Nissan Rogue. Manual — part 441

EC-32

< SYSTEM DESCRIPTION >

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SYSTEM

ECM controls the engine by various functions.

Function

Reference

Multiport fuel injection system

EC-37, "MULTIPORT FUEL INJECTION SYSTEM : System De-
scription (with automatic air conditioner)"

Electric ignition system

EC-41, "ELECTRIC IGNITION SYSTEM : System Description"

Intake valve timing control

EC-42, "INTAKE VALVE TIMING CONTROL : System Description"

Exhaust valve timing control

EC-45, "EXHAUST VALVE TIMING CONTROL : System Descrip-
tion"

Intake manifold runner control

EC-46, "INTAKE MANIFOLD RUNNER CONTROL : System De-
scription"

Engine protection control

EC-46, "ENGINE PROTECTION CONTROL AT LOW ENGINE
OIL PRESSURE : System Description"

Fuel filler cap warning system

EC-50, "FUEL FILLER CAP WARNING SYSTEM : System De-
scription"

Air conditioning cut control

EC-47, "AIR CONDITIONING CUT CONTROL : System Descrip-
tion"

Power generation voltage variable control

EC-47, "POWER GENERATION VOLTAGE VARIABLE CON-
TROL SYSTEM : System Description"

Cooling fan control

EC-48, "COOLING FAN CONTROL : System Description"

Evaporative emission system

EC-55, "EVAPORATIVE EMISSION SYSTEM : System Descrip-
tion"

Automatic speed control device (ASCD)

EC-49, "AUTOMATIC SPEED CONTROL DEVICE (ASCD) : Sys-
tem Description"

CAN communication

EC-55, "CAN COMMUNICATION : System Description"

Sport mode

EC-56, "SPORT MODE CONTROL : System Description"

SYSTEM

EC-33

< SYSTEM DESCRIPTION >

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ENGINE CONTROL SYSTEM : Circuit Diagram

INFOID:0000000011518216

JSBIA5685GB

EC-34

< SYSTEM DESCRIPTION >

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SYSTEM

ENGINE CONTROL SYSTEM : Fail Safe

INFOID:0000000011551458

NON DTC RELATED ITEM

JSBIA4979GB

SYSTEM

EC-35

< SYSTEM DESCRIPTION >

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DTC RELATED ITEM

Description

When a DTC is detected, ECM executes a mode (in the Fail-safe mode) applicable to the DTC. The fail-safe

mode has the preset traveling control mode (accelerator angle variation and engine output limit) and device fix

mode.

Fail Safe Pattern

Fail Safe List

×:Applicable —: Not applicable

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.

EC-479, "Compo-

nent Function

Check"

Fail safe mode

Vehicle behavior

Traveling con-
trol mode

Accelerator an-
gle variation
control

ECM controls the accelerator pedal depression speed to make it slower than actual speed. This
causes a drop in accelerating performance and encourages the driver to repair malfunction.
NOTE:
ECM does not control the accelerator pedal releasing speed.

Engine output
control

ECM reduces the engine output, according to the rise in engine speed. This reduces the vehicle
speed to encourage the driver to repair malfunction.

Device fix mode

• This mode fixes the IVT control solenoid valve and the EVT control solenoid valve in the refer-

ence position.

• The intake manifold runner control valve motor is turned OFF (intake manifold runner control

valve opens).

Pattern

Fail safe mode

A

Traveling control mode

Accelerator angle variation control

B

Engine output control

C

Device fix mode

DTC

No.

Detected items

Vehicle behavior

Pattern

Others

A

B

C

P0011

Intake valve timing control

—

—

×

ECM activates the IVT intermediate lock control solenoid
valve to bring the cam sprocket into an intermediate lock con-
dition.

P0014
P0078

Exhaust valve timing control

—

—

×

—

P0101
P0102
P0103

Mass air flow sensor circuit

×

×

×

—

P0122
P0123
P0222
P0223
P2135

Throttle position sensor

—

—

—

The ECM controls the electric throttle control actuator in reg-
ulating 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.