1996 HONDA CIVIC 16p

t
'P SENSOR 3P CONNECTOR
Terminal side of male terminals
ECi'/PCM CONNECTOR D {16PI
TPS IRED/Btx)
IGRN/BLK)
t-
hm
sG2
6Ittotl12
tlt5ta
Wire side ol lemale terminals
lDl6Y5 engine
f
TPS IR€O/BLKISG2 IGRN/BLKI
{From page l1'132}
ls there approx. 0.5 - 0.9 k0?
Check for an opsn or 3hort in thoTP sensor:Measure resislance between theTP sensor terminal No. 2 and
No. 3 with the throttle fully closod.
ls there approx.3.6 - 5.4 k0?
Chock lor an open in the ECM/
PCM ITPS lin6l:1. Reconnect the TP sensor 3P
connector.2. Turn the ignition switch ON {ll}.
3. Measure voltage between
ECM/PCM connector terminals
Dl and D11.
Substitut. r known-good ECM/
PCM and r.ch.ck. lf pt6crib.d
vohrga i. now !Y!il.blo, lcpl.co
tho odginal ECM/PCM.
ls there approx. 0.5 Vwhen the
throttle is fully closed and
approx. 4.5 Vwhen the throttleis fully opened?
Check tor . short in tha TCM:
1. Turn the ignition switch OFF.2. Disconnect the 22P connectorfrom the TCM.3. Turn the ignition switch ON (ll).
/t. Measure voltage between ECMconnector terminals D1 andD11.
ls there approx.0.5 V when the
throftle is tully closed andapprox. 4.5 V whon the throttleis fully opened?
Ropair rhort in the wir€ bdtwconECM/PCM (D11, TCM and TP i.n.
30r,
1 1-133

PGM-FI System
Throttle Position (TP) Sensor (€6 - 98 Models, 39 - 00 D16Y5 engine with M/T)
The scan tool indicates Diagnostic Trouble Code (DTC) P0123: A high voltage problem in the Throttle Position(TP) sensor circuit.
TP SENSOR 3P CONNECTOR IC1lOI
sG2IGRN/BLKIvcc2{YEL/BLUI
Wire side of female terminals
ECM/PCM CONNECTOR D (16P)
SG2 (GRN/BLKI
Wire side of female terminals
1 1-136
The MIL has been reportod on.DTC P0123 is sto.ed.
Problom veritication:1. Turn the ignition switch ON {ll).2. Check the throttle positionwith the scan tool.
ls there approx. 10% when thethrottle is fully closed andapprox. 90o/o when the throttleis lully opened?
Intermittont tailuro, system is OKat thb timo, Check for ooor con-nociion3 or loos6 wiros at C110ffP s€nsor) and ECM/PCM.
Chgck to. an opan in the TP son-sot:1. Turn the ignition switch OFF.2. Disconnect the TP sensor 3Pconnector.3. Turn the ignition switch ON (ll).
4. At the harness side, measurevoltage between tho TP sensor3P connecter terminals No, 1and No.3.
ls there approx.5 V?
Ch.ck tor .n open in the wira(SG2 linel:Measure voltage between ECM/PCM connector terminals D10 andD11.
Repair op6n in the wire betwoenECM/PCM (D11) rnd TP s6nsor.ls there approx. 5 V?
Substitute a known-good ECM/PCM snd rech.ck. lf pra3cribed
voltago is now available, replscetho original ECM/PCM,

Primary Heated Oxygen Sensor (Primary HO2SI (Sensor 1)
('96 - 9b Models except Dl6Y5 engine with M/Tl
PHO29IWHT}
The scan tool indicates Diagnostic Trouble Code (DTC) P0132: A high voltage problem in the Primary Heated
Oxygen Sensor (Primary H02S) (Sensor'l) circuit.
PRIMARY HO2S (Sonso. 'll 4P CONNECToR
tc123t
sG2IGRN/BLKI
Wire side ot female terminals
ECM/PCM CONNECTOR D I16PI
JUMPER WIRE
PHO2S (WHT}SG2 IGRN/BLKI
Wire side of tem6le terminals
Probl€m verification:1. Do the ECM/PCM Reset Pro-
cedure.2. Start the engine. Hold the
engine at 3,000 rpm with no
load (in Park or neutral) until
the radiator fan comes on
3. Test-drive with the A/T in Eposition (M/T in 4th gear)
4. Check the PrimarY HO2S(Sensor 1) oLltPut voltage with
the scan tool during decelera'tion using completely closed
throttle.
Int.rmittont fiilur., system it OK
at thb timo. Chock for Poot con-
nections or loo3a wir63 at Cl23
lPrimarY HO2S, SensoJ 1l .nd
ECM/PCM.
Does the voltage stay at 1.0 V
or more?
Check for an open in the Primary
HO2S:1. Turn the ignition switch OFF.
2. Disconnect the Primary HO2S(Sensor 1) 4P connector'
3. Connect the PrimarY HO25
lSensor l) 4P connector termi-
nals No. 1 and No. 2 with a
4. Turn the ignition switch ON (ll).
5. Check the PrimarY H02S(Sensor 1i outPut voltage with
the scan tool.
lsthere 1.0 V or more?
Check for an open in the wiro
{PHO2S line):1. Turn the ignition switch OFF.
2. Connect EcM/PcM connector
terminals D7 and D11 with ajumper wrre,3. Turn the ignition switch ON lll)4. Check the PrimarY HO2S(Sensor 1) output voltage withthe scan tool,
Replir open in tho wirc b€twccnECM/PCM lo?) and Prim!.Y
HO2S lsonsor 1).ls there 1.0 V or more?
Substitute a known-good ECM/PCM and recheck. lf 3ymptom/indicetion goos awey, roplacethe oliginal ECM/PCM.
11-143

t
The scan tool indicates Diagnostic Trouble Code (DTC) P1168; A low voltage problem in the Primary Heated
Oxygen Sensor (Primarv Ho2S) (Sensor 1) LABEL circuit'
- The MIL has b6€n reponed on'
- DTC P1168 is storcd
Problem vedfication:
1. Do the ECM Reset Procedure
2. Start the engine.
3. Wait at least two minutes
lntalmittent failure' aYstom b OK
at thi3 time. Chock lor Poor con-
nection3 or loo3o wiro3 at C145
(Primary HO2S, S.n.or 1l and
ECM.
ls DTC P1168 indicated?
Chock th. ECM:
1. Turn the ignition switch OFF.
2. Disconnect the ECM connec'
tor D 116P).3. Check for continuity between
ECM connector terminal D7
and body ground
Sub3titut. e known-good ECM
6nd r.chock. lf rymptom/indica-
tion gocr away, r.Placs the origi_
nal ECM.
Check for t shott in lhg wire3
ILABEL line):1. Disconnect the Primary HO2S
(Sensor 1) 8P connector'
2. Check for continuitv between
ECM connector terminal D7
and body ground
Reoair short in the wir63 botlvoon
lhe Primary HO2S {Sensor 1} end
ECM (O71.
ECM CONNECTOR D {16PI
LABEL {WHTI
wire side of female terminals
LABEL (WHTI
(cont'd)

PGM-FI System
IiT-"-w Heated 9{ygglSensor (primary HO2SI (Sensor 1)(Dl6Y5 engine with M/Tl lconr'd)
1T1163 Ih" scan tool indicates Diagnostic Trouble code (DTc) P1169: A high volrage probtem in the pnmary Heated- Uxygen Sensor {primary HO2S) (Sensor .l) LABEL circuit.
PSTMARY HO2S (SENSOR 1l8p CONNECTOR (145)
LABEL IWHTI
ECM CONNECTOR O {16P}
(GRN/BLK)
female
IGRN/BLKI
- The MIL hrs been reported on.- DTC Pl169 i3 stored.
Problem verification:L Do the ECM Reset Procedure.2. Start the engine.3. Wait at least two minutes.
Intormittent f.ilure, sv*em b OKat this time. Check for poor con-n.ctions or loose wires at C145(Prim.ry HO2S, Sensor 1l andECM.
ls DTC P1169 indicated?
Ch€ck Ior an op6n in th€ wire(LABEL line):1. Turn the ignition switch OFF.2. Disconnect the Primary HO2S(Sensor 1) 8P connector.3. Turn the ignition switch ON (ll).4. Measure voltage betweenPrimary HO2S lsensor 1) 8Pconnector No, 4 terminal andbody ground.
Check lor an open in the wire{SG2linel:1. Turn the ignition swilch OFF.2. Disconnect ECM connector D(16P)trom the ECM.3. Check for continuity betlveenECM connector terminal D1land Primary HO2S (Sensor 1)8P connector terminal No. 3.
ls there approx. 5 V?
Ropair opon in the wires betweonlhe P.imary HO2S {Sensor 't} andECM tD7l.
R€pair open in th6 wire betweenthe Primary HO2S lsensor 1) andECM (011).
ls there continuity?
Roplace the Primary HO2S (Sen-sor 1).
123a5
689101t12
t3141516sG2
side ofe terminalstll
II-- rl
;G2
I2
6
34
8
11-152

Secondary Heated Oxygen Sensor {secondary HO2S) (Sensor 2l
*'t : D16Y8 engine*2:'99 - O0 m;dels except D16Y5 engine with M//T
The scan tool indicates Diagnostic Trouble Code (DTC) P0137: A low voltage problem in the Secondary Heated
Oxygen Sensor (Secondary HO2S) (Sensor 2) circuit'
SECONDARY HO2S ls.n.ot 2),rP CONNECTOR (C125, C782')
Wire side oI temale terminals
(cont'd)
1 1-153
- Tho MIL has been reported on- DTC P0137 is stored.
Problem verification:1. Do the ECM/PCM Reset Pro
cedure.2. Start the engine. Hold the
engine at 3,000 rpm wlth no
load (in Park or neutral) until
the radiator fan comes on
3. With the scan tool, check the
Secondary HO2S (Sensor 2)
output voltage at 3,000 rPm
lntermittent frilure, sYdem is OK
at this tim6. Check for Poor con'
nections or loolo wir.3 at C131t(locatod undor right.ido of desh)'
C432. {located under middle of
dashl, cl25 lc782lr {SecondaryHO2S) tsensor 2l .nd ECM/PCM.
Does the voltage staY at 0.3 V
or less?
Ch6ck tot a sho.t in the S€condery
HO23:'1. Turn the ignition switch OFF.
2, Disconnect the SecondarY
HO2S lSensor 2)4P connector.
3. Start the engine.
4. Check the SecondarY HO2S
lsensor 2) output with the scan
tool,
Check tor a short in the wire
{SHO2S linel:1. Turn the ignition switch OFF.
2. Discon n ect tho EcM/PCM
connector D {16P) {A (32P))*'
3. Check for continuity between
the SecondarY H02S (Sensor
2) 4P connector terminal No 1
and body ground.
R€pair short in tho wire bstwoen
ECM/PCM lD14 (A231*'| and
Secondarv HOzS (Sensor 2).
Substitute a known-good ECM/
PCM and recheck lf 3ymptom/
indicalion go€s awaY, tePltco
the oiigin.l ECM/PCM.

PGM-FI System
Knock Sensor (KSl ('96 - 98 D16Y5 engine with CW and'96 - 98 D16Y8
engine)
Forr-l I,3,.""""
tool indicates Diagnostic Trouble Code (DTC) P0325: A malfunction in the circuit of the Knock sensor
DIAPHRAGM
ECM/PCM CONNECTOR D {16PI
KS 2P CONNECTOR (Cl371
KS(RED/BLUI
KSIRED/BLU)
The MIL has bgen roportsd on.DTC PO:t25 is stored.
Problom veiilication:1. Do the ECM/PCM Reset Proce-oure,2. Start the engine. Hold theengine at 3,000 rpm with noload (in Park or neutral) untilthe radiator tan comes on,then let it idle.3. Hold the engine at 3,000 -
4,000 rpm tor at least 60 sec-onds.
Intermittenl fsilu16, 3y3l6m b OKat thi3 timg lteat drivo mav banoc63saryl.Chock tor poor conneclioni orloose wire3 b€twccn C137 {knocklen3or (KS)l and ECM/PCM.
ls DTC P0325 indicated?
Check for a short in tho wire {KSlinel:1. Turn the ignition switch OFF.2. Disconnect the knock sensor2P connector,3. Discon n ect the ECM/PCMconnector O (16P).
4. Check for continuity betweenECM/PCM connector termi-nals D6 and body ground.
Reo.ir 3hort in the wire betweenECM/PCM {DG) .nd knock 3.n-
Chock for an open in the wire(KS linel:Check for continuity betweenECM/PCM connector torminal D6and knock sensor 2P connectorterminal No. l.
Ropair open in the wire bgtweonECM/PCM lD6l and knock sen-3('t.ls there continuity?
Substitute a known-good knocksensor and recheck.
Rsplace th. o.igin.l knock s€nsor.
Substitute a known-good ECM/PCM end recheck. lf 3ymptom/indication goes rway, replacerhe original ECM/PCM.
Wire side of female terminals
1\
I
tert
,_-
eslnini
,--tl
le oI temrlsal€
121
189't01t12
13l4t5t6
11-170

Electrical Load Detector (ELDI {'96 - 98 Models,'tn - 00 D16Y5 engine with M/T}
The scan tool indicates Diagnostic Trouble code (DTC) P1297: A low voltage problem in the Electrical Load
Detector (ELD) circuit.
ELD 3P CONNECTOR (c35'rl
l-- ,ll l2l3l--f ..
ao (GRN/REDI
Y
ECM/PCM CONNECTOR O I16PI
Wire side of female terminals
Problem verification:'!. Do the ECM/PCM Reset Pro-
cedure.2. Sta rt the engine
3. Turn on headlightslntermittent tailure, sYstem is OK
at this time. Check for Poor con-
nection3 or loose wires at C131
tlocated under righl side of da3h).
C354 (ELDIand ECM/PCM.
ls DTC P1297 indicated?
Ch.ck lor short in the ELD:
Measure voltage between body
ground and the ELD 3P connector
terminal No.3.
ls there approx.4 5 V?
Check for a short in tho wile (EL
linel:1. Turn the ignition switch OFF'
2. Disconnect the ECM/PCM con
nector D (16P)
3. Check for continuity between
body ground and ECM/PCM
connector terminal D16
R6pair short in the wire between
ECM/PCM (D161and ELD.
Substitute a known-good ECM/
PCM and recheck lf symplom/
indication goes awaY, rePlace
the original ECM/PCM
ra
11-179