Infiniti M45 (Y34). Manual - part 350
TROUBLE DIAGNOSIS
EC-89
C
D
E
F
G
H
I
J
K
L
M
A
EC
1 - 6: The numbers refer to the order of inspection.
Valve
mecha-
nism
Timing chain
5
5
5
5
5
5
5
5
Camshaft
Intake valve timing control
Intake valve
5
5
5
5
5
5
5
5
3
Exhaust valve
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
IVIS (INFINITI Vehicle Immobilizer System —
NATS)
1
1
SYMPTOM
Reference
page
HARD/
NO ST
AR
T
/REST
AR
T (
EXCP
. H
A
)
ENGI
NE ST
ALL
HESI
T
A
TION/
S
URGING/
FL
A
T
SPOT
SP
ARK KNOCK/DET
O
NA
TI
ON
L
A
CK OF
POW
E
R/POO
R
ACCEL
E
RA
TION
HI
GH I
D
L
E
/L
OW
I
D
L
E
ROUG
H IDL
E
/HUNTING
ID
L
ING VI
BRA
T
ION
SL
OW
/N
O RETURN
T
O
I
D
L
E
OVERHEA
T
S/
W
A
TER TEMPERA
T
URE HI
GH
EXCESSIVE F
U
E
L
CONSUM
P
T
IO
N
EXCESSIVE OIL
CONSUM
P
T
ION
BA
TTER
Y
DEAD (
UNDER CHARGE)
Warranty symptom code
AA
AB
AC
AD
AE
AF
AG
AH
AJ
AK
AL
AM
HA