1997 HONDA CIVIC ECU

Rear Seat
RemovaUlnstallation
3D:
>: Bolt locationsa>,6
i_): Hook locations4i.,,2
c>, 1
Bt-;,1
T=ttJX,.)MIOOLE FLOORCENTER GUSSET
6x1.Omm9.8 N.m {1.07.2 tbt.trl
STRIKERRemove the side trimpanel (see page 20 60).
.2 tb,f.ft)
--::.........VV
STNIKER
>: Clip locations, 14
l@nIFF(EE
\qt
;*... 1PIVOTBRACKET
SEAT CUSHION
HOOK
A
c
Pivot boft con3truction:
TOOTXEDLOCKWASHERSEAT.BACK
A
Instailation is the reverse of the removal procedure.
NOTE:
. Before attaching the seat-back and seat cushion, make sure there are
center belt.
. When installing the seat cushion, slip the seat belt buckles through the
. Make sure the seat-back locks securely.
. lf necessary, adjust the striker and seat-back.
20-126
PIVOT BOLT BRACKET8 x 1.25 mm22 N.m 12,2 kgf,m, 16 lbl.ftlApply liquid thread lock.
no twists or kinks in the rear seat belts and
slits in the seat cushion.
iI
*nt.]
j
6x1.0mm9.8 N.m {1.0
B>,'t
I
-@e ' t.o.- |S=222 N.m 12.2 kg{.m,Ig 16 tbf.ft) j
:,/
I
I
Ifgf..,i
l
)
l---

,-. ): Hook locations^(:).zB() ' t2D:
>: Bolt locationsA>,6c>,1B>. 1
6le
9rJ*'Ll-",-, i VH 16 rbr'frl ) g
,/v
6x1.omm i9.8 N.m 11.0 ksf.m,l7.2 rbf.ft) i
>: Clio locations, 14
PIVOT BRACKET
V
CENTER
RIGHT SEAT-BACK
LEFTSEAT-BACK
SEAT CUSHION
lnstallation is the reverse of the removal procedure.
NOTE:
. Before attaching the seat-back and seat cushion, make sure there are
center belt.
. When installing the seat cushion, slip the seat belt buckles through the
. Make sure the seat-back locks securely
. lf necessary, adjust the seat-back latch and seat-back
BUSHING
PIVOT BOLTBRACKET8 x 1.25 mm22 N.m {2.2 kgf.m, 16 lbIft)Apply liquid thread lock.
no twists or kinks in the rear seat belts and
slits in the seat cushion.
SEAT-AACK MAT
VV
TOOIHEDLOCKWASHER
PIVOT BRACKET
20-127

Opener and Latch
Hatch Latch/Lock Cylinder Replacement (cont'd)
4. Pullthe lock rod out.
lf necessary, remove the lock cylinder.
>: Bolt locelion. 1
6xr.omm I9.8 N.m (1.0 kq .m, I9.8 N.m (1.0 kq .m, I,:!!_J
6. Install in the reverse order of removal, and note
these atems:
. Apply grease to the hatch latch.. Make sure the connector is connected properly.. Before installing the hatch trim panel, make surethe hatch opens properly and locks securely.
ry*)*,,
\""<,/
.z ,/\
20-134

Front Air SPoiler RePlacement
CAUTION: Put on gloves to protect your hands'
NOTE:
. An assistant is helpful when removing the front bumper'
. Take care not to scratch the front bumper and body'
>: Bolt, screw localions
A >,9 B >,4
s*i@l
BUMPER
lnstallation is the reverse of the removal procedure'
NOTE:
. Make sure the front bumper engages the front
bumper side stiffener on each side securely'
o lf necessary. adjustthe front bumper side stiffener
to obtain the Proper gap.
FRONT AIR SPOILER
20-137

Heater Unit
Replacement (cont'dl
6.
7.
8.
9.
Remove the dashboard (see section 20).
Remove the heater duct (see page 21-37) or evapo-
rator (see page 22-28).
Disconnect the connectors from the mode control
motor and air mix control motor ('99 - 00 models),
then remove the wire harness clips and wire har-
ness from the heater unit. Remove the clip from the
heater duct, then remove the two mounting nuts
and the heater unit.
6x1.0mm9.8 N.m 11.0 kgl.m,7.2 lbf.ftl
HEATER UNIT
lnstall in the reverse order of removal. Make note of
the following items.
Apply sealant to the grommets.
Do not interchange the inlet and outlet heater
hoses. Make sure that the clamps are secure.
Refill the cooling system with engine coolant
(see section 10).
Connect all cables, and make sure they are prop-
erly adjusted (see page 21-44 (96 - 98 models)
or page 21-45 ('99 - 00 models)).
Make sure that there is no air leakage.
21-40

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
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