Nissan Pathfinder (2007 year). Manual — part 153
TROUBLE DIAGNOSIS
EC-91
C
D
E
F
G
H
I
J
K
L
M
A
EC
2007 Pathfinder
Symptom Matrix Chart
UBS00K46
SYSTEM — BASIC ENGINE CONTROL SYSTEM
SYMPTOM
Reference
page
HA
RD
/N
O
S
T
AR
T
/RE
ST
A
R
T
(E
X
C
P
. HA
)
EN
GI
N
E
ST
A
L
L
HE
SI
T
A
T
IO
N
/S
UR
GI
NG
/F
L
A
T S
P
O
T
SP
A
R
K
KN
OC
K/
DE
T
O
N
A
TI
O
N
LA
CK
OF
PO
W
E
R
/PO
OR
AC
C
E
LE
RA
T
IO
N
H
IG
H
ID
L
E
/L
O
W
ID
L
E
RO
UG
H I
D
L
E
/H
UN
TI
N
G
ID
L
IN
G
V
IB
R
A
T
IO
N
S
L
O
W
/N
O
R
E
T
U
R
N
T
O
ID
L
E
OV
ER
HE
A
T
S
/W
A
TE
R TEM
P
E
R
A
T
U
R
E HI
G
H
EX
CE
SS
IV
E
FU
EL
CO
NS
UM
P
T
IO
N
E
X
C
E
S
S
IV
E O
IL
CO
NS
UM
PTI
O
N
BA
T
T
E
R
Y
D
E
A
D
(
U
N
D
E
R
CH
AR
GE
)
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
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
EC-228
EC-237
EC-245
EC-253
EC-606
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
Vehicle speed signal circuit
2
3
3
3
Power steering pressure sensor circuit
2
3
3
EC-92
TROUBLE DIAGNOSIS
2007 Pathfinder
1 - 6: The numbers refer to the order of inspection.
(continued on next page)
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
PNP switch circuit
3
3
3
3
3
VIAS control solenoid valve circuit
1
Refrigerant pressure sensor circuit
2
3
3
4
Electrical load signal circuit
3
Air conditioner circuit
2
2
3
3
3
3
3
3
3
3
2
ABS actuator and electric unit (control unit)
4
,
SYMPTOM
Reference
page
HA
RD
/N
O S
T
ART
/R
E
S
T
ART
(
E
XC
P
. HA
)
EN
GI
NE
ST
A
L
L
H
E
S
IT
A
T
ION
/S
UR
GI
N
G
/F
L
A
T
S
P
O
T
S
P
AR
K KN
OC
K/
D
E
T
O
NA
T
IO
N
L
A
C
K
O
F
PO
W
E
R/
P
O
O
R
AC
CE
L
E
RA
T
ION
H
IG
H
I
D
L
E
/L
O
W
ID
L
E
RO
UGH
I
D
L
E
/H
U
N
T
ING
ID
LI
NG
VI
BR
A
T
IO
N
SL
OW
/N
O R
E
T
U
R
N
TO I
D
L
E
OV
ER
HE
A
T
S
/W
A
T
E
R
TE
M
P
ER
A
T
U
R
E
HI
GH
E
X
C
E
S
S
IV
E FU
EL
CO
NS
UM
P
T
IO
N
E
X
C
E
S
S
IV
E OI
L
CO
NS
UM
P
T
IO
N
BA
T
T
E
R
Y DE
AD
(
U
ND
ER
CH
AR
GE
)
Warranty symptom code
AA
AB
AC
AD
AE
AF
AG
AH
AJ
AK
AL
AM
HA
TROUBLE DIAGNOSIS
EC-93
C
D
E
F
G
H
I
J
K
L
M
A
EC
2007 Pathfinder
SYSTEM — ENGINE MECHANICAL & OTHER
SYMPTOM
Reference
page
HA
RD
/N
O S
T
AR
T
/R
E
S
T
AR
T
(
E
XC
P
. HA
)
EN
GI
NE
ST
A
L
L
HE
SI
T
A
TI
O
N
/S
UR
G
ING
/F
L
A
T SPO
T
S
P
AR
K K
N
OC
K/
D
E
TO
NA
T
IO
N
LA
CK
OF
PO
W
E
R
/PO
OR
A
C
C
E
L
E
RA
TI
O
N
HI
GH
I
D
L
E
/L
OW
I
D
L
E
RO
UG
H I
D
L
E
/H
UN
TI
NG
ID
L
IN
G
V
IB
R
A
T
IO
N
SL
OW
/N
O R
E
T
U
R
N
T
O
I
D
L
E
OV
ER
HE
A
T
S
/W
A
TE
R TE
MP
ER
A
T
U
R
E
HI
GH
EX
CE
SS
IV
E
FU
EL
CO
N
S
U
M
P
T
IO
N
E
X
C
E
S
S
IV
E OI
L
CO
NS
UM
P
T
IO
N
B
A
TT
ERY
D
E
AD
(
U
ND
ER
C
H
A
R
G
E
)
Warranty symptom code
AA
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 gaso-
line, Low octane)
—
Air
Air duct
5
5
5
5
5
5
Air cleaner
Air leakage from air duct
(Mass air flow sensor — electric
throttle control actuator)
5
5
5
5
Electric throttle control actuator
Air leakage from intake manifold/
Collector/Gasket
Cranking
Battery
1
1
1
1
1
1
1
1
Generator circuit
Starter circuit
3
Signal plate
6
PNP switch
4
Engine
Cylinder head
5
5
5
5
5
5
5
5
Cylinder head gasket
4
3
Cylinder block
6
6
6
6
6
6
6
6
4
Piston
Piston ring
Connecting rod
Bearing
Crankshaft
Valve
mecha-
nism
Timing chain
5
5
5
5
5
5
5
5
Camshaft
Intake valve timing control
Intake valve
3
Exhaust valve
EC-94
TROUBLE DIAGNOSIS
2007 Pathfinder
1 - 6: The numbers refer to the order of inspection.
Exhaust
Exhaust manifold/Tube/Muffler/
Gasket
5
5
5
5
5
5
5
5
Three way catalyst
Lubrica-
tion
Oil pan/Oil strainer/Oil pump/Oil
filter/Oil gallery/Oil cooler
5
5
5
5
5
5
5
5
,
Oil level (Low)/Filthy oil
Cooling
Radiator/Hose/Radiator filler cap
5
5
5
5
5
5
5
4
5
Thermostat
5
Water pump
Water gallery
Cooling fan
5
Coolant level (Low)/Contami-
nated coolant
5
NVIS (NISSAN Vehicle Immobilizer System —
NATS)
1
1
SYMPTOM
Reference
page
HA
RD
/N
O S
T
ART
/R
E
S
T
ART
(
E
XC
P
. HA
)
EN
GI
NE
ST
A
L
L
H
E
S
IT
A
T
ION
/S
UR
GI
N
G
/F
L
A
T
S
P
O
T
S
P
AR
K KN
OC
K/
D
E
T
O
NA
T
IO
N
L
A
C
K
O
F
PO
W
E
R/
P
O
O
R
AC
CE
L
E
RA
T
ION
H
IG
H
I
D
L
E
/L
O
W
ID
L
E
RO
UGH
I
D
L
E
/H
U
N
T
ING
ID
LI
NG
VI
BR
A
T
IO
N
SL
OW
/N
O R
E
T
U
R
N
TO I
D
L
E
OV
ER
HE
A
T
S
/W
A
T
E
R
TE
M
P
ER
A
T
U
R
E
HI
GH
E
X
C
E
S
S
IV
E FU
EL
CO
NS
UM
P
T
IO
N
E
X
C
E
S
S
IV
E OI
L
CO
NS
UM
P
T
IO
N
BA
T
T
E
R
Y DE
AD
(
U
ND
ER
CH
AR
GE
)
Warranty symptom code
AA
AB
AC
AD
AE
AF
AG
AH
AJ
AK
AL
AM
HA
TROUBLE DIAGNOSIS
EC-95
C
D
E
F
G
H
I
J
K
L
M
A
EC
2007 Pathfinder
Engine Control Component Parts Location
UBS00K47
BBIA0536E
EC-96
TROUBLE DIAGNOSIS
2007 Pathfinder
BBIA0578E
TROUBLE DIAGNOSIS
EC-97
C
D
E
F
G
H
I
J
K
L
M
A
EC
2007 Pathfinder
BBIA0579E
EC-98
TROUBLE DIAGNOSIS
2007 Pathfinder
PBIB2530E
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