Nissan X-Trail 32. Manual - part 817

HIGH PRESSURE FUEL PUMP

EC-397

< DTC/CIRCUIT DIAGNOSIS >

[MR20DD]

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10.

CHECK HIGH PRESSURE FUEL PUMP INSTALLATION

1.

Turn ignition switch OFF.

2.

Check high pressure fuel pump for improper attachment or looseness.

Is the inspection result normal?

YES

>> GO TO 11.

NO

>> Repair or replace malfunctioning part.

11.

CHECK CAMSHAFT

1.

Remove camshaft. Refer to 

EM-81, "Removal and Installation"

.

2.

Check camshaft. Refer to 

EM-84, "Inspection"

.

Is the inspection result normal?

YES

>> Check intermittent incident. Refer to 

GI-44, "Intermittent Incident"

.

NO

>> Replace camshaft. Refer to 

EM-81, "Removal and Installation"

.

Component Inspection (High Pressure Fuel Pump)

INFOID:0000000010775287

1.

CHECK HIGH PRESSURE FUEL PUMP-1

1.

Turn ignition switch OFF.

2.

Disconnect high pressure fuel pump harness connector.

3.

check the resistance between high pressure fuel pump terminals as per the following conditions.

Is the inspection result normal?

YES

>> GO TO 2.

NO

>> Replace high pressure fuel pump. Refer to 

EM-43, "Exploded View"

.

2.

CHECK HIGH PRESSURE FUEL PUMP-2

With CONSULT

1.

Reconnect high pressure fuel pump harness connector.

2.

Start engine.

3.

Select “FUEL PRES SEN V” in “DATA MONITOR” mode of “ENGINE” using CONSULT and check the
indication as per the following conditions.

Without CONSULT

1.

Start engine.

2.

Check fuel rail pressure sensor signal voltage.

High pressure fuel pump

Condition

Resistance

+

−

Terminal

1

2

Temperature [

°

C (

°

F)]

20 - 30 (68 - 86)

0.46 - 0.51 

Ω

Monitor item

Condition

Indication

FUEL PRES SEN V

At idle

820 - 1,140 mV

Revving engine up to 4,000 rpm quickly.

 820 - 2,900 mV

ECM

Condition

Voltage

(Approx.)

Connector

+

−

Terminal

F7

33

39

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

0.82 – 1.14 V

[Engine is running]
• Warm-up condition
• Engine speed: Revving engine from idle to 4,000 rpm

0.82 – 2.9 V

EC-398

< DTC/CIRCUIT DIAGNOSIS >

[MR20DD]

HIGH PRESSURE FUEL PUMP

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> Replace high pressure fuel pump. Refer to 

EM-43, "Exploded View"

.

Component Inspection (High Pressure Fuel Pump Relay)

INFOID:0000000010775288

1.

CHECK HIGH PRESSURE FUEL PUMP RELAY

1.

Turn ignition switch OFF.

2.

Remove high pressure fuel pump relay. Refer to 

EC-28, "ENGINE CONTROL SYSTEM : Component

Parts Location"

.

3.

Check the continuity between high pressure fuel pump relay ter-
minals.

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> Replace high pressure fuel pump relay. Refer to 

EC-28, "ENGINE CONTROL SYSTEM : Compo-

nent Parts Location"

.

+

−

Condition

Continuity

High pressure fuel 

pump relay

Terminal

3

5

12 V direct current supply between 
terminals 1 and 2

Existed

No current supply

Not existed

PBIB0098E

IGNITION SIGNAL

EC-399

< DTC/CIRCUIT DIAGNOSIS >

[MR20DD]

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IGNITION SIGNAL

Component Function Check

INFOID:0000000010775289

1.

INSPECTION START

Turn ignition switch OFF, and restart engine.
Does the engine start?

YES-1 >> With CONSULT: GO TO 2.
YES-2 >> Without CONSULT: GO TO 3.
NO

>> Proceed to 

EC-399, "Diagnosis Procedure"

.

2.

CHECK IGNITION SIGNAL FUNCTION-1

With CONSULT

1.

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

2.

Check that each circuit produces a momentary engine speed drop.

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> Proceed to 

EC-399, "Diagnosis Procedure"

.

3.

CHECK IGNITION SIGNAL FUNCTION-2

Without CONSULT

1.

Let engine idle.

2.

Read the voltage signal between ECM harness connector terminals with an oscilloscope.

NOTE:
The pulse cycle changes depending on rpm at idle.

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> Proceed to 

EC-399, "Diagnosis Procedure"

.

Diagnosis Procedure

INFOID:0000000010775290

1.

CHECK CONDENSER POWER SUPPLY

1.

Turn ignition switch OFF.

2.

Disconnect condenser harness connector.

3.

Turn ignition switch ON.

4.

Check the voltage between condenser harness connector and ground.

Is the inspection result normal?

ECM

Voltage signal

+

−

Connector

Terminal

Connector

Terminal

F8

78

E16

128

82

86

90

JPBIA4733ZZ

+

−

Voltage

Condenser

Connector

Terminal

F213

1

Ground

Battery voltage

EC-400

< DTC/CIRCUIT DIAGNOSIS >

[MR20DD]

IGNITION SIGNAL

YES

>> GO TO 3.

NO

>> GO TO 2.

2.

CHECK CONDENSER 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 condenser harness connector.

4.

Also check harness for short to ground and to power.

Is the inspection result normal?

YES

>> Perform trouble diagnosis for power supply circuit.

NO

>> Repair or replace malfunctioning part.

3.

CHECK CONDENSER GROUND CIRCUIT

1.

Turn ignition switch OFF.

2.

Check the continuity between condenser harness connector and ground.

3.

Also check harness for short to power.

Is the inspection result normal?

YES

>> GO TO 4.

NO

>> Repair or replace malfunctioning part.

4.

CHECK CONDENSER

Check condenser. Refer to 

EC-207, "Component Inspection"

.

Is the inspection result normal?

YES

>> GO TO 5.

NO

>> Replace condenser.

5.

CHECK IGNITION COIL POWER SUPPLY

1.

Reconnect all harness connectors disconnected.

2.

Disconnect ignition coil harness connector.

3.

Turn ignition switch ON.

4.

Check the voltage between ignition coil harness connector and ground.

Is the inspection result normal?

YES

>> GO TO 6.

NO

>> Repair or replace malfunctioning part.

+

−

Continuity

IPDM E/R

Condenser

Connector

Terminal

Connector

Terminal

F72

66

F213

1

Existed

+

−

Continuity

Condenser

Connector

Terminal

F213

2

Ground

Existed

+

−

Voltage

Ignition coil

Cylinder

Connector

Terminal

1

F33

3

Ground

Battery voltage

2

F34

3

3

F35

3

4

F36

3