Emission Control System
Evaporative Emission (EVAP) Controls (cont,dl
lT145il ("ont'o)
EVAPTHREE
VATVE \'t
VACUUMPUMP/GAUGE,0 - 30 in.HsA973X - 041 -
xxxxx
WIRE
ECM/PCM CONNECTOR A {32PI
vsv
Wire side of female terminals
EVAPCONTROLCANISTER
EVAP CONTROLCANISTER VENT SHUTVALVE 2P CONNECTOR {C361}
riErr+J
I vsv
/A {Lr GRN/WHT|
YI
Wire side of female terminals
CANISTEFVENTSHUTVALVE
EVAPCONTROL
(}BING
Replace.
ffilrcr
e
(BLK/wHr)
I
11-222
EVAP control canistor vent shutvalve t6t.(The continuation of DTC p1457
troubl€ahooting.)
Chcck the EVAP control c.nirt6lvent ahut vrlve:1. Disconnect the vacuum hosetrom the EVAP thre€ way valve,and connect a vacuum pumpto the hose.2. Connect the ECM,PCM conn6c,tor terminal A4 to the bodyground with a jumper wire.3. Turn the ignition switch ON fil).4. Applyvacuum to the hose.
EVAP control crni3ter v6nt shutvelve b OK. Do the canistsr sys-lern loak test {3ee page 11-2231.
Does the valve hold vacuum?
Check for an open in the wireIVSV linGll1. Turn the ignition swjtch OFF.2. Disconnect the EVAP controlcanister vent shut valve 2pconnector.3. Check for continuity betweenthe EVAP control canister ventshul valve 2P connector termi-nal No. l and body ground.
Ropril op6n in tho wire botweonthe EVAP control canister v6ntshut v.lve and the ECM/PCM(A41.
Check tor an open in the wire(lGl line):1. Turn the ignition switch ON l).2. Measure voltage between theEVAP control canister vent shutvalve 2P connector terrninalNo. 1 and body ground.
Roplace thG EVAP cont.ol canis-ter Yent shut velve and O-ring.
Repai. opon in the wire betwoenth6 EVAP control canister vontshut valve .nd No. 15 ALTERNA-TOB SP SENSOR t?.5 Alfus6.
{LT GRN/WHT)
36a10
l4/1617l8't9202l232426 272a2930
JUMPER
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Canbter system leak test
{The continuation of DTC P1457
trouble3hootin9.)
Chock the EVAP control canistervent shut valve line and connoc'
tonS:1. Turn the ignition switch OFF
2. Connect to three'way tee fit_
tings into the hose from the
EVAP control canister to the
EVAP two way valve. Connect
the fuel tank pressure sensor
to one of the tee fittings and
the vacuum PumP to the other'
3. Remove the vent hose from
the EVAP control canister vent
shut valve and cap the Pon to
seal the fresh air vent Ior the
EVAP control canister.4. Turn the ignition switch ON (ll).
5. While monitoring the FTP
Sensor voltage with the Honda
PGM Tester, or measurangvoltage between ECM/PCM
connector terminals A29 and
C18 slowly PumP the vacuumpump using a stroke every 1 -
2 seconds.6. Continue to PumP vacuum
until that voltage droPs to
approx. 1.5 V.NOTE: Make sure that the
engine coolant temPeraturestillabove 95'F (35'Cland Yourvacuum PumP has no leak
7. Monitor that voltage for 20
seconds.
Check the EVAP Pu.ge control
solenoid valve line and connec-
tions:1. Turn the ignition switch OFF.
2. Disconnect the Purge lane
hose from the EVAP control
canister and Plug the Port3. Turn the ignition switch ON (lli.
4. While monitoring the FTP
Sensor voltage with the Honda
PGM Tester, or measuringvoltage between ECM/PCM
connector terminals A29 and
Cl8 slowly PumP the vacuumpump using a stroke every 1 -
2 seconds.5. Continue to pump vacuum
until that voltage droPs to
approx. 1-5 V.NOTE: Make sure that the
engine coolant temPeraturestill above 95'F (35"C) and Yourvacuum pump has no leak-
6. Monitor that voltage tor 20
seconds.
Doesthe voltage drop to 1.5 V
and holds at least 20 seconds?
lGp€ct the EVAP control cani3tel
vent 3hut valvo line and connec_
tion5.
Inlpect tho EVAP Putge control
solenoid valvo line and connec'
tion3. It th6y lro OK, do the EVAP
two way valve te3t (seo page 11-
2211.
Does the voltage drop to 1.5 V
and holds at least 20 seconds?
Reolace the EVAP conirol canister.
EVAPBYPASSSOLENOIDVALVE
FUEL TANK
EVAPCONTROL
VENTSHUTVALVE
EVAPCONTROLCANISTER
SENSOR
EVAP TWO WAYVALVE
EVAPTHREE
VALVE
ttrrL
ta
VACUUMPUMP/GAUGE,0 - 30 in.HgA973X -
041 -
XXXXX
FITTINGS
ECM/PCM CONNECTORS
A {32P)
PTANK ILT GRN)
c (31Pt
SG2 {GRN/BLK)
Wire side of female terminals
{cont'd)
11-223
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Troubleshooting Procedures
Checking ths Diagnostic Trouble Code (DTC)
with an O8D ll Scan tool or Honda PGM Tsster
When the PCM senses an abnormality in the input or output systems, the El ('97 - 98) or E ('99 - O0) indicator light in thegauge ass€mbly will blink. When the 16P Data Link Connector (DLC) {located under the dash on the passenger's side) is
connected to the OBD ll Scan Tool or Honda PGM Tester as shown, the scan tool or tester will indicate the Diagnostic
Trouble Code (DTC) when the ignition switch is turned ON(ll).
HONDA PGM TESTER olOBD II SCAN TOOL
lf the E or E indicator light or the MIL has been reported on, or if a driveability problem is suspected, follow this proce-
dure:
1. Connect the OBD ll Scan Tool (conforming to SAE J1978) or Honda PGM Tester to the 16P DLC. (See the OBD ll ScanTool or Honda PGM Tester user's manual for specific instructions. lf you are using the Honda PGM Tester, make sureit is set to the SAE DTC Wpe).2. Turn the ignition switch ON (ll), and observe the DTC on the screen
3. Record allfuel and emission DTCS, A,,/T DTCS, and freeze data.
4. lf there is a fuel and emissions DTC, first check the fuel and emissions system as indicated by the DTC (except for DTCP0700). DTC P0700 means there is one or more Ay'T DTC, and no Droblems were detected in the fuel and emissionscircuit of the PCM.
5. Wire down the radio station presets.
6. Reset the memory with the PGM Tester o. by removing the BACK UP fuse in the under-hood fuse/relay box for morethan 10 seconds.
7. Drive the vehicle for several minutes at speeds over 30 mph (50 km/hr), and then recheck for DTCS. lf the A/T DTCreturns, 9o to the Symptom-to Component Chart on pages 14-60 and 14-61 for the '97 models, and pages 14-62 and14-63 for '98 - 00 models. lf the OTC does not return, there was an intermittent problem within the circuit. Make sureall pins and terminals in the circuit are tight, and then go to step 8.8. Reset the radio Dreset stations, and set the clock.
DATA LINK CONNECTOR {16PI
[ -=.r,
ili,i /i,
v,., i
14-56
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Checking the Diagnostic Trouble Code IDTCI
with the Servic€ Check Connestol and Special Tool
when the PcM senses an abnormality in the input or output systems' the E ('97 - 98) or E (gS - OO) indicator light in the
gauge assembly may blink.
When the Service Check Connector (2P) (located under the dash on the passenger side) is connected with the special tool
as shown, the E or E indicator light will blink the Diagnostic Trouble Code (DTC) when the ignition switch is turned ON
{ ).
when the E or E indicator light has been reponed on, connect the service check connector (2P) to the special tool
Then turn ON (ll) the ignition switch and observe the E or E indicator light'
.AUGE AssEMaLY $1,"^f:tT"'ff,
SCS SERVICE CONNECTOR07PAz - (x!l0100
codes 1 through 9 are indicated by individual short blinks. codes 1o and above are indicated by a series of long and short
blinks. one long blink equals 1o short blinks. Add the long and short blinks together to determine the code. After deter-
mining the code, refer to the electrical system symptom-to-component chart on pages 14-60 and 14-61 for the '97 model,
and pages 14-62 and 14-63 tor the '98 - 00 models.
Sr. DTC 1
S.. DTC 2
Long blinkShori blink! {fiv. timt l
Sc. DTC 15
(cont'd)
'99 - O0 models '97 - 98 models
Short blinl lonc.)
14-57
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Symptom-to-Component Chart
Electrical System -'97 Model
DTC*: The DTc in parentheses is the code the loa indicator right indicates when the Data LinkConnector is connected to the Honda pGM Tester.
DTC*E Indicatol
LightMILDetection ltemPage
P 1753
(1)BlinksONLock up control solenoid valve A(see page 14-64)
P1758
\21
B linksONLock-up control solenoid valve B(see page 14-66)
P 1705
(5)BlinksONA,/T gear position switch (short to ground)(see page 14-68)
P1706
(6)OFFONA,/T gear position switch {open)(see page 14-70)
P0753
\11
B linksONShift control solenoid valve A(see page 14-72)
P0758
(8)BlinksONShift control solenoid valve B(see page 14-74)
P0720
(9)BlinksONCountershaft speed sensor{see page 14-76)
P0715
(15)B linksONMainshaft speed sensor(see page l4-78)
P17 68( 16)
BlinksONLinear solenoid(see page 14-80)
P0740
{40)
OFFONLock-up control system(see page 14-82)
P0730
(41)OFFONShift control system(see page 14-84)
14-60
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NOTE: When the OBD ll Scan Tool or Honda PGM Tester indicate DTC(s) for the automatic transmission control system'
the scan tool or tester indicates code P0700 simultaneously. code P07oo means a detection of some automatic transmis-
sion problem in the PGM-Fl control system
lf the self-diagnostic E indicator light does not blink, perform an inspection according to the table below.
NOTE: lf a customer describes the symptom for code P1706 (6), it will be necessary to recreate the symptom by test-driv-
ing, then recheck the OTC.
SymptomInspectionRef. page
E indicator light is on constantly (not blinking) whenever the ignition
switch is ON (ll).14-86
E indicator light does not come on for two seconds after ignition
switch is first turned ON (ll).
't 4-41
Shift lever cannot be moved from @ position with the brake pedal
Dressed,Check shift lock system14-89
lgnition key cannot be moved from ACC (l) position to LOCK {0) posi
tion with the shift lever in E position.Check keY interlock system14-91
14-61
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Symptom-to-Component Chart
Electrical System -'98 - 00 Models
DTC*; The DTC in the parentheses is the code the E or E indicator light indicates when the Data LinkConnector is connected to the Honda pGM Tester.
DTC*
Et Indicatol
Lighr (98)
E Indicator
Light ('99 - 00)
MILDetestion ltomPage
P1753
(1)BlinksONLock-up control solenoid valve A{see page 14-93)
P1758
(21BlinksONLock-up control solenoid valve B(see page 14-96)
P1705(5)BlinksONA,/T gear position switch (shon to grounol(see page 14-99)
P1706(6)OFFONA,/T gear position switch (open)(see page 14-103)
P0753
(71Blin ksONShift control solenoid valve A(see page 14-106)
P0758
(8)BlinksONShift control solenoid valve B(see page 14-109)
P0720
(9)BlinksONCountershaft speed sensor{see page 14-112)
P0715
{15)
BlinksONMainshaft speed sensor(see page 14-114)
P1768
(16)BlinksONLinear solenoid(see page 14-117)
POl 40(40)OFFONLock-up control system(see page 14-119)
P0730
(41)OFFONShift control system(see page 14-121)
14-62
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NOTE: When the OBD ll Scan Tool or Honda PGM Tester indicate DTC(S) for the automatic transmission control system,
the scan tool or tester indicates code P0700 simultaneously. Code P0700 means a detection of some automatic transmis-
sion problem in the PGM-Fl control system.
lf the self-diagnostic E or E indicator light does not blink, perform an inspection according to the table below.
NOTE: lf a customer describes the symptom for code P17OO (6), it will be necessary to recreate the symptom by test-driv-
ing. then recheck the DTC.
SymptomInspectionRef. page
E or E indicator light does not come on for two seconds after ignition
switch is first turned ON (ll).14-123
E or E] indicator light is on constantly (not blinking) whenever the
ignition switch is oN {ll).
14-125
Shift lever cannot be moved from E position with the brake pedal
presseo.Check shift lock system14-'t26
lgnition key cannot be moved from ACC (l) position to LOCK (0) posi-
tion with the shift lever in E position.Check key interlock system14-129
O/D OFF indicator light does not come on for two seconds after ignition
switch is first turned ON (ll). ('99 - 00 models)14-131
The O/D OFF indicator light is on constantly whenever the ignition
switch is ON (ll). ('99 - 00 models)14-132
The O/D OFF indicator light does not come on even though the Over-
Drive (O/Dl switch is pressed in E position. ('99 - 00 models)
Check Over-Drive {O/D}
switch circuit14-133
14-63
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