1996 HONDA CIVIC ground wire

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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.
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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.

Security System (cont'd)
Security System Does Not Work ln Any
Mode (CX, DX)
1. ls luse 54 (in the under-hood fuse box) OK?
Yes - Go to the next step.
No - Repiace the blown fuse, then go to the
next step.
2. ls the fuse in the securiiy in-line fuse holder OK?
Yes - Go to the next step.
No - Replace the blown fuse, then go to next
srep.
3. Does either fuse blow again?
Yes - Locate and repair the short.
No - Retest the system.
4. ls there battery voltage at terminal 10 of the
security control unit connector?
Yes - Go to the next step.
No - Locate the open in the wiring between
fuse 54 and the security control unit.
ls there continuity from terminal 13 ol the
security control unit connector to ground?
Yes - Replace the security control unit.
No - Locate the open in the wiring between the
securitv control unit and G401.
5.
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Security System Does Not Arm (CX, DX)
1. Place the ceiling light in the center position.
Does the ceiling light come on, even with all the
doors closed?
Yes - Faulty door switch or short in wiring to
door switches.
No - Go to the next steo.
2. With the ignition switch in the ON (ll) position,
does the trunk open indicator in the gauge
assembly come on, even with the trunk closed?
Yes - Faulty trunk latch switch or short in the
BLU/BLK wire.
No - Go to the next step.
3. Does voltage at terminal 2 of the security control
unit connector change from battery voltage with
all doors closed, to less than 1 volt when any
door is ooened?
Yes - Go to the next step.
No - Repair the open in the terminal 2
(LT GRN/BLK or LT GRN/RED) wire.
Does voltage at terminal 3 of the security control
unit connector change from battery voltage with
the trunk closed, to less than 1 volt when the
trunk is oDened?
v]" - R"pt"." tne security control unit.
No - Bepair the open in the terminal 3
(BLU/BLK) wire.

Security System (conrd)
Parking Lights Do Not Flash (CX, DX)
1 . Do the parking lights, headlights, and taillights
come on with the headlight switch in the HEAD
position?
Yes - Go to the next step.
No - Repair the parking lights, headlights, or
taillights circuit.
2. ls there battery voltage at terminals 1 and 2 of
the light flasher relay connector?
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.t.
Yes - Go to the next step.
No - Repair the open in the WHT wire
between fuse 48 and the light flasher
relay.
ls there battery voltage at terminal 4 of the light
flasher relay connector?
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Yes - Go to the next step.
No - Replace the light flasher relay.
With the light flasher relay connector
disconnected, run a jumper wire from terminal 1
to terminal 3.
Do the parking lights and taillights come on?
Yes - Go to the next step.
No - Repair the open in the RED/GRN wire.
133-24
5. Does the voltage at terminal 4 of the light flasher
relay connector change from battery voltage to 0
volts repeatedly when the system is in the alarm
triggered mode?
Yes - Replace the light flasher relay.
No - Go to the next step.
With the security control unit connector
disconnected, run a jumper wire from termrnal
17 to ground.
Do the parking lights come on?
Yes - Replace the security control unit.
No - Repair the open in the terminal 17
(REDAIVHT) wire.
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Parking Lights Do Not Flash In Any Mode
(HX, LX, EX, DX-V Si)
1. Do the parking lights, headlights, and taillights
come on with the headlight switch in the HEAD
oosition?
Yes - Go to the next steo.
No - Repair the parking light, headlight, or
taillight circuit.
2. Does the horn sound when the transmitter
PANIC button is oressed?
Yes - Go to the next step.
No - Go to the "Horn Does Not Sound In the
Panic Mode" test on page 130-11 ('96-98
models) or 1 30-18 ('99 models).
3. ls there battery voltage at terminals 1 and 2 of
the light flasher relay connector?
Yes - Go to the next step.
No - Reoair the open in the WHT wire
behveen fuse 48 and the liqht flasher
reray.
ls there battery voltage at terminal 4 ol the light
flasher relay connector?
Yes - Go to the next steD.
No - Replace the light flasher relay.

133-25
5. With the light flasher relay connector
disconnected, run a jumper wire from terminal .l
to terminal 3.
Do the parking lights and taillights come on?
o.
Yes - Go to the next step.
No - Repair the open in the RED/GRN wire.
Does the voltage at terminal 4 of the light flasher
relay connector (C403) change from battery
voltage to 0 volts repeatedly when the security
svstem is in the PANIC mode?
Yes - Replace the light flasher relay.
No - Go to the next steP.
7. With the security control unit connector
disconnected, run a jumper wire from terminal
17 to ground.
Do the parking lights and taillights come on?
Yes - Replace the security conlrol unit.
No - Repair the open in the terminal 17
(REDMHT) wire.
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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.

Starter Cut Does Not Work Properly
(HX, LX, EX, DX-V, Si)
1 . With the security system connector
disconnected, run a jumper wire f rom terminal
19 to ground.
Does the starter motor operate when the ignition
switch is turned to START (lll)?
2.
Yes - Replace the security control unit.
No - Go to the next steD.
ls there baltery voltage at terminals 2 and 3 of
the security starter cut relay connector, when the
ignition switch is in the START (lll) position?
Yes - Go to the next step,
No - Reoair the ooen in the BLK/YEL wire
between the ignition switch and the
security starter cut relay.
ls there battery voltage at terminal 6 of the
securitv starter cut relav?
Yes - Go to the next steo.
No - Replace the security starter cut relay.
3.
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133-27
4. With the security starter cut relay connector
disconnected, run a jumper wire from terminal 2
to terminal 4.
Does the slarter motor operate when the ignition
switch is turned to START (lll)?
5.
Yes - Go to the next step,
No - Repair the starting system.
With the security starter cut relay connector
reconnected, does the voltage at terminal 6
change from battery voltage to 0 volts when the
system is in the Alarm Triggered Mode?
Yes - Replace the security starter cut relay.
No - Repair the open in terminal 19
(BED/YEL) wire.
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Security System (cont'd)
Starter Cut Does Not Work Properly
(cx, Dx)
1 . With the security system connector
disconnected, run a jumper wire f rom terminal
19 to ground,
Does the starter motor operate when the ignition
switch is turned to START (lll)?
Yes - Replace the security control unit.
No - Go to the next steo.
ls there battery voltage at terminals 2 and 3 of
the security starter cut relay connector, when the
ignition switch is in the START (lll) position?
Yes - Go to the next step.
No - Repair the open in the BLKMHT wire
between the ignition switch and the
security starter cut relay.
ls there battery voltage at terminal 6 of the
securitv starter cut relav?
Yes - Go to the next step.
No - Beplace the security starter cut relay.
4
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133-28
4. With the security starter cut relay connector
disconnected, run a jumper wire from terminal 2
to terminal 4.
Does the starter motor operate when the ignition
switch is turned to START (lll)?
Yes - Go to the next steo.
No - Repair lhe starting system.
Does the voltage at terminal 6 of the security
starter cut relay change trom battery voltage to 0
volts when the system is in the Alarm Triggered
Mode?
Yes - Replace the security starter cut relay.
No - Repair the open in the terminal 19 (GRN)
wtre.
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.1,
Horn Does Not Sound When Alarm ls
Triggered
1. Does the horn sound when the horn button is
pressed?
Yes - Go to the next step.
No- Repair the horn circuit.
2. With the security control connector
disconnected, run a jumper wire f rom terminal'18 to ground.
Does the horn sound?
Yes - Replace the security control unit.
No - Repair the open in the lerminal 18
(GRY) wire.
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