Nissan Rogue. Manual - part 550

EC-468

< DTC/CIRCUIT DIAGNOSIS >

[QR25DE]

FUEL INJECTOR

Is the inspection result normal?

YES

>> Perform the trouble diagnosis for power supply circuit.

NO

>> Repair or replace error-detected parts.

3.

CHECK FUEL INJECTOR OUTPUT SIGNAL CIRCUIT

1. Turn ignition switch OFF.

2. Disconnect ECM harness connector.

3. Check the continuity between fuel injector harness connector and ECM harness connector.

4. Also check harness for short to ground and to power.
Is the inspection result normal?

YES

>> GO TO 4.

NO

>> Repair open circuit, short to ground or short to power in harness or connectors.

4.

CHECK FUEL INJECTOR

Check fuel injector. Refer to 

EC-468, "Component Inspection"

.

Is the inspection result normal?

YES

>> GO TO 5.

NO

>> Replace malfunctioning fuel injector. Refer to 

EM-45, "Exploded View"

.

5.

CHECK INTERMITTENT INCIDENT

Check intermittent incident. Refer to 

GI-44, "Intermittent Incident"

.

Is the inspection result normal?

YES

>> Replace IPDM E/R. Refer to 

PCS-40, "Removal and Installation"

.

NO

>> Repair or replace error-detected parts.

Component Inspection

INFOID:0000000011278184

1.

CHECK FUEL INJECTOR

1. Turn ignition switch OFF.

2. Disconnect fuel injector harness connector.

+

-

Continuity

Fuel injector

IPDM E/R

Cylinder

Connector

Terminal

Connector

Terminal

1

F11

1

E121

43

Existed

2

F12

1

3

F14

1

4

F13

1

+

-

Continuity

Fuel injector

ECM

Cylinder

Connector

Terminal

Connector

Terminal

1

F11

2

F51

13

Existed

2

F12

2

14

3

F14

2

10

4

F13

2

9

FUEL INJECTOR

EC-469

< DTC/CIRCUIT DIAGNOSIS >

[QR25DE]

C

D

E

F

G

H

I

J

K

L

M

A

EC

N

P

O

3. Check resistance between fuel injector terminals as per the fol-

lowing.

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> Replace malfunctioning fuel injector. Refer to 

EM-45,

"Removal and Installation"

.

Fuel injector

Resistance

+

-

Terminal

1

2

11.1 - 14.5 

Ω [at 10 - 60°C (50 - 140°F)]

PBIA9579J

EC-470

< DTC/CIRCUIT DIAGNOSIS >

[QR25DE]

FUEL PUMP

FUEL PUMP

Description

INFOID:0000000011278185

*: ECM determines the start signal status by the signals of engine speed and battery voltage.

The ECM activates the fuel pump for several seconds after the ignition switch is turned ON to improve engine

start ability. If the ECM receives a engine speed signal from the camshaft position sensor (PHASE), it knows

that the engine is rotating, and causes the pump to operate. If the engine speed signal is not received when

the ignition switch is ON, the engine stalls. The ECM stops pump operation and prevents battery discharging,

thereby improving safety. The ECM does not directly drive the fuel pump. It controls the ON/OFF fuel pump

relay, which in turn controls the fuel pump.

Component Function Check

INFOID:0000000011278186

1.

CHECK FUEL PUMP FUNCTION

1. Turn ignition switch ON.

2. Pinch fuel feed hose with two fingers.

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> Proceed to 

EC-470, "Diagnosis Procedure"

.

Diagnosis Procedure

INFOID:0000000011278187

1.

CHECK FUEL PUMP RELAY CONTROL SIGNAL

1. Turn ignition switch ON.

2. Check the voltage between ECM harness connector.

Is the inspection result normal?

YES

>> GO TO 3.

NO

>> GO TO 2.

2.

CHECK FUEL PUMP RELAY CONTROL SIGNAL CIRCUIT

1. Turn ignition switch OFF.

2. Disconnect ECM harness connector.

3. Disconnect IPDM E/R harness connector.

Sensor

Input signal to ECM

ECM Function

Actuator

Crankshaft position sensor (POS)
Camshaft position sensor (PHASE)

Engine speed*

Fuel pump control

Fuel pump relay
↓
Fuel pump

Battery

Battery voltage*

Condition

Fuel pump operation

Ignition switch is turned to ON.

Operates for 1 second.

Engine running and cranking

Operates.

When engine is stopped

Stops in 1.5 seconds.

Except as shown above

Stops.

Fuel pressure pulsation should be felt on the fuel feed 
hose for 1 second after ignition switch is turned ON.

ECM

Voltage

+

-

Connector

Terminal

Connector

Terminal

F51

18

E16

128

Battery voltage should exist 1 second after 
ignition switch is turn ON.

FUEL PUMP

EC-471

< DTC/CIRCUIT DIAGNOSIS >

[QR25DE]

C

D

E

F

G

H

I

J

K

L

M

A

EC

N

P

O

4. Check the continuity between ECM harness connector and IPDM E/R harness connector.

5. Also check harness for short to ground and to power.
Is the inspection result normal?

YES

>> GO TO 7.

NO

>> Repair or replace error-detected parts.

3.

CHECK FUEL PUMP POWER SUPPLY

1. Turn ignition switch OFF.

2. Disconnect “fuel level sensor unit and fuel pump” harness connector.

3. Turn ignition switch ON.

4. Check the voltage between “fuel level sensor unit and fuel pump” harness connector and ground.

Is the inspection result normal?

YES

>> GO TO 5.

NO

>> GO TO 4.

4.

CHECK FUEL PUMP POWER SUPPLY CIRCUIT

1. Turn ignition switch OFF.

2. Disconnect IPDM E/R harness connector.

3. Check the continuity between IPDM E/R harness connector and “fuel level sensor unit and fuel pump”

harness connector.

4. Also check harness for short to ground and to power.
Is the inspection result normal?

YES

>> GO TO 7.

NO

>> Repair or replace error-detected parts.

5.

CHECK FUEL PUMP GROUND CIRCUIT

1. Check the continuity between “fuel level sensor unit and fuel pump” and ground. 

2. Also heck harness for short to power. 
Is the inspection result normal?

+

-

Continuity

ECM

IPDM E/R

Connector

Terminal

Connector

Terminal

F51

18

F35

76

Existed

+

-

Voltage

Fuel level sensor unit 

and fuel pump

Connector

Terminal

B103

6

Ground

Battery voltage should exist 1 second 
after ignition switch is turn ON.

+

-

Continuity

IPDM E/R

Fuel level sensor unit and 

fuel pump

Connector

Terminal

Connector

Terminal

E121

46

B103

6

Existed

+

-

Continuity

Fuel level sensor unit and fuel pump

Connector

Terminal

B103

4

Ground

Existed