Nissan Juke F15. Manual - part 432

FUEL INJECTOR

EC-541

< DTC/CIRCUIT DIAGNOSIS >

[MR FOR NISMO RS MODELS]

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FUEL INJECTOR

Component Function Check

INFOID:0000000012198087

1.

INSPECTION START

Turn ignition switch to START.
Is any cylinder ignited?

YES

>> GO TO 2.

NO

>> Proceed to 

EC-541, "Diagnosis Procedure"

.

2.

CHECK FUEL INJECTOR FUNCTION

With CONSULT

1. Start engine.

2. Perform “POWER BALANCE” in “ACTIVE TEST” mode of “ENGINE” using CONSULT.

3. Check that each circuit produces a momentary engine speed drop.

Without CONSULT

1. Let engine idle.

2. Listen to each fuel injector operating sound.

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> Proceed to 

EC-541, "Diagnosis Procedure"

.

Diagnosis Procedure

INFOID:0000000012198088

1.

CHECK FUEL INJECTOR POWER SUPPLY CIRCUIT

1. Turn ignition switch OFF.

2. Disconnect fuel injector harness connector.

3. Turn ignition switch ON.

4. Check the voltage between fuel injector harness connector and ground.

Is the inspection result normal?

YES

>> GO TO 9.

NO

>> GO TO 2.

2.

CHECK FUEL INJECTOR POWER SUPPLY CIRCUIT

1. Turn ignition switch OFF.

2. Disconnect ECM harness connector.

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

Clicking noise should be heard.

PBIB3332E

+

−

Voltage

Fuel injector

Cylinder

Connector

Terminal

1

F65

1

Ground

Battery voltage

2

F66

1

3

F67

1

4

F68

1

EC-542

< DTC/CIRCUIT DIAGNOSIS >

[MR FOR NISMO RS MODELS]

FUEL INJECTOR

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

YES

>> GO TO 3. 

NO

>> Repair or replace error-detected parts.

3.

CHECK FUEL INJECTOR DRIVER POWER SUPPLY

1. Reconnect ECM harness connector.

2. Turn ignition switch ON.

3. Check the voltage between ECM harness connector and ground.

Is the inspection result normal?

YES

>> Check intermittent incident. Refer to 

GI-45, "Intermittent Incident"

NO

>> GO TO 4.

4.

CHECK FUEL INJECTOR DRIVER POWER SUPPLY CIRCUIT

1. Turn ignition switch OFF.

2. Disconnect ECM harness connector.

3. Disconnect fuel injector relay harness connector.

4. Check the continuity between ECM harness connector and fuel injector relay harness connector.

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

YES

>> GO TO 5.

NO

>> Repair or replace error-detected parts

5.

CHECK FUEL INJECTOR RELAY POWER SUPPLY (CONTACT SIDE)

Check the voltage between fuel injector relay harness connector and ground.

+

−

Continuity

Fuel injector

ECM

Cylinder

Connector

Terminal

Connector

Terminal

1

F65

1

F25

3

Existed

2

F66

1

4

3

F67

1

4

F68

1

3

+

−

Voltage

ECM

Connector

Terminal

F26

49

Ground

Battery voltage

53

+

−

Continuity

ECM

Fuel injector relay

Connector

Terminal

Connector

Terminal

F26

49

E57

5

Existed

53

7

+

−

Voltage

Fuel injector relay

Connector

Terminal

E57

3

Ground

Battery voltage

6

FUEL INJECTOR

EC-543

< DTC/CIRCUIT DIAGNOSIS >

[MR FOR NISMO RS MODELS]

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Is the inspection result normal?

YES

>> GO TO 6.

NO

>> Perform the trouble diagnosis for power supply circuit.

6.

CHECK FUEL INJECTOR RELAY POWER SUPPLY (EXCITATION COIL SIDE)

1. Reconnect all harness connectors disconnected.

2. Turn ignition switch ON.

3. Check the voltage between fuel injector relay harness connector and ground.

Is the inspection result normal?

YES

>> GO TO 8.

NO

>> GO TO 7

7.

CHECK FUEL INJECTOR RELAY POWER SUPPLY CIRCUIT (EXCITATION COIL SIDE)

1. Turn ignition switch OFF.

2. Disconnect fuel injector relay harness connector.

3. Disconnect IPDM E/R harness connector.

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

5. 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.

8.

CHECK FUEL INJECTOR RELAY GROUND CIRCUIT

1. Turn ignition switch OFF.

2. Disconnect fuel injector relay harness connector.

3. Check the continuity between fuel injector relay harness connector and ground.

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

YES

>> GO TO 10.

NO

>> Repair or replace error-detected parts.

9.

CHECK FUEL INJECTOR GROUND CIRCUIT

1. Turn ignition switch OFF.

2. Disconnect ECM harness connector.

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

+

−

Voltage

Fuel injector relay

Connector

Terminal

E57

1

Ground

Battery voltage

+

−

Continuity

IPDM E/R

Fuel injector relay

Connector

Terminal

Connector

Terminal

E14

35

E57

1

Existed

+

−

Continuity

Fuel injector relay

Connector

Terminal

E57

2

Ground

Existed

EC-544

< DTC/CIRCUIT DIAGNOSIS >

[MR FOR NISMO RS MODELS]

FUEL INJECTOR

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

YES

>> GO TO 11.

NO

>> Repair or replace error-detected parts.

10.

CHECK FUEL INJECTOR RELAY

Check the fuel injector relay. Refer to 

EC-544, "Component Inspection (Fuel Injector Relay)"

.

Is the inspection result normal?

YES

>> Check intermittent incident. Refer to 

GI-45, "Intermittent Incident"

NO

>> Replace fuel injector relay. Refer to 

PG-9, "Standardized Relay"

.

11.

CHECK FUEL INJECTOR

Check the fuel injector. Refer to 

EC-544, "Component Inspection (Fuel Injector)"

.

Is the inspection result normal?

YES

>> Check intermittent incident. Refer to 

GI-45, "Intermittent Incident"

NO

>> Replace malfunctioning fuel injector. Refer to 

EM-54, "Exploded View"

.

Component Inspection (Fuel Injector)

INFOID:0000000012198089

1.

CHECK FUEL INJECTOR

1. Turn ignition switch OFF.

2. Disconnect fuel injector harness connector.

3. Check resistance between fuel injector terminals as per the following.

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> Replace malfunctioning fuel injector.

EM-54, "Exploded View"

Component Inspection (Fuel Injector Relay)

INFOID:0000000012198090

1.

CHECK FUEL INJECTOR RELAY

1. Turn ignition switch OFF.

2. Remove fuel injector relay.

+

−

Continuity

Fuel injector

ECM

Cylinder

Connector

Terminal

Connector

Terminal

1

F65

2

F25

5

Existed

2

F66

2

6

3

F67

2

7

4

F68

2

8

Fuel injector

Resistance

+

−

Terminals

1

2

1.44 - 1.73 

Ω [at 10 - 60°C (50 - 140°F)]