1999 HONDA CIVIC horn

Horn
Component Location Index
SRS components are located in this area. Review the SRS component locations, precautions, and procedures in the SRS
section (24) before performing repairs or service.
CABLE REELReplacement, section 24
(:-, ,,/ t.\
(6\'
\K2
HORN RELAY: '98 - 00 models-
lWire colorsr WHT/GRN, cBY,lIWHT/GRN, BLU/RED ]Test, page 23 87
HORN RELAY: '96 -97 models-lwire colors: WHT/GRN. GBY,I
IWHT/GRN, BLU/RED ITest, page 23-86
UNDER-DASH FUSE/RELAY BOX
23-196

Circuit Diagram: '96 - 97 models
HORNRELAY
WHT/GRN
I(H)HoRN
Y
IBLU/REO
I
I
IBtK
I
t-l
G40lG1A2
BATTERY
l-
23-197
Horn Test: '96 - 97 models
1. Remove the front bumper (see section 20).
2. Disconnect the 2P connector from the horn.
Remove the horn.
Test the horn by connecting battery power to one
terminal and grounding the other, lf the horn fails to
sound, replace it.
3.
LOW HORN

Horn
Circuit Diagram: '98 - 00 models
HCRI]tEtA'a
BATTEFY
1 '98 model: WHT/GRN'99 - 00 modelsr BLU/RED
23494
Horn Test: '98 - 00 models
'1. Remove the f.ont bumper (see section 20).
2. Disconnect the 1P connector from the horn.
TERMINAL
Test the horn by connecting
termina I and grounding the
horn fails to sound, replace it.
battery power to the
mou nting bolt. lf the

Switch Test
lMake sure you have the anti-theft code for the
radio, then write down the frequencies for the
radio's preset buttons ('99 - 00 models).
Disconnect the battery negative cable, then disconnect
the positive cable, and wait at least three minutes.
Disconnect the driver's airbag connector (see sec-
tion 24).
Remove the driver's dashboard lower cover (see
section 20).
Disconnect the cable reel sub-harness 3P connector
from the main wire harness.
2.
3.
4.
5.
1.
MAIN WIREHARNESS3P CONNECTOR
SUB-HABNESS3P CONNECTOR
REEL
6.
Terminalside olmale terminals
Check for continuity between the No. 2 terminal of
the cable reel sub-harness and body ground with
the horn switch pressed.
alf there is continuity, the horn switch is OK.
lf there is no continuity, go to step 6l-
-\
1.
8.
10.
'I 1.
9.
Remove the driver's airbag assembly (see section
24), then disconnect the horn connector from the
steering wheel.
Check for continuity between the No. 2 terminal of
the cable reel sub-harness 3P connector and horn
positive terminal.
lf there is no continuity, replace the cable reel
(see section 24).
lf there is continuity, repair or replace the horn
swtlcn,
lf all tests prove OK, reinstall the driver's airbag
assembly (see section 24), and reconnect the cable
reel sub-harness connector.
Reconnect the driver's airbag connector, and rein-
stall the access panel on the steering wheel.
Reconnect the battery positive cable, then the negative
termtnar.
After installing the airbag assembly, confirm proper
system operation:
12.
Turn the ignition switch ON (ll); the SRS indica-
tor light should come on for about six seconds
and then go off.
Make sure both horn buttons work.
13. Enter the anti-theft code for the radio, then enter the
customer's radio station presets ('99 - 00 models).
HORN CONNECTOR
23-199

Circuit Diagram
N0.30 (7.5A)
f/
IREO/BtX
WNT/BLK +WNT
BLU/RED
VHORN
IJ,
JRN,/WH
VgRAKELGHTS
UNDER.HOOD FUSEi RELAY 8OXUNDEB.OASH FUSARELAY BOX
GRY + BLUiGRN
GAUGEASSEMBLY
CBUISECONTROLACTUATOR
N0.41 (80A) N0.42 {40A)
INOICATORLIGHT(0.84rY)
lPIO SET
lo
I Q suue
tGNlTtoN swlrcH
l-t* : 99 00 models wlli A/T
23-241

)
CavityWireTest conditionTest: Desired resultPossible cause if result is not obtained
BRNA/VHTUnder all conditionsCheck for resistance to ground:
There should be 80 - 120 O.
Fau lty actuator solenoid
Poor ground (G202)
An open in the wire
1BRNUnder all conditionsCheck for resistance to ground:
There should be 40 - 60 0.
11BRN/BLKUnder all conditionsCheck for resistance to ground:
There should be 70 - 110 0.
2GRY
lgn jtion switch ON (ll),
main switch ON and
brake pedal pushed,
then released
Check for voltage to ground:
There should be 0 V with the Pedal
pushed and battery voltage with
the pedal released.
'Faulty brake switch
. An open In the wlre
3BLKU nderall conditionsCheck for continuitY to groundl
There should be continuity
' Poor ground (G401, G402)
. An open in the wire
5GRNA,A/HT
Brake pedal pushed,
then released
Check for voltage to groundl
There should be batterY voltage
with the Pedal Pushed. and 0 V
with the pedal released
. Blown No. 52 (15 A) fuse in the
under-hood fuse/relaY box
. Faulty brake switch. An open in the wire
LT GRN/
RED
Set button pushedCheck for voltage to ground:
There should be batterY voltage.
Blown No. 52 (15 A) fuse in the
under-hood fuse/relaY box
Faulty horn relay
Faulty sevresume switch
Faulty cable reel
An open in the wire7LT GRN/
BLK
Resume button Pushed
10RED/BLU
lgnition switch ON (ll)Attach to ground:
Cruise indicator light in the gauge
assembly should come on.
Blown bulb
Blown No. 25 (7.5 A) fuse in the
under dash fuse/relay box
Faulty dimming circuit in the
gauge assemDly
An open in the wire
BLU,A/VHT
lgnition switch ON (ll)
and main swilch ON;
raise the front of the
car, and rotate one
wheel slowly with the
other wheel blocked.
Check for voltage between the
BLUMHT @ and BLK O terminals:
There should be 0- 5 V or more
-0- 5 V or more repeatedlY
. Faulty vehicle speed sensor {VSS)
. An open in the wire
LT GRN
lgnition switch ON (ll)
and main switch ON
Check for voltage to ground:
There should be batterY voltage.
Blown No. 14 (7.5 A)fuse in the
under-dash luse/relaY box
Faulty main switch
An open in the wire
14PNK
A,T: Shift lever in E,
ojorE
M/T: Clutch pedal
released
Check for continuity to ground:
There should be continuity.
NOTE: There should be no conti-
nuity when the clutch Pedal is
depressed or when the shift lever
is in other positions.
Faulty A/f gear position switch
Faulty or misadjusted clutch
switch (M/T)
Poor ground (G401, G402)
An open in the wire
BLU/GRN
Under all conditionsCheck for continuity between No. I
terminal and No. 5 terminal of the
PCM connector A.
There should be continuity
. An open in the wire
*: '99 - 00 models with A,/Tl-,
23-243

Power Door Locks
Component Location Index
NOTE (With keyless entry systeml:
. It 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'
. when vou unlock the doors with the transmitter, the ceiling light (middle position) comes on for 30 seconds. (However,
if the audio unit is not installed, the light does not come on )
. lf any door is open, you cannot lock or unlockthe doors with the transmitter'
. The horn sounds only the first time you press a transmitter button. (Pressing repeatedly does not activate the horn
again.)
o lf vou unlocked the doors with the transmitter, 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
. lf you press the PANIC button for more than two seconds, the horn sounds for about 30 seconds, and the transm'fer
LED comes on. (The panic mode will not be activated iJ the ignition key is in the ignition switch ) The panic mode is
cancelled by pressing any of the transmitter buttons'
o After replacing the transmitter battery, press the lock and unlock buttons five or six times to activate the transmitter'
Replacement, section 20
FRONT PASSENGER'S DOOR LOCK ACTUATOR
RIGHT REAR DOOR LOCK ACTUATOR
Test, page 23-263
I.IFT REAR DOOR LOCK ACTUATOR
Test, page 23 263Replacement, section 20
LOCK ACTUATORTest, page 23-263Replacement, section 20
ORIVER'S DOOR LOCK SWITCH
Test, page 23'262
DOOR L@XCONTROL UN]TInput Test, page 23 255
23-251
Test, page 23-263Replacement, section 20
AUDIO UNIT(STER€O RADIO TUNER)
{'96 - 98 models)
lHas built-in keylessl
eceiver circuit IReplacement, page 23-189
Input Test, page 23-260
Terminals, page 23-262
KEYLESS DOOR LOCKCONTROL UNIT l'99 - 00 modelsl
Input Test, Page 23-257
l-l
TRANSMITTER99 - 0O transmitter shown;'96 -98 transmifter
also has an OPTION buttonTest, page 23-264Transmitter Programming, page 23_265
Qi,,a/
/----
L(ru
i'.-8,-'l
/'-'6

I
Reconnect the 18P connector to the power door lock control unit
Cavitv Wire Test condition Tost: Desired resultPossible cause it r€sult is not obisinod
23-261
l-l
'10GRNA/VHTDriver's door lock
switch in LOCK
Check for voltage to groundl
There should be 1 V or less.
. Faulty driver's door lock switch. Poor grou nd (G551)
. An open in the wire
9GRN/ORNDriver's door lock
swirch in UNLOCK
2BLU,ryVHT
Driver's door lock knob
in LOCK
Check for voltage to ground:
There should be 1 V or less.
Faulty driver's door lock actuator
Poor ground {G551)
An open in the wire
3BLU/RED
lgnition key inserted
into the ignition key
swttcn
Check for voltage to groundl
There should be 1 V or less
Check for voltage to ground:
There should be 4 V or more
Ch."k f"r ".lt"r" t. g|'"r^d
There should be banery vollage
Poor ground (G401, G402)
Faulty ignition key switch
An open in the wire
Shon in the wire
A o*n tto gO ,i5 A' fr." in tf'"
Lrnder hood fuse/relay box
Faulty combination light switch
An open in the wire
lgnition key removed
from the ignition key
swtrcn
RED/BLK
Combination light
switch in " :m: "
position
LT GRN/
RED
Each door open, one at
a trme
Check tor voltage to ground:
There should be 1 V or less.
Faulty door swilch
An open in the wire
GRY
U nder all conditionsBlown No. 52 (15 Al fuse in the
under hood fuse/relay box
Faulty horn
Fau lty horn relay
An open in the wire
Connect to ground:
Horn should sound.