Nissan Versa Sedan. Instruction - part 258
SYSTEM
EC-31
< SYSTEM DESCRIPTION >
[HR16DE]
C
D
E
F
G
H
I
J
K
L
M
A
EC
N
P
O
ENGINE CONTROL SYSTEM : System Description
INFOID:0000000009266989
ECM performs various controls such as fuel injection control and ignition timing control.
ENGINE CONTROL SYSTEM : Fail Safe
INFOID:0000000009619854
NON DTC RELATED ITEM
DTC RELATED ITEM
Detected
items
Engine operating condition
in fail-safe mode
Remarks
Reference page
Malfunction
indicator
lamp circuit
Engine speed will not rise
more than 2,500 rpm due
to the fuel cut
When there is an open circuit on MIL circuit, the ECM cannot warn the
driver by lighting up 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 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
P0011
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
Exhaust valve timing control
The signal is not energized to the exhaust valve timing control solenoid valve and the valve
control does not function.
P0101
P0102
P0103
Mass air flow sensor circuit
Engine speed will not rise more than 2,400 rpm due to the fuel cut.
P0117
P0118
Engine coolant temperature
sensor circuit
Engine coolant temperature will be determined by ECM based on the following conditions.
CONSULT displays the engine coolant temperature decided by ECM.
Condition
Engine coolant temperature decided
(CONSULT 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
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.
So, 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
• ECM illuminates oil pressure warning lamp on the combination meter.
• Engine speed will not rise more than 4,000 rpm due to the fuel cut.
• Fail-safe is canceled when ignition switch OFF
→ ON.
P0605
ECM
(When ECM calculation function is malfunctioning:)
ECM stops the electric throttle control actuator control, throttle valve is maintained at a
fixed opening (approx. 5 degrees) by the return spring.
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.