2008 NISSAN TEANA Service Manual

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Page 1841 of 5121

NISSAN TEANA 2008 Service Manual EC-380
< ECU DIAGNOSIS >[VQ25DE, VQ35DE]
ECM
JCBWM0569GB

Page 1842 of 5121

NISSAN TEANA 2008 Service Manual ECM
EC-381
< ECU DIAGNOSIS >[VQ25DE, VQ35DE]
C
D
E
F
G
H
I
J
K
L
MA
EC
N
P O
JCBWM0570GB

Page 1843 of 5121

NISSAN TEANA 2008 Service Manual EC-382
< ECU DIAGNOSIS >[VQ25DE, VQ35DE]
ECM
JCBWM0571GB

Page 1844 of 5121

NISSAN TEANA 2008 Service Manual ECM
EC-383
< ECU DIAGNOSIS >[VQ25DE, VQ35DE]
C
D
E
F
G
H
I
J
K
L
MA
EC
N
P O
JCBWM0572GB

Page 1845 of 5121

NISSAN TEANA 2008 Service Manual EC-384
< ECU DIAGNOSIS >[VQ25DE, VQ35DE]
ECM
JCBWM0573GB

Page 1846 of 5121

NISSAN TEANA 2008 Service Manual ECM
EC-385
< ECU DIAGNOSIS >[VQ25DE, VQ35DE]
C
D
E
F
G
H
I
J
K
L
MA
EC
N
P O
JCBWM0574GB

Page 1847 of 5121

NISSAN TEANA 2008 Service Manual EC-386
< ECU DIAGNOSIS >[VQ25DE, VQ35DE]
ECM
Fail safe
INFOID:0000000003856870
NON DTC RELATED ITEM
JCBWM0575GB

Page 1848 of 5121

NISSAN TEANA 2008 Service Manual ECM
EC-387
< ECU DIAGNOSIS >[VQ25DE, VQ35DE]
C
D
E
F
G
H
I
J
K
L
MA
EC
N
P O
DTC RELATED ITEM
Engine operating condi-
tion in fail-safe modeDetected items RemarksReference
page
Engine speed will not

ECM
EC-387
< ECU DIAGNOSIS >[VQ25DE, VQ35DE]
C
D
E
F
G
H
I
J
K
L
MA
EC
N
P O
DTC RELATED ITEM
Engine operating condi-
tion in fail-safe modeDetected items RemarksReference
page
Engine speed will not
rise more than 2,500 rpm
due to the fuel cutMalfunction indicator
circuitWhen there is an open circuit on MI circuit, the ECM cannot warn the
driver by illuminating MI 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 MI circuit is open by
means of operating the fail-safe function.
The fail-safe function also operates when above diagnoses except MI
circuit are detected and demands the driver to repair the malfunction.EC-346
DTC No. Detected items Engine operating condition in fail-safe mode
P0011
P0021Intake valve timing control The signal is not energized to the intake valve timing control solenoid valve and the valve
control does not function.
P0102
P0103Mass air flow sensor circuit Engine speed will not rise more than 2,400 rpm due to the fuel cut.
P0117
P0118Engine coolant tempera-
ture sensor circuitEngine coolant temperature will be determined by ECM based on the following condition.
CONSULT-III displays the engine coolant temperature decided by ECM.
ConditionEngine coolant temperature decided
(CONSULT-III display)
Just as ignition switch is turned ON
or START40°C (104°F)
Approx. 4 minutes or more after
engine starting80°C (176°F)
Except as shown above40 - 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
P2135Throttle 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.
So, the acceleration will be poor.
P0500 Vehicle speed sensor The cooling fan operates (Highest) while engine is running.
P0605 ECM (When ECM calculation function is a malfunctioning:)
ECM stops the electric throttle control actuator control, throttle valve is maintained at a
fixed opening (approx. 5 degrees) by the return spring.
ECM deactivates ASCD operation.
P0643 Sensor power supply ECM stops the electric throttle control actuator control, throttle valve is maintained at a
fixed opening (approx. 5 degrees) by the return spring.
P1805 Brake switch ECM controls the electric throttle control actuator by regulating the throttle opening to a
small range.
Therefore, acceleration will be poor.
Vehicle condition Driving condition
When engine is idling Normal
When accelerating Poor acceleration
P2100
P2103Throttle control motor relay ECM stops the electric throttle control actuator control, throttle valve is maintained at a
fixed opening (approx. 5 degrees) by the return spring.
P2101 Electric throttle control
functionECM stops the electric throttle control actuator control, throttle valve is maintained at a
fixed opening (approx. 5 degrees) by the return spring.
P2118 Throttle control motor ECM stops the electric throttle control actuator control, throttle valve is maintained at a
fixed opening (approx. 5 degrees) by the return spring.

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