1999 HONDA CR-V Evap bypass

Gomponent Locations
Index lcont'd)
'99 - (X) modols:
FUEL TANKReplacement,page 11-191
FUEL FEED PIPE
FUEL FILTERReplacement, page 11 182
FUEL VAPOR PIPE
FUELFITTINGS
FUEL PUMPTesting, page '11 183Replacement, page 1 1_183FUEL GAUGE SENDING UNITTesting, page 11-185
FUEL FILL CAP
EVAPORATIVE EMISSIONIEVAP) CONTROLTroubleshooting, page 1 1-213
FUEL PULSATION DAMPER
FUEL RAIL
FUELReplacement, page 1 1-179
EVAPORATIVEEMtSStON
IEVAP)CONTROLCANISTERVENTSHUT VALVETroubleshooting,page 11-213FUEL TANK PRESSURESENSORTroubleshooting, page 1'l'208
EVAPORATIVE EMISSION{EVAP) TWO WAY VALVETesting, page 11-224
FUEL PRESSUREREGULATORTesting, page 11-181Replacement, page 11 181,CONNECT
PrecaLrtions, page 1 1-175Disconnection, page 1 1-175Connection, page 176
EVAPORATIVE EMISSION{EVAPI BYPASSSOLENOID VALVETroubleshooting, page 11 213
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System Description
I
I
I
Vacuum Connections (cont'dl
'98 model:
C PRIMARY HEATEO OXYGEN SENSOR (PRIMARY HO2S,
SENSOR 1)(, SECONDARY HEATEO OXYGEN SENSOR ISECONDARYHO2S, SENSOR 2)(!)\\\\ss\SNBSS\\\ETRESS\RE\\NQ\SE\SSR
G) ENGINE COOLANT TEMPERATUBE (ECT) SENSOR
O INTAKE AIR TEMPERATURE {IAT} SENSOR
@ CRANKSHAFT SPEED FLUCTUATION (CKFI SENSOR
O IDLE AIR CONTROL (IAC) VALVE
@ FAST IDLE THERMO VALVE (A/T)
O THROTTLE BODY (TBI(0) FUEL INJECTOR.1' FUEL PULSATION DAMPER.14 FUEL FILTER(i FUEL PRESSURE REGULATOR14 FUEL PUMP(D FUEL TANK@ FUEL TANK EVAPORATIVE EMISSION {EVAPI VALVE
C] AIR CLEANER(O RESONATOR1iC POSITIVE CRANKCASE VENTILATION (PCV) VALVE
6 \$REE$IN gN NL$\C CON\ER\ER (TNC\
ti q rpos,xr E qN
ssros \E aP cqN\RoLcaNtsr€R
@ EVAPORATIVE EMISSION IEVAP) PURGE CONTROL
SOLENOID VALVEq3 EVAPORATIVE EMISSTON IEVAP} CONTROL CANISTER
VENT SHUT VALVE
@ EVAPORATIVE EMISSION (EVAP) TWO WAY VALVE
€i EVAPORATIVE EMISSION {EVAP) BYPASS SOLENOID
VALVE
€9 FUEL TANK PRESSURE SENSOROi EVAPORATIVE EMISSION {EVAP) THREE WAY VALVE
Qd PURGE JOINT
G/T only)
f
-i*'";-t
COOLANT Jt
U
11-12
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Engine/Powertrain Control Module Terminal Arrangement - 38 - 00 Models
ECM/PCM CONNECTOR A (32P}
,/./5aIsca
,/ l,/t5ItsTs
n2ls!uCI
Wire side ot female terminalsECM/FCM CONNECTOR A {32P)NOTE: Standard baftery voltage is '12 V.
D93criptionSignal
3BLU2WBS {EVAP BYPASSSOLENOID VALVE)Drives EVAP bvoass solonoid valve.With ignirion switch ON {ll)r battery voltage
LT GRNMHTVSV {EVAP CONTROL CANISTEB VENT SHUT VALVE)D.ives EVAP controlcanisler vent shutWith ig^ition switch ON (ll): battery voltage
5',BLUCRS (CRUISE CONTROL SIG'NAL)Shift Oown signalinputfrcm cruise conWhen cruise control is used: pulses
6RED/YEL
PCS (EVAP PURGE CONTROLSOLENOID VALVE)Drives EVAP purge controlsolonoid valve.With engins running, engine coolant, below 154'F(68'C)r battery voltageWith engine running, engine coolant, above 154"F{6a'C}r duty conl.olled
8ELIOWHTSO2SHTC (SECONDARVHEATED OXYGEN SENSORHEATER CONTROL)
Drives sacondary heated oxygen sensorWith ignition switch ON (ll): banery voltageWith fully warmed up engine running: duty
10BRNSCS (SERVICE CHECX SIGNAL)Detects seNics check conneclor signal(he signalcausing a DTC indicatjon)with rhe lerminal connected:0 vWith the rerminaldisconnectedrabout 5 v or
l4'rGRN/8LKD4IND (D4INDICATOR)+3DIND (D INDICATORTIDrives D4*3. Dr'indicaior light.W,rh 04' , O" indrcator light turned O batter,
With D4*3, D*. indicator light turned OFFr0 V
16GRNI/ELFLR (FUEL PUMP RELAY)Drivss fusl pump relay.0 V for iwo seconds after ru'nin9 ign'lion swilchON lll), then banery voltage
17AL|(/REDACC (I/C CLUTCH RELAY}Drives l,/C clurch rclay.With compressor ONr0 VWith compressor OFF: battery voltage
18GRN/ORNMIL (MALFUNCTION INDICA.TOR LIGHT)Driv€s MlL.With MlLturned ON:0 VWith MIL turned OFF: battery voltage
19BLUNEP (ENGINE SPEED PULSE)Outputs engine spsed pulse.With sngine runnin9: pulses
20GRNFANC {RADIATOR FAN CONTROL)Drives r6diator fan rslay.With radaator fan running:0 VWith radaatorfan stopped: battery vollage
218LU/t/ELK-LINESends and receiv€s scan toolsignal.With ignition switch ON (ll): p'rlses
23WHT/REDSHO2S (SECONDARY HEATEDOXYGEN SENSOR. SENSOR 2iDetects secondary h€at€d oxygen sensorWith throttle fully opened from idle wilh fullywalmed up engine: above 0.6 Vwith rhrottle quickly closed: below 0-4 V
21BLU/WHTSTS (STARTER SWITCH SIG,NAL}Dotocts srarter switch signal.Whh staner switch ON (lll): batlery voltageWith srarter switch OFF: 0 V
26GBNPSPSW {P/S PsESSUFESWITCH SIGNAL)Detecrs PSP switch signal.At idle with steeing wh€el in stBighl ahead position: 0 VAt idls with nee ng wheel al full lockr banory voltage
2fBLU/BEOACS (Ir'C SWTCH SIGNAL}D€tects ly'C switch signal.With Ay'C switch ON:0 VWith l/C swil€h OFF: about 5 V
2A'\WHT/NEDSLU {INTERLOCK CONTROLUNIT)Orives interlock control unil.With ignilion switch ON (ll)and brake pedaldepressed: battery vohage
29LT GRNPTANK (FUEL TANK PRES'SURE SENSOR)Detocts fueltank pressure sensor signal.With agnition switch ON (ll) and fuel fill capopensd; about 2.5 v
GBN/FEDEL (ELD}Detects ELD signal.Wirh paaing rightstumed on at idle:about 2.5 - 3.5 VWith low beam headlights tumed on at idle:about 1.5-2.5V
GRN/WHTBKSW (BRAKE SWTTCH)Dst€cts brake switch signal.Wirh brake pedal released:0 VWith brake pedal depressed: battery vollage
13: '98 modsl
15: USA(cont'd)
11-71
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Troubleshooting
Diagnostic Trouble Code (DTCI Ghart (cont'd)
r: These DTCS will be indicated by the blinking oJ the Malfunction Indicator Lamp (MlL) with the SCS service connectorconnected.**: The Di (E)*5 indicator light and the Malfunction tndicator Lamp (MlL) may come on simultaneously.*1: A[f *3;'97 model *5: '99 - 00 models*21M/f *4: '98 model
11-78
DTC
{MlL indication}Detection ltemProbable CausePagc
P1336 154)Crankshaft SpeedFluctuation SensorIntermittent Interruption
. CKF sensor
11-142
P1337 i54)Crankshaft SpeedFluctuation SensorNo Signal
CKF sensorCKF sensor circuitECM,FCM11-142
P1359 (8)Crankshaft Position/Too DeadCenter Sensorrcylinder PositionConnector Disconnection
' CKP/TDC/CYP sensor circuit11-146
P1361 (8)Top Dead CenterSensor IntermittentInterruption11-131
P1362 (8)Top Dead CenterSensor No SignalTDC sensorTDC sensor circuitECM/PCM11-131
P1381 (9)Cylinder Position SensorIntermittent Interruption
. CYP sensor11-131
P1382 (9)Cylinder Position SensorNo SignalCYP sensorCYP sensor circuitECM/PCM11-131
P1456n.* {90}
Evaporative EmissionControl System Leak Detected(FuelTank System)
Fuelfill capVacuum connectionFueltankFuel tank prossure sensorEVAP bypass solenoid valveEVAP two way valveEVAP control canister vent shut valveEVAP control canisterEVAP purge controlsolenoid valve
11-213
Pr457n.s {90)
Evaporative EmissionControl System Leak Detected(EVAP Control Canister Svstem)
Vacuum connectionEVAP control canisterFuel tank pressure sensorEVAP bypass solenoid valveEVAP two way valveEVAP control canister vent shut valveFueltankEVAP purge controlsolenoid valve
11-219
P1508 (14)ldle Air ControlValve CircuitFailure
IAC valveIAC valve circuitECM/PCM11-152
Pr607(-)Engine Control Module,PowertrainControl Module Internal CircuitFailure A
. ECM,FCM11-147
P1705P1706P1753P1758P1768
AutomaticTransaxle
Section '14
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PGM-FI System
System Description
INPUTS
CKP/TDC/CYP Sensor
CKF Sensor
MAP Sensor
ECT Sensor
IAT Sensor
TP Sensor
Primary HO2S
Secondary H02S
vss
KS*5
BARO Sensor
ELD*6
Starter Signal
ALT FR Signal
Air Conditioning Signal
Ay'T Gear Position Signal*1
Baftery Voltage (lGN.1)
Brake Switch Signal
PSP Switch Signal
Fuel Tank Pressuae Sensor*4. *5
Countershaft Speed Sensor*1
Mainshaft Speed Sensor*r
OVER-DRIVE Switch Signal*s
ENGINE CONTROL MODULE (ECM)/
POWERTRAIN CONTROL MODULE (PCM) OUTPUTS
|iuel 1"j""- Th,rhg ""d Drrafr";-l
Et*-.nt"tdt"cont.orl
to,r*,c;;trffi;]
l.----.---:. .Lrgnrnon |lmrng Lonrror I
Ecir/PcM B*k',p Fr""il]
m;"t-ll-r*'io*l
Fuel Injectors
PGM-Fl Main Relay (Fuel Pump)
MIL
IAC Valve
Ay'C Compressor Clutch Relay
Radiator Fan Relay
Condenser Fan Relay
ALT
tcM
EVAP Purge Control Solenoid
Valve
Primary HO2S Heater
Secondary H02S HeaterEVAP Bypass Solenoid Valve*a *5
EVAP Control Canister Vent Shut
DLC
Lock-up Control Solenoid Valve*l
Shift Control Solenoid Valve*1
Ay'T Clutch Pressure Control
Solenoid Valve*1
D4 Indicator Light'1 *3, *a
D Indicator Light,l *5
OVER-DRIVE OFF Indicator
Lighl*t *:
*1: A/T {3:'97 model'2: M/f +4:'98 model*5: '99 - 00 models"6: USA
PGM-Fl System
The PGM-Fl system on this model is a sequential multiport fuel injection system.
Fuel iniecior Timing and Duration
The ECM/PCM contains memories for the basic discharge durations at various engine speeds and manifold pressure. The
basic discharge duration, after being read out from the memory, is further modified by signals sent from various sensors
to obtain the final discharge duration.
ldle Air Control
ldle Air Control Valve (lAC Valve)
When the engine is cold, the Ay'C compressor is on, the transmission is in gear, the brake pedal is depressed, the P/S load
is high, or the alternator is charging, the ECM/PCM controls current to the IAC Valve to maintain the correct idle speed.
lgnition Timing Control
o The ECM/PCM contains memories for basic ionition timing at various engine speeds and manifold air flow rates.
lgnition timing is also adjusted for engine coolant temperature.
. A knock control system was adopted which sets the ideal ig nition timing for the octane rating of the gasoline used.*s
Other Control Funstions
1. Starting Control
When the engine is started. the ECM/PCM provides a rich mixture by increasing fuel injector duration.
2. Fuel Pump Control
. When the ignition switch is initially turned on (ll). the ECMiPCM suppli€s ground to the PGM-FI main relay that
supplies current to the fuel pump for two seconds to pressurize the fuel system.
. When the engine is running, the ECM/PCM supplies ground to the PGM-FI main relay that supplies current to the
fuel oumo.
. When the engine is not running and the ignition is on, the ECM/PCM cuts ground to the PGM-FI main relay which
cuts current to the fuel pump.
1 1-80
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Emission Gontrol System
Evaporative Emission (EVAP) Controls (cont'dl
'98 - 0O models:
EVAPTHREE WAYVALVE
EVAPCONTROLCANISTERVENT SHUTVALVE
'EL/BLU ._^_-:.*,".. <3|ltAIS"o[..^,
1in the under-dashtuse/relay box)
FrofiBLK/WHT < NO. 15
GRN/BLK
BLU
EVAPBYPASSSOLENOID
EVAP PURGECONTROLSoLENOtOVALVE
L LT GRN/WHT ,
RED/YEL
MANIFOLD
VARIOUSSENSOR
EVAPTWO WAYVALVEVALVE
FUEL TANK
SLK
11-204
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Emission Control System
Evaporative Emission (EVAPI Controls (cont,dl
1T1456I (conro)
€VAPBYPASSSoLENOtOVALVEECM/PCM CONNECTOR A I32P)
Wire side of female terminals
VACUUMPUMP/GAUGE.0 -30 in.HgA373X -
041 -
xxxxx
EVAP BYPASS SOLENOIDVALVE 2P CONNECTOR lcorlTl
2WBS(BLU}
II
Wire side offemaletermrnats
tGlIBLK/WHT}
EVAP bypa3s solenoid valve test.(The continuation ot DTC P1456troubleshooting.l
Check the EVAP bypass sotenoid
1. Disconnect the vacuum hosefrom the EVAP two way valve,and connect a vscuum pumpto the hose,2. Connect the ECM/PCM con-nector terminal 43 to the bodyground with a jurnper wire.3. Turn the ignition switch ON 0t).4. Apply vacuum to the hose.
EVAP bypass solenoid valve/EVAP two way valve is OK. Doth6 EVAP control crnister ventshut vafve le3t lso€ page 11-2'111.
Does the valve hold vacuurn?
Check for an op€n in the wir€(2WBS line):1. Turn the ignition switch OFF.2. Disconnect the EVAP bypasssolenoid valve 2P connector.3. Check for continuity betweenthe EVAP bypass so teno idvalve 2P connector terminalNo. 2 and body ground.
Repair open in the wire betweenthe EVAP bypass solenoid valv.and ECM/PCM lA3).
Chack tor an op6n in the wirellcl line):1. Turn the ignition switch ON l).2. Measure voltage between theEVAP bypass solenoid valve2P connector terminal No. land body ground.
Replace the EVAP byps.,s solonoidvatus and O-ring3.
Ropair o,pen in the wire botwoenth6 EVAP bypa$ sotenoid vatvoand No. 15 ALTERNATOR SpSENSOR (7.5 Altuso.
2WBS (BLU}
/3
7,x
4l6o/to -/
,/ 16 1718't920 211/z3
26 272A29solT32
JUMPER WIRE
11-216
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Emission Control System
Evaporative Emission (EVAP) Controls (cont,dl
iTl457l ("ont'or
APCONTROLCANISTER
Ropair op€n in th6 wire betweenthe EVAP purge control 3olenoidvelve and ths ECM/PCM (A61.
VACUUMPUMP/GAUGE, O-30 iN.HgA973X - 0rl -
xxxxx
'\)
Wire side of lemale terminals
EVAP PURGE CONTROL SOI.ENOIDVALVE 2P CONNECTOR (Cl08)
PCSIRED/YELI
femaletermanals
ECM/PCM CONNECTOR A {32P}
PCS (RED/YELI
,/3 458/'t0
,,/ 14 ,/'t61718l92024
,/ 262930
JUMPERWIRE
- The MIL has been reported on.- DTC P1457 is stored.{EVAP purge control solenoidvalve test.l*
Check the EVAP purge conrrol30lenoid velve:L Disconnect the vacuum hosefrom the EVAP conlrol canis,ter, and connect a vacuumpump to the hose.2. Connect the ECM/PCM connector terminal A6 to the bodyground with a jumper wire.3. Turn the ignition switch ON (tl).4. Apply vacuum to the hose.
EVAP purge control solenoidvalve is OK. Oo the EVAP bypasssolenoid valve t€3t {see psge 1l-221t.
Does the valve hold vacuum?
Check for an open in the wire(PCS line):1. Turn the ignition switch OFF.2. Disconnect the EVAP purgecontrol solenoid valve 2P connector,3. Check for continuity betweenthe EVAP pu rge controlsolenoid valve 2P connectorterminal No.2 and bodygrouno,
ls there continuity?
Check for an open in the wire(lGl line):1. Turn the ignition switch ON t).2. Measure voltage between theEVAP bypass solenoid valve 2pcoonector terminal No. 1 andbody ground.
ls there battery voltage?
Repah open in lhe wir6 betwoenthe EVAP pu.ge cont.ol solonoidvdlvo and No. 15 ALTERNATORSP SENSOR {7.5 Al fu!€.
*: Continued frr '98 model
1-220
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