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Nissan March K13. Manual - part 225

ECM

EC-361

< ECU DIAGNOSIS INFORMATION >

[HR12DE (TYPE 2)]

(P)

(B)

Manifold absolute pressure
(MAP) sensor

Output

[Engine is running]
• Warm-up condition
• Both A/C switch and blower fan

switch: ON (Compressor operates)

4.5 V
Output voltage varies with atmo-
spheric pressure.

[Engine is running]
• Warm-up condition
• Idle speed

1.5 V

[Engine is running]
• Warm-up condition
• Engine speed: 2,000 rpm

1.2 V

(P)

(B)

Intake air temperature sen-
sor

Input

[Engine is running]

0 - 4.8 V
Output voltage varies with intake
air temperature.

(SB)

(P)

Heated oxygen sensor 1

—

[Engine is running]
• Warm-up condition
• Engine speed: 2,000 rpm

0 - 1.0 V
(Periodically change)

(W)

(B)

Heated oxygen sensor 2

Input

[Engine is running]
• Revving engine from idle to 3,000

rpm quickly after the following condi-
tions are met

- Engine: after warming up
- Keeping the engine speed between

3,500 and 4,000 rpm for 1 minute
and at idle for 1 minute under no
load

0 - 1.0 V

(P)

—

Sensor ground
(Heated oxygen sensor 1)

—

(B)

—

Sensor ground
(Heated oxygen sensor 2)

—

(W)

(R)

Crankshaft position sensor
(POS)

Input

[Engine is running]
• Warm-up condition
• Idle speed

NOTE:
The pulse cycle changes depending
on rpm at idle

4.0 V

[Engine is running]
• Engine speed: 2,000 rpm

4.0 V

(W)

(BR)

Sensor power supply
(Refrigerant pressure sen-
sor)

—

[Ignition switch: ON]

5 V

(R)

—

Sensor ground
[Crankshaft position sensor
(POS)]

—

(BR)

—

Sensor ground
[Camshaft position sensor
(PHASE)]

—

Terminal No.

Description

Condition

Value

(Approx.)

–

Signal name

Input/

Output

JSBIA0395GB

JSBIA0396GB

EC-362

< ECU DIAGNOSIS INFORMATION >

[HR12DE (TYPE 2)]

ECM

(G)

(BR)

Camshaft position sensor
(PHASE)

Input

[Engine is running]
• Warm-up condition
• Idle speed

NOTE:
The pulse cycle changes depending
on rpm at idle

0.8 V

[Engine is running]
• Engine speed is 2,000 rpm

0.8 V

(BR)

(R)

Sensor power supply
[Crankshaft position sensor
(POS)]

—

[Ignition switch: ON]

5 V

(O)

(BR)

Sensor power supply
[Camshaft position sensor
(PHASE)]

—

[Ignition switch: ON]

5 V

(V)

(Y)

Sensor power supply
(Throttle position sensor)

—

[Ignition switch: ON]

5 V

(W)

(B)

Park/Neutral position signal

Input

[Ignition switch: ON]
• Shift lever: Neutral position

BATTERY VOLTAGE
(11 - 14 V)

[Ignition switch: ON]
• Shift lever: Except above position

0 V

(V)

(Y)

Sensor power supply
[Manifold absolute pressure
(MAP) sensor]

—

[Ignition switch: ON]

5 V

(V)

(Y)

Power supply for ECM
(Back-up)

Input

[Ignition switch: OFF]

BATTERY VOLTAGE
(11 - 14 V)

(P)

—

CAN communication line

Input/

Output

—

(L)

—

CAN communication line

Input/

Output

—

(SB)

—

Data link connector

Input/

Output

—

(O)

(B)

Ignition switch

Input

[Ignition switch: OFF]

0 V

[Ignition switch: ON]

BATTERY VOLTAGE
(11 - 14 V)

(R)

(B)

Stop lamp switch

Input

[Ignition switch: OFF]
• Brake pedal: Fully released

0 V

[Ignition switch: OFF]
• Brake pedal: Slightly depressed

BATTERY VOLTAGE
(11 - 14 V)

(BR)

(R)

Sensor power supply
(Accelerator pedal position
sensor 2)

—

[Ignition switch: ON]

5 V

Terminal No.

Description

Condition

Value

(Approx.)

–

Signal name

Input/

Output

JSBIA0397GB

JSBIA0398GB

ECM

EC-363

< ECU DIAGNOSIS INFORMATION >

[HR12DE (TYPE 2)]

: Average voltage for pulse signal (Actual pulse signal can be confirmed by oscilloscope.)

Fail Safe

INFOID:0000000005888309

NON DTC RELATED ITEM

DTC RELATED ITEM

(W)

(R)

Accelerator pedal position
sensor 2

Input

[Ignition switch: ON]
• Engine stopped
• Accelerator pedal: Fully released

0.3 - 0.6 V

[Ignition switch: ON]
• Engine stopped
• Accelerator pedal: Fully depressed

1.95 - 2.4 V

(R)

—

Sensor ground
(Accelerator pedal position
sensor 2)

—

(G)

(B)

Power supply for ECM

Input

[Ignition switch: ON]

BATTERY VOLTAGE
(11 - 14 V)

(V)

(GR)

Sensor power supply
(Accelerator pedal position
sensor 1)

—

[Ignition switch: ON]

5 V

(B)

—

ECM ground

—

(SB)

(GR)

Accelerator pedal position
sensor 1

Input

[Ignition switch: ON]
• Engine stopped
• Accelerator pedal: Fully released

0.6 - 0.9 V

[Ignition switch: ON]
• Engine stopped
• Accelerator pedal: Fully depressed

3.9 - 4.7 V

(GR)

—

Sensor ground
(Accelerator pedal position
sensor 1)

—

(B)

—

ECM ground

—

Terminal No.

Description

Condition

Value

(Approx.)

–

Signal name

Input/

Output

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.

EC-364

< ECU DIAGNOSIS INFORMATION >

[HR12DE (TYPE 2)]

ECM

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.

P1124
P1126

Throttle 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.

P1128

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.

P1171

Intake air

When accelerator pedal is depressed, engine speed will not rise more than 2,500 rpm due
to fuel cut.

P1229

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

P2122
P2123
P2127
P2128
P2138

Accelerator pedal position
sensor

DTC No.

Detected items

Engine operating condition in fail safe mode

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