Infiniti FX35, FX50 (S51). Manual - part 921
ENGINE CONTROL SYSTEM SYMPTOMS
EC-1225
< SYMPTOM DIAGNOSIS >
[VK50VE]
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 page)
SYSTEM — ENGINE MECHANICAL & OTHER
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
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
SYMPTOM
Reference
page
HARD/NO ST
AR
T/REST
AR
T (EXCP
. HA)
ENGINE ST
ALL
HESIT
A
TIO
N
/SURG
IN
G/FLA
T
S
P
OT
SP
ARK K
N
OCK/
DET
O
NA
TION
LACK OF P
O
WER/POOR ACCELE
R
A
TIO
N
HIGH I
D
L
E/L
OW IDL
E
ROUGH IDLE
/HUN
TING
IDL
ING VIB
R
A
T
IO
N
SLOW/NO RETURN T
O
IDLE
OVERHEA
T
S/W
A
TER TEMPERA
T
URE HIGH
EXCE
SSIVE FUEL C
O
NSUMP
T
ION
EXCE
SSIVE OI
L
CONSUMP
T
IO
N
BA
TTE
R
Y DEA
D
(UND
E
R
CHARG
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 gasoline,
Low octane)
—