Nissan Qashqai J11. Manual — part 519

EC9-232

< DTC/CIRCUIT DIAGNOSIS >

[R9M]

P0380 GLOW CONTROL SYSTEM

2.

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 3.

NO

>> Repair or replace error-detected parts.

3.

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 4.

NO

>> Repair or replace error-detected parts.

4.

CHECK GLOW PLUG

Refer to

EC9-232, "Component Inspection (Glow Plug)"

.

Is the inspection result normal?

YES

>> GO TO 5.

NO

>> Replace error-detected parts.

5.

CHECK INTERMITTENT INCIDENT

Refer to

GI-41, "Intermittent Incident"

.

Is the inspection result normal?

YES

>> Replace glow control unit.

NO

>> Repair or replace.

Component Inspection (Glow Plug)

INFOID:0000000010309160

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

+

-

Continuity

ECM

Glow control unit

Connector

Terminal

Connector

Terminal

F82

35

F115

11

Existed

67

9

+

-

Continuity

Glow control unit

Glow plug

Connector

Terminal

Connector

Terminal

F115

1

F125

1

Existed

2

F126

1

3

F127

1

4

F128

1

+

-

Resistance

Glow plug

Terminal

1

Ground

0.2 - 0.8

Ω

[at 20

°

C (68

°

F)]

P0380 GLOW CONTROL SYSTEM

EC9-233

< DTC/CIRCUIT DIAGNOSIS >

[R9M]

C

D

E

F

G

H

I

J

K

L

M

A

EC9

N

P

O

NO

>> Replace malfunctioning glow plug.

EC9-234

< DTC/CIRCUIT DIAGNOSIS >

[R9M]

P0402 EGR VOLUME CONTROL VALVE

P0402 EGR VOLUME CONTROL VALVE

DTC Logic

INFOID:0000000010309161

DTC DETECTION LOGIC

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

EC9-234, "Diagnosis Procedure"

.

NO

>> INSPECTION END

Diagnosis Procedure

INFOID:0000000010309162

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

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.

DTC No.

CONSULT screen terms

(Trouble diagnosis con-

tent)

DTC detecting condition

Possible cause

P0402

EGR VALVE JAMMED
OPEN
(Exhaust gas recircula-
tion “A” flow excessive
detected)
• 1.DEF: MECHANICAL

FAULT

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

• Harness or connectors
• High Pressure EGR volume control

valve

ENGINE SPEED

3,500 rpm

P0402 EGR VOLUME CONTROL VALVE

EC9-235

< DTC/CIRCUIT DIAGNOSIS >

[R9M]

C

D

E

F

G

H

I

J

K

L

M

A

EC9

N

P

O

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

EC9-234, "DTC Logic"

.

Is the DTC P0402 displayed again?

YES

>> GO TO 6.

NO

>> Check intermittent incident. Refer to

GI-41, "Intermittent Incident"

.

6.

CHECK HIGH PRESSURE EGR VOLUME CONTROL VALVE MOTOR

Refer to

EC9-235, "Component Inspection (High Pressure EGR Volume Control Valve Motor)"

.

Is the inspection result normal?

YES

>> Check intermittent incident. Refer to

GI-41, "Intermittent Incident"

.

NO

>> Replace error-detected parts.

Component Inspection (High Pressure EGR Volume Control Valve Motor)

INFOID:0000000010309163

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

F83

144

F14

1

Existed

148

2

High pressure EGR volume

control valve

Resistance (Approx.)

+

-

Terminal

1

2

2.35

Ω