trim HONDA CIVIC 1997 6.G Workshop Manual

Troubleshooting
Troubleshooting Procedures
How To Begin Troubleshooting
When the Malfunction Indicator Lamp (MlL) has been reported on, or there is a driveability problem, use the appropr'-
ate orocedure below to diagnose and repair the problem'
A. When the MIL has come on:
,1. connect the Honda PGM Tester or an oBD ll scan tool to the 16P Data Link connector (DLC) located near the left
kick panel.
2. Turn the ignition switch ON (ll)
3. Check the DTC and note it. Also check and note
the freeze trame data
Refer to the Diagnostic Trouble Code Chart and
begin troubleshooting.
NOTE:
.SeetheoBD||scantoolorHondaPGMTesteruser,smanua|sforspecificoperatinginstructions..
.Thescantoo|oltestercanreadtheDiagnosticTroub|ecodes(DTc},freezeframedata,currentdata,andother
Engine Control Module (ECM)/Powertrain Control Module (PCM) data'
oFreezeframedataindicatestheengineconditionswhenthefirstma|function,misfireorfue|trimma|function
was detected. lt can be useful information when troubleshooting'
B. When the MIL has not come on , out there is a d riveability problem, refer to the Symptom Chart on page 1 1-84'
c.DTcswi|lbeindicatedbytheb|inkingoftheMa|function|ndicatorLamp(M|L)withthescsserviceconnectorcon.
nected.
Connect the SCS service connector to Service Check Connector as shown (The 2P Service Check Connector is
|ocatedunderthedashonthepassenger,ssideofthevehic|e')TurntheignitionswitchoN{||)'
OBO ll SCAN TOOL olHONOA PGM TESTER
SERVICE CHECKCONNECTOR I2P)
scs sERvlcE(cont'd)
MALFUNCTIONINDICATORLAMP
DATA LINK CONNECTOR Il6PI
07PAZ - (x)l0100
11-81

DataDescriotion
Loop status is indicated as "open" or "closed"'
Closed: Based on the HO2S output, the ECM/PCM deter-
mines the airlfuel ratio and controls the amount of inject-
ed fuel.
Open: lgnoring HO2S output, the ECM/PCM refers to sig-
nals from the TP, MAP, and ECT sensors to control the
amount of injected fuel.
The air/fuel ratio correction coefficient for correcting the
amount ot injected fuel when H02S feedback is in the
closed loop status When the signal from the HO2S is
weak, short term fuel trim gets higher, and the ECM/PCM
increases the amount of injected fuel The airlfuel ratio
gradually gets richer, causing a higher HO2S output
Consequently, the short term fuel trim is lowered, and
the ECMiPCM reduces the amount of injected fuel
This cvcle keeps the airlfuel ratio close to the stoichio-
metric ratio when in closed loop status'
Operating ValueF eeza Data
HO2S
Feedback
Loop Status
At idle speed: closed
YES
Short Term
Fuel Trim
! 20%
YES
Long Term
Fuel Trim
Long term fuel trim is computed from shon term fuel
trim and indicates changes occurring in the fuel supply
svstem over a long Period
lf long term fuel trim is higher than 1.00, the amount of
injecGd fuel must be increased. lf it is lower than 1 00'
the amount of injected fuel must be reduced'
! 20%
YES
lntake Air
Temperature
{IAT)
The IAT sensor converts intake air temperature into volt-
age and signals the ECM/PCM. When intake air tempera-
ture is low, the internal resistance of the sensor
increases. and the voltaqe signal is higher'
With cold engine:
Same as ambient temPer'
ature and ECTYES
At idle speed:
approx. 10 %YESThrottle
Position
Based on the accelerator pedal position, the open'ng
angle of the throttle valve is indicated
lgnition
Timing
lgnition timing is the ignition advance angle set by the
gCV/eCV. tn" gCU/PCM matches ignition timing to the
driving conditions.
CLV is the engine load calculated from the MAP data'
At idle speed: 12'i 2'
(81642 engine: 16" t 2")
BTDC with the SCS ser-
vice connector connected.
NO
Calculated
Load Value
{CLV)
At idle speed:
15-35%
At 2.500 rpm with no load:
12 - 30%
YES
ro
11-87

PGM-FI System
Fuel Supply System
D017-il Th""""ntool indicates Diagnostic Troubte Code {DTC) p0171;Thefuet system istoo lean.
1P0172 | fne scan tool indicates Dlagnostic Trouble Code (DTC) P0172:Thefuel system istoo rich.
Description
By monitoring the Long Term Fuel Trim, long term malfunctions in the fuel system will be detected.lf a malfunction has been detected during two consecutive trips, the MIL will come on and DTC P0171 and/or P0172 will bestored.
NOTE: lf some of the DTCS listed below are stored at the same time as DTC P0171 andlot P0172, ltouhleshoot those DTCSfirst. then recheck for DTC P0l7l andlot P0172.
P0106-8, P1128*3. *5, P1129*3 *5 MAP Sensor
P0135; Primary HO2S Heater
P0137. P0138: Secondary HO2S
P0'141: Secondary HO2S Heater
P0401: EGR Flow Insufficient*1
P0441: EVAP System Insufficient Purge Flow*6
P1259: VTEC System*,
P1491:EGR Valve Lift Insufficient*r
P1498: EGR Valve Lift Sensor Hjgh Voltage*r
*r: D16Y5 engines*': Dl6Y5, D16Y8, 81642 engine*3: '97 models*a:'96 modelsf 5: '98 - 00 models*6: '96 D16Y5 engine,'96 D16Y7 engine,'96 D16Y8 engine (sedan),'97 D16y5 engine,,97 D16y7 engine (coupe: KA, KC mo+els, sedan KA. KC, KL (DX) models. hatchback; all models),'97 D16Y8 engine (sedan: KA, KC models)
Possible Cause
DTC P0'171
loo lean
DTC P0172
too rach
Fuel Pump insuff icient f lovpressure
Fuel Feed Line clogged, leaking
Fuel Pressure Regulator stuck open
Fuel Filter clogged
Fuel Injector clogged, air inclusion
Gasoline doesn't meet Owner's Manual spec.
Primary HO2S (Sensor 1) deteriorated
MAP Sensor range/performance*.
EGR System malfunction (too much flow)*1
Valve Clearance
Exhaust leak
Fuel Pressure Regulator clogged, stuck closed
Fuel Return Pipe clogged
Fuel Injector leaking
Gasoline doesn't meet Owner's Manual spec.Primary HO2S (Sensor 1) deteriorated
MAP Sensor range/performance*a
EGR System insufficient flow*1
EVAP Purge Control Solenoid Valve leaking, stuck opened
Valve Clearance
11-164

Doors
Door Panel Replacement
NOTE; Take care not to scratch the door panel and otherpans.
1. Remove:
. Inner handle (see page 20-3)
. Mirror mount cover panel (see page 20-24)
2. lf applicable, remove the regulator handle by pulling
HANOLE
3. Remove the door grip cover and speaker cover, thenremove the screws.
>: Screw locations, 5POWER WTNOOWswtTct{
the clip out with a wire hook.
20-4
4. Release the clips that hold the door panel. Remove
the door panel by pulling it upward.
NOTE: Remove the door panel with as little bending
as possible to avoid creasing or breaking it.
95 mm {3.74 in.)
.L12 mm(0.47 in.) fTRIM PADREMOVER(Commercially
availablelSnap-on#A'177, o.equivalenllmm(0.04 in.l
r_
rr-l
45 mm(1.77 in.l
>i Clip loc.tions, 5
lu-i
J$- I
:fe i
cL,P / IREMovERil I
_ _t/
Dasconnect the;peaker connector,
5. lnstallation is the reverse of the removal procedure.

Doors
Door Panel Replacement
NOTE: Take care not to scratch the door panel and otherparts.
1. Remove:
. Inner handle (see page 20-9)
. Regulator handle (see page 20-4)
2. Remove the door grip cover, then remove the screws.
>: Screw location3.2
20-10
3. Release the clips that hold the door panel. Removethe door panel by pulling it upward.
NOTE: Remove the door panel with as little bend-ang as possible to avoid creasing or breaking it.
,L12 mm(0.47 in.) T-TRIM PADREMOVER(Commercially
available)Snap-on#4177, orequival€nt
4
lNlrRrM PAD---_Jl iREMOVER .I+ ]
F/
rt{-
lmm l---4 ,nu"(o.o1in.l 1 f- -l45 mm '
11.77 in.l
>rClip locations, T
4. Installation is the reverse of the removal Drocedure.

Doors
Door Index
2DI3D:
OU?ERWEATHERSIRIP
GLASS GUIDECLIP
I sAsH
€*/
.u\
\Y\I
et'
SPEAKER COVER
INNER HANDLE
ii MTRROR MOUNT<]<-- COVER PANEL
-it v
$=-!xtruce
re
(sqjR5f"'
@." \s-l
h-P
-Qa,
(l+,
@
TRIM(with power door locks)
eowen ooon

rocK swrrcH
\b
INNEF HANOLETRIM{without power
dD door locks)
DOORAdjustment,page 20-23
BRACKET
dl
h
W/
ARMRESTPOCKET
;ril;"i-"- 9
JE
powen____-.-@
wtNDow .*\L'l
swrrcH
t
-p
Q*-BsfL-,"ARMRESTPOCKETlwith power
PLASTICCOVER
,",
S
dnJ.*-{
r-1*{
,P
SPEAKER
20-14

Doors
Door Panel Replacement
NOTE: Take care not to scratch the door panel andother pa rts.
'1. Remove:
. Inner handle trim (see page 20-14). Mirror mount cover panel (see page 20-24)
2. lf applicable, remove the regulator handle bypulling the clip out with a wire hook.
REGULATOR HANDLE
WIRE HOOK
Remove the armrest pocket, then disconnect thepower window switch connector.
ARMRESTPOCKET
4. Remove the speaker cover, then remove lhe screws.
3.
I
>: Screw locations, 3
| 6b:a,'
L"_
COVER
20-16
TRIM PADREMOVER(Commercially
available)Snap-on#A'177, orequivalent1mm{0.04 in.)
5. Release the clips that hold the door panel. Removethe door panel by pulling it upward. Disconnect thespeaker connector.
NOTE: Remove the door panel with as little bendingas possible to avoid creasing or breaking it.
.L12 fim(0.47 in.) T-
>: Clip locations,
l^
J[
=l$
ll,\*
atr-
,,)
REMoVER tl-)
11.77 in.l
O) CONNECTOR
6. lnstallation is the reverse of the removat oroceoure.
DOOR PANEL

b
Rear Window l3Dl:
SPACER,
I
| ,o"r.".". o
{ff*'*'YPe
bod'side)
FASTENER,4(Self-adhesive-type, glass side)
RUBBER DAM,2
tIISEAL A, 1
=@
SEAL B, 2
e
Ouarter Glass:
3D:
OUARTER GLASSRemoval, page 20-40Installation, page 20 4lOUARTERGLASS TRIM
LOWER CLIPlSelf adhesive'type)
2D:
FASTENER(Self-adhesive-type,glass side)
FASTENER(Self-adhesave type,body side)
\
\
)f\
n,
$(
\il]
LOWER RUBBERDAM
LOWER CLIP(Self adhesive-type)
J
20-27

Windshield
Removal
CAUTION:
. Put on gloves to plotest your h8nds.
. Use seat covers to avoid damaging any surfaces.
1. To remove the windshield, first remove the:. Rearview mirror (see page 20-25)
. Sunvisors and holders (see page 20-64)
. Front pillar trim (see pages 20-59, 60, 61)
! Windshield wiper arms and cowl cover (see page
20-1131
Peel off the molding, and remove the glass brack-
ers.
NOTE: When molding removal is difficult, cut the
molding with a knife.
WINDSHIELO
3. Pull down the front of the headliner (see page 20-
64).
CAUTION: Take care not to bend the headlinet
excsssively.
MOLDING
20-24
4. Apply protective tape along the edge of the dash
board and body as shown. Using an awl, make a
hole through the rubber dam and adhesive from
inside the car. Push the piano wire through the
hole, and wrap each end around a piece of wood-
PIANO WIREPROTECTIVE
UPPERRUBBER| '1"
DAM
WINDSHIELO
AOHESIVE
RUBBERDAM
With a helper on the outside, pull the piano wire
back and forth in a sawing motion, and carefully cut
through the rubber dam and adhesive around the
entire windshield.
CAUTION: Hold the piano wile as close to ihe wind-
shield as possible to prevent damage to the body
and dashboard.
WINDSHIELD
6. Carefully remove the windshield.

Rear Window
Removal
2DllDl
CAUTION:
. Put on gloves to protect your hands.
. Uso ssat covers to avoid damaging any surlaces,. Do not damage thg roar window dofogggr grid linss,
window antenna grid lines, and tsrminalg.
1. To remove the rear window, first remove the:. Trunk lid
. Rear seat cushion (see pages 20-79, 81). Rear seat side bolsters {4D, see page 20-79). Rear seat-back (2D, see page 20-81)
. Rear shelf {see pages 20-59, 61}
. Rear pillar trim {4D, see page 20-59). Side trim panel (2D, see page 20-61)
. Ouarter trim panel (2D, see page 20-61)
. Rear roof trim (see page 20-65)
2, Disconnect the rear window defogger connector
from each side.
3. Peel off the molding.
NOTE: When molding removal is difficult, cut the
molding with a knile.
F"*t,
MOLDING
ID_HESI.VE ---, ,/,/
REAR WINDOW
S
MOLDING
20-32
PIANO WIRE
4. Apply protective tape along the edge of the body as
shown. Using an awl, make a hole through the
adhesive from inside the car. Push the piano wire
through the hole, and wrap each end around apiece of wood.
ADHESIVE
REAR WINDOW
PROTECTIVETAPE
TAPE
REAR WNDOW
PIANO WIRE
PROTECTIVETAPE
With a helper on the outside, pull the piano wire
back and forth in a sawing motion, and carefully cut
through the adhesive around the entire rear win-
dow.
CAUTION: Hold the piano wiro as close to the rear
window as possibls to prcyent damage to the body.
6. Carefullv remove the rear window.
ADHESIVE