Nissan Pathfinder (2005 year). Instruction — part 149
ON BOARD REFUELING VAPOR RECOVERY (ORVR)
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7.
CHECK REFUELING EVAP VAPOR CUT VALVE
Refer to
.
OK or NG
OK
>> GO TO 8.
NG
>> Replace refueling EVAP vapor cut valve with fuel tank.
8.
CHECK FUEL FILLER TUBE
Check filler neck tube and hose connected to the fuel tank for clogging, dents and cracks.
OK or NG
OK
>> GO TO 9.
NG
>> Replace fuel filler tube.
9.
CHECK ONE-WAY FUEL VALVE-I
Check one-way valve for clogging.
OK or NG
OK
>> GO TO 10.
NG
>> Repair or replace one-way fuel valve with fuel tank.
10.
CHECK ONE-WAY FUEL VALVE-II
1.
Make sure that fuel is drained from the tank.
2.
Remove fuel filler tube and hose.
3.
Check one-way fuel valve for operation as follows.
When a stick is inserted, the valve should open, when removing
stick it should close.
Do not drop any material into the tank.
OK or NG
OK
>> INSPECTION END
NG
>> Replace fuel filler tube or replace one-way fuel valve
with fuel tank.
Component Inspection
UBS00K3M
REFUELING EVAP VAPOR CUT VALVE
With CONSULT-II
1.
Remove fuel tank. Refer to
.
2.
Drain fuel from the tank as follows:
a.
Remove fuel feed hose located on the fuel gauge retainer.
b.
Connect a spare fuel hose, one side to fuel gauge retainer where the hose was removed and the other
side to a fuel container.
c.
Drain fuel using “FUEL PUMP RELAY” in “ACTIVE TEST” mode with CONSULT-II.
3.
Check refueling EVAP vapor cut valve for being stuck to close as follows.
Blow air into the refueling EVAP vapor cut valve (from the end of EVAP/ORVR line hose), and check that
the air flows freely into the tank.
4.
Check refueling EVAP vapor cut valve for being stuck to open as follows.
a.
Connect vacuum pump to hose end.
b.
Remove fuel gauge retainer with fuel gauge unit.
Always replace O-ring with new one.
c.
Put fuel tank upside down.
SEF665U
EC-44
ON BOARD REFUELING VAPOR RECOVERY (ORVR)
2005 Pathfinder
d.
Apply vacuum pressure to hose end [
−
13.3 kPa (
−
100 mmHg,
−
3.94 inHg)] with fuel gauge retainer
remaining open and check that the pressure is applicable.
Without CONSULT-II
1.
Remove fuel tank. Refer to
.
2.
Drain fuel from the tank as follows:
a.
Remove fuel gauge retainer.
b.
Drain fuel from the tank using a handy pump into a fuel container.
3.
Check refueling EVAP vapor cut valve for being stuck to close as follows.
Blow air into the refueling EVAP vapor cut valve (from the end of EVAP/ORVR line hose), and check that
the air flows freely into the tank.
4.
Check refueling EVAP vapor cut valve for being stuck to open as follows.
a.
Connect vacuum pump to hose end.
b.
Remove fuel gauge retainer with fuel gauge unit.
Always replace O-ring with new one.
c.
Put fuel tank upside down.
d.
Apply vacuum pressure to hose end [
−
13.3 kPa (
−
100 mmHg,
−
3.94 inHg)] with fuel gauge retainer
remaining open and check that the pressure is applicable.
BBIA0568E
BBIA0568E
POSITIVE CRANKCASE VENTILATION
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POSITIVE CRANKCASE VENTILATION
PFP:11810
Description
UBS00K3N
SYSTEM DESCRIPTION
This system returns blow-by gas to the intake manifold.
The positive crankcase ventilation (PCV) valve is provided to conduct crankcase blow-by gas to the intake
manifold. During partial throttle operation of the engine, the intake manifold sucks the blow-by gas through the
PCV valve. Normally, the capacity of the valve is sufficient to handle any blow-by and a small amount of venti-
lating air. The ventilating air is then drawn from the air inlet tubes into the crankcase. In this process the air
passes through the hose connecting air inlet tubes to rocker cover. Under full-throttle condition, the manifold
vacuum is insufficient to draw the blow-by flow through the valve. The flow goes through the hose connection
in the reverse direction.
On vehicles with an excessively high blow-by, the valve does not
meet the requirement. This is because some of the flow will go
through the hose connection to the air inlet tubes under all condi-
tions.
Component Inspection
UBS00K3O
PCV (POSITIVE CRANKCASE VENTILATION) VALVE
With engine running at idle, remove PCV valve from rocker cover. A
properly working valve makes a hissing noise as air passes through
it. A strong vacuum should be felt immediately when a finger is
placed over valve inlet.
SEC921C
PBIB1588E
PBIB1589E
EC-46
POSITIVE CRANKCASE VENTILATION
2005 Pathfinder
PCV VALVE VENTILATION HOSE
1.
Check hoses and hose connections for leaks.
2.
Disconnect all hoses and clean with compressed air. If any hose
cannot be freed of obstructions, replace.
S-ET277
NVIS (NISSAN VEHICLE IMMOBILIZER SYSTEM-NATS)
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NVIS (NISSAN VEHICLE IMMOBILIZER SYSTEM-NATS)
PFP:25386
Description
UBS00K3P
●
If the security indicator lights up with the ignition switch in
the ON position or “NATS MALFUNCTION” is displayed on
“SELF-DIAG RESULTS” screen, perform self-diagnostic
results mode with CONSULT-II using NATS program card.
Refer to
BL-99, "NVIS(NISSAN Vehicle Immobilizer System-
.
●
Confirm no self-diagnostic results of NVIS (NATS) is dis-
played before touching “ERASE” in “SELF-DIAG RESULTS”
mode with CONSULT-II.
●
When replacing ECM, initialization of NVIS (NATS) system
and registration of all NVIS (NATS) ignition key IDs must be
carried out with CONSULT-II using NATS program card.
Therefore, be sure to receive all keys from vehicle owner. Regarding the procedures of NVIS
(NATS) initialization and NVIS (NATS) ignition key ID registration, refer to CONSULT-II operation
instruction, IVIS/NVIS.
SEF543X
EC-48
ON BOARD DIAGNOSTIC (OBD) SYSTEM
2005 Pathfinder
ON BOARD DIAGNOSTIC (OBD) SYSTEM
PFP:00028
Introduction
UBS00K3Q
The ECM has an on board diagnostic system, which detects malfunctions related to engine sensors or actua-
tors. The ECM also records various emission-related diagnostic information including:
The above information can be checked using procedures listed in the table below.
×
: Applicable
—: Not applicable
*: When DTC and 1st trip DTC simultaneously appear on the display, they cannot be clearly distinguished from each other.
The malfunction indicator lamp (MIL) on the instrument panel lights up when the same malfunction is detected
in two consecutive trips (Two trip detection logic), or when the ECM enters fail-safe mode. (Refer to
.)
Two Trip Detection Logic
UBS00K3R
When a malfunction is detected for the first time, 1st trip DTC and 1st trip Freeze Frame data are stored in the
ECM memory. The MIL will not light up at this stage. <1st trip>
If the same malfunction is detected again during the next drive, the DTC and Freeze Frame data are stored in
the ECM memory, and the MIL lights up. The MIL lights up at the same time when the DTC is stored. <2nd
trip> The “trip” in the “Two Trip Detection Logic” means a driving mode in which self-diagnosis is performed
during vehicle operation. Specific on board diagnostic items will cause the ECM to light up or blink the MIL,
and store DTC and Freeze Frame data, even in the 1st trip, as shown below.
×
: Applicable
—: Not applicable
When there is an open circuit on MIL circuit, the ECM cannot warn the driver by lighting up MIL when there is
malfunction on engine control system.
Therefore, when electrical controlled throttle and part of ECM related diagnoses are continuously detected as
NG for 5 trips, ECM warns the driver that engine control system malfunctions and MIL circuit is open by means
of operating fail-safe function.
Emission-related diagnostic information
SAE Mode
Diagnostic Trouble Code (DTC)
Service $03 of SAE J1979
Freeze Frame data
Service $02 of SAE J1979
System Readiness Test (SRT) code
Service $01 of SAE J1979
1st Trip Diagnostic Trouble Code (1st Trip DTC)
Service $07 of SAE J1979
1st Trip Freeze Frame data
Test values and Test limits
Service $06 of SAE J1979
Calibration ID
Service $09 of SAE J1979
DTC
1st trip DTC
Freeze Frame
data
1st trip Freeze
Frame data
SRT code
SRT status
Test value
CONSULT-II
×
×
×
×
×
×
—
GST
×
×
×
—
×
×
×
ECM
×
×
*
—
—
—
×
—
Items
MIL
DTC
1st trip DTC
1st trip
2nd trip
1st trip
displaying
2nd trip
displaying
1st trip
displaying
2nd trip
display-
ing
Blinking
Lighting
up
Blinking
Lighting
up
Misfire (Possible three way cata-
lyst damage) — DTC: P0300 -
P0306 is being detected
×
—
—
—
—
—
×
—
Misfire (Possible three way cata-
lyst damage) — DTC: P0300 -
P0306 is being detected
—
—
×
—
—
×
—
—
One trip detection diagnoses
(Refer to
.)
—
×
—
—
×
—
—
—
Except above
—
—
—
×
—
×
×
—
ON BOARD DIAGNOSTIC (OBD) SYSTEM
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The fail-safe function also operates when above diagnoses except MIL circuit are detected and demands the
driver to repair the malfunction.
Emission-related Diagnostic Information
UBS00K3S
EMISSION-RELATED DIAGNOSTIC INFORMATION ITEMS
×
: Applicable
—: Not applicable
Engine operating condition in fail-safe mode
Engine speed will not rise more than 2,500 rpm due to the fuel cut
Items
(CONSULT-II screen terms)
DTC*
1
SRT code
Test value/
Test limit
(GST only)
Trip
MIL
Reference
page
CONSULT-II
GST*
2
ECM*
3
CAN COMM CIRCUIT
U1000
1000*
5
—
—
1
×
CAN COMM CIRCUIT
U1001
1001*
5
—
—
2
—
NO DTC IS DETECTED.
FURTHER TESTING
MAY BE REQUIRED.
P0000
0000
—
—
—
Flashing*
7
INT/V TIM CONT-B1
P0011
0011
—
—
2
×
INT/V TIM CONT-B2
P0021
0021
—
—
2
×
HO2S2 HTR (B1)
P0037
0037
×
×
2
×
HO2S2 HTR (B1)
P0038
0038
×
×
2
×
HO2S2 HTR (B2)
P0057
0057
×
×
2
×
HO2S2 HTR (B2)
P0058
0058
×
×
2
×
MAF SEN/CIRCUIT
P0101
0101
—
—
2
×
MAF SEN/CIRCUIT
P0102
0102
—
—
1
×
MAF SEN/CIRCUIT
P0103
0103
—
—
1
×
IAT SEN/CIRCUIT
P0112
0112
—
—
2
×
IAT SEN/CIRCUIT
P0113
0113
—
—
2
×
ECT SEN/CIRCUIT
P0117
0117
—
—
1
×
ECT SEN/CIRCUIT
P0118
0118
—
—
1
×
TP SEN 2/CIRC
P0122
0122
—
—
1
×
TP SEN 2/CIRC
P0123
0123
—
—
1
×
ECT SENSOR
P0125
0125
—
—
1
×
IAT SENSOR
P0127
0127
—
—
2
×
THERMSTAT FNCTN
P0128
0128
—
—
2
×
HO2S2 (B1)
P0138
0138
—
×
2
×
HO2S2 (B1)
P0139
0139
×
×
2
×
HO2S2 (B2)
P0158
0158
—
×
2
×
HO2S2 (B2)
P0159
0159
×
×
2
×
FUEL SYS-LEAN-B1
P0171
0171
—
—
2
×
FUEL SYS-RICH-B1
P0172
0172
—
—
2
×
FUEL SYS-LEAN-B2
P0174
0174
—
—
2
×
FUEL SYS-RICH-B2
P0175
0175
—
—
2
×
FTT SENSOR
P0181
0181
—
—
2
×
FTT SEN/CIRCUIT
P0182
0182
—
—
2
×
FTT SEN/CIRCUIT
P0183
0183
—
—
2
×
TP SEN 1/CIRC
P0222
0222
—
—
1
×
TP SEN 1/CIRC
P0223
0223
—
—
1
×
MULTI CYL MISFIRE
P0300
0300
—
—
2
×
EC-50
ON BOARD DIAGNOSTIC (OBD) SYSTEM
2005 Pathfinder
CYL 1 MISFIRE
P0301
0301
—
—
2
×
CYL 2 MISFIRE
P0302
0302
—
—
2
×
CYL 3 MISFIRE
P0303
0303
—
—
2
×
CYL 4 MISFIRE
P0304
0304
—
—
2
×
CYL 5 MISFIRE
P0305
0305
—
—
2
×
CYL 6 MISFIRE
P0306
0306
—
—
2
×
KNOCK SEN/CIRC-B1
P0327
0327
—
—
2
—
KNOCK SEN/CIRC-B1
P0328
0328
—
—
2
—
KNOCK SEN/CIRC-B2
P0332
0332
—
—
2
—
KNOCK SEN/CIRC-B2
P0333
0333
—
—
2
—
CKP SEN/CIRCUIT
P0335
0335
—
—
2
×
CMP SEN/CIRC-B1
P0340
0340
—
—
2
×
CMP SEN/CIRC-B2
P0345
0345
—
—
2
×
TW CATALYST SYS-B1
P0420
0420
×
×
2
×
TW CATALYST SYS-B2
P0430
0430
×
×
2
×
EVAP PURG FLOW/MON
P0441
0441
×
×
2
×
EVAP SMALL LEAK
P0442
0442
×
×
2
×
PURG VOLUME CONT/V
P0444
0444
—
—
2
×
PURG VOLUME CONT/V
P0445
0445
—
—
2
×
VENT CONTROL VALVE
P0447
0447
—
—
2
×
EVAP SYS PRES SEN
P0451
0451
—
—
2
×
EVAP SYS PRES SEN
P0452
0452
—
—
2
×
EVAP SYS PRES SEN
P0453
0453
—
—
2
×
EVAP GROSS LEAK
P0455
0455
—
—
2
×
EVAP VERY SML LEAK
P0456
0456
×
*
4
×
2
×
FUEL LEV SEN SLOSH
P0460
0460
—
—
2
×
FUEL LEVEL SENSOR
P0461
0461
—
—
2
×
FUEL LEVL SEN/CIRC
P0462
0462
—
—
2
×
FUEL LEVEL SEN/CIRC
P0463
0463
—
—
2
×
VEH SPEED SEN/CIRC*
6
P0500
0500
—
—
2
×
ISC SYSTEM
P0506
0506
—
—
2
×
ISC SYSTEM
P0507
0507
—
—
2
×
PW ST P SEN/CIRC
P0550
0550
—
—
2
—
ECM
P0605
0605
—
—
1 or 2
×
or —
TCM
P0700
0700
—
—
1
×
PNP SW/CIRC
P0705
0705
—
—
2
×
ATF TEMP SEN/CIRC
P0710
0710
—
—
2
×
VEH SPD SEN/CIR AT*
6
P0720
0720
—
—
2
×
TCC SOLENOID/CIRC
P0740
0740
—
—
2
×
A/T TCC S/V FNCTN
P0744
0744
—
—
2
×
L/PRESS SOL/CIRC
P0745
0745
—
—
2
×
A/F SEN1 HTR (B1)
P1031
1031
×
×
2
×
Items
(CONSULT-II screen terms)
DTC*
1
SRT code
Test value/
Test limit
(GST only)
Trip
MIL
Reference
page
CONSULT-II
GST*
2
ECM*
3
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