Nissan X-Trail 32. Manual - part 977

P0380 GLOW CONTROL SYSTEM

EC-1037

< DTC/CIRCUIT DIAGNOSIS >

[R9M]

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2.

CHECK GLOW CONTROL UNIT POWER SUPPLY CIRCUIT

1.

Turn ignition switch ON.

2.

Check the power supply of the glow control unit.

Is the inspection result normal?

YES

>> GO TO 3.

NO

>> Perform trouble diagnosis for power supply circuit.

3.

CHECK GLOW CONTROL UNIT CIRCUIT FOR OPEN AND SHORT-1

1.

Turn ignition switch OFF.

2.

Check the continuity between glow control unit harness connector and ECM harness connector.

Is the inspection result normal?

YES

>> GO TO 4.

NO

>> Repair or replace error-detected parts.

4.

CHECK GLOW CONTROL UNIT CIRCUIT FOR OPEN AND SHORT-2

Check the continuity between glow control unit harness connector and glow plug harness connector.

Is the inspection result normal?

YES

>> GO TO 5.

NO

>> Repair or replace error-detected parts.

5.

CHECK GLOW PLUG 

Refer to 

EC-1038, "Component Inspection (Glow Plug)"

.

Is the inspection result normal?

YES

>> GO TO 6.

NO

>> Replace error-detected parts.

6.

CHECK INTERMITTENT INCIDENT

Refer to 

GI-44, "Intermittent Incident"

.

Is the inspection result normal?

YES

>> Replace glow control unit.

NO

>> Repair or replace.

+

-

Voltage

Glow control unit

Connector

Terminal

F140

6

Ground

Battery voltage

10

+

-

Continuity

ECM

Glow control unit

Connector

Terminal

Connector

Terminal

F117

35

F140

11

Existed

67

9

+

-

Continuity

Glow control unit

Glow plug

Connector

Terminal

Connector

Terminal

F140

1

F95

1

Existed

2

F96

1

3

F97

1

4

F98

1

EC-1038

< DTC/CIRCUIT DIAGNOSIS >

[R9M]

P0380 GLOW CONTROL SYSTEM

Component Inspection (Glow Plug)

INFOID:0000000010935716

1.

CHECK GLOW PLUG

1.

Disconnect glow plug harness connector.

2.

Check resistance between glow plug terminals as follows.

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> Replace malfunctioning glow plug.

+

-

Resistance

Glow plug

Terminal

1

Ground

0.2 - 0.8 

Ω

 [at 20

°

C (68

°

F)]

P0402 EGR VOLUME CONTROL VALVE

EC-1039

< DTC/CIRCUIT DIAGNOSIS >

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P0402 EGR VOLUME CONTROL VALVE

DTC Description

INFOID:0000000010935717

DTC DETECTION LOGIC

POSSIBLE CAUSE

• Harness or connectors
• High Pressure EGR volume control valve

FAIL-SAFE

• EGR valve is closed position
• Throttle control motor is opened
• CSF regenerations forbidden
• CCSL deactivation with dashboard message
• Freeshift inhibited

DTC CONFIRMATION PROCEDURE

1.

PRECONDITIONING

If DTC Confirmation Procedure has been previously conducted, always turn ignition switch OFF and wait at
least 1 minute before conducting the next test.

>> GO TO 2.

2.

PERFORM DTC CONFIRMATION PROCEDURE

1.

Start engine.

2.

Maintain the following conditions for at least 10 consecutive seconds. Hold the steady as possible.

3.

Check DTC.

Is DTC detected?

YES

>> Proceed to 

EC-1039, "Diagnosis Procedure"

.

NO-1

>> To check malfunction symptom before repair: Refer to 

GI-44, "Intermittent Incident"

.

NO-2

>> Confirmation after repair: INSPECTION END

Diagnosis Procedure

INFOID:0000000010935718

1.

CHECK HIGH PRESSURE EGR VOLUME CONTROL VALVE

Visually check high pressure EGR volume control valve for chipping.

Is the inspection result normal?

YES

>> GO TO 2.

NO

>> Repair or replace error-detected parts.

2.

CHECK ECM HARNESS CONNECTOR CONNECTIONS

Check ECM harness connector connection.

Is the inspection result normal?

YES

>> GO TO 3.

NO

>> Repair or replace error-detected parts.

3.

CHECK HIGH PRESSURE EGR VOLUME CONTROL VALVE HARNESS CONNECTOR CONNECTIONS

DTC No.

CONSULT screen terms

(Trouble diagnosis content)

DTC detecting condition

P0402

EGR VALVE JAMMED OPEN
(Exhaust gas recirculation “A” flow exces-
sive detected)
• 1.DEF: MECHANICAL FAULT

ECM detects an incorrect closed position of high Pressure EGR volume 
control valve.

ENGINE SPEED

3,500 rpm

EC-1040

< DTC/CIRCUIT DIAGNOSIS >

[R9M]

P0402 EGR VOLUME CONTROL VALVE

Check high pressure EGR volume control valve harness connector connection.

Is the inspection result normal?

YES

>> GO TO 4.

NO

>> Repair or replace error-detected parts.

4.

CHECK HIGH PRESSURE EGR VOLUME CONTROL VALVE CIRCUIT FOR OPEN AND SHORT

1.

Turn ignition switch OFF.

2.

Check high pressure EGR volume control valve circuit for open and short.

Is the inspection result normal?

YES

>> GO TO 5.

NO

>> Repair or replace error-detected parts.

5.

DTC CONFIRMATION PROCEDURE

1.

Erase DTC.

2.

Perform DTC confirmation procedure again. Refer to 

EC-1039, "DTC Description"

.

Is the DTC P0402 displayed again?

YES

>> GO TO 6.

NO

>> INSPECTION END

6.

CHECK HIGH PRESSURE EGR VOLUME CONTROL VALVE MOTOR

Refer to 

EC-1040, "Component Inspection (High Pressure EGR Volume Control Valve Motor)"

.

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> Replace error-detected parts. 

Component Inspection (High Pressure EGR Volume Control Valve Motor)

INFOID:0000000010935719

1.

CHECK HIGH PRESSURE EGR VOLUME CONTROL VALVE MOTOR

1.

Turn ignition switch OFF.

2.

Disconnect high pressure EGR volume control valve harness connector.

3.

Check resistance between high pressure EGR volume control valve terminals as follows.

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> Replace high pressure EGR volume control valve.

+

-

Continuity

ECM

High pressure EGR volume 

control valve

Connector

Terminal

Connector

Terminal

F118

144

F156

1

Existed

148

2

High pressure EGR volume 

control valve

Resistance (Approx.)

+

-

Terminal

1

2

2.35 

Ω