1996 HONDA CIVIC control unit

Power Door Locks
Control Unit Input Test ('99 - 00 models with Keyless Entry System) (cont'd)
BLU/RED WHT/RED
8LU/WHT8LK/YELRED/BLK
2345618
91012/t/t517td
LT GRN,/RED
BLK
Wire side of female terminals
Disconnect the 18P connector from the oower door lock control unit.
CAUTION: To prevent damage to the actuator, apply baftery voltage only momentarily.
Cavity WileTest conditionTest: Desired resultPossible cause if result is not obtained
BLU/RED
YEL/RED
WHT/GRN
GRN/WHT
IYEURED
Connect the YEURED
terminal to the WHT/
GRN terminal, and the
WHT/RED terminal to
the BLK terminal
momenraflty,
Check door lock operation:
All passenger's doors should
untocK.
Blown No. 51 (20 A) fuse in the
under-hood fuse/relay box
Faulty actuator
An open in the wire
5BLU/RED
Connect rhe BLU/RED1
terminal to the WHT/
GRN terminal, and the
WHT/RED terminal to
the BLK terminal
momenlaflry_
Check door lock operation:
Driver's door should unlock.
7WHT/RED
Connect the WHT/RED
terminal to the WHT/
GRN terminal, and the
YEURED terminal to
the BLK terminal
momenlaflry.
Check door lock operation:
All passenger doors should lock.
23-260

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.

Power Door Locks
Audio Unit {Keyless Receiver Circuitl Input Test ('96 - 98 models}
Remove the audio unit, then disconnect the A and B connectors (see page 23-189).
Inspect the connector and socket terminals to be sure they are all making good contact
. lf the terminals are bent, loose or corroded, repair them as necessary, and recheck the system
. lf the terminals look OK, make the following input tests at the connector.
- lf anv test indicates a problem, find and correct the cause, then recheck the system
lf all the inout tests prove OK, the control unit must be faulty; replace it.
A CONNECTOBB CONNECTOR
16P CONNECTORS
AUDIO UNIT
L
2.
WHT/BLU YEL/RED
{KEYLESS RECEIVER CIRCUIT}
23-262

)
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

)
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

Gomponent/Wiring Locations
Index: Without Front Passenger's Airbag (some Canada Modelsl
SRS INDICATOR LIGHT (ln the gauge assembly)Troubleshooting, page 24-13Gauge assembly, section 23
DRIVER'S AIRSAGReplacement,page 24-67Disposal, page 24-70
SRS UNITGROUNO
To HORN SWITCH
SRS MAIN HARNESS
SRS UNIT{lncluding safing sensorand impact sensor)Replacement. page 24,76
To CRUISE CONTROLSET/RESUME SWITCH
oo/ \oo
To DRIVER,S AIRBAG
DASHBOARD WIRE HARNESSto SRS INDICATOR LIGHT inGAUGE ASSEMBLY5P CONNECTOR
SERVICE CHECKCONNECTOR {2P}IB8N, BLKI
SRS MAINto UNDER-DASHFUSE/RELAY BOX2P CONNECTOR
SRS MAIN HARNESSto SRS UNIT18P CONNECTOR
SRS MAIN HARNESSto MAINWIREHARNESS3P CONNECTOR
MEMORY ERASE SIGNAL(MES) CONNECTON (2P'
IGRY, GRYI o. IGRN, GRNI
MAIN WIRE HARNESSto DASHBOARD WIRE HARNESS24P CONNECTOR
24-4
DUMMY RESISTOB

Precautions/ Procedures
)General Precautions
r Carefully inspect any SRS part before you install it Do
not install any part that shows signs of being dropped
or improperly handled' such as dents, cracks or defor-
mation:
- Airbags- Cable reel
- SRS unit
-
Use only a digital multimeter to check the system lf
it's not a Honda multimeter, make sure its output ls
1O mA (0.01 A) or less when switched to the smallest
value in the ohmmeter range. A tester with a higher
output could damage the airbag circuit or cause acci-
dental deployment and possible injury'
I Do not install used SRS parts from another vehicle
When making SRS repairs, use only new pans'
) Except when performing electrical inspections'
always disconnect both the negative cable and posl-
tive cable from the battery, and wait at least three
minutes before beginning work
r Replacement of the combination light and wiper/
washer switches and cruise control switch can be
done without removing the steering wheel:
- Combinalion light and wiper/washer switch replace
ment, see section 23
- Cruise control sevresume switch replacement' see
section 23.
. Whenever the ignition switch is ON {ll), or has been
turned OFF for less than three minutes' be careful not
to bump the SRS unit; the airbag(s) could accidental-
ly deploy and cause damage or injury'
. Whenever the airbag{s) has(have) been activated'
replace the SRS unit.l,
2+7
Airbag Handling and Storage
Do not try to disassemble the airbag assembly. lt has no
serviceable parts Once an airbag has been operated
(deployed). it cannot be repaired or reused'
For temporary storage of the airbag assembly during ser-
vice. olease observe the following precauttons:
. store the .emoved airbag assemblv with the pad sur-
face uo The driver's (and front passenger's) airbag
connecto''s'-as {have) a built.in short contact (see
page 2a-l 1
: | ..r r-+r-a k imninncrlv slorcd lace down,-""dd.r6t dtatltt-,tl could propel the unit whh enough
force lo c.usa 3a.ix! intury
AIRBAG CONNECTORS(With built in shon contact)
. Store the removed airbag assembly on a secure flat
surface away from any high heat source {exceeding
212"FI1OO"CJ and free of any oil' grease, detergent or
water.
CAUTION: lmproper handling or storage can intern'lJy
damage the airbag assembly, making it inoperativo
lf you suspect the airbag assembly has been dam€cd'
inslall a new unit. and relsr lo the Deployment/DisPG'l
olocedules for disposing ol the damaged airbag

SRS Indicator Light Wire Connections
SRS Indicator Light Power Circuit
DASHBOARD WIRE HARNESS
To UNDER-DASHFUSE/RELAY BOX -
20P CONNECTOR
SRS Indicato. Light Control Circuit
To SRS UNIT
tI
SRS MAIN HARNESS
C41 1, C412 : Terminal sido of mdlo t6rminalsC501, C5O2, C508, C801. C802, C807 : Wi.6 sidc of fomalo t.rminals
MAIN WIBE HARNESS
BLU
C508 -+ To GAUGE ASSEMBLY
c41 1
To GAUGE ASSEMBLY
at
C501 : DASHBOARDWIRE HARNESS 2oP CONNECTORC508 : DASHBOARD wlRE HARNESS 5P CONNECTORC801 : SRS MAIN HARNESS 2P CONNECTORC807 : SRS MAIN HARNESS 18P CONNECTOR
C802 : SRS MAIN HARNESS 3P CONNECTORC412 : MAIN WIRE HARNESS 3P CONNECTORC41 1 : MAIN WIRE HARNESS 24P CONNECTORC502 : DASHBOARD WIRE HARNESS 24P CONNECTOR
GRY
OI
24-25