2000 HONDA CR-V Neutral switch

PGM-FI System
'99 - 00 models:
- The MIL has bsen reported on.- DTC P0131 ir storod.
Problem ve fication:1. Do the ECM/PCM Reset Pro-cedure,2. Start the engine. Hold theengine at 3,000 rpm with noload {in Park or neutral) untillhe radiator tan comes on.3. Check the Primary HO2S(Sensor 1) oltput voltage withthe scan tool during accelera-tion using wide op€n throttle.
Inl.rmittant failura, 3yrtam i! OKat thb tim.. Ch.ck tor poor con-nectiona oa looaa wlraa al C111{Pri|n.ry HO2S, Son3or 1l .nd .ttho ECM/FCM,
Does the voltage stay at 0.5 Vor less?
Check tho fuel pressure (see pago1r,178).
R.p.ir th. fu€l lupply ry!t.m.
Chock lor a short in tho HO2S:1. Turn the ignition switch OFF.2. Disconnect the Primary HO2S(Sensor 1) 4P connector.3. St6rt the engine and lot it idle.4. Check the Primary HO2S(Sensor 1) output voltage withthe scan tool,
Does it stay 6t 0.5 V or less?Rephc. th6 HO2S (S.n3or 11.
Chock for a short in tho wirc(PHO2S lino):1. Turn the ignition switch OFF.2. Disconnect the ECM/PCM con-nector C (31P).
3. Check tor continlity betweenthe Primary HO2S {Sensor 'l}
4P connector terminal No. Iand body ground.
Ragah rhort in tha wira balwoanth. ECM/PCM {Cl61 rnd thcPrirn.ry HO2S (S.n3or 11.
Substltut6 a known-good ECM/PCM and recheck. lf rymptom/indicrtion 00os away, raplaco thcoriginal ECM/PCM.
Primary Heated Oxygen Sensor (Primary HO2SI (Sensor 1l (cont'd)
PRIMARY HO2S (Son.or 1l aP CONNECTOR |C111)
PHO2S T--1rwHTr f-T---]
--1 1 2lI t--- 1t6)lslrlv L__r__J
_L
Wire side ol female terminals
11-112
www.emanualpro.com

The scan tool indicates Diagnostic Trouble Code (DTC) P0132: A high voltage problem in the Primary HeatedOxygen Sensor {Primary HO2S) (Sensor 1) circuit.
'97 - 98 models:
PHO2S
IWHTIsG2IGRN/BLK}
Wire side ot female terminals
PCM CONNECTOR D {16PI
JUMPER WIRE
PHO2S IWHTISG2 IGRN/BLK}
Wire side of temale terminals
I
(cont'dl
11-113
Problem verification:1. Do the ECM/PCM Resot Pro,ceoute,2. Start the engine. Hold theengine at 3,000 rpm with noload (in Park or neutral) untilthe radiator fan comes on.3. Test-drive with the Ay'T in Eposition (M/T in 4th gear).4. Check the Primary H02S{Sensor 1}output voltage withthe scan tool during decelera-tion using completely closedthrottle.
Intormittent l.ilure, 3ystem ia OKat thb timo. Chcck fo. poor con-nections 01 looso wi.es at C111{Prim!ry HO2S, Sensor 1} andECM/PCM.
Does the voltage stay at 1.0 V
Check for an open in th6 PrimaryH()2S:1. Turn the ignition switch OFF.2. Disconnect the Primary HO2S(Sensor 1) connector-3. Connect the Primary HO25lSensor 1) 4P connector termi-nals No. 1 and No. 2 with ajumper wire.4. Turn the ignition switch ON (ll).5. Check the Primary HO2S(Sensor 1) output voltage withthe scan tool,
ls there 1.0 V or more?
Ch€ck for an opon in the wires(PHO2S, SG2linesl:1. Turn the ignition switch OFF.2. Connect PCM connector ter-minals D7 and Dl1 with a
3. Turn the ignition switch ON (ll).4. Check the Primary HO2S{Sensor 1) output voltage withthe scan tool.
Roprir opon in the wire betweontho PCM {D7 01 D11l and thePrimsry HO2S {S6nsor 1).
ls there 1.0 V or more?
{'97 model}
{To page 11-114)
www.emanualpro.com

'99 - 00 modols:
Th6 Mll has b€on reDortod on.DTC ml32 is itorod.
Problem vorification:'1. Do the ECi!4/PCM Reset Procedure,Start the ongine. Hold theengine at 3,000 rpm with noload (in Park or neutral) untilthe radiator fan comes on.Check the Primary HO2SlSensor 1) output voltage withthe scan tool during decelela-tion using completely closedthroftle.
Int.rmitt .fi tailuro, syltom b OKat thit tima. Check for poor con-nactiona oi loo3a wirar !t Cltl(Primrry HO2S, S.nror 1) .nd .tth. ECM/FCM.
Doos the voitage stay at 1.5 Vor more?
Check for an opsn in the PrlmaryHO2S:1. Turn the ignition switch OFF.2. Disconnect the Primary HO2S(Sensor 1)connector.3. Connect the Primary HO2S(Sensor 1) 4P connector t6rmi-nals No. 1 and No. 2 with a
iumperwire.4. Turn the ignition switch ON (ll).
5, Check the Primsry H02S(Sensor 1) output voltage withthe scan tool,
lsthere 1.5 V or more?
Check for an op6n in th6 wiro{PHO2S line):1. Turn tho ignition switch OFF.2. Connect ECM/PCM connectorterminals C16 and C18 with a
iumper wire.3. Turn the ignition switch ON lll).4. Check the Primary HO2S(Sensor 1) output voltage withthe scan tool.
Ropair opon in thc wire bc{w.cnthe ECM/PCM {Cl6}.nd thePrimary HO2S {S€nror 1}.ls there 1.5 V or more?
Substituto a known-good ECM/PCM snd rochock. lf 3ymptom/indicetion go€a awry, roplaca thoorigin.l ECM/PCM.
PRIMARY HOzS (S6n!or 1l aPCoNNECTOR lcltl)
Pt()2sIWHTIsG2{GRN/BTJ(I
Wire side of tem6le terminsls
ECM/PCM CONNECTOR C (31P}
IGRN/BLKI
JUMPER WIRE
Wire side ol temale t6rmin6ls
(cont'd)
-1 15
2789
/1617't819120A22
23E29g)31
PHO2S {WHTIsG2
11
www.emanualpro.com

Secondary Heated Oxygen Sensor (Secondary HO2S) (Sensor 2)
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.nlor 2)4P CONNECTOB lC721l
Wire side of lemale terminals
(cont'd)
11-117
The MIL hrs been reported on.DTC P0137 is stored.
Problem veritication:1. Do the ECM/PCM Reset Pro'cedure.2. Start the engine. Hold theengine at 3,000 rpm wilh no
load (in Park or neutral) untalthe radiator {an comes on,3. Check the Secondary H02S
lSensor 2) output voltage at3,000 rpm with the scan tool.
lnlermittent failure, 3ystem i5 OK
at this time. Check tor Poor con'
noction3 or loose wires at C127
{locatod on ECM/PCM bracket},C721 (Secondary HO2S, Sensor2l and at the ECM/PCM.
Does the voltage stay at 0.3 V
or less?
Check for a short in the SecondaryHO2S:1. Turn the ignition switch OFF.2. Disconnect the SecondaryHO2S lSensor 2) 4P connector.3. Start the engine.4. Check the Secondary HO25(Sensor 2) output with the scantool.
Check lor a short in the wire(SHO2S linel:1. Turn the ignition switch OFF.2. Disco n nect the ECM/PCMconnector {D (16P}, A (32P}').
3. Check for continuity betweenthe Secondary HO2S (Sensor
2i 4P connector terminal No. 1and body ground.
Reoair short in the wire b€twoen
rhe ECM/PCM |D14, 423*l and
the Secondary HO2S {Sensor 2).
Substitute a known-good ECM/PCM and rocheck. lf symptom/indication goes away, replacethe original ECM/PCM.
*: '98 - 00 modeis
www.emanualpro.com

PGM-FI System
Secondary Heated Oxygen Sensor (Secondary HO2SI (Sensor 2l (cont'dl
The scan tool indicates Diagnostic Trouble Code (DTC) P0138: A high voltage problem in the Secondary Heated
Oxygen Sensor (Secondary HO2S) (Sensor 2) circuit.
SECONDABY HO2S (Sonror 2)1P CONNECTOR rC721 l
sHo2s{WHT/REDI
sH()2sGIGFN/WHTI
Wire side of female terminals
PCM COI{NECTOR D {16PI
sHo2sG(RED/YELI
JUMPER WIRE
Wirc side ol lemale terminals
{To page 11-119)
1 1-1 18
The MIL hra b€on Eported on,OTC m138 b stor.d.
PJoblcm v6dtic.tion:1. Do the ECM/PCM Resot Pro-cedure,Start the engine. Hold theengine at 3,000 rpm with noload (in Park or neutral) trntilthe radiator lan comes on.Check the Secondary HO2S(Sensor 2) outpl.rt voltage at3,000 rpm with the scan tool.
Int.rmitto tailurc, syst.m b OKrt ihi! timo. Chack fo. poo. oon-noctioni or looaa wiiaa at C127lloc.ted on EcM/PcM br.cket),C721 (Second!ry llO2S, Sonlol2).nd at th. ECM/PCM.
Does the voltage stay at 0.6 Vor more?
Chock for an opon in the SocondaryHO2S:1. Turn the ignition switch OFF.2. Disconnect the SecondaryHO2S (Sensor 2) 4P connector.3. Connect the Socondary HO2S(Sensor 2) 4P connector ter-minals No. 1 and No. 2 with a
4. Turn the ignition switch ON {ll}.5. Check the Secondary HO2S{Sensor 2) output voltage withthe scan tool.
ls there 0.6 V or more?
Ch6ck for an open in thg wiro3(SH()2S, SG2 line3l:1. Turn the ignition switch OFF.2. Connect rcM connector termi-nals 014 and D13 with a
J!mper wite.3. Turn the ignition switch ON (ll).
4. Check the S€condary HO2S(S€nsor 2) output voltagewith the scan tool.
Rapair op6n in tho wir. b€{woantho PcM lDla or Dl3l .nd thoS.condlry HO2S {Senlor 21.
lsthere 0.6 V or more?
('97 model)
www.emanualpro.com

PGM-FI System
Knock Sensor {KSl
('99 - 00 models) The scan tool indicates Diagnostic Troublo Code (DTC) P0325: A malfunction in the circuit ofthe Knock Sensor (KS).
ECM/PCM CONNECTOR C 131P}
Wire side of female terminals
KS 1P CONNECTOR IC13?'
KSIRED/BLU)
KS(BED/BLU)
Wire side ol femaletermtnals
ECM/PCM CONNECTORc (31P)
- The MIL has been rooorted on.- DTC m325 is storod.
Problem verification:1. Do the ECM/PCir, Reset Procedure,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 for at least 60 sec-onds,
Intermittent lailu.e, 3ystom is OKat thi3 tim. (te3t drive m.y benacalLrYr.Chock to. poor connsctions olloora wiros rt C137 lknock aon-.o. (KS)) and ar the ECM/FCM.
Ch€ck tor a short in the wir6 {KSlinel:1. Turn the ignition switch OFF.2, Disconnect the knock sensorlP connector.3. Check lor continuity betweenECM/PCM connector terminals C3 and body ground.
Replil rhort in the n irg b6{wocntho ECM/PCM lc:ll and the knocks€ngr1.
Check fo..n open in the wire{KS line):Check for continuity betweenECM/PCM connector terminal C3and knock sensor connector ter,minal No. 1.
B.pair opon in the wirc lrotweenlho ECM/PCM lctl and thc knockacnsor.
ls there cont;nuity?
Substitute a known-good knocksensor and recheck.
ls DTC P0325 indicated?Bcpl.ce the original knock 3€nsor,
Substituto a known-good ECM/PCM and .echeck. lf 3ymptom/indication goes away, replacethe original ECM/PCM.
NOTE: Torque the knock s6nsor to31 N.m (3.2 kgl.m, 23 lbf.ft).
1 1-130
Wire side ot female terminals
www.emanualpro.com

Barometric Pressure (BARO) Sensor
The scan tool indicates Diagnostic Trouble Code (DTC) P1106: A range/performsnce problem in the Barometric
Pressure {BARO) Sensor circuit.
The MIL has been reDorted on.OTC Pl106 b slored.
Problem ve.ification:1. Oo the ECM/PCM reset pro'
ceoure.2. Start the engine. Hold theengine at 3,000 rpm with noload (;n Park or neutral) untilthe radiator lan comes on, thenlet it idle.3. Connect the SCS service con-nector,4. Test'drive with the A/T in Eposition, M/T in 4th gear.
5. Accelerate Ior five secondsusing wide open throttle.
Intermittent fsilure, sy3tom i5 OKat this time.ls DTC P1106 indicated?
Substitute a known-good ECM/PCM .nd recheck. It symptom/indication goes away, replace theorigioal ECM/PCM.
fTiloz l
tP11o8l
The scan tool indicates Diagnostic Trouble Code (DTC) P1107: A low
The scan tool indicates Diagnostic Trouble Code (DTC) Pl108: A
circuit.
voltage problem in the Baro sensor circuit.
high voltage problem in the Baro sensor
- The MIL h.3 b€en roport€d on.- OTC Pl10? or Pl108 i3 stored.
Problom veritic.lion:L Do the ECM/PCM Reset Pro-cedure.2. Turn the ignition switch ON (lli.
Intarmittoni failure, lystom b OKat thb time.ls DTC P1107 or P1108 indicated?
Sub3tituto a known-good ECM/PCM and rcch6ck. ll symptom/indication 9oo3 away. .oplacorho o.igin.l ECM/PCM.
www.emanualpro.com

Alternator (ALT) FR Signal
This signals the ECM/PCM when the Alternator (ALTI is charging.
,97 modet: PCM GONNECTORS
wire side of female terminals
ALT CONNECTOR (C1O5I
lPr-F- ALT F
lll2llw|{frREDl|3.r-'l-
lruueen wne
c (31P|
wire side ol f€male terminals
PCM CONNECTOR C I31P)
3Pr
JUMPERWIRE
Inspection ot ALT FR Signal.
Check lor a short in the wire
{ALT F line}:1. Disconnect the 4P 13Pi* connector from the ALT.2. Turn the ignition switch ON (ll)
3, Measure voltage betweenPCM connector terminals C17
and A9.Check for a short in the wire(ALT F linel:1. Turn the ignition switch OFF.2. Disconnect the negative bat'tery cable from the battery.3. Disconnect PCM connector C(31P).
4. Check for continuity betweenbody ground and PCM connector terminal C17.
ls there approx. 5 V?
Check th€ ope.ation of the ALT:
1. Turn the ignition switch OFF2. Reconnect the ALT 4P {3Pi*connector to the ALT.3. Start the engine. Hold theengine at 3,000 rpm with no
load (in Park or neutral) untilthe radiator fan comes on,
then let it idle.4. Measure voltage betweenPCM connector terminals C17and A9.
Ropeir short in the wir6 betweonthe PCM lC17l and the ALT.
Substitut. a known-good PCM
and recheck. lf prescribed volt-
age is now availablo, replace the
originalPCM.
Does the voltage decrease when
headlights and rear defogger are
turned on?ALT FR signal b OK.
Ch€d( for an op€n in tho wire IALTF linel:1. Turn the ignition switch OFF.2. Disconnect the negative bat-tery cable lrom the battery.3. Disconnect PCM connector C(31P).
4. Disconnect the 4P (3P)* con-nector lrom the ALT.5. Connect the ALT 4P (3P)* con-nector terminal No. 4 (No. 1)*to body ground with a iumper
6. Check for continuity betweenbody ground and PCN4 con'nector terminal Cl7.
Repair open wi.e between thePCM lCl7l and the ALT.ls there continuity?
ALT F IWHT/REDI
Wire side of female terminals
1 1-159
www.emanualpro.com