Nissan March K13. Manual - part 218

COMPONENT PARTS

EC-333

< SYSTEM DESCRIPTION >

[HR12DE (TYPE 2)]

Knock Sensor

INFOID:0000000006036735

The knock sensor is attached to the cylinder block. It senses engine
knocking using a piezoelectric element. A knocking vibration from
the cylinder block is sensed as vibrational pressure. This pressure is
converted into a voltage signal and sent to the ECM.

Cooling Fan

INFOID:0000000006036736

COOLING FAN CONTROL MODULE

Cooling fan control module receives ON/OFF pulse duty signal from IPDM E/R. Corresponding to this ON/OFF
pulse duty signal, cooling fan control module sends cooling fan motor operating voltage to cooling fan motor.
The revolution speed of cooling fan motor is controlled by duty cycle of the voltage.

COOLING FAN MOTOR

Cooling fan motor receives cooling fan motor operating voltage from cooling fan control module. The revolu-
tion speed of cooling fan motor is controlled by duty cycle of the voltage.

EVAP Canister Purge Volume Control Solenoid Valve

INFOID:0000000006036738

The EVAP canister purge volume control solenoid valve is used to
control the flow rate of fuel vapor from the EVAP canister. The EVAP
canister purge volume control solenoid valve is moved by ON/OFF
pulses from the ECM. The longer the ON pulse, the greater the
amount of fuel vapor that will flow through the valve.

Refrigerant Pressure Sensor

INFOID:0000000006036740

The refrigerant pressure sensor is installed at the condenser of the air conditioner system. The sensor uses an
electrostatic volume pressure transducer to convert refrigerant pressure to voltage. The voltage signal is sent
to ECM, and ECM controls cooling fan system.

JSBIA0284ZZ

PBIA9215J

PBIB2657E

EC-334

< SYSTEM DESCRIPTION >

[HR12DE (TYPE 2)]

COMPONENT PARTS

Stop Lamp Switch

INFOID:0000000006036741

Brake switch signal is applied to the ECM through the stop lamp
switch when the brake pedal is depressed. This signal is used
mainly to decrease the engine speed when the vehicle is being
driven.

JSBIA0308ZZ

SYSTEM

EC-335

< SYSTEM DESCRIPTION >

[HR12DE (TYPE 2)]

SYSTEM

ENGINE CONTROL SYSTEM

ENGINE CONTROL SYSTEM : System Diagram

INFOID:0000000006036802

JPBIA3238GB

EC-336

< SYSTEM DESCRIPTION >

[HR12DE (TYPE 2)]

SYSTEM

ENGINE CONTROL SYSTEM : System Description

INFOID:0000000006038721

ECM performs various controls such as fuel injection control and ignition timing control.

ENGINE CONTROL SYSTEM : Fail Safe

INFOID:0000000006036844

NON DTC RELATED ITEM

DTC RELATED ITEM

Detected

items

Engine operating condition

in fail-safe mode

Remarks

Reference page

Malfunction
indicator
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-509, "Compo-

nent Function

Check"

DTC No.

Detected items

Engine operating condition in fail safe mode

P0107
P0108

Manifold absolute pressure
(MAP) sensor

Engine speed will not rise more than 2,500 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 conditions.
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

C (104

Approx. 4 minutes or more after
engine starting

C (176

Except as shown above

40 - 80

C (104 - 176

(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.

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.

P1121

Electric throttle control ac-
tuator

(When electric throttle control actuator does not function properly due to the return spring
malfunction:)
ECM controls the electric throttle actuator by regulating the throttle opening around the
idle position. The engine speed will not rise more than 2,000 rpm.

(When throttle valve opening angle in fail safe mode is not in specified range:)
ECM controls the electric throttle control actuator by regulating the throttle opening to 20
degrees or less.

(When ECM detects the throttle valve is stuck open:)
While the vehicle is driving, it slows down gradually by fuel cut. After the vehicle stops, the
engine stalls.
The engine can restart in the Neutral position, and engine speed will not exceed 1,000 rpm
or more.

P1122

Electric throttle control
function

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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