1999 HONDA CIVIC wire

Troubleshooting
ll.
Tips and Precautions
Bef ore Troubleshooting
. Check applicable fuses in the appropriate fuse/relay
box.
. Check the battery for damage, state of charge, and
clean and tight connections.
. Check the alternator belt tension.
CAUTION:
. Do not quick-charge a battery unless the battery
ground cable has been disconneqted, otherwise you
will damage the alternator diodes.
. Do not attempt to crank the engine with the battery
ground cable loosely connecled or you will severely
damage the wiling,
Handling Connectois
. Make sure the connectors are clean and have no loose
wire terminals.
. Make sure multiple cavity connectors are packed with
grease (except watertight connectors)
. All connectors have push-down release type locks.
Some connectors have a clip on their side used to
attach them to a mount bracket on the body or on
another component. This clip has a pulltype lock.
Some mounted connectors cannot be disconnected
unless you first release the lock and remove the con-
nector from its mount bracket.
LOCKINGPAWL ONOTHERHALF OFCONNECTOR
Pull todrsengage
LOCKING TAB
BRACKET
Never try to disconnect connectors by pulling on
their wires; pull on the connector halves instead
Alwavs reinstall plastic covers.
Before connectang connectors,
nals are in place and not bent.
make sure the terml-
. Check for loose retainer and rubber seals.
RETAINER
The backs of some connectors are packed with
grease. Add grease if necessary. lf the grease is con-
taminated, replace it.
(cont'd)
23-3

Troubleshooting
Tips and Precautions (cont'dl
Insert the connector all the way and make sure it is
securelv locked.
Position wires so that the open end of the cover faces
down.
After installing harness clips, make sure the harness
doesn't interfere with any moving pans.
Keep wire harnesses away from exhaust pipes and
other hot parts. from sharp edges of brackets and
holes, and from exDosed screws and bolts.
V
F6c6op€n end
Handling Wires and Harnosscs
. Secure wires and wire harnesses to the frame with
their respective wire ties at the designated locations,
. Remove clips carefully; don't damage their locks.
Slip pliers under the clip base and through the hole at
an angle, then squeeze the expansion tabs to release the
clrp.
SNAP-BING PLIERS
23-4
NOT GOOO
ll il,/
s*' -.1}8."/_Y--_Y5\
il ,,
Testing and Repairs
o Do not use wires or harnesses with broken insulation.
Replace them or repair them by wrspping the break
with electricaltaoe.
. After installing parts, make sure that no wires arepinched under them.. When using electrical test equipment, follow the
manufacturer's instructions and those described in
this manual.
. lf possible, insert the probe of the tester from the
wire side (except waterproof connector).
. Seat grommets in their grooves properly.
. Use a probe with a tapered tip.
Refer to the instructions in the Honda Terminal Kit for
identification and replacement of connector termi-
nats.

t
Five-step Troubleshooting
2.
1.Verify The Complaint
Turn on all the components in the problem circuit to
verify the customer complaint. Note the symptoms.
Do not begin disassembly or testing until you have
narrowed down the problem area.
Analyze The Schematic
Look up the schematic for the problem circuit.
Determine how the circuit is supposed to work by
tracing the current paths from the power feed
through the circuit components to ground. 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 circult operation, identify one or more possible
causes of the problem.
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 proce-
dure 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.
Fix The Problem
Once the specific problem is identified, make the
repair. Be sure to use proper tools and safe proce-
dures.
Make Sure The Circuit Works
Turn on all components in the repaired circuit in all
modes to make sure you've fixed the entire prob-
lem. lf the problem was a blown fuse, be sure to
test all of the circuits on the fuse, Make sure no new
problems turn up and the original problem does not
recur.
3.
Wire Color Codes
The following abbreviations are used to identify wire
colors in the circuit schematics:
wHT ............................. White
YEL ............................... Yellow
BLK ............,.,...............81ack
BLU .............................. Blue
GRN .............................Green
RED .......................,...... Red
ORN ............................. Orange
PNK .............................. Pink
BRN .............................. Brown
GRY .............................. Gray
PUR .,.................,.,........ Purple
LT BLU ......................... Light Blue
LT GRN ........................ Light Green
The wire insulation has one color or one color with
another color stripe. The second color is the stripe.
WHT/BLK
23-5

Relay and Control Unit Locations
Dashboard: '96 - 97 models
CRUISE CONINOL UNIT
DAYTIMERUNNING LIG}ITSCONTROL UNITlCan!dal
IWire colo.s: GRN/ORN, GRN/RED,l
IWHT, YEL, and BLK I. MOONROOF CLOSE RELAYfwir. colorc: GRN/ORru, Cnru/VeLl
IWHT. GRN/RED, and ALK I
DASH LIGHTS BRIGHTNESS CONTROLLER{Has built-in control unit)
23-8

D
INTEGRATEDCONTROL UNITUNDER.OASHFUSE/RELAY BOX
HORN RELAYI Wire colors: WHT/GRttt, WXf/Cnru,l
[GRY, and BLU/RED ,J
POWER WINDOW RELAY
INTERLOCK CONTROL UNIT
'gtP"tat{}r) (}t /t t ------,)
F;;snHn-nnn"nf-H-n o
F !r rr rr rr r,r Lr Ll u u l,r
Fnnnnnnnrrrr-1F rr rr rJ LJ rJ r-r t-r L-r LJ Lr ||J
u_::;_:_:_:_:_l_;I::
*TCM (CVT)
*: Coupe
23-9

Connector ldentification and Wire Harness Routing
D
How to ldentify Connectors:
ldentification numbers have been assigned to all connectors. The number is preceded by the letter "C" for connectors,"G" for ground terminals or "T" for non-ground terminals.
Location
HarnessEngine CompartmentDashboardOthers {Floor, Door,
Trunk/Hatch, and Rootl
Starter cablesT1, T2 and @
Battery ground cableG1 and O
Engine ground cable AT3
G2
Engine ground cable BT4
Under-hood ABS fuse/relay box wire
harness (With ABS)
t5 ano (9
Engine wire harnessCl01 thru C147
T101 and T102
G101
Engine compartmenl ware harnessC201 thru C215
G201 and G202
Main wire harnessC301 thru C310
C351 thru C361
C401 thru C452
G401 and G402
Dashboard wire harnessC501 thru C520
G501
FIoor wire harnessC551 thru C573
G551 and G552
Rear wire harnessC601 thru C62l
G601 and G602
Driver's door wire harnessC631 thru C640
Passenger's door wire harnessC651 thru C657
Left rear door wire harness (Sedan)C661 thru C664
Right rear door wire harness (Sedan)C671 thru C674
Roof wire harness (Without moonroof)C701 thru C719
Moonroof wire harness {With moon-
roof)
C7l'l thru C719
Heater sub-harness AC721 thru C729
Heater sub-harness BC7 41 thtu C7 44
Ay'C wire harnessC751 thru C754
G751
Hatch wire harness (Hatchback)C761 thru C768
Rear window defogger grgund wirec771
G171
Secondary heated orygen sensor sub-
narness
C781 and C782
Fuel tank pressure sensor sub-harnessC791 thru C793
SRS main harnessC801 thru C807
G801
Rear window defogger wireC831 thru C833

Connector ldentification and Wire Harness Routing
Connector or
Terminal
Number of
CavitiesLocalionConnec{s toNotes
T,I
r2
Right side of engine compartment
Right side of engine compartment
Under-hood fuse/relay box
Starter motor
BatteryBattery positive terminal
Starter Cables
A/C Wire Harness
Battery Ground Cable
Connector or
Terminal
Number of
CavitiesLocationConn€cts toNotos
Right front shock towerBody ground, via battery ground
caDte
oBafteryBattery negative terminal
Engine Ground Cable A
Conn€qtor or
Terminal
Number ot
CavitiosLocationConnects toNoles
T3Left side of enginePower steering pump bracket
G2Left side of engine compartmentBody ground, via engine ground
cable A
Engine Ground Cable B
Connector or
Terminal
Number of
CavitiesLocationConnecls toNoles
T4Right side of engine compartmentTransmission
Right side of front frameBody ground, via engine ground
cable B
Under-hood ABS Fusa/Relay Box Wire Harness
Connector or
Tgrminal
Number oI
CavitiesLocationConneqts toNotes
T5Right side of engine compartmentUnder-hood fuse/relay box
@BaneryBattery positive terminal
Connector or
Terminal
Number of
CavitiesLocationConnects toNotes
c753
c754
1
2
Right side of engine compartment
Right side of engine compartment
Right side of engine compartment
Right side of engine compartment
Engine compartment wire harness(c209)
Compressor clutch
Condenser fan motor
A,/C pressure switch
Left side of engine compartmentBody ground, via A,/C wire harness
23-14

d
STARTERCABLES
BATTERYGROUNDCABLE
UNDER-HOOOABS FUSE,/RELAYBOX WIREHARNESS
GROUNDCABLE B
A/C WIREHARNESS
23-15