Infiniti FX35, FX50 (S51). Manual — part 920
VVEL CONTROL MODULE
EC-1221
< ECU DIAGNOSIS INFORMATION >
[VK50VE]
C
D
E
F
G
H
I
J
K
L
M
A
EC
N
P
O
JCBWA1540GB
EC-1222
< ECU DIAGNOSIS INFORMATION >
[VK50VE]
VVEL CONTROL MODULE
JCBWA1541GB
ENGINE CONTROL SYSTEM SYMPTOMS
EC-1223
< SYMPTOM DIAGNOSIS >
[VK50VE]
C
D
E
F
G
H
I
J
K
L
M
A
EC
N
P
O
SYMPTOM DIAGNOSIS
ENGINE CONTROL SYSTEM SYMPTOMS
Symptom Table
INFOID:0000000005237657
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
EC-1224
< SYMPTOM DIAGNOSIS >
[VK50VE]
ENGINE CONTROL SYSTEM SYMPTOMS
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
EC-805
EC-809
EC-812
EC-815
EC-1088
Throttle position sensor circuit
2
2
EC-795
EC-860
EC-1002
EC-1004
EC-1015
Accelerator pedal position sensor circuit
3
2
1
Knock sensor circuit
2
3
Engine oil temperature sensor
4
2
3
Crankshaft position sensor circuit
2
2
Camshaft position sensor circuit
3
2
Vehicle speed signal circuit
2
3
3
3
Power steering pressure sensor circuit
2
3
3
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
VVEL control module
3
4
4
3
VVEL actuator motor
3
4
4
3
VVEL actuator motor relay
3
4
4
3
VVEL actuator shaft position sensor
3
4
4
3
PNP signal circuit
3
3
3
3
3
SYMPTOM
Reference
page
HARD/NO S
T
A
R
T/RES
T
A
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
L
OW/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
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