Nissan Sentra. Manual — part 444
EC-472
< DTC/CIRCUIT DIAGNOSIS >
[MRA8DE]
ON BOARD REFUELING VAPOR RECOVERY (ORVR)
Is the inspection result normal?
YES
>> INSPECTION END
NO
>> Replace refueling EVAP vapor cut valve with fuel tank. Refer to
FL-10, "Removal and Installation"
.
Filler tube
Recirculation line
EVAP/ORVR line
Vacuum/pressure handy pump
Fuel tank
JPBIA5852ZZ
ENGINE CONTROL SYSTEM
EC-473
< SYMPTOM DIAGNOSIS >
[MRA8DE]
C
D
E
F
G
H
I
J
K
L
M
A
EC
N
P
O
SYMPTOM DIAGNOSIS
ENGINE CONTROL SYSTEM
Symptom Table
INFOID:0000000009758731
SYSTEM — BASIC ENGINE CONTROL SYSTEM
SYMPTOM
Reference
page
HARD/NO ST
AR
T
/REST
AR
T
(EXCP
.
H
A
)
ENGINE ST
ALL
HESIT
A
TION/SURGING/FLA
T
SPOT
SP
ARK KNOCK/DET
O
NA
TION
LACK
OF POWER/
POOR
ACC
E
LERA
TION
HIGH IDL
E/LOW
IDLE
ROUG
H IDLE/HUNTING
IDLI
NG VIBRA
TION
SLOW
/NO RETURN T
O
IDLE
OVERHEA
T
S/W
A
TER TEMPERA
T
UR
E
HIGH
EXCESS
IVE F
U
E
L CONSUMP
T
IO
N
EXCESS
IVE OIL CONSUMP
T
ION
BA
TTER
Y
DEAD (UNDER CHARGE)
Warranty symptom code
AA
AB
AC
AD
AE
AF AG AH
AJ
AK
AL
AM HA
Fuel
Fuel pump circuit
1
1
2
3
2
2
2
3
2
Fuel pressure regulator system
3
3
4
4
4
4
4
4
4
4
Fuel injector circuit
1
1
2
3
2
2
2
2
Evaporative emission system
3
3
4
4
4
4
4
4
4
4
Air
Positive crankcase ventilation sys-
tem
3
3
4
4
4
4
4
4
4
4
1
Incorrect idle speed adjustment
1
1
1
1
1
Electric throttle control actuator
1
1
2
3
3
2
2
2
2
2
2
,
,
Ignition Incorrect ignition timing adjustment
3
3
1
1
1
1
1
1
Ignition circuit
1
1
2
2
2
2
2
2
Main power supply and ground circuit
2
2
3
3
3
3
3
2
3
Mass air flow sensor circuit
1
1
2
2
2
2
2
2
Engine coolant temperature sensor circuit
3
3
3
Air fuel ratio (A/F) sensor 1 circuit
,
,
Throttle position sensor circuit
2
2
,
,
,
Accelerator pedal position sensor circuit
3
2
1
,
,
Knock sensor circuit
2
3
Crankshaft position sensor (POS) circuit
2
2
Camshaft position sensor (PHASE) circuit
3
2
EC-474
< SYMPTOM DIAGNOSIS >
[MRA8DE]
ENGINE CONTROL SYSTEM
Vehicle speed signal circuit
2
3
3
3
(M/T
models)
ECM
2
2
3
3
3
3
3
3
3
3
3
,
,
,
,
,
,
Intake valve timing control solenoid valve cir-
cuit
3
2
1
3
2
2
3
3
Exhaust valve timing control solenoid valve
circuit
3
2
1
3
2
2
3
3
Exhaust valve timing control position sensor
circuit
3
2
1
3
2
2
3
3
PNP signal circuit
3
3
3
3
3
Refrigerant pressure sensor circuit
2
3
3
4
Battery current sensor circuit
4
5
5
3
,
,
,
Starter relay circuit
3
,
Starter control relay circuit
3
,
Electrical load signal circuit
3
Intake manifold runner control valve motor cir-
cuit
4
4
Intake manifold runner control valve position
sensor circuit
4
4
Intake manifold tuning valve circuit
1
SYMPTOM
Reference
page
HARD/NO S
TA
R
T/RES
TA
R
T (E
XCP
. HA)
E
N
GINE
ST
ALL
HES
IT
A
TION/SURGING/FLA
T
SPOT
S
P
ARK KNOC
K
/DET
O
NA
TI
ON
LACK OF
POWER/POOR ACCELERA
TION
HIG
H
IDL
E
/L
OW
ID
LE
ROUGH IDLE/HUNTING
ID
LING VI
BRA
T
ION
S
LOW/NO RETU
RN
T
O ID
LE
OVERHEA
T
S
/W
A
TER TEMPERA
T
URE HIG
H
E
XCESSIVE
FUEL CON
S
UMP
T
ION
E
XCESSIVE
OIL
C
O
NSUMP
T
ION
B
A
TTER
Y
DEAD (UNDER CHARGE)
Warranty symptom code
AA
AB
AC
AD
AE
AF AG AH
AJ
AK
AL
AM HA
ENGINE CONTROL SYSTEM
EC-475
< SYMPTOM DIAGNOSIS >
[MRA8DE]
C
D
E
F
G
H
I
J
K
L
M
A
EC
N
P
O
1 - 6: The numbers refer to the order of inspection.
(continued on next table)
SYSTEM — ENGINE MECHANICAL & OTHER
Air conditioner circuit
2
2
3
3
3
3
3
3
3
3
2
(Auto A/C ),
(Manual air
condition-
ing)
ABS actuator and electric unit (control unit)
4
SYMPTOM
Reference
page
HARD/NO S
TA
R
T/RES
TA
R
T (E
XCP
. HA)
E
N
GINE
ST
ALL
HES
IT
A
TION/SURGING/FLA
T
SPOT
S
P
ARK KNOC
K
/DET
O
NA
TI
ON
LACK OF
POWER/POOR ACCELERA
TION
HIG
H
IDL
E
/L
OW
ID
LE
ROUGH IDLE/HUNTING
ID
LING VI
BRA
T
ION
S
LOW/NO RETU
RN
T
O ID
LE
OVERHEA
T
S
/W
A
TER TEMPERA
T
URE HIG
H
E
XCESSIVE
FUEL CON
S
UMP
T
ION
E
XCESSIVE
OIL
C
O
NSUMP
T
ION
B
A
TTER
Y
DEAD (UNDER CHARGE)
Warranty symptom code
AA
AB
AC
AD
AE
AF AG AH
AJ
AK
AL
AM HA
SYMPTOM
Reference
page
HARD/NO ST
AR
T
/REST
AR
T
(EXCP
. HA
)
ENGINE ST
ALL
HESIT
A
TION/SURGING/FLA
T
SPOT
SP
ARK KNOCK/DET
O
NA
T
ION
LACK
OF POWER/PO
OR A
C
C
E
LERA
TION
HIGH IDL
E/LOW
IDLE
ROU
G
H IDLE/HUNTING
IDLI
NG VIBRA
TION
SLOW/NO
RETURN
T
O
IDLE
OVERHEA
T
S/W
A
TER TEMP
ERA
T
U
R
E
HIGH
EXCESSI
VE FUE
L CONSUMP
T
IO
N
EXCESSI
VE OIL CONSUMP
T
ION
BA
TTER
Y
DEAD (UNDER CHARGE)
Warranty symptom code
A
A
AB
AC
AD
AE
AF
AG AH
AJ
AK
AL
AM HA
Fuel
Fuel tank
5
5
Fuel piping
5
5
5
5
5
5
Vapor lock
—
Valve deposit
5
5
5
5
5
5
5
—
Poor fuel (Heavy weight gasoline,
Low octane)
—
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