Fuel and HONDA CR-V 1999 RD1-RD3 / 1.G Manual PDF

Fuel Pump
Testing
lf you suspect a problem with the fuel pump, check that
the fuel pump actually runs; when it is oN (ll), you will
hear some noise if you hold your ear to the fuel fill port
with the fuel fill cap removed. The fuel pump should run
for two seconds when ignition switch is first turned ON (ll).
lf the fuel pump does not make noise, check it as follows:
1. Fold the left rear seat cushion forward, and remove
the base frame cover (see section 20).
2, Remove the access panel from the floor.
3. Make sure the ignition switch is OFF, then discon-
nect the fuel pumP 5P connector.
4. Connect the PGM-FI main relay 7P connector termr-
nal No. 4 and No, 5 with a jumper wire.
PGM.FI MAINRELAY 7P CONNECTOR (Cit:}2l
I'TtlJilt f -r'-r ll.l5l517l,frTt-,at\FUEL pUMp Lr- . tcl tyEL/cRNl
rYEL/cRNl IIJUMPER Wir€ side of
WIRE female terminals
5. Check that battery voltage is available between the
fuel pump 5P connector terminal No. 4 and body
ground when the ignition switch is turned ON (ll).
FUEL PUMP 5P CONNECTOR {C562}
12
3a5
lf battery voltage is available, check the fuel
pump ground. lf the ground is OK, replace the
fuel oumo.
lf there is no voltage, check the wire harness (see
page 11-188).
FUEL PUMP(YEL/GRNI
wire side offemale terminals
Raplac6mont
1. Fold the left rear seat cushion forward, and remove
the base frame cover (see section 20).
2. Remove the access panel from the floor.
3, Relieve the fuel pressure (see page 11-178).
4. Disconnect the fuel lines.
5. Disconnect the 5P connector from the fuel pump.
6. Remove the fuel pump mounting nuts.
7. Remove the fuel pump from the fuel tank.
Install the fuel pump in the reverse order of
removal.
8.
11-183
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Fuel Supply System
Fuel Gauge
Tssting
NOTE: Refer to section 23 for the fuel gauge system cir-cuit diagram.
'1. Check the No. 25 METER (7.5 A) fuse in the under-dash fuse/relay box before testing.
2. Fold the left rear seat cushion forward, and remove
the base frame cover {see section 20).
3. Remove the access panel from the floor.
4. Disconnect the 5P connector from the fuel pump.
5. Measure voltage between the 5P connector termi-nals No.2 and No. 5 with the ignition switch ON ( ).There should be between 5 and 8 V.
FUEL PUMP5P CONNECTOR
tc56al
a
a
Wire side of female t€rminals
lf the voltage is as specified, go to step 6.lf the voltage is not as specified, check for:- an open in the YEUBLK or BLK wrre.- poor ground (c552).
11-184
7.
Turn the ignition switch OFF.
Attach a jumper wire between the No. 2 and No. 5terminals, then turn the ignition switch ON fll).
Check that the pointer of the fuel gauge starts mov-ing toward the "F" mark. Turn the ignition switchOFF before the pointer reaches "F" on the gauge
dial. Failure to do so may damage the luel gauge.
NOTE: The fuel gauge is a bobbin (cross-coil) type,hence the fuel level is continuously indicated evenwhen the ignition switch is OFF, and the pointer
moves more slowly than that of a bimetal type.
. lf the pointer of the fuel gauge does not move atall. replace the gauge.
. lf the gauge is OK, inspect the fuel gauge send-ing unit.
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Fuel Gauge Sending Unit
Tgsting
@ Do not smoke while working on tho fuel
systom. Keop open flamo 8waY from your work araa.
1. Fold the left rear seat cushion forward, and remove
the base frame cover (see section 20).
2. Remove the access panel.
3. With the ignition switch OFF. disconnect the 5P con-
nector from the fuel pump.
4. Relieve fuel pressure (see page 11-178).
5. Disconnect the fuel lines.
6. Remove the fuel pump,
7. Measure the resistance between the No. 2 and No. 5
terminals at E (EMPTY), 1/2 (HALF FULL) and F (FULL)
by moving the float.
lf you do not get the above readings, replace the
fuel pump.
11-185
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Fuel Supply System
Low Fuel Indicator System
Indicator Light Testing
NOTE: Refer to section 23forthe lowfuel lndicator circuit
clragram.
1. Check the No. 25 METER (7.5 A) fuse in the under-
dash fuse/relay box before testing.
2. Park the vehicle on level ground.
@ Do not smoke while working on the
fuel system. Keep open flame away trom the work
aroa. Drain fuel only into an approved container.
Drain the fuel into an aoDroved container. Then
install the drain bolt with a new washer.
Add less than 8 f (2.1 U.S. Gal. 1.8 lmp. Gal) of fuel,
and turn the ignition switch ON {ll). The low fuel indi-
cator light should come on within four minutes.
INDICATON LIGHT
. lf the light comes on within four minutes, go tostep 8.
. lf the light does not come on within four min-
utes. go to step 5.
Remove the seat cushion (see section 20).
Remove the fuel tank access panel from the floor,
and disconnect the 5P connector from the fuel pump,
Connect the No. 1 and No. 2 terminals with a jumper
wire.
. lf the lightcomeson, checkthe sending unit.. lf the light does not come on, check for:- an open in the GRN/yEL wire between thefuel unit and fuel gauge assembly.- blown bulb.- poor ground (G552).
FUEI- PUMP 5P CONNECTOR (C562)
JUMPER WIRE
IGRN/YEL}
7.
1 1-1 86
Wire sid€ ol tem€le terminals
8. Add 4 / of fuel (1.1 U.S. Gal, 0.9 lmp. Gal). The light
should go off within four minutes.
. lJ the light does not go off, check for:- a short in the GRNA/EL wire between the fuel
gauge sending unit and fuel gauge assembly.- faulty gauge assembly.
. lf the light goes off, the low fuel indicator light is
oK.
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PGM-FI Main Relay
Description
The PGM-Fl main relav actuallv contains two individual
relays. This relay is located at the passenger side of the
cowl. One relay is energized whenever the ignition is on
which supplies the battery voltage to the ECM/PCM,
power to the fuel injectors, and power for the second
relay. The second relay is energized for two seconds
when the ignition is switched on, and when the engine
is running, to supply power to the fuel pump
PGM.FIMAIN RELAY
Belay Testing
NOTE: lf the engine starts and continues to run, the
PGM-FI main relay is OK.
1. Remove the glovebox and the passenger's dash-
board lower cover (see section 20).
2. Remove the PGM-FI main relay
3. Aftach the battery positive terminal to the No. 2 ter-
minal and the battery negative terminal to the No. 1
terminal of the PGM-Fl main relay. Then check for
continuity between the No. 5 terminal and No. 4 ter-
minal of the PGM-FI main relay
. lfthere is continuity, go on to step 3.
. lf there is nocontinuity, replacethe PGM-Fl main
relav and retest.
No.2
To lGN. 1
To GROUND
To ST. SWITCH
To ECM/PCMCONNECTORTERMINAL A16(FLR)
To BAT O
To FUEL PUMPTo ECM/PCMCONNECTORTERMINAL(411 and A24,Bl .nd Bgal(IGP)
To FUEL PUMP
98 - 00 models
Attach the batterv Dositive terminal to the No. 5 ter-
minal and the battery negative terminal to the No. 3
termjnal of the PGM-Fl main relay. Then check that
there is continuity between the No. 7 terminal and
No. 6 terminal of the PGM-FI main relay.
. lf there is continuity, go on to step 4.
. lf there is nocontinuity, replacethe PGM-Fl main
relay and retest.
Attach the batterv oositive terminal to the No.6 ter-
minal and the battery negative terminal to the No. 1
terminal of the PGM-Fl main relay. Then check that
there is continuitv between the No. 5 terminal and
No. 4 terminal of the PGM-Fl main relay.
. lf there is continuity, the PGM-Fl main relay is OK.
. lf there is nocontinuity, replacethe PGM-FI main
5.
(cont'd)
11-147
No.5 No.5
relay and retest.
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Fuel Supply System
PGM-FI Main Relay (cont'dl
Troubleshooting
lc(}21PGM.FI MAIN RELAY 7P CONNECTOR
GND
trTr]--Flq
FI,Til'I A
Y
Wire side ot female terminals
- Engine will not start.- InsDection ol PGM-FI mainrelay and relay harness,
Check fo. an open in the wireIGND linol:1. Turn the ignition switch OFF.2. Disconnect the PGM Fl mainrelay 7P connector.3. Check for continuity betweenthe PGM'FI main relay 7P con-nector terminal No. 3 and bodyground.
Repair opcn in th€ wire betweenthe PGM-FI main relav and G101.
Check tor an open or short in thewiro (BAT line):Measure voltage between thePGM'FI main relay 7P connectorterminal No. 7 and body ground.- Repai. open or short in lhewir6 belween the PGM-FImain relay and the Fl E/M (15Al fu3e.- Replace th6 FIE/M (15 Altus6in th€ under-hood fuse/.6lay
ls there baftery voltage?
Check lor an open or short in thewire (lGl line):L Turn the ignition switch ON (ll).2. Measure the voltage betweenthe PGM-FI main relay 7P connectorterminal No. 5 and bodyground.- Repair open or shorl in thewire between the FGM-FI mainrelay and the No. 13 FUELPUMP 115 A) tuse.- Replaco the No. 13 RJEL PUMP115 A) luse in the und6.-d$hfuso/ relav box.Check for an open or short in thewire {STS line):1. Turn the ignition switch to theSTART (lll) position.NOTE:. M/T: Clutch pedal must bedepressed.. A/T: Transmission in E orElposition.2. Measure the voltage betweenthe PGM-Fl main retay 7Pconnector terminal No. 2 andbody ground.- Repair open or short in thewire betwe€n the PIGM-FI m.inrclay and th€ No. 31 STARTERSlGllAL 17.5 A) tuse.- Repl.ce the No. 31 STARTERSIGNAL 17.5 Al tuse in theunder-dash tuse/relay box.('97 model: To page 11-189)('98 00models:To page 1l 190)
1 1-188
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Fuel Supply System
PGM-FI Main Relay (cont'dl
('98 - 00 models)-l
(From page 11,188)
Check lor an open in the wire(FLR line):1. Turn the ignition switch OFF.2. Disconnect the ECM/PCM connector A (32P1.3. Check for continuity betweenthe PGM-FI main relay 7P con-nector terminal No. '1 and ECM/PCM connector terminal 416.
Repaia open in the wire betweenthe EcM/PcM lAl5l .nd thePGM-FI m.in relay.
Check for an open in the wiresllcPl,lGP2linos):1. Reconnect the ECM/PCN4 con-nector I (25P).2. Reconnect the PGM Fl mainretay connector.3. Turn the ignition switch ON l).4, Measure voltage betweenECM/PCM connector terminalsB1 and 82, and between 89and 82.
Ropai. open in tho wire b6t-we€n th. ECM/PCM lBt, Btl.nd the FGM-FI main rd.y.R€plac€ th6 FGM+| main retay,
Chock for an open in the ECM/PCM:1. Turn the ignition switch OFF.2, Measure voltage betweenECM/PCM connector terminals416 and 82 when the ignitionswitch is first turned ON (tl) for
Subrtitute e known-good ECM/PCM and recheck. lf prescribsdvoltage b now ovrihble, replacothe originel ECM/PCM.
ls there 1.0 V or less?
Check the PGM-FI main.elav(s6e page 11-1871.
PGM.FI MAIN RELAY 7P CONNECTOF (C€2)
Wire sid€ of female terminals
ECM/PCM CONNECTOR B I25PI
IGP2(YEL/BLKI
ECM/PCM CONNECTORS
a t32Pl
Wire side of female terminals
Wire side of f€male terminsls
1 1-190
Dde"Jt;;liL-F-T--
PGl(BLK}
38s l1011131719202122
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Fuel Tank
Replacement
1. Relieve the fuel pressure (see page 11-178).
2. Fold the left rear seat cushion forward, and remove the base frame cover {see section 20).
3. Remove the access panel from the floor.
4. Disconnect the 5P connector 1C562) and 6P connector (C580) ('98-00 models)'
5. Disconnect the fuel return hose and quick-connect fittings {see page 11-175}
6. Jack up the vehicle, and support it with jackstands.
7. Remove the middle floor beam.
8. Remove the drain bolt, and drain the fuel into an approved contaaner.
g. Disconnect the hoses (see page 11-173, 174). slide back the clamps. then twist hoses as you pull, to avoid damaging
them.
10. Place a jack, or other suppon, under the tank
11. Remove the strap nuts, and let the straps fall free
12. Remove the fuel tank. lf it sticks on the u ndercoat applied to its mount, carefu lly pry it off the mount,
'13. lnstallthe drain bolt with a new washer, then coat the drain bolt with Noxrust 1248'
Allow the Noxrust to dry for 20 minutes.
14. Install parts in the reverse order of removal.
'97 modol:AOCESS PANEL
CONNECTOR
@ Do not smoke while working on fuol systam Keep open flame away from your work area'
DRAIN EOLT49 N.m15.0 kgf'm,36 rbt frl
(cont'd)
1 1-191
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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 Control System
Evaporative Emission (EVAP) Controls (cont'd)
99 - 00 models:
The scan tool indicates Diagnostic Trouble Code {DTC) P0451: The Fuel Tank Pressure sensor circuit range/oerformance Droblem.
ECM/PCM CONNECTORS
SG2 {GRN/BLK)
Wire side of {emaleterminals
FUEL TANKPRESSURESENSOR
VACUUMPUMP/GAUGE.0 -30 in.H9A973X - 041 -
XXXXX
- The MIL har been rooort€d on.- DTC P0451 b storod.
Check lor th6 tu6l tank pr€ssurelen30r:1. Do the ECM/PCM Reset Proce,oure.2. Remove the fuelfill cap.3. Turn the ignition switch ON (ll).4. Monitor the FTP Sensor voltage with the Honda PGMTester, or measure voltagebetween ECM/PCM connectorterminals A29 and C18.
Chock tho vacuum lin6s torrGlriction o. blockago repair asnecessary. lf OK, roplace the fueltank Drer3ur€ sentor.
ls there approx. 2.5 V?
Check for the fuel tank piessureSensot:L Disconnect the hose betweenthe EVAP two way valve andthe fuel tank pressure sensor atthe EVAP two way valve end.2. Connect a vacuum pump tothe open end ofthat hose.3. Turn the ignition switch ON (lll.4. Monitor the FTP S€nsor volt-age with the Honda PGMTester, or measure voltagebetween ECNI/PCNI connectorterminals A29 and C18, andcarefully appiy vacuum on thehose one stroke at a time.5. The voltage should smoothlydrop from the staning approx.2.5 V down to approx. 1.5 V.STOP applying vacuum whenthe voltage drops to approx.1.5 V or damage to the tueltank pressure sensor may
Does the voltage drop to approx.1.5 V and hold?
Intermittent tailuro. sv3tem is OKat this tim€. Chack to. poor con-n€ction6 or 10036 hose at fu6ltank pres3ure ionsor and fueltrnk.
a t32Pl
PTANK ILT GRNI
WAY VALVE
11-208
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