Infiniti FX35, FX50 (S51). Manual — part 908
ECM
EC-1173
< ECU DIAGNOSIS INFORMATION >
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C
D
E
F
G
H
I
J
K
L
M
A
EC
N
P
O
JCBWA1539GB
EC-1174
< ECU DIAGNOSIS INFORMATION >
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ECM
JCBWA1540GB
ECM
EC-1175
< ECU DIAGNOSIS INFORMATION >
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C
D
E
F
G
H
I
J
K
L
M
A
EC
N
P
O
Fail-safe
INFOID:0000000005237650
NON DTC RELATED ITEM
JCBWA1541GB
EC-1176
< ECU DIAGNOSIS INFORMATION >
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ECM
DTC RELATED ITEM
Engine operating condi-
tion in fail-safe mode
Detected items
Remarks
Reference
page
Engine speed will not
rise more than 2,500 rpm
due to the fuel cut
Malfunction indicator
lamp circuit
When there is an open circuit on MIL circuit, the ECM cannot warn the
driver by illuminating MIL when there is malfunction on engine control
system.
Therefore, when electrical controlled throttle and part of ECM related
diagnoses are continuously detected as NG for 5 trips, ECM warns the
driver that engine control system malfunctions and MIL circuit is open
by means of operating the fail-safe function.
The fail-safe function also operates when above diagnoses except MIL
circuit are detected and demands the driver to repair the malfunction.
DTC No.
Detected items
Engine operating condition in fail-safe mode
U0113
U1003
U1024
Can communication circuit
VVEL actuator motor relay is turned off, and VVEL value is become at a minimum angle.
Engine speed will not rise more than 3,500 rpm due to the fuel cut.
P0011
P0021
Intake valve timing control
The signal is not energized to the intake valve timing control solenoid valve and the valve
control does not function.
P0014
P0024
Exhaust valve timing con-
trol
The signal is not energized to the exhaust valve timing control magnet retarder and the
magnet retarder control does not function.
P0102
P0103
P010C
P010D
Mass air flow sensor circuit
Engine speed will not rise more than 2,400 rpm due to the fuel cut.
P0117
P0118
Engine coolant tempera-
ture sensor circuit
Engine coolant temperature will be determined by ECM based on the following condition.
CONSULT-III displays the engine coolant temperature decided by ECM.
Condition
Engine coolant temperature decided
(CONSULT-III display)
Just as ignition switch is turned ON
or START
40
°
C (104
°
F)
Approx. 4 minutes or more after
engine starting
80
°
C (176
°
F)
Except as shown above
40 - 80
°
C (104 - 176
°
F)
(Depends on the time)
When the fail-safe system for engine coolant temperature sensor is activated, the cooling
fan operates while engine is running.
P0122
P0123
P0222
P0223
P0227
P0228
P1239
P2132
P2133
P2135
Throttle position sensor
The ECM controls the electric throttle control actuator in regulating the throttle opening in
order for the idle position to be within +10 degrees.
The ECM regulates the opening speed of the throttle valve to be slower than the normal
condition.
Therefore, the acceleration will be poor.
P0196
P0197
P0198
Engine oil temperature
sensor
Exhaust valve timing control does not function.
P0500
Vehicle speed sensor
The cooling fan operates (Highest) while engine is running.
P0524
Engine oil pressure
The signal is not energized to the intake valve timing control solenoid valve and the valve
control does not function.
Engine speed will not rise more than 2,400 rpm due to the fuel cut.
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