Nissan Frontier D22. Instruction — part 529
BASIC SERVICE PROCEDURE
EC-1219
[VG33ER]
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●
Do not perform fuel pressure check with electrical system operating (i.e. lights, A/C etc.). Fuel
pressure gauge may indicate false readings due to varying engine loads and changes in manifold
vacuum.
1.
Release fuel pressure to zero.
2.
Install the inline fuel quick disconnect fitting between the con-
nection of the fuel feed hose (from tank) and the fuel hose (to
engine).
3.
Connect the fuel pressure test gauge (quick connect adapter
hose) to the quick disconnect fitting.
4.
Turn ignition switch ON and check for fuel leakage.
5.
Start engine and check for fuel leakage.
6.
Read the indication of fuel pressure gauge.
If results are unsatisfactory, perform Fuel Pressure Regulator Check.
Fuel Pressure Regulator Check
UBS00DRX
1.
Stop engine and disconnect fuel pressure regulator vacuum
hose from intake manifold.
2.
Plug intake manifold with a blind cap.
3.
Connect variable vacuum source to fuel pressure regulator.
4.
Start engine and read indication of fuel pressure gauge as vac-
uum is changed.
Fuel pressure should decrease as vacuum increases. If results
are unsatisfactory, replace fuel pressure regulator.
At idling:
With vacuum hose
connected
Approximately 235 kPa
(2.4 kg/cm
2
, 34 psi)
With vacuum hose
disconnected
Approximately 294 kPa
(3.0 kg/cm
2
, 43 psi)
WEC875
SEF928U
SEF718BA
EC-1220
[VG33ER]
ON BOARD DIAGNOSTIC (OBD) SYSTEM
ON BOARD DIAGNOSTIC (OBD) SYSTEM
PFP:00028
Introduction
UBS00DRY
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.
X: Applicable
—: Not applicable
*: 1st trip DTCs for self-diagnoses concerning SRT items cannot be shown on the GST display.
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
UBS00DRZ
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.
X: Applicable
—: Not applicable
Emission-related diagnostic information
SAE Mode
Diagnostic Trouble Code (DTC)
Mode 3 of SAE J1979
Freeze Frame data
Mode 2 of SAE J1979
System Readiness Test (SRT) code
Mode 1 of SAE J1979
1st Trip Diagnostic Trouble Code (1st Trip DTC)
Mode 7 of SAE J1979
1st Trip Freeze Frame data
Test values and Test limits
Mode 6 of SAE J1979
Calibration ID
Mode 9 of SAE J1979
DTC
1st trip DTC
Freeze Frame
data
1st trip Freeze
Frame data
SRT code
Test value
CONSULT-II
×
×
×
×
×
—
GST
×
×*
×
—
×
×
Items
MIL
DTC
1st trip DTC
1st trip
2nd trip
1st trip
display-
ing
2nd trip
display-
ing
1st trip
display-
ing
2nd trip
display-
ing
Blinking
Lighting
up
Blinking
Lighting
up
Misfire (Possible three way catalyst
damage) — DTC: P0300 - P0306 is
being detected
×
—
—
—
—
—
×
—
Misfire (Possible three way catalyst
damage) — DTC: P0300 - P0306 is
being detected
—
—
×
—
—
×
—
—
One trip detection diagnosis (refer
to
—
×
—
—
×
—
—
—
Except above
—
—
—
×
—
×
×
—
ON BOARD DIAGNOSTIC (OBD) SYSTEM
EC-1221
[VG33ER]
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Emission-related Diagnostic Information
UBS00DS0
EMISSION-RELATED DIAGNOSTIC INFORMATION ITEMS
X: Applicable
—: Not applicable
Items
(CONSULT-II screen terms)
DTC*
1
*
2
SRT code
Test value/
Test limit
(GST only)
1st trip DTC*
1
Reference page
CONSULT-II
GST
NO DTC IS DETECTED. FUR-
THER TESTING MAY BE
REQUIRED.
P0000
—
—
—
—
HO2S1 HTR (B1)
P0031
×
×
×*
4
HO2S1 HTR (B1)
P0032
×
×
×*
4
SCB/V CONT SOL/V
P0034
—
—
×
HO2S2 HTR (B1)
P0037
×
×
×*
4
HO2S2 HTR (B1)
P0038
×
×
×*
4
HO2S1 HTR (B2)
P0051
×
×
×*
4
HO2S1 HTR (B2)
P0052
×
×
×*
4
HO2S2 HTR (B2)
P0057
×
×
×*
4
HO2S2 HTR (B2)
P0058
×
×
×*
4
MAF SEN/CIRCUIT
P0101
—
—
×
MAF SEN/CIRCUIT
P0102
—
—
—
MAF SEN/CIRCUIT
P0103
—
—
—
IAT SEN/CIRCUIT
P0112
—
—
—
IAT SEN/CIRCUIT
P0113
—
—
—
ECT SEN/CIRCUIT
P0117
—
—
—
ECT SEN/CIRCUIT
P0118
—
—
—
TP SEN/CIRCUIT
P0121
—
—
×
TP SEN/CIRCUIT
P0122
—
—
—
TP SEN/CIRCUIT
P0123
—
—
—
ECT SENSOR
P0125
—
—
×
IAT SENSOR
P0127
—
—
×
THERMSTAT FNCTN
P0128
—
—
×
HO2S1 (B1)
P0132
—
×
×
HO2S1 (B1)
P0133
×
×
×*
4
HO2S1 (B1)
P0134
—
×
×
HO2S2 (B1)
P0138
—
×
×
HO2S2 (B1)
P0139
×
×
×*
4
HO2S1 (B2)
P0152
—
×
×
HO2S1 (B2)
P0153
×
×
×*
4
HO2S1 (B2)
P0154
—
×
×
HO2S2 (B2)
P0158
—
×
×
HO2S2 (B2)
P0159
×
×
×*
4
FUEL SYS-LEAN-B1
P0171
—
—
×
FUEL SYS-RICH-B1
P0172
—
—
×
FUEL SYS-LEAN-B2
P0174
—
—
×
FUEL SYS-RICH-B2
P0175
—
—
×
EC-1222
[VG33ER]
ON BOARD DIAGNOSTIC (OBD) SYSTEM
FTT SENSOR
P0181
—
—
×
FTT SEN/CIRCUIT
P0182
—
—
×
FTT SEN/CIRCUIT
P0183
—
—
×
ENG OVER TEMP
P0217
—
—
×
SC FUNCTION
P0299
—
—
×
MULTI CYL MISFIRE
P0300
—
—
×
CYL1 MISFIRE
P0301
—
—
×
CYL2 MISFIRE
P0302
—
—
×
CYL3 MISFIRE
P0303
—
—
×
CYL4 MISFIRE
P0304
—
—
×
CYL5 MISFIRE
P0305
—
—
×
CYL6 MISFIRE
P0306
—
—
×
KNOCK SEN/CIRC-B1
P0327
—
—
—
KNOCK SEN/CIRC-B1
P0328
—
—
—
CKP SEN/CIRCUIT
P0335
—
—
×
CMP SEN/CIRCUIT
P0340
—
—
×
TW CATALYST SYS-B1
P0420
×
×
×*
4
TW CATALYST SYS-B2
P0430
×
×
×*
4
EVAP PURG FLOW/MON
P0441
×
×
×*
4
EVAP SMALL LEAK
P0442
×
×
×*
4
PURG VOLUME CONT/V
P0444
—
—
×
PURG VOLUME CONT/V
P0445
—
—
×
VENT CONTROL VALVE
P0447
—
—
×
EVAP SYS PRES SEN
P0452
—
—
×
EVAP SYS PRES SEN
P0453
—
—
×
EVAP GROSS LEAK
P0455
—
×
×
EVAP VERY SML LEAK
P0456
×*
3
×
×*
4
FUEL LEV SEN SLOSH
P0460
—
—
×
FUEL LEVEL SENSOR
P0461
—
—
×
FUEL LEVL SEN/CIRC
P0462
—
—
×
FUEL LEVL SEN/CIRC
P0463
—
—
×
VEH SPEED SEN/CIRC
P0500
—
—
×
ISC SYSTEM/CIRC
P0505
—
—
×
CLOSED TP SW/CIRC
P0510
—
—
×
A/T COMM LINE
P0600*
3
—
—
—
ECM
P0605
—
—
×
PNP SW/CIRC
P0705
—
—
×
ATF TEMP SEN/CIRC
P0710
—
—
×
VEH SPD SEN/CIR AT
P0720
—
—
×
ENGINE SPEED SIG
P0725
—
—
×
A/T 1ST GR FNCTN
P0731
—
—
×
A/T 2ND GR FNCTN
P0732
—
—
×
Items
(CONSULT-II screen terms)
DTC*
1
*
2
SRT code
Test value/
Test limit
(GST only)
1st trip DTC*
1
Reference page
CONSULT-II
GST
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