harness
l RED/GFN(Headlight switch)
2 *1 : BLKBLU (Fuse 16)
3 WHT/BLU(Charging systern)
4 BLK (G401)
5 GRNMHT(Turn signal lights)
6 GRN/RED(Turn signal lights)
7 GRN/ORN(Turn signal lights)
8 8LU/YEL(Rear w ndow delogger)
9 GFN/YEL(Turn signal lights)
'10 YEL (Fuse 25)
11 YEL/BLK(Turn signal lights)
12 BLKTYEL (Fuse 14)
13 YEUGRN (Accessorypower socket)
15 RED/BLK(Headlight switch)
1B BLK/WHT(Charglng system)
19 YEL/RED(Stereo sound system)
20
202-16
-1 =All e),cept GX
s6. c507
- White or Blue- Behind left side oJ dash- Dashboard wire harness junction connector
r --------'lT---------l
7 BED (Dash andconsole lights)
B BED (Dash andconsole lights)
I RED (Dash andconsole lights)
10 RFD (Dash andconsole lights)
11 RED/BLK (Dash
and console lights)
12 RED/8LK (Dash
and console lights)
13 RED/BLK {Dashand console lights)
14 RED/BLK (Dash
and console lights)
15 RED/BLK (Dash
and console lights)
16 RED/BLK (Dash
and console lights)L--------J
T--------T
L---_---_J
1 BLK (G401)
2 BLK (G401)
3 8LK {G401)4 8LK (G401)
5 BLK (G401)
6 8LK (G401)L________J
T--------"1
17 YEL (Fuse 25)
18 YEL (Fuse 25)
19 YEL (Fuse 25)
20 YEL (Fuse 25)L--------J
Term nals grouped together are connected by the same bus bat

Connector Views (cont'd)
60. c411
- Blue- Mounted to top ol under-dash fuse/relay box- Connects main wire harness to dashboard harness
'95198 Models excepl GXI
1 *1: RED/GRN(PGrvr-FD
2 A2: WHT(Security system)
(Security system)
4
5 BLU (SRS)
6 *2r GRY(Cruise control)
7 *2: BLU/RED(Security system)
8 RED/BLU(Cruise control)
9 LT GRN (Cruise control)
10 '96-97 models:BLU/YEL (ABS)
11 YEUGRN (Gauges)
12 RED (Dash andconsole lights)'13 LT GRN/RED(Ceiling light)
*1 = With shitt-up indicator
14 USA LX, EX, and HX:LT GRN/BLK
{Ceiling light)Except USA LX,EX and HX:ftrale - LT GRN/REDFemale - LT GRN/BLK(Ceiling light)
15 WHT/BLK(Hazard warning lights)
16 *2: RED|YEL(Security system)
17 *2: REDA/VHT(Security system)
18 WHT/BLU (Stereo
sound system)
19 BLU (lgnition system)
20 RED/BLU(Seat bett reminder)
21 GRN/OBN (PGN4 FD
22 BLUAVHT (VSS)
23 YEURED (Oil pressure
indicator system)
24 BLU/RED (ABS)
USA: LX: EX, HXCanadar EX, Si
202-20
'98 GX and All '99-'00 Models:
1
2
4 All except GX: BLU/YEL(Rear window defogger)
5 BLU (SRS)
7
B RED/BLU(Cruise control)
9 LT GRN {Cruise control)
10 *1: PNK (lnd cators)GX: BLU/YEL (Bear
window defo9ger)
1l YEL/GBN (Gauges)
12 RED (Dash andconsole lights)
13 *2: Male - LT GRN/REDFemale - Not used(Ceiling light)
14
15 WHT/BLK(Hazard warning lights)
18 WHT/BLU(Stereo sound system)
19 BLU (lgnition systemano gaugesl
20 RED/BLU(Seat bell reminder)
21 GRN/ORN (PG[,4-Fl)
22 BLU,ryVHT O/SS)23 YEURED(Oil pressure indicator)
24 BLU/RED (ABS)
*1 = Allexcept CW and GX*2= All except GX

)\
) -,
.'
'1: With shift-up indicator or cruise control system ('96-'97 models)
With cruise control system ('98-'00 models)
.2: '96198 models.3: '99-'00 models
c5o9 csrr c510 c515
13 1c517
DISHAOABD w|REIIARNESS
Connector
or
Terminal
Number of
Cavities/
Color
LocationConnects toNotes
Dashboard Wire Harness
c410
c411
c501
c503
TJJUC
UCUO
(Jcu/
c508
cs09
c510
tJctl
c512
uc t.t
c514
c515
c516
c518
c520
12-GRY
24-BLU
2O.GRN
16-BLU
5-GRY
3-GRY
2O-WHT
or BLU
5-YEL
5-GRN
14.GRN
16.8LU
13-BLU
1O-GRY
5-N/A
16-GRN
20-N/A
22.GRN
16-GRY
5.N/A
2-BLK
5-ORN
Above under-dash fuse/relay box
Above under-dash fuse/relay box
Front of under-dash fuse/relay box
Below under-dash fuse/relay box
Left of steering wheel
Left of steering wheel
Below gauges
Left side of dash
Lett side of dash
Left side of dash
Lefl side of dash
Left side of dash
Center ot dash
Csnter of dash
Behind middle of dash
Behind middle ol dash
Behind middle of dash
Behind middle of dash
Behind middle of dash
Behind middle of dash
Left side of dash
Main wire harness
Main wire harness
Underdash fuse/relay box
Floor wire harness
Cruise main switch
Dash lights brightness controller
Junction connector
Gauge assembly connector F
Gauge assembly connector E
Gauge assembly connector A
Gauge assembly connector B
Gauge assembly connector C
Hazard warning switch
Rear window defogger switch
Audio unit connector B (Keyless
receiver circuit)
Audio unil
Security control unit
Audio unit connector A
Security LED connector
Accessory power outlet
Gauge assembly connector D
Afi
SRS.1
AN
.2
-2
Optional-2
.2
Optional("2 Canada)
ABS
G501Under middle of dashBody ground, via dashboard wire
narness
203-27