Nissan X-Trail 32. Manual - part 814

P2138 APP SENSOR

EC-385

< DTC/CIRCUIT DIAGNOSIS >

[MR20DD]

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Component Inspection

INFOID:0000000010775277

1.

CHECK ACCELERATOR PEDAL POSITION SENSOR

1.

Turn ignition switch OFF.

2.

Reconnect all harness connectors disconnected.

3.

Turn ignition switch ON.

4.

Check the voltage between ECM harness connector terminals as per the following condition.

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> Replace accelerator pedal assembly. Refer to 

ACC-4, "Removal and Installation"

.

ECM

Condition

Voltage

Connector

+

–

Terminal

E16

126

127

Accelerator pedal

Fully released

0.6 - 0.9 V

Fully depressed

3.9 - 4.7 V

119

120

Fully released

0.3 - 0.6 V

Fully depressed

1.95 - 2.4 V

EC-386

< DTC/CIRCUIT DIAGNOSIS >

[MR20DD]

FUEL INJECTOR

FUEL INJECTOR

Component Function Check

INFOID:0000000010775278

1.

INSPECTION START

Turn ignition switch to START.
Are any cylinders ignited?

YES

>> GO TO 2.

NO

>> Proceed to 

EC-386, "Diagnosis Procedure"

.

2.

CHECK FUEL INJECTOR FUNCTION

With CONSULT

1.

Start engine.

2.

Perform “POWER BALANCE” in “ACTIVE TEST” mode with CONSULT.

3.

Check that each circuit produces a momentary engine speed drop.

Without CONSULT

1.

Start engine and let it idle.

2.

Listen to each fuel injector operating sound.

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> Proceed to 

EC-386, "Diagnosis Procedure"

.

Diagnosis Procedure

INFOID:0000000010775279

1.

CHECK FUEL INJECTOR POWER SUPPLY

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 sound should be heard.

PBIB3332E

+

−

Voltage

Fuel injector

Cylinder

Connector

Terminal

1

F37

1

Ground

Battery voltage

2

F38

1

3

F39

1

4

F40

1

FUEL INJECTOR

EC-387

< DTC/CIRCUIT DIAGNOSIS >

[MR20DD]

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4.

Also check harness for short to power.

Is the inspection result normal?

YES

>> GO TO 3.

NO

>> Repair or replace malfunctioning part.

3.

CHECK FUEL INJECTOR DRIVER POWER SUPPLY

1.

Disconnect ECM harness connector.

2.

Turn ignition switch ON.

3.

Check the continuity between ECM harness connector and ground.

Is the inspection result normal?

YES

>> Check intermittent incident. Refer to 

GI-44, "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 power.

Is the inspection result normal?

YES

>> GO TO 5.

NO

>> Repair or replace malfunctioning part.

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

F37

1

F7

1

Existed

2

F38

1

2

3

F39

1

3

4

F40

1

4

+

−

Voltage

ECM

Connector

Terminal

F8

49

Ground

Battery voltage

53

+

−

Continuity

ECM

Fuel injector relay

Connector

Terminal

Connector

Terminal

F8

49

F26

5

Existed

53

7

+

−

Voltage

Fuel injector relay

Connector

Terminal

F26

3

Ground

Battery voltage

6

EC-388

< DTC/CIRCUIT DIAGNOSIS >

[MR20DD]

FUEL INJECTOR

Is the inspection result normal?

YES

>> GO TO 6.

NO

>> Perform trouble diagnosis for power supply circuit.

6.

CHECK FUEL INJECTOR RELAY POWER SUPPLY (EXCITATION COIL SIDE)

1.

Install all removed parts.

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 (EXCITATION COIL SIDE)

1.

Turn ignition switch OFF.

2.

Disconnect fuel injector relayharness connector.

3.

Disconnect IPDM E/R harness connector.

4.

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

5.

Also check harness for short to power.

Is the inspection result normal?

YES

>> Perform trouble diagnosis for power supply circuit.

NO

>> Repair or replace malfunctioning part.

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 ground.

Is the inspection result normal?

YES

>> GO TO 10.

NO

>> Repair or replace malfunctioning part.

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

F26

1

Ground

Battery voltage

+

−

Continuity

IPDM E/R

Fuel injector relay

Connector

Terminal

Connector

Terminal

F72

66

F26

1

Existed

+

−

Continuity

Fuel injector relay

Connector

Terminal

F26

2

Ground

Existed