key HONDA CIVIC 1999 6.G Service Manual

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l-l
Disconnect the A and B connectors from the audio unit.
Cavity WireTest conditionTest: Desired resultPossible cause if result is not obtained
Reconnect the B connector only to the audio unit.
Cavity WireTest conditionTest: Desired resultPossible cause iI result is not obtained
B9GRN/ORN
Driver's door lock
switch in UNLOCK
Check for voltage to ground:
There should be 1 V or less.
. Poor ground 1G551). Faulty driver's door lock switch. An open in the wire. Short in the wireDriver's door lock
switch in LOCK
Check for voltage to grou nd:
There should be 4 V or more.
810G R NAr'r'HT
Driver's door lock
switch in UNLOCK
Check for voltage to ground:
There should be 4 V or more.
. Poor ground (G551)
. Faulty driver's door lock switch. An open in the wire. Shon in the wireDriver's door lock
switch in LOCK
Check lor voltage to ground:
There should be I V or less.
23-263
A4WHT/BLU
LJnder all conditionsCheck {or voltage to ground:
There should be battery voltage.
. Blown No. 47 (7.5 A) tuse in the
under hood fuse,i relay box. An open n the w re
A5YEL/RED
lg nition swirch ACC (l)Check for voltage to ground:
There should be battery voltage.
Blown No. 28 , I0 A) f use in the
under dash fuse.elay box
An open " :ne n re
Check for voltage to ground:
There should be battery voltage.
Check for continuity to groundr
There should be continuity.
B o$. \. '.1 - 5 A' iuse n the
,,^oe' aas_'-se relay box
A_ ooe^ ' :ne wrre
Pc.' E'o--d rG401, G402)
A- ooen n lhe wire
B6B LK,/YE L
lgnition switch ON0l)
8158LK
Under all conditions
B1BLU/RED
lgnition key inserted
into the ignition key
swrtch
Check for voltage to ground:
There should be 1 V or less
Check for voltage to ground:
There should be 4 V or more
Poor ground (G401, G402)
Faulty ignition key switch
An open in the wire
Short in the wire
An open in the wireCheck for continuity berwee. lFe
audio unit 16P connector l-o 3ler-
minal and power door lock control
unit 12P connector No. 6 lermrnal:
There should be continu ty
lgnition key removed
from the ig nition key
swtlcn
B3B LUlt/E L
U nderall conditions
B8LT GRN/
BLK
Ceiling light switch in"middle position"
Connect to ground:
The ceiling lighr shouldcome on.
Blown No.43 (7.5 A) fuse in the
under-hood Iuse/relay box
Blown ceiling light bulb
Fau lty ceiling light
An open in the wire
814LT GRN/
RED
Each door open, one at
a time
Check tor voltage to ground:
There should be'l V or less.
. Faulty door switch. An open in the wire
Br6GRY
U nderall conditionsConnect to groundl
Horn should sound.
. Blown No. 52 ('15 A) fuse in the
under-hood fuse/relay box
. Fau lty horn. Faulty horn relay. An open in the wire

Power Door Locks
Audio Unit lKeyless Receiver
Circuitl Terminals ('96 - 98 modelsl
CavityWireDestination
16P CONNECTOR
B1BLU/REDlgnition key switch
*82LT GRNTrunk latch switch
Ft2BLU/YELUnlock (Driver's door)
B4BLUValet switch
*85LT BLUSecurity {lN)
B6BLK/YE LNo. 14 (7.5 A) fuse
*81ORNSecurity (D2)
B8LT GRN/BLKCeiling light
B9GRN/ORNUnlock (All doors)
810GRNA/VHTLock (OutPutl
*811BLU/WHTLED O
*812WHT/BLKSecurity (D0)
+B 13YEL/BLUSecurity (D'l )
814LT GRN/REDDoor switch
B15BLKG round (G401, G402)
o toGRYnorn
*: For security system (option)
23-264
Driver's Door Lock Switch Test
1. Remove the inner handle (see section 20).
2. Disconnect the 3P connector from the door lock
switch.
Check for continuity between the terminals in each
switch position according to the table.
DRIVER'SDOORLOCKswtTcH
Terminal
Position123
LOCKo-----o
OFF
UNLOCKo----o

Power Door Locks
Transmitter Test
NOTE:
. lf the doors unlock or lock with the transmitter, but
the LED on the transmitter does not come on, the
LED is faulty; replace the transmitter.
. lf any door is open, you cannot lock or unlock the
door with the transmitter.
. lf you unlocked the doors with thetransmitter, but do
not open any of the doors within 30 seconds, the
doors relock automatically.
. The doors do not lock or unlock with the transmitter
if the ignition key is inserted in the ignition switch.
1. Using a keyless entry checker (07MAJ - SP003001:
. Place the transmitter on the keyless entry check-
er, and press the transmitter button.
- lf the indicator light does not come on, check
for:- a dead or low batterv- Faulty transmitter- lf the ray indicator light comes on, the trans-
mitter is OK.
KEYLESS ENTRY CHECKER
INDICATOR LIGHT
TRANSMITTER
NOTE: After a transmitter battery has been
replaced, aim the transmitter at the receiver, and
press the transmitter button six times,
Confirm you can hear the sound of the door lock
actuators when vou press the si)dh time.
23-266

)
Transmitter Programming ('96 - 98 models)
Storing Transmitter Codes
. The codes of up to four transmitters can be stored in the control unit. {lf a {ifth code is stored, the code which was
stored tirst will be erased.)
. When the system enters the registration mode, all previously slored codes will be erased.
. The system leaves the registration mode and returns to the normal mode if you
- turn the valet swirch OFF, or
- turn the ignition switch OFF, or
- do not press the transmitter button for more than 10 seconds
Procedure:
NOTE: lt is important to maintain the time limits between steps
VALET SWITCH
NOTE: lf the tuner is turned ON, it willgo off and come on again when the reg-
istration procedure is completed-
l-l
NOTE: lf you want to register the codesof more than one transmitter, repeat step4 within 10 seconds with the next trans'mitter.
NOTE: After storing its code, make sure
the transmitter works properly bYrepeatedly pressing one ot its buttons.(The system starts to work when Youpress any transmitter button six times-)
TRANSMTITTER
23-267
--
Insert the ignition key into the
ignition swatch.Turn the ignit;on switch ON
flr).
Within 10 seconds, go to steP 3.
3. Press and hold the valet switchfor at least tive seconds.(You will hear the sound of theactuators turnang to UNLOCK.)
Within 10 seconds. go to step 4.
4. Press one of the transmitterbuttons,(You will hear the sound of theactuators turning to UNLOCK.i
AUDIO UNIT

Power Door Locks
Transmitter Programming ('99 - 00 modelsl
Storing transmitter codes;
The codes of up to three transmitters can be read into
the keyless receiver unit memory. (lf a fourth code is
stored, the code which was input first will be erased.)
NOTE: lt is important to maintain the time limits
between the steps.
'1. Turn the ignition switch ON (ll).
2. Within 1 to 4 sec., push the transmitter lock or unlock
button with the transmitter aimed at the vehicle.
3. Within I to 4 sec., turn the ignition switch OFF.
4. Within 1 to 4 sec., turn the ignition switch ON 1ll).
5. Within 1 to 4 sec., push the transmitter lock or
unlock button with the transmitter aimed at the
vehicle.
6. Within 1 to 4 sec., turn the ignition switch OFF.
7. Within 4 sec., turn the ignition switch ON (ll).
8. Within 1 to 4 sec., push the transmitter lock or
unlock button with the transmitter aimed at the
vehicle.
9.Within 1 to 4 sec., turn the ignition switch OFF.
Within 4 sec., turn the ignition switch ON (ll).
Within '1 to 4 sec., push the transmitter lock or
unlock button with the transmitter aimed at the
vehicle.
Confirm you can hear the sound of the door lock
acIuarors.
Within 8 sec., aim the transmitters (up to three)
whose codes you want to store at the receiver, and
press the transmitter lock or unlock buttons.
Contirm that you can hear the sound of the door
lock actuators after each transmitter code is stored.
Turn the ignition switch OFF, and pull out the key.
Confirm proper operation with the new code(s).
'10.
11.
12.
14.
23-268

Precautions/Procedu res
Steering-related Precautions
Stesring Wheel and Cable Reol Alignment
NOTE: To avoid misalignment of the steering wheel on
reassembly, make sure the wheels are turned straight
ahead before removing the steering wheel.
Rotate the cable reel clockwise until it stops.
Then rotate it counterclockwise {approximately two and
a half turns) until the arrow mark on the cable reel label
points straight up.
24-12
:l
St€€rin9 Column Removal
CAUTION:
. Eefore removing thg stggring column. disconnect the
connsstor bqtween the cable r€el and th€ SRS msin
harness.
. lf the stoering column is going to be romoved with-
out dismounting th6 stoering wheel, lock the steer-
ing by turning the ignition key to o-LOCK position, or
remove the key trom the ignition switch so that the
steering wheel will not turn.
NOTE:
When the airbag and cable reel are disconnected,
don't reconnect the battery cable. lf the battery is
reconnected and the ignition switch is turned ON (ll),
the SRS unit will store this as an open in the driver's
airbag inflator, and the SRS indicator light will come
on.
For disconnecting the spring-loaded lock type con-
nector, refer to page 24-'10.
SRS MAIN HARNESS2P CONNECTOR
Do not replace the original steering wheel with any other
design because it will make it impossible to properly
install the airbag (only use genuine Honda replacement
parts).
After reassembly, confirm the wheels are still turned
straight ahead and that the steering wheel spoke angle
is correct. lf minor spoke angle adjustment is necessary,
do so only by adjusting the tie-rods, not by removing
and repositioning the steering wheel.

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

Five-Step Troubleshooting
L Verify The Complaint
Turn on all the components in the problem
circuil lo check the accuracy of the customer
complaint. Note the symptoms. Do not begin
disassembly or testing until you have
narrowed down the problem area.
2. Analyze The Schematic
Look up the schematic for the problem
circuit. Determine how the circuit is
supposed to work by tracing the current
paths lrom the power source through the
circuit components to ground. Also, trace
circuits that share wiring with the problem
circuit. The names of circuits that share the
same fuse, ground, or switch, and so on, are
referred to in each circuit schematic. Try to
operate any shared circuits you didn't check
in step 1 . lt the shared circuits work, the
shared wiring is OK, and the cause must be
in the wiring used only by the problem
circuit. lf several circuits fail at the same
time, the fuse or ground is a likely cause.
Based on the symptoms and your
understanding of the circuit's operation,
identify one or more possible causes.
3. lsolate The Problem By Testing The Circuit
Make circuit tests to check the diagnosis
you made in step 2. Keep in mind that a
logical, simple procedure is the key to
efficient troubleshooting. Test for the most
likely cause of failure first. Try to make tests
at points that are easily accessible.
4. Fix The Problem
Once the specific problem is identified,
make the repair. Be sure to use proper tools
and safe procedures.
5. Make Sure The Circuit Works
Turn on all components in the repaired
circuit in all modes to make sure you've
fixed the entire problem. ll the problem was
a blown fuse, be sure to test all of the
circuits on that fuse. Make sure no new
problems turn up and the original problem
does not recur.
Test Equipment
Most circuits include solid-state devices.
Test the voltages in these circuits only with
a 1o-megaohm or higher impedance digital
mUltimeter. Never use a test light or analog
meter on circuits that contain solid-state
devices. Damage to the devices may result.
Test Light and DVOM
On circuits without solid-state devices, use a
test light to check for voltage. A test light is
made up of a 12 volt bulb with a pair of leads
attached. After grounding one lead, touch the
other lead to various points along the circuit
where voltage should be present. The bulb
will go on if there is voltage at the point being
tested. lf you need to know how much
voltage is present, use a digital
volVohmmeter (DVOM).
Self-Powered Test Light and DVOM
Use a self-powered test light to check for
continuity. This tool is made up of a light bulb,
battery, and tlvo leads. To test it, touch the
leads together: the light should go on.
Use a self-powered test light only on an
unoowered circuit. First, disconnect the
battery, or remove the fuse that feeds the
circuit you are working on. Select two points
in the circuit belween which you want to
check continuity. Connecl one lead of the
self-powered test light to each point. lf there
is continuity, the test light's circuit will be
completed, and the light will go on.
SELF-POWERED TEST LIGHT
lf, in addition, you need lo know exacW hc'.
much resistance there is between two oo'^=
use a digital volUohmmeter (DVOM)
acdrt'Cn
t1

Fuse
NumberAmpsPageFuse Name
(RR WIPER
RR WASHER)
i R HiL HIGH BEAM | 10
L H/L HIGH BEAM
| (PAIV RR-L)
i (P/vv RR-R)
(rGN CO|L)
10I (P,^/V AS)
Component or Circuit Protected
Not used
Not used
Rear wiper, Security system (option)
(Vehicles pre-wired for accessory security system)
'10r 1n-2
I
| 1 10-12i Right headlight, DRL control unit (Canada)
Lett headlight, DRL control unit (Canada)
I ro-rsSecurity system (option)
| 120-2 | Left rear window motor
Right rear window motor
lgnition coil ('98-'00 models except GX)
| 120-1 | Front passenger's window motor
i (PiW DH)| 20 1 12O I Driver's window motor
TURN LIGHTSHazard warning switch
FUEL PUMP
(SRS UNIT)
PGM-FI main relav, SRS unit
(cRUrsE CoNTROL)
/KtrVt trSS\
Stereo radio tuner ('96-'98 USA: LX, EX, and HX),
Cruise control main switch, Keyless door lock
control unit ('99-'00 models with keyless entry)
15ALTERNATOR
SP SENSOR
l-a10-4I ELD unit, Gauge assembly, TCM (96-'98 CW, PGM-FI
16I RR DEF RELAY7.510-8I Rear window defogger ('96-'98 models), ABS control
I unit. Power mirror switch ('99-'00 models except GX)
i-HEATER r/C
I RELAY
Power mirrors ('96-98 models and all GX models),
Air delivery, Blower controls, AilC compressor
controls, Fans
I (RUNNING LIGHT
I RELAY)
1 7.5 1
tl
I DRL control unit (Canada)
i BACK-UP LTGHTSi Back-up lights
(RUNNING LIGHT)DRL control unit (Canada)
I R H/L LOW BEAM'10 l11o-12Right headlight
I L H/L LOW BEAM | 101110-12 | Left headlight
(cont'd)
(SRS)SRS unit
6-1

Fuse
NumberFuse NameAmpsPage
BATTERY
Component or Circult Protected
Power distribution
lgnition switch
INTERIOR LIGHT | 7.5 | 10-10 | DLC, Ceiling light, Trunk light
FI E/M15 i(20 GX) i
i PGM-FI main relay, Fuel injection relay (GX)
Not used
POWER WINDOW| 10-10 | Power window relay
BACK UPStereo radio iuner ('9G'98 mod€ls), Audio unit ('99100
models), Heater control panel, PCM/ECM, TCM (9e'98
cvr)
HEADLIGHT
REAR DEFROSTER I
DOOR LOCK UNIT,
ROOF
i 10-12i Headlights
Not used
Rear window defogger relay
Power door lock control unit (all except '99-'00 models
with keyless), Keyless door lock control unit ('99-'00
models with keyless), Moonroof
i HORN, SrOP Lri 10-13i Horn relay, Brake switch
HAZARDHazard warning switch
OPTIONI 10-13I Security system (option)
i HEATER MOTOR Ii 10-1 i Blower motor relay
(CONDENSER FAN)
COOLING FANl1o-1
Condenser Jan relay, A'lC compressor clutch relay
Radiator tan relay
&5