1996 HONDA CIVIC replace

Component Locations
Index (cont'd)
D16Y5, D16Y8 ongine:
RESONATOR
D16Y7 6ngin€:
AIR CLEANER IACLIReplacement, page 11-244
THROTTLE BODY (TBIInspection, page 1 1-247Removal, page 11-248Disassembly, page 11 249
THROTTLE CABLElnspection/Adjustment. page 1 1 -244
Installation, page 11 245
AIR {FIA} CONTROLVAIVE{'99 modeliD16Y8 6ngin6)Testing, page 11,250
POSITIVE CRANKCASEVENTILATION IPCV) VALVEInspection, page 11-266
AIR CLEANER IACLIReplacement, page 11,244
THROTTLE CABITf nspection/Adjustment. page 1 1,244Installation, page 1 1-245
.iBoov ffetInspection, page 11 247Removal, page 11,248Disassembly, page 1 1-249
POSITIVE CRANKCASEVENTILATION IPCVI VALVEInspection, page 1 1-266
1 1-10
RESONATOR

\-
816A2 engine:
AIR CLEANER (ACLI
Replacement, Page 11-244
THROTTLE BODY {T8)Inspection. page 11-247Removal, page 1 '1-248
Disassembly, page 1 1-249THROTTLE CABLElnspection/Adiustment, page 1 1 -244
lnstallation, page 1 1-245
POSITIVE CRANKCASEVENTILATION IPCVI VALVEInspection, page 1 1-266
11-11

How to Read Flowcharts
A flowchart is designed to be used from start to final repair. lt's like a map showing you the shortest distance. But beware:
lf you go off the "map" anywhere but a "stop" symbol, you can easily get lost.
tSrARTl(bold type)
FanoNl
@
tsroP I
{bold type)
Describes the conditions or situation to start a troubleshooting flowchart.
Asks you to do something; perform a test, set up a condition etc.
Asks you about the result of an action, then sends you in the appropriate troubleshooting direction.
The end of a series of actions and decisions. describes a final repair action and sometimes directs you to
an earlier part of the flowchart to confirm your repair,
NOTE:
. The term "lntermittent Failure" is used in these charts, lt simply means a system may have had a failure. but it checks
out OK at this time. lf the Malfunction Indicator Lamp (MlL) on the dash does not come on, check for poor connections
or loose wires at all connectors related to the circuit that you are troubleshooting (see illustration below)'
. Most of the troubleshooting flowcharts have you reset the Engine Control Moduls (ECM)/Powertrain Control Module
(pCM) and try to duplicate the Diagnostic Trouble Code (DTC). lf the problem is intermittent and you can't duplicate the
code, do not continue though the flowchart. To do so will only result in confusion and, possibly, a needlessly replaced
ECM/PCM.
. ,,Open" and "Short" are common electrical terms. An open is a break in a wire or at a connection. A short is an acci-
dental connection of a wire to ground or to another wire. In simple electronics, this usually means something won't
work at all. In complex electronics (like ECM's/PCM'sl. this can sometim€s mean something works, but not the way it's
suDDosed to.
toosE
1 1-103

I
Engine Control Module/Powertrain Control Module (ECM/PCM)
t'96 - 98 Models,'99 - 00 Dl6Y5 engine with M/Tl
L
NOTE: lf th is svmptom is intermittent, check for a loose fuse No. 25 {METER 7.5 A) in the
underdash {use/relay box, a poor connection at ECM/PCM terminal A18, or an intermit
tent ooen in the GRN/ORN wire between the ECM/PCM (A18) and the gauge assemblv.
ECM/PCM CONNECTOR A I32PIPGl {BLKI
Wire side ot female terminals
ECM/PCM CONNECTOR A (32P}
Wire side of female terminals
(cont'd)
11-107
The Malfunc{ion Indicator Lamp
{MlLl never comes on (even lor
two secondsl atter ignition is
turned on.
Turn the ignition switch ON (ll).
- Repair short or open in thewile botwoen No. 25 {M€TERI
17,5 Altus€ and gau99 assem'
bty.- Replaco No.25 IMETERI (7,5
A)tuse.
ls the low oil pressure light on?
Try to start the engine.
Does the engine stan?
Check lor an open in the wiles
{PG linosl:1. Turn the ignition switch ON (ll).
2. ldeasure vo ltage betweenbody ground and ECM/PCMconnector terminals A10 andA23 individually.
Check tor an open in the wire ot
bulb (MlL line):1. Turn the ignition switch OFF.
2. Connect the ECM/PCM con-nector terminal A'18 to bodyground with a jumper wire.3. Turn the ignition switch ON (ll).
Repair open in the wire(s)
between ECM/PCM and G101(localod at the thetmostat hous_ingl that had more than 1.0 V.
ls thore less than 1.0 V?
Substituto . known-good ECM/PCM and recheck. It symptom/indication go6s away, roPlace
the origin.l ECM/PCM.
- Repair open in th€ wiresbetwoen ECM/PCM lAl8l andgaug6 a$embly.- Replace the MIL bulb,
ls the MIL on?
Substitute a known-good ECM/
PCM and .echeck. lf symptom/indication goes away, replacothe origin.l ECM/PCM.
268l011
12l3t5t61tIt192022232a
2527xt30
MrL I luanpen wrnrIGRN/ORN) I
!1,

lFrom page 11 108)
Check for a short in the wire {MlLlinell1. Turn the ignition switch OFF.
2. Disconnect the Eclvl/PCM con-nector A (32P).
3. Turn the ignition switch ON {ll).
Ropair short to body gtound in
the wir. between the ECM/PCM
lA18) and MlL.ls the MIL ON?
Substitute a known-good ECM/
PCM and recheck. lt 3ymptom/indicaiion goes away, rePlace
ihe original ECM/PCM.
(From page 11 108)
Inspect Fl E/M (10 A) fuse in theundeFhood Iuse/relay box.
- Repair short in the wirg
b€tweon Fl E/M (15 A) luse
and PGM-FI main rolay.- Replace Fl E/M (15 Alfuse.
Inspect No. 13 FUEL PUMP (15 A)
fuse in the under-dash fuse/relaY
- Repait lhort in the wire
botween No. 13 FUEL PUMP
115 Al fuse and PGM-FI main
reray.- Roplace No. 13 FUEL PUMP115 Al tu3o.
Check for a short in a 3€nsor:1. Turn the ignition switch ON (lli.
2. Disconnecl the 3P connectorfrom each sensor one at time:
. TP sensor. EGR valve lift sensor (D16Y5
engrne). Fuel tank pressure sensor('96 D16Y8 engine (coupe),'97 D16Y7 engine (couPe:
KL model, sedan: KL (LX)
model),'97 D16Y8 engine
lcoupe: all models, sedan:KL model,'98-all models)
{To page 11 110)(cont'd)
1 1-109
!

PGM-FI System
(From page 11-109)
Replace the sensor that causedthe light to go out.Does the N4lL go OFF?
Check fo. a short in the wi.os(VCC lines):':. Turn the ignition switch OFF.2. Disco n n ect the ECM/PCMconnector D (16P).
3. Check for continuity betweenbody ground and ECM/PCMconnector terminals D4 andD10 individually.
Ropair short to body groundin the wire betweon ECM/PCM {O4) and MAP s6n3or.Repair short to body groundin the wire between ECM/PCM lD10l, the TP sensor, theEGR valve lift sensor {D16Y5engine) and/or the Fuel tankpressure sensor {'96 Dl6Ygengine lcoupe),'97 D16Y7engine (coupe: KL model,sedan: KL (LXl model), '97
D16Y8 engine (coupe: allmodels, sedan: KL model. €8-allmodelsl.
ls there continuity?
Check tor rn open in the wires(lGP lines):1. Disconnect the fuel injectorsand IAC valve connectors,2. Turn the ignition switch ON (ll).3. Meas u re voltage betweenbody ground and ECM/PCMconnector terminals A11 and424 indivjdually.- Repair open in the wirels)between ECM/PCM (A11,A24land PGM-Fl main relay.- Check for poor connectionsor loose wiras at the PGM-FImain relay,- Test the PGM-FI mdin relavlsee pag6 11-237).
ls there battery vohage?
Check for an open in the wires(LG line3):1. Reconnect all sensor connectors.2. Reconnect the ECM/PCM con-nector D (16P).
3. Turn the ignition switch ON (ll).4. Measure vo ltage betweenbody ground and ECM/PCMconnector terminals Ag andA22 individually.
Repair open in the wirolglb€twe€n ECM/PCM {A9, A22} andG101 that had more than 1.0 V.
ls there less than 1.0 V?
Substitute 6 known-good ECM/PCM and r€check. lf symptom/indication 9o€s away, replacethe original ECM/PCM.
Engine Control Module/Powertrain Control Module (ECM/pCMl
('96 - 98 Models, '99 - 00 D16Y5 engine with M/Tl (cont,dl
ECM/PCM CONNECTOR D {16P}
Wire side of female terminals
ECM/PCM CONNECTOR A (32P}
Wire side of female terminals
11-110
LG1
VCCl {YEL/RED}
IGP 1{YEL/BLKI
2I11
1213l5t6Itt8t9202321
25272a2930
IGP 2(YEL/BLKIv) (l
{8RN/BLK)
I258tol1'12tt11t5l617t8t920232a
2A2330
LG2{8RN/8LK}

PGM-FI System
(From page'11-111)
Check loi an open in the wires(lGP linesl:1. Disconnect the lueliniector andIAC valve connectors.2. Turn the ignition switch ON (ll).
3, Measu re voltage betweenbody ground and ECM/PCMconnector terminals 81 andBg individually.
- Repair open in the wiro(3)between ECM/PCM lBl, B9land PGM-Fl main relay.- Check tor poor connectionsor loose wires al the PGM-FImain relav.- Test tho PGM-FI main rehy(3.e page 11-237).
ls there battery voltage?
Check tor an open in the wires(PG, LG lines):1. Reconnect the fuel iniectorand IAC valve connectors.2. Measure voltage betweenbody ground and ECM/PCMconnector terminals 82, 810,820 and 822 individually.
Repair open in the wirels)between ECM/PCM and G 101llocated ai the l6ft side of thointaks m.nifoldl thrt h.d morethan 1.0 V.
ls there lessthan 1.0 V?
Check for a short in the wires
{VCCI, VCC2 lin6s}:Measure voltage between bodyground and ECM/PCM connectorterminals C19 and C28 individually.Check toa a 3hort in s 3ensor:While measuring voltagebetween body ground and ECM/PC[/t connector terminals C19and C28 individually, disconnectthe 3P connector of each sensorone at time:. MAP sensor. TP sensor. EGR valve. Fueltank pressure sensor
ls there approx.5 V?
Reoair short in lhe wire betwe.enMAP 3ansor, TP sensor, EGRvalve, Fuel tank pres3ure 3ensorand ECM/PCM {Cl9, C28).
ls there approx. 5 V?
Substiiute a known-good ECM/PCM and racheck. ll symptom/indicetion goes eway, replaceth6 original ECM/PCM.Replace tho sansor that had.pprox. 5 V.
Engine Control Module/Powertrain
('99 - 00 Model except Dl6Y5 (M/Tl
Module (ECM/PCM)
(cont'd)
Control
engine)
ECM/PCM CONNECTOR B {25P)
LG1 (BRN/BLKI
Wire side of female terminals
ECM/PCM CONNECTOR C (31P)
female terminalsvcc2IYEL/BLUIvccl{YEL/RED)
Wire side of female terminals
11-112

PGM-FI System
Manifold Absolute Pressure (MApl Sensor('99 - 00 Models except Dl6yS engine with M/T) (cont,dl
MAP SENSOn 3P CONNECTOB tcllilt
MAP(RED/GRNI
Wire side of female terminals
(From page 11 119)
Check for an open or shon in theMAP s€nsor:Check the MAP with the scantool.
ls approx. 2 kPa (15 mmHg,0.6 in.Hg) or less indicated?
Check tor a sho.t in lhe wire{MAP line):1. Turn the ignition switch OFF.2. Discon n ect the ECN4/pCN4connector C (31P).3. Check for continuity betweenthe MAP sensor connector No. 3terminal and body ground.
Repair short in the wire betweenECM/PCM {Cl7} and MAp s€n-sor.
Substitute a known-good ECM/PCM and rech6ck. lf no.mal MApis indicated, replace the o.iginalECM/rcM.
11-120