for HONDA CIVIC 1997 6.G Workshop Manual

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

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
CavhiosLocationConnocts ioNotes
c401
c402
c403
c404
c405
c406
c407
c407
c408
c409
c410
c411
c412
c413
c414
c415
c416
c417
c418
c4l9
c420
c42'l
c423
c424
c425
c426
c427
c42A
c429
c430
c431
c432
c433
c434
c435
c431
c438
c439
'14
't4
I
I
10't2
24
16
7
o
18
20
18
7
6
I
o
4
7
8
14
1
Above under-dash fuss/relay box
Under left side ot dash
Under left sid€ of dash
Under left side of dash
Under left side of dash
Und€r left side of dash
Under left side of dash
Under left side of dash
Under left side of dash
Behind under-dash fuse/relay box
Under left side of dash
Under left side of dash
Above under-dash fuse/relay box
Under left side of dash
Under left side of dash
Above under-dash fuse/r€lay box
Under left side of dash
Under left side of dash
Under left side of dash
Behind under-dash fuse/relay box
Eehind under-dash fuse/relay box
Behind under-dash fuse/relay box
Behind under-dash fuse/relay box
Behind under-dash fuse/relay box
Under left side of dash
Under left side of dash
In the steering column cover
In the steering column cover
In the steering column cover
In the steering column covEr
Under left side of dash
Under left side of dash
Under middle of dash
Under middle of dash
Under middle of dash
Under middle of dash
Under left side of dash
Under left side of dash
Eehind under-dash fus€/relay box
Floo. wire harness (C555)
Floor wire harness (C554)
Security system
Cruise control unit
Daytime running lights control unit
Daytime running lights control unit
Roof wire harness (C701)
Moonroof wire harness (C7l1)
Front fog light connector
Integrated control unit
Dashboard wire harness (C504)
Dashboard wire harness (C502)
SRS main harness (C802)
Data link connector
Starter cut relay
lgnition switch
Security system
Clutch switch
Clutch interlock switch
Under-dash fuss/relay box (C9191
Undor-dash fuse/r€lay box {C920)
Under-dash tuse/relay box (C922)
Under-dash luse/relay box (C914)
Under-dash fuse/rBlay box (C915)
Horn relay
Brake swilch
Windshield wiper/washer switch
Rear window wiper/washer switch
Turn signal switch
Combination lighvturn signal switch
Cable reel
lnterlock control unit
Secondary heated oxygen sensor sub-
harn€ss (C781)
Ay'T gear position switch
Shift lock solenoid
Park pin switch and Ay'T gear position
console light
Transmission control module (TCM)
Transmission control module {TCM)
Under-dash fuse/relay box {C925)
ABS
Optional
Canada
Canada
Optional
Atr
MTT
Optional
Mlf
NT
Atf
CVT
CVT
Optional
AN
Atr
G401Left kick panelBody ground, via main wire harness
Main Wir€ Harness (Loft side of da3h and floor branch): '96 - 97 models
*2:Without moonroof*4: With moonroof*5: M/T (with cruise control or for D16Y5 engine)*6: With secondary heated oxygen sensor (H02S)
23-32

Connector ldentification and Wire Harness Routing
Connoctor or
Tgrminal
Number of
CavitiesLocationConneqts toNot€s
c401
c402
c403
c404
c405
c406
c407
c407
c408
c409
c410
c411
c4't2
c413
c414
c415
c416
c417
c418
c419
c420
c421
c422
c423
c424
c425
c426
c427
c428
c429
c430
c431
c432
c433
c434
c435
c437
c438
't4
l4
8,
1
10
12
24
7
6
18
20
18
7
6
8
7
8
14
2
Above under-dash fuse/relay box
Under left side of dash
Under left side of dash
Under left side of dash
Under left side of dash
Under left side of dash
Under left side of dash
Under left side of dash
Under left side of dash
Behind under-dash fuss/relay box
Under left side of dash
Under left side of dash
Above under-dash fuse/relay box
Under left side of dash
Under-dash relay box
Above under-dash fuse/relay box
Under left side of dash
Under left side of dash
Under left side of dash
Eehind under-dash fuse/relay box
Behind under-dash fuse/relay box
Behind under-dash fuse/relay box
Behind under-dash fuse/rslay box
Behind under-dash fuse/relay box
Under-dash relay box
Under left side of dash
In the steering column cover
In the steering column cover
In the steering column cover
In the steering column cover
Under left side of dash
Under left side of dash
Under middle of dash
Under middle of dash
Under middle of dash
Under middle of dash
Under left side of dash
Under left side of dash
Floor wire harness (C555)
Floor wire harness (C554)
Security system
Cruise control unit
Daytime running lights control unit
Daytime running lights control unit
Roof wiro harness (C7011
Moonroof wire harness (C711)
Front fog light connector
Integrated control unit
Dashboard wire harness (C504)
Dashboard wire harness (C502)
SRS main harness (C802)
Data link connector
Starter cut relay
lgnition switch
Security system
Clutch switch
Clutch inlerlock switch
Under-dash fuse/relay box (C919)
Under-dash fuse/relay box (C920)
Under-dash fuse/relay box (C922)
Under-dash fuse/relay box (C914)
Under-dash fuse/relay box (C915)
Horn relay
Brake switch
Windshield wiper/washer switch
Rear window wiper/washer switch
Turn signal switch
Combination light/,turn signal switch
Cable reel
lnterlock control unit
Secondary heated orygen sensor sub-
harness (C781)
Ay'T gear position switch
Shift lock solenoid
Park pin switch and Aff gear position
console light
Transmission control module (TCMI
Transmission control module (TCM)
ABS
Optional
Canada
Canada
Optional
M
MIT
Optionsl
MlT
Alr
NT
NT
CVT
CVT
G401Left kick panelBody ground, via main wire harness
Main Wire Harn€ss {Left side ot dash and floor branchl: '98 model
*2: Without moonroof*4:With moonroof*5: M/T (with cruise control or for D16Y5 engine)*6: With secondary heated oxygen sensor (H02S)
23-34

Connector ldentification and Wire Harness Routing
Connosto! ol
Tsrminal
Number of
CavitiesLocationConnoqtg toNotes
c401
c402
c403
c404
c405
c406
c407
c407
c408
c409
c410
c411
c412
c4'I3
c4't4
c415
c416
c417
c418
c419
c420
c42l
c422
c423
c424
c425
c426
c427
c428
c429
c430
c431
c432
c433
c434
c435
c447
c448
c449
c450
c451
20
4
14
I
6
1
10
12
24
16
4
7
6
2
18
20
18
7
4
8
o
7
8
14
22
18
Above under-dash fuse/relay box
Under left side of dash
Under left side of dash
Under left side of dash
Under left side of dash
Under left side of dash
Under left side of dash
Under left side of dash
Under left side of dash
Behind under-dash fuse/relay box
Under left side of dash
Under left side of dash
Above under-dash fuse/relay box
Under left side of dash
Under-dash relay box
Above under-dash fuse/relay box
Under left side of dash
Under left side of dash
Under left side of dash
Behind under-dash fuse/relay box
Behind under-dash fuse/relay box
Behind under-dash fuse/relay box
Behind under-dash fuse/relay box
Behind under-dash fuse/relay box
Under-dash relay box
Under left side of dash
In the steering column cover
In the steering column cover
In the steering column cover
In the steering column cover
Under lett side of dash
Under left side of dash
Under middle of dash
Under middle of dash
Under middle of dash
Under middle of dash
Under left side of dash
Under left side of dash
Under middle of dash
Under left side of dash
Under left side of dash
Floor wire harness (C555)
Floor wire harness (C554)
Security system
Cruise control unit
Daytime running lights control unit
Daytime running lights control unit
Roof wire harness (C701)
Moonroof wire harness {C711)
Front fog light connector
Intagrated control unit
Dashboard wire harness (C504)
Dashboard wire harness (C502)
SRS main ha.ness (C802)
Data link connector
Starter cut relay
lgnition switch
Security system
Clutch switch
Clutch interlock switch
Under-dash fus€/relay box (C919)
Under-dash fuse/relay box (C920)
Under-dash fuse/relay box (C922)
Under-dash fuse/relay box (C914)
Under-dash fuse/relay box (C915)
Horn relay
Brake switch
Windshield wiper/washer switch
Rear window wiper/Washer switch
Turn signal switch
Combination light/turn signal switch
Cable reel
lnterlock control unit
Secondary heaied oxygen sensor sub-
harness (C781)
A/T gear position switch
Shift lock solenoid
Park pin switch and A,/T g€ar position
console light
Security system
Security system
IVT gear position indicator trim light
Security system
Keyless door lock control unit
ABS
Optional
Canada
Canada
Optional
At-|.
M/T
Optional
M/T
Atr
Optional
Optional
Optional
Atr
AIT
AJ-|.
G401Left kick panelBody ground, via main wire harness
Main Wire Halness lLoft side of dash 8nd lloor branchl: '99 - 00 mod€ls
*2: Without moonroof*4: With moonroof*5: M/T (with cruise control or for Dl6Y5 engine)*6: With secondary heated oxygen sensor (H02S)
23-36

Power Distribution
Circuit ldentification (cont'd)
Canada:
COMBINATIONLIGHT SWITCH
N0.48 {30A)
RED/BLU - Right headlighl (High boam)
FEDiBLU ----< REstsTOR
REo/GRN - HiJh beam indicator lighl
BEo/GRN - Left headlighl iH,gh beam)
L<REsrsroR
Fight headlight {Low beam)
FEo/YEL - L€ll headlight (Low beam)
(Fuse/lelay box sockel)Optional conneclor (oash lighs)
Inleg6led conlrcl unil
- Hazard wanirE swilch lighl
i- Gauge lEhts
l- Audio unil
l- Re& Yrindow delogg8r swili
t- Ctuise main swrdr ligh
l- C/uise indEator l
E g"ffiry:'l,:1':::1
Refi window delog$r swildr light
Ctuise indicalor 1 dimming,T geal posilion indicator J circu(Dasn lghls brignmess co oller
BRAKESYSTEMLIGHT
V
I
l- GFf
,,4,,0*,lf tIFLUDII ,j I LEVEL
Y
SWTCH
I8LKI
I
I
I:
G401G402
REo/BLK - l/T ged position console lqhl- Hqalor codrot panel tighl
REO/BLK -F- Lefi ) .l- g;n1J lron 9arrn! qm
FEDiBLK + Letl I
F Rqn J ouer larrqns
- I Al, I
{- i'-;*; inne' raittiotts
E fifi]t'"nt"o't't'sn"
*ro,rru -$ RcHT HEADLIGHT (Hrgh beam)
BEDiGRN -+ LEFI H EADLIGHT (High beam)
I BLK
IIPARKING IEFAKE IswrrcH I
I:
G401G402
UNDER,DASH FUSE/RELAY 8OX
lo| | PASSTNGto
/Fforn page\\a-68 l
N0.48 {304)FUSE/From page\\23-72 )
N0.18 (7.54)FUSE/From page \\?3-69 J
v
YIYEUBLK
N0.48 (40A)FUSE/From paqe \\23-68 - ,/
RED6RN
23-74

Under-dash Fuse/RelaY Box
Removal/lnstallation
SRS components are located in this area. Review lhe
SRS component locations, precautions, and procedures
in the SRS section (24) before performing repairs or ser-
vice.
Removal:
1. Make sure you have the anti-lheft code for the radio
then write down the frequencies lor the radio's pre-
set buttons ('99 - 00 modelsl.
2. Disconnect the battery negative cable. then discon
nect the positive cable, and wait at least three min
utes,
3. Disconnect the airbag connectors (see section 24)'
4. Remove the driver's dashboard lower cover and
knee bolster (see section 20)
5. Remove the two mounting nuts, and pull the under
dash fuse/relay box out from under the dash'
6. Disconnect the connectors from the under-dash
fuse/relay box, and take out the under-dash fuse/
relay box (see section 24).
lnstallation:
1. Connect the connectors to the under-dash tuse/
relay box, then install the under dash fuse/relay box
in the reverse order of removal (see section 24)'
2. Install the driver's dashboard lower cover (see sec
tion 20).
3. Connect the airbag connectors {see section 24)
4. Connect the battery positive cable, then connect the
negative cable.
5. Enter the anti-theft code lor the radio, then enter the
customer's radio station presets ('99 - 00 models)'
6. Confirm that all sYstems work properly'
23-45

Power Relays
Relay Test
Turn Signal/Hazard Relay:
See page 23-172
Normally-open type:
1. Check for continuity between the terminals.. There should be continujty between the No. 1 andNo.3 terminals when power and ground are con-nected to the No. 2 and No. 4 terminals.. There should be no continuity between the No. 1and No. 3 terminals when power is disconnected.
3
. Blower motor relay
. ABS pump motor relay
Terminal
-i*rt"r-*or\13
Disconnected
Connectedo
,I IIY F>rr €,?I
23-86
. Rear window defogger relay
Starter cut relayt '96 - 97 models
Horn relayi '96 97 models
Blower motor high relay: '99 - 0O mooersa