1999 HONDA CR-V canister

ldle Control System
ldle Speed Setting (cont'd)
38 - 0O mod6l3:
NOTE: Before setting the idle speed, check the follow-
ing items:- The MIL has not been reported on.- lgnition timing- Spark plugs
- Air cleaner- PCV system
1. Start the engine. Hold the engine at 3.000 rpm with
no load (in Park or neutral) until the radiator fan
comes on, then let it idle.
Connect a tachometer.
Disconnect the IAC valve 2P connector and the EVAP
purge control solenoid valve 2P connector.
CONTROLSOLENOID VALVE
SOLENOID VALVE
lf the engine stalls, restart the engine with the accel-
erato. pedal slightly depressed. Stabilize the rpm at
1,000, then slowly release the pedal until the engine
idles.
Che€k the idle in no-load conditions: headlights, blow-
er fan, rear defogger, radiator fan, and air conditioner
are not operating,
ldle speed should bo:
480 t 50 rpm {in PErk or noutrall
11-170
lf necessary, adjust the idle speed, by turning the
idle adjusting screw.
After adjusting the idle speed, recheck the ignition
timing (see section 4). lf it is out of spec, go back to
steo 4.tDt.E
6. Turn the ignition switch OFF.
7. Reconnect the 2P connectors to the IAC valve and
the EVAP purge control solenoid valve, then do the
ECM/PCM reset procedure.
8. Restart and idle the engine with no-load conditions
for one minute, then check the idle speed.
ldle speod should be:,98 model:
750 t 50 rpm tin Park or neutral)'9!l - 00 modsls:
730 i 50 lpm lin Psrk or neutral)
NOTE: lf the idle speed increases to 780 t 50 rpm(770 1 50 rpml*, this means the EVAP system is
purging the canister. To stop the purging temporari-
ly, raise the engine speed above 1,000 rpm with the
accelerator pedal, then slowly release the pedal.*: '99 - 00 models
9. Let the engine idle for one minute with the head-
lights (Low) ON, and check the idle speed.
ldle speed should be:
38 mod6l:
750 f 50 rpm (in Palk or neutrall'99 - 00 modols:
730 t 50 rpm (in Palk or neutral)
10. Turn the headlights off. Let the engine idle for one
minute with the heater fan switch at Hl and air con-
ditioner on, then check the idle speed.
ldls spqed should be:'98 model:
780 t 50 rpm (in Park or neutrall'99 - 00 mod€ls:
7701 50 rpm lin Park or neutral)
lf the idle speed is not within specification. see the
Symptom Chart on page 11-64.
ADJUSTING
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'97 model:
Check all hose clamps, and retighten if necessary.
FUELFILTER
/\
{"2
,"1<,, I___--tJ
B
FUEL TUBE/OUICK-CONNECTFITTINGS
EVAPORATIVEEMISSION {EVAP}CONTBOLCANISTER
'^s
,4\-') |Ift q'l I
/'------/
/B,To FUELPRESSUREREGULATOR
10-14mm(0.39 - 0.55 inl
(cont'd)
11-173
Clamp in the middle
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EVAP PURGE CONTROL SOLENOID VALVE DUTY CONTROLLED AFTER
STARTING ENGINE
ENGINE COOLANT TEMPERATURE ABOVE 154"F (68'C)
Evaporative Emission (EVAP) Controls
Description:
The evaporative emission controls are designed to minimize the amount of fuel vapor escaping to the atmosphere. The
system consists of the following components:
A. Evaporative Emission (EVAPI Control Canister
An EVAP control canister is used for the temporary storage of fuel vapor until the luel vapor can be purged from the
EVAP control canister into the enqine and burned.
B. Vapor Purge ConirolSystem
EVAP control canister purging is accomplished by drawing fresh air through the EVAP control canister and into a pon
on the intake manifold. The purging vacuum is controlled by the EVAP purge control solenoid valve.
C. Fuel Tank Vapor Control System
When fuel vapor pressure in the fuel tank is higher than the set value of the EVAP two way valve, the valve opens and
regulates the flow ot fuel vapor to the EVAP control canister.
'97 model:
EVAPPURGECONTROL
VALVEFromNo. 15BLK/ /ALTERNATORYEL I sP SENSOR r7.s At(in the under-dashfuse/relay box)
VARIOUSSENSORFEESH AIF
BLK
I
FUEI- TANK
(cont'd)
11-203
INTAKE MANIFOLD
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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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'97 model:
The scan tool indicates Diagnostic Trouble Code (DTC) P0441: Evaporative Emission (EVAP) control system
insufficient purge flow.
Description
By monitoring the purge line vacuum with the MAP sensor, the PCM can detect insufficient EVAP control system purge
flow.
Possiblo Cause
. EVAP Purge Control Solenoid Valve
. EVAP Purge Control Solenoid Valve Circuit
. EVAP Control Canister
. Vacuum Lines
. PCM
Troubleshooting Flowchart
EVAP PURGE CONTROL
SO1TNOID VALVE 2P
CoNNECTOR (C108)
(v)
YL
Wire side of female
termrnals
(cont'd)
11-205
Th€ MIL has b€en reooited on.DTC P0441 is .tored.
Problem verificationl1. Start the engine. Hold theengine at 3,000 rpm with noload (in Park or neut.al) untilthe radiator fan comes on.2. Do the PCM Reset Procedure.3. Connect the SCS service con-nector,4. Test drive under following con'ditions on the road.- without any electrical load- Transmission in @ or @position- Engine speed between1 ,2OO - 2,4OO rpfi.- Decelerate from 50 mph (80
km/h)to 15 mph (24 km/h)Intermittent trilure, sydern is OKat this time. Check for Door con-nections or loose wir€3 at C108
IEVAP purge control solonoidvalvol .nd at the PCM.
ls DTC P0441 indicated?
Check tor an open in the wire (lcl
linel:1. Turn the ignition switch OFF.2. Disconnect the EVAP purge
control solenoid valve 2P con-nector.3. Turn the ignition switch ON (ll).
4. Measure voltage between bodyground and the EVAP purge
control solenoid valve 2P con-nector terminal No. '1,
R€pafu open in thc wir6 b€tw€enthG EVAP purge control solenoidvalve and the No. 15 ALTEBNA-TOR SP SENSOR (7.5 A)fuse.
ls there batlery voltage?
(To page 11'206)
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Chack iho EVAP purge controlsolenoid valve:1. Disconnect the vacuum hosetrom the EVAP controlcanister.2, Connect the vacuum pump tothe hose and apply vacuum,
Does it hold vacuum?
Chgck thg EVAP control csnbter:1. Reconnect the vacuum hose tothe EVAP control canister.2. Connect a vac!um gauge tothe purge air hose.3. Connect PCM connector terminals A15 and 410 with ajumper wire.4. Stan the engine.5. Check the vacuum.
Check the EVAP two way valve(see page 11'224).
Does the EVAP two way valvework properly?Rapbce the EVAP two wey valve.
Substitute a known-good PCMand rechock. It symptom/indica-tion gocs away, roplacg tho origi-nrl rcM.
(From page 11-206)
JUMPEF WIRE
<\
EVAP CONTNOLCANISTER
VACUUMPUMPIGAUGE,0-30 in.Hg4973X -
0il1 -
xxxxx
VACUUM/PRESSUREGAUGE0-4 in.Hg07JA2 - ml(x)o8
wire side of female terminals
{cont'd)
-20711
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EVAP purge control 3ol€noidvalve test.{Tho continu.tion of DTC Plil56
trouble3hootin9.)
Check the EVAP purge control
solenoid valve:1. Disconnect the vacuum hosetrom the EVAP control canis-
ter, and connect a vacuumpump to the hose.2. Turn the ignition switch ON (ll).
3. Apply vacuum to the hose.
EVAP purge contlol solenoidv.lvo is OK. Do the EVAP bypai3
solenoid valve test (see Page 11-
2161
Does the valve hold vacuum?
Check tho EVAP purge control
solenoid valve:'t. Turn the ignition switch OFF.2. Disconnect the EVAP Purgecontrol solenoid valve 2P con-nector,3. Check for continuity between
the EVAP pu rge controlsolenoid valve 2P connectorterminal No.2 and bodYground,
Check for s short in the wire
{PCS linel:1. D iscon nect the ECM/PCMconnector A {32P).2. Check for continuity betweenthe EVAP purge controlsolenoid valve 2P connectorterminal No. 2 and bodyground.
neprir short in tho wite bot$reon
the ECM/FCM lAGl and thc EVAPpurge control 3olenoid valve.ls there continuity?
Substitut€ a known-good ECM/
PCM and recheck. lf symptom/indication goe3 away. repl.ce
thc originsl ECM/PCM.
VACUUMPUMP/GAUGE,0 - 30 in.HgA973X - 041 -
xxxxx
EVAPCONTROLCANISTER
EVAP PURGE CONTROL SOLENOIDVALVE 2P CONNECTOR (Cl08}
Wire side offemaleterminals
(cont'd)
-21511
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EVAP control canister vent shut
valve l€st,lThe conlinualion ot DTC P1456
troubleshooting.)
Check the EVAP control cankter
vent 3hut valve:1. Disconnect the vacuum hose
from the EVAPthree way valve,
and connect a vacuum PUmPto the hose.2. Turn the ignition switch ON (ll).
3. Apply vacuum to the hose
EVAP control crnisier vent lhul
valve is OK. Do the v.cuum
hoses and connections te3l lseepage 11-218).
Does the valve hold vacuum?
Chock the EVAP control canbtel
vent shul valvo:1. Turn the ignition sw;tch OFF.
2. Disconnect the EVAP controlcanister vent shut valve 2P
connector.3. Check for continuity betlveen
the EVAP control canister vent
shut valve 2P connector termi-nal No. 1 snd body ground.
Roplac€ the EVAP contlol canbt€]venl shut valve and O-ring.
Chock lor a short in the wire(VSV lino)r1. Disco n nect the EcM/PCN4connoctor A (32P).
2. Check for continuity betweenthe EVAP control canister vent
shut valve 2P connector termi-
nal No. 1 and body ground.
Reorir 3hort in tho wiro bgtweonthe EC1I/I/PCM lAal .nd the EVAP
codrol canbtor vent shut valv6.
Substitute a known.good ECM/
PCM and recheck. lf symptom/indicrtion goes awaY, replace
the original ECM/PCM.
VACUUMPUMP/GAUGE,0 - 30 in.Hg
A973X - 041 -
XXXXX
EVAPTHREE
VALVEEVAPCONTROLCANISTER
EVAP CONTROLCANISTER VENT SHUTVALVE 2P CONNECTOR IC361)
r+l1t2l
f1 VSV
(o) tLT cnrulwxrt
1
Wire side of female terminals
EVAPCONTROLCANISTERVENTSHUTVALVE
O.RINGReplace.
ILT GRN/WHT)
(cont'd)
-21711
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