Nissan Juke F15. Manual - part 433

FUEL INJECTOR

EC-545

< DTC/CIRCUIT DIAGNOSIS >

[MR FOR NISMO RS MODELS]

C

D

E

F

G

H

I

J

K

L

M

A

EC

N

P

O

3. Check the continuity between fuel heater relay terminals as per

the following conditions.

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> Replace fuel injector relay.

Fuel injector relay

Conditions

Continuity

+

−

Terminal

3

5

12 V direct current supply between ter-
minals 1 and 2

Existed

No current supply

Not existed

6

7

12 V direct current supply between ter-
minals 1 and 2

Existed

No current supply

Not existed

PBIB0077E

EC-546

< DTC/CIRCUIT DIAGNOSIS >

[MR FOR NISMO RS MODELS]

LOW PRESSURE FUEL PUMP

LOW PRESSURE FUEL PUMP

Component Function Check

INFOID:0000000012198091

1.

CHECK FUEL PUMP FUNCTION

1. Turn ignition switch ON.

2. Pinch fuel feed hose with two fingers.

NOTE:

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

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> Proceed to 

EC-546, "Diagnosis Procedure"

.

Diagnosis Procedure

INFOID:0000000012198092

1.

CHECK FUEL PUMP RELAY POWER SUPPLY

1. Turn ignition switch OFF.

2. Disconnect ECM harness connector.

3. Turn ignition switch ON.

4. Check the voltage between ECM harness connector terminals.

Is the inspection result normal?

YES

>> GO TO 3.

NO

>> GO TO 2.

2.

CHECK FUEL PUMP RELAY POWER SUPPLY CIRCUIT

1. Turn ignition switch OFF.

2. Disconnect IPDM E/R harness connector.

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

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

YES

>> Perform the trouble diagnosis for power supply circuit.

NO

>> Repair or replace error-detected parts.

3.

CHECK LOW FUEL PUMP POWER SUPPLY

1. Turn ignition switch OFF.

2. Reconnect ECM harness connector.

3. Disconnect fuel level sensor unit and fuel pump harness connector.

4. Turn ignition switch ON.

5. Check the voltage between fuel level sensor unit and fuel pump harness connector and ground.

ECM

Voltage

Connector

+

−

Terminal

E18

117

127

Battery voltage

+

−

Continuity

ECM

IPDM E/R

Connector

Terminal

Connector

Terminal

E18

117

E13

31

Existed

LOW PRESSURE FUEL PUMP

EC-547

< DTC/CIRCUIT DIAGNOSIS >

[MR FOR NISMO RS MODELS]

C

D

E

F

G

H

I

J

K

L

M

A

EC

N

P

O

Is the inspection result normal?

YES

>> GO TO 5.

NO

>> GO TO 4.

4.

CHECK LOW FUEL PUMP POWER SUPPLY CIRCUIT

1. Turn ignition switch OFF.

2. Disconnect IPDM E/R harness connector.

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

ness connector.

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

YES

>> Perform the trouble diagnosis for power supply circuit.

NO

>> Repair or replace error-detected parts.

5.

CHECK LOW FUEL PUMP GROUND CIRCUIT

1. Turn ignition switch OFF.

2. Check the continuity between fuel level sensor unit and fuel pump harness connector and ground.

3. Also check harness for short to power.
Is the inspection result normal?

YES

>> GO TO 6.

NO

>> Repair or replace error-detected parts.

6.

CHECK LOW FUEL PUMP

Check the low fuel pump. Refer to 

EC-547, "Component Inspection"

.

Is the inspection result normal?

YES

>> Check intermittent incident. Refer to 

GI-45, "Intermittent Incident"

.

NO

>> Replace fuel level sensor unit and fuel pump. Refer to 

FL-6, "2WD : Exploded View"

.

Component Inspection

INFOID:0000000012198093

1.

CHECK FUEL PRESSURE REGULATOR

1. Turn ignition switch OFF.

2. Check low fuel pressure. Refer to 

EC-166, "Work Procedure"

.

Is inspection result normal?

+

−

Voltage

Fuel level sensor unit 

and fuel pump

Connector

Terminal

B46

1

Ground

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

+

−

Continuity

Fuel level sensor unit and 

fuel pump

IPDM E/R

Connector

Terminal

Connector

Terminal

B46

1

E15

54

Existed

+

−

Continuity

Fuel level sensor unit and 

fuel pump

Connector

Terminal

B46

3

Ground

Existed

EC-548

< DTC/CIRCUIT DIAGNOSIS >

[MR FOR NISMO RS MODELS]

LOW PRESSURE FUEL PUMP

YES

>> INSPECTION END

NO

>> GO TO 2.

2.

CHECK LOW PRESSURE FUEL PUMP

1. Turn ignition switch OFF.

2. Disconnect fuel level sensor unit.

3. Check resistance between fuel level sensor unit terminals as follows.

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> Replace fuel level sensor unit. Refer to 

FL-6, "2WD : Exploded View"

.

Fuel level sensor unit

Condition

Resistance

+

−

Terminals

2

4

Temperature: 25

°C (77°F)

0.2 - 5.0 

Ω