1996 HONDA CIVIC keyless entry

a
Horn Does Not Sound In The Panic
Mode Or With The Transmitter "Beep"
Feature On
NOTE: The transmitter has a Beep On/Off feature.
Refer to page 130-4 for how to tum the beep on or
off.
1. Does the horn sound when the HORN button is
oressed?
Yes - Go to the next steD.
No - Repair the horn circuit.
2. Does the transmittor LED come on when any of
the buttons are pressed?
Yes - Go to the next step.
No - Check the transmitter battery then retest.
ll the beep feature still does not work, go
to the next steo.
3. Recheck with a known good transmitter
reprogrammed to the vehicle. Does the system
work properly in all modes?
Yes - Replace and program the transmitter,
then retest. Use the procedure on page
1 30-4 f or transmitter programming.
No - Go to the next step.
4. With the keyless entry harness connector (B)
disconnected from the radio, run a.iumper wire
f rom terminal 16 to ground.
Does the horn sound?
Yes - Reglace the radio.
No - Repair the open in the terminal 16 (GRY)
wire.
\
Horn Does Not Stop Sounding
1. ls the vehicle equipped with the optional security
system?
Yes - Go to the next step.
No - Go to step 3.
Do€s the horn stop sounding when the security
control unit connector is disconnected?
Yes - Replace the security control unit.
No- Go to the next step.
Does the horn stop sounding when the keyless
entry harness connector (B) is disconnected?
Yes - Reolace the radio.
No - Reoair the hom circuit.
130-11

Power Door Locks
- '99-'00 Models with Keyless Entry
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130-12

Power Door Locks (conrd)
- How the Circuit Works
Keyless Entry System
The keyless door locks combine the power door
locks with a remote key-fob transmitter. The keyless
door lock control unit receives direct inputs from the
ignition key switch, the passenger door switches,
and an indirect inDut from the driver's door switch
through the integrated control unit.
Power Door Locks
The power door lock system rs made up ot the
keyless door lock control unit, driver's door lock
switch, and individual door lock actuators. The
power door locks are controlled by the driver's door
lock switch and the driver's door lock actuator
switch.
Transmittel
The transmitter sends coded radio wave signals to
the keyless door lock conlrol unit when one of its
buttons is pressed. Each transmitter has a unique
code that must be 'laught" to the conlrol unit before
it can operate the door locks or any other function.
Up to 4 transmitters can be programmed to operate
the keyless door locks.
Door Locking
When you push the driveas door lock switch to the
lock position, ground is applied to the GRNMHT
wire to the keyless door lock control unit. The
control unit then applies battery voltage to the
WHT/RED wire and ground to the YEURED wire.
The passenger door lock actuators then activate to
lock the corresponding door locks.
When you lock the dnver's door with the key or door
lock knob, it is mechanically locked, and the driver's
door lock actuator switch applies ground to the
oower door lock control unit. The control unit then
applies battery voltage to the WHT/RED wire and
ground to the YEURED wire, activating the
passenger door lock actuators which lock the doors.
Door Locking with Transmitter
When you press the LOCK button on the remote
transmitter, the keyless door lock control unil applies
battery voltage to the WHT/RED wire and ground to
the YEURED wire. The passenger door lock
actuators then activate and lock the doors. A ground
signal is also applied to the BLU/RED wire to lock
the driver's door. lf any door is open, you cannot lock
it using the remote transmitter.
Door Unlocking
When you push the driver's power door lock switch
to the unlock position, ground is applied to the
GRN/ORN wire to the keyless door lock control unil.
The control unit then applies battery voltage to the
YEUREO and BLU/RED wires and oround to the
WHT/RED wire. The door lock actuators then
activate to unlock the doors.
When you unlock the driver's door with the key or
the door lock knob, it is mechanically unlocked; the
other doors do not unlock.
Door Unlocking with Transmitter
When you press the UNLOCK button on the remote
transmitter once, the keyless door lock control unit
applies battery voltage to the WHT/RED wire and
ground to the BLU/RED wire to unlock the driver's
door. When you press the UNLOCK button twice,
the control unit then applies ground to the YEURED
wires lo activate the passenger door locks. lf you do
not open a door within 30 seconds after unlocking
the doors with the transmitter, the doors
automatically relock.
Transmitter Programming
. Entering the programming mode cancels all
learned transmitter codes, so none of the
previously programmed transmitters will work.
You must reprogram all the transmitters once
you're in the programming mode.
. To keep the system from exiting the
programming mode, complete each step within 5
seconds of the previous step, and program the
transmitters within 10 seconds of each other.'1 . Turn the ignition switch ON (ll).
2. Press the "LOCK" or "UNLOCK" button on one
of the transmitters. (A non-programmed
transmitter can be used for this step.)
3. Turn the ignition switch OFF (0).
4. Repeat steps 1, 2, and 3 two more times with
the transmitter used in step 2.
5. Turn the ignition switch ON (ll).
6. Press the "LOCK" or "UNLOCK" button on the
same transmitter. Check that the power door
locks cycle to confirm that you're in the
programmrng mooe.
7. Press the "LOCK" or "UNLOCK" button on each
lransmitter. (You can program up to four
lransmitters per vehicle.) Check that the power
door locks cycle after you push each transmitter
button, contirming that the system has accepted
the transmitter's code.
Beep On/Off Feature
1 . Press and hold the LOCK and OPTION buttons
on the transmitter.
2. Watch the transmitter's LED:
One flash: BeeD activated.
Two flashes: Beep deactivated.
130-14

Keyless Receiver Unit Troubleshooting
lf a faulty keyless door lock control unit has one of the symptoms below, turn to the page listed and tollow the
appropriate troubleshooting procedure. lf the symptom seems relatod to an input problem, or is not covered
by the troubleshooting procedures, do the Input Tests on page 130-16. Refer to the circuit schematic on
pages 130-12 and 130-13 as needed.
Symptom Index
Keyless Entry Does Not Work In Any Mode
Ceiling Light Does Not Come On When The Doors Are Unlocked
With TheTransmitter ....
Doors Do Not Unlock Or Lock With The Transmitter . .
Horn Does Not Sound With The Transmitter 'Beep" Feature On .........
Horn Does Not Sound In The Panic Mode ..
HornDoes NotStopSounding ...............
Page 1 30-17
Page 130- 18
Page 130-1 I
Page 130-19
Page 130-19
Page 1 30-19
Page 130-16Input Tests
\.
130-15

rl,
;
Keyless Entry Does Not Work ln Any
Mode
NOTE: Before beginning, verify that all the
transmitters are programmed to the vehicle.
1. ls the vehicle equipped with the optional security
system?
Yes - Go to the next steD.
No - Go to step 3.
2. Does lhe keyless entry work correctly when the
security control unit connector is disconnected?
Yes - Faulty security system, go to security
system for f urther lroubleshooting.
No - Go to the next steo.
3. Does the transmitter LED come on when anv of
the buttons are pressed?
Yes - Go to step 6.
No - Go to the next step.
4. ls the transmitter battery installed with the
positive side facing up?
Yes - Ensure that the battery contact tabs are
repositioned, then replace the battery.
Remove the key trom the ignition, then
close the doors and trunk. Press the
LOCK button on the transmitter six times,
then go to the next step.
No - Ensure that the battery contact tabs are
repositioned, then reinstall the battery
correctly. Then reprogram the transmitter
and retest it. Use the procedure on page
1 30-1 4 for transmitter programming.

130-17
7.
Does the transmitter LED come on when anv of
the buttons are oressed?
Yes - Go to the next steo.
No - Replace the transmitter and program it by
using the procedure on page 130-14.
Does the system work properly in all modes?
Yes - Finished. The system is OK.
No - Go to the next step.
Recheck with a known good transmitter
reprogrammed to the vehicle. Does the system
work properly in all modes?
Yes - Replace the transmitter and program it by
using the procedure on page 130-14.
No - Replace the keyless door lock control unit.

\.
\iu
Security System Does Not Work In Any
Mode (HX, LX, EX, DX-V, Si)
1. ls fuse 6 (in the under-dash box) OK?
Yes - Go to the next steo.
No - Replace the blown tuse, then go to the
next sleD.
2. Does the fuse blow again?
Yes - Go to the next step.
No - Retest the system.
3. Disconnect the security control unit connector.
4. ls there continuity from terminals 1, 10, 12, ot 22
to oround?
5.
Yes - Locate the short in the wiring between the
security control unit and the radio ('96-'98
models) or keyless door lock control unit
('99 model).
No - Go to the next step.
ls there battery voltage at terminal 10 of the
securitv control unil connector?
Yes - Go to the next steo.
No - Locate the open in the wiring between
fuse 6 and the securitv control unit.
133-17
rfe
6. ls there continuity f rom terminal 13 ot the
security control unit connector to ground?
7.
Yes - '96-'98 models: Go to the next steD.'99 models: Replace the security control
unit.
No - Locate the open in the wiring between the
security control unit and ground (G401 ).
With the security control unil connector
reconnected, is there battery voltage at terminal
21 ot the securitv control unit connector?
Yes - Go to the next step.
No- Beplace the security control unit.
ls there battery voltage at terminal 5 of the
keyless entry harness connector (B)?
Yes - Replace the radio.
No- Repair the damaged LT BLU wire
between the security control unit and
the radio.
8.

rl,Security System Does Not Disarm With
The Valet Switch
Security System Does Not Work ln The
Valet Mode ('96-'98 HX, LX, EX)
1. ls luse 3 (in the under-dash fuse box) OK?
Yes - Go to the next steD.
No - Replace the blown fuse, then go to the
next step.
2. Does the fuse blow again?
Yes - Locate and reoair the short.
No - Retest the system.
3. ls there battery voltage at terminal 11 of the
security control unit connecto( when the ignition
switch is in the ON (ll) position?
Yes - Go to the next step.
No - Locate the open in the wiring between
luse 3 and the security control unit.
ls lhere approximately 5 volts at terminal 4 of the
keyless entry harness connector (B)?
Yes - Go to the next step.
No - Replace the radio.
rl e
133-21
5. ls there approximately 5 volts at terminal 5 of the
security control unit connector?
Yes - Go to the next step.
No - Locate the open in the BLU wire between
the security control unit and the radio.
ls the voltage at terminal 5 oJ the security control
unit connector changed from approximately 5
volts to 0 volts when the valet switch is pressed?
Yes - Replace the security control unit.
No - ReDlace the radio.
6.

Security System (cont'd)
Security System Status LED Stays On
(HX, LX, EX, DX-V, Si)
1 . Does the security system status LED go out
when the security control unit connector is
disconnected?
Yes - Replace the security control unit.
No - '96-'98 models: Go to the next steD.'99 models: Locate and repair the short in
the BLUMHT wire between the security
LED and the security control unit
connector.
2. Does the security system status LED go out
when the keyless entry connector (B) is
disconnected?
Yes - Locate and repair the short in the
BLU,ryVHT wire behveen the keyless entry
harness connector (B) and the security
control unil connector.
No - Beplace the radio,
133-26
Security System Status LED Does Not
Come On ('96-'98 HX, LX, EX)
1 . ls there voltage at terminal 11 of the keyless
entry harness connector (B)?
Yes - Go to the next steo.
No - Replace the radio.
ls there voltage at terminal 14 of the security
control unit connector?
Yes - Go to the next steo,
No- Locate and repair the open in the
BLUMHT wire.
With the keyless entry harness connector (B)
connected, run a jumper from terminal 14 of the
security control unit connector to ground.
Does the securitv status LED come on?
Yes - Replace the security control unit.
No - Reolace the radio.